Audi A3 Cabriolet (2014) Self Study Program

Self Study Programme 623

For internal use only

Audi A3 Cabriolet ’14

Audi

Service Training

Audi A3 Cabriolet ’14

Sporty, elegant and multi-faceted – introducing the new Audi A3
Cabriolet ’14. This compact four-seater impresses at first glance
with its flowing lines and soft top. It is also at the top of its class
technically – with systematic lightweight design, new engines,
multi-faceted networking and high-performance assistance
systems. The Audi A3 Cabriolet ’14 completes the A3 family.

The new Audi A3 Cabriolet '14 has grown compared to the
outgoing model – in length, wheelbase and width. Only its height
has been reduced – to give the four-seat convertible a more elegant
and sporty look on the road.

The new Audi A3 Cabriolet ’14 has a soft top that is stretched over
a lightweight magnesium-steel kinematic mechanism, and it
complements the car's design perfectly. At the press of a button,
the top opens or closes electro-hydraulically in less than 18
seconds, even while driving up to 50 kph.
The fully automatic soft top has a glass rear window. A fully auto­matic acoustic top is available as an alternative; it has a thicker
inner foam layer which reduces the already low interior noise level
of the Audi A3 Cabriolet '14 even more. An active rollover protec­tion system protects the occupants in case of a rollover accident.

Elegantly drawn lines and clean surfaces also typify the interior
design of the new Audi A3 Cabriolet '14. The optional lighting
package includes, for the first time, a touch-sensitive switch for

the reading lights.

As in every Audi, workmanship quality is uncompromisingly high,
and the car's controls are simple, intuitive and convenient. It oers
enough space for four adults, and the seatbacks of the two rear
seats can be folded down to create a wide through-load area. The
steering wheel and seats are new designs, and the also new elec­tro-mechanical parking brake is operated by a pushbutton on the
centre console.

All engines in the new Audi A3 Cabriolet '14 combine the technolo­gies of direct injection, turbocharging and a start-stop-system.
On average, the three engines oered at market launch have
twelve percent better fuel economy than the engines in the outgo­ing model – and they do so while improving driving performance.

The chassis of the new Audi A3 Cabriolet '14 impresses with
sophisticated technology that delivers sporty handling, superior
vehicle safety and a high level of comfort. Some of the compo­nents of the MacPherson front suspension are made of aluminum;
the four-link rear suspension handles longitudinal and transverse
forces separately. The power steering system features an ecient
electromechanical drive.

The ESC stability control system integrates an electronic limited
slip dierential – this makes handling even smoother and safer at
the vehicle’s cornering limits while driving fast through curves. The
brakes are powerful and durable.

623_001

2

!

Contents

Introduction

In brief _______________________________________________________________________________________________________________________________________________________ 4

Body

Body structure/materials ___________________________________________________________________________________________________________________________________ 6
Body structure/reinforcements ____________________________________________________________________________________________________________________________ 8

Convertible top

Variable convertible top well _____________________________________________________________________________________________________________________________ 12
Convertible top box lid/service position _________________________________________________________________________________________________________________13
Convertible top frame _____________________________________________________________________________________________________________________________________14
Hydraulic unit _______________________________________________________________________________________________________________________________________________ 15

Convertible top control system

Installation locations of the convertible top control unit ______________________________________________________________________________________________ 16
Convertible top operation _________________________________________________________________________________________________________________________________ 18
Components of the convertible top control unit ________________________________________________________________________________________________________30
Emergency operation ______________________________________________________________________________________________________________________________________42
Data bus overview __________________________________________________________________________________________________________________________________________45

Occupant safety

Components ________________________________________________________________________________________________________________________________________________46
System overview ___________________________________________________________________________________________________________________________________________48
Side airbag __________________________________________________________________________________________________________________________________________________ 50
Electrical wiring loom for side airbag ____________________________________________________________________________________________________________________51
Rear side airbag crash sensor, driver side G256 ________________________________________________________________________________________________________51
Rollover protection ________________________________________________________________________________________________________________________________________ 52
Cassettes with anti-roll bars ______________________________________________________________________________________________________________________________53
Rollover protection trigger, driver side N646 and rollover protection trigger, passenger side N647 _____________________________________________ 53
Deployed rollover protection system N647 _____________________________________________________________________________________________________________54
Resetting a deployed anti-roll bar ________________________________________________________________________________________________________________________ 55
Diagnostics _________________________________________________________________________________________________________________________________________________ 55

Engine/gearbox combinations

Petrol engines ______________________________________________________________________________________________________________________________________________56
Diesel engines ______________________________________________________________________________________________________________________________________________57

Suspension

Overall concept ____________________________________________________________________________________________________________________________________________58
Overview ____________________________________________________________________________________________________________________________________________________ 59

Electrical system

Installation locations of control units ___________________________________________________________________________________________________________________ 60
Topology ____________________________________________________________________________________________________________________________________________________62

Air conditioning

Introduction ________________________________________________________________________________________________________________________________________________64
Operation ___________________________________________________________________________________________________________________________________________________65

Infotainment

Sound system _______________________________________________________________________________________________________________________________________________68
Aerial system _______________________________________________________________________________________________________________________________________________70
Overview of versions _______________________________________________________________________________________________________________________________________72

Service

Inspection and maintenance ______________________________________________________________________________________________________________________________ 74
Self Study Programmes ___________________________________________________________________________________________________________________________________ 75

• The Self Study Programme teaches a basic knowledge of the design and mode of operation of new models,
new automotive components or new technologies.

It is not a Repair Manual! Figures are given for explanatory purposes only and refer to the data valid at the
time of preparation of the SSP.
Content is not updated.

For further information on maintenance and repair work, always refer to the current technical literature.

Note

Reference

3

!

Introduction

In brief

Dimensions

623_002

623_003

Note

The graphics and illustrations shown in this self study programme are basic representations and are given to help understand
concepts.

4

Length in mm 4421 Cabin width, front in mm 1468

Width in mm 1793

5)

Cabin width, rear in mm 1203

Height in mm 1409 Headroom, front in mm 1000

Track width, front in mm 1555 Headroom, rear in mm 921

Track width, rear in mm 1526 Load sill height in mm 685

Wheelbase in mm 2595 Boot capacity in l 320

Trailer load in kg

with brake at a gradient of 8%

Kerb weight in kg 1430

1800

4)

4)

Tank capacity in l 50

Drag coecient in c

w

Max. gross weight in kg 1930

623_004

0.30

1)

Shoulder room width

2)

Elbow room width

3)

Maximum headroom

4)

with a 1.8l TFSI engine developing 132 kW at 250 Nm

5)

excluding mirror

All dimensions are given in millimetres and refer to the unladen weight of the vehicle.

5

Body

Body structure/materials

The body of the Audi A3 Cabriolet ’14 rigid and crash-safe body
structure designed on the basis of the Audi A3 saloon. Thanks to
Audi ultra-lightweight technology, convertible-specific elements
such as the A post, front roof frame, rear bulkhead and the
underbody are designed so they do not add weight to the
A3 Cabriolet ’14.

Including its special reinforcements, which deliver high torsional
stiness, the body-in-white weighs 30 kg less than the
outgoing model.

Attachments

The attachments, specifically the wings, doors, convertible top box
lid, rear hatch and bumper cross-members, are of lightweight steel
construction.
The following components of the A3 Cabriolet ’14 are made from
aluminium:

• Bonnet

• Front bumper cross-member

6

623_106

Key:

Ultrahigh strength steel (hot-formed)
Advanced high strength steel
High strength steel
Low strength steel
Sheet aluminium
Aluminium section

7

Body structure/reinforcements

A post reinforcement

The A3 Cabriolet ’14 aords a high level of safety in the event of a
rollover accident thanks to its extremely sti A post structure,
which comprises an inner plate and a reinforcement tube.

The inner plate is made from modern high-tensile steel and the
reinforcement tube from ultra-high-strength thermoformed steel.

Reinforcing tube

Inner A post

Lower rail / sill / seat cross-member reinforcements

Various additional reinforcements are used to ensure that the body

structure meets the high convertible-specific strength require­ments in the lower rail/sill and the B post areas. To provide better
side impact protection, the seat cross-member located between
both B posts is made from ultra-high-strength thermoformed
steel.

Seat cross-member

B post with

reinforcements

623_107

Reinforcement
Side member/sill

623_108

8

Rear bulkhead

Additional strengthening is provided by the rear bulkhead, which is
rigidly connected to the car body.
High-strength sheet steel is used to achieve extremely high
rigidity in crash-relevant areas, such as the rollover protection
system mounting.

Rollover protection system mounting

Rear bulkhead

This not only provides better safety for the car occupants; it also
increases the stiness of the occupant cell significantly.

Door side impact reinforcement

The door side impact protection is specially adapted for the A3
Cabriolet ’14; during a collision ,it absorbs the impact energy and
dissipates it to the body side structure.

Side impact protection

623_109

623_110

Additional reinforcements

9

Convertible top

As with the outgoing generation, the new Audi A3 Cabriolet ’14
features a classical soft top with k fold system. The substructure
comprises a mix of magnesium, aluminium and steel. At the press
of a button, the top opens or closes electro-hydraulically in less
than 18 seconds, even while driving up to 50 kph. In the opened
state, the convertible top – folded into three layers – is stowed in a
well.

Roof bow

Excellent thermal insulation and a heated glass rear window mean
the new Audi A3 Cabriolet ’14 is also suitable for winter use. The
soft top is made from rugged materials and optionally available in
a deluxe version (acoustic convertible top).
The complete convertible top weighs approximately 51 kg.

Roof bow

The roof bows contain grooves in which the convertible top
cover is attached by welting. For removal and installation, the
convertible top cover can be pulled in and out at the sides. The
headliner clips onto the roof bows.

Convertible top

cover welting

Headliner retaining strip

Convertible top cover with

sound insulating foam

Roof bow

Interior lining

623_111

10

!

Convertible top fabric

The convertible top cover comprises a tarpaulin with layers of
insulation (acoustic insulating foam). The acoustic convertible top
provides superior sound and thermal insulation thanks to an
acoustic insulating foam of adapted density and thickness (10mm
instead of 7 mm in the basic convertible top).

Convertible top tarpaulin

Sound insulating foam

Interior lining

The convertible top tarpaulin itself has a three-layered structure.
The outer layer is made of an acrylic nitrile fabric, the middle layer
of butyl rubber (acoustic convertible top) or chloroprene rubber
(basic convertible top) and the inner layer of polyester fabric. The
tarpaulin is manufactured from a middle panel and two side
sections.

623_112

Rear window

The glass rear window is made of 3.15
mm toughened safety glass and is
electrically heated. It is bonded to the
convertible top cover.

AM aerial

Tensioning strut

The tensioning strut is seated on the con­vertible top box lid and locks in the OTDC
position so that the hydraulic system can
depressurise after closing.

2

623_113

Note

The integrated glass rear window cannot be replaced individually.

11

!

Variable convertible top well

The convertible top of the A3 Cabriolet ’14 can only be opened
when the convertible top tray is in the lowered position. The
convertible top well can be lowered manually by pulling the
handle.

The variable convertible top well can be raised when the convert­ible top is closed, thereby providing additional load capacity in the
boot.

Windbreak

The windbreak reduces draughts inside the vehicle for greater
comfort when driving with the soft top open.
The windbreak is engaged into the side trims behind the front
seats and then moved into the upright position.
When not in use, the windbreak is folded away and stowed in a
storage bag in the boot.

Note

The windbreak can be left on the car when the convertible top is closed.

12

Convertible top box lid/service position

The convertible top box lid is a lightweight steel construction and
stops the open convertible top from becoming dirty. It is opened
and closed by two hydraulic cylinders seated on the left and right
toggle levers (hinges).
For assembly work on the convertible top, the convertible top and/
or the convertible top box lid must be moved into the service
position (limit position). To prevent unwanted closing of the lid,
both toggle levers (hinges) must be pushed towards the tensioning
strut at the upper pivot point as far as the stop.
A tensioning strap (T10038) and two hooks (T4036) are engaged
into the convertible top edge centrally at the front and back and
hold the convertible top in the assembly position.

T 10038

T 40306

T 40306

623_114

Convertible top well, upper position

Convertible top, lower position

623_115

13

!

Convertible top frame

The convertible top frame to bolted to the car body, with a main
bearing attached to a mounting plate on the left and right.
Unlike in the outgoing model generation, the position of the
retaining plates is now defined by the reference point system (RPS)
of the car body and cannot be changed.

Roof bow tensioning strap

Front roof bow

Roof bow 1

Convertible top

locking motor

Convertible top lock

Front roof

rod

Rear roof rod

Roof bows 1-4 are made from extruded aluminium sections. The
front roof bow, on the other hand, is made from high-grade mag­nesium on account of its complex design. By using these dierent
materials, the convertible top frame meets high standards for
stability and strength.

Roof bow 2

Roof bow 3

Roof bow 4

Hydraulic cylinder
for tensioning strut

AM aerial

Tensioning strut

2

Main side bar

Hydraulic cylinder

for tensioning strut

Main bearing with

hydraulic cylinder for

convertible top

Main bearing

The convertible top can be removed and installed using the two
spacers T40307, which are inserted into the left and right main
bearings from above and remain inside the main bearings during
the entire time the convertible top is removed.
When the convertible top is removed, the spacers replace the
missing stop buers on the car body and thereby prevent damage
to the convertible top cover and convertible top frame while the
convertible top is in storage or transit.

Hydraulic cylinder
Convertible top box lid

Rear window

Hydraulic pump
Hydraulic cylinder
Convertible top box lid

623_116

T40307

Note

Please follow the instructions given in the Workshop Manual during all work on the convertible top.

14

Hydraulic unit

The hydraulic unit consists of the electric motor, the valve block
(including pump and valves) and the oil tank.
Plastic-sheathed flexible metal spiral hoses connect the hydraulic
cylinders to the hydraulic unit. Relays 1 and 2 are clipped onto the
hydraulic unit and control the operating current for clockwise and
anticlockwise operation of the pump.
During the convertible top raising or lowering sequence, the pump
runs and valves 1-3 control the flow of fluid according to the
required sequence of movements.

Plastic-sheathed flexible

metal spiral hose

Electric motor

The direction of rotation of the pump only needs to be reversed to
move the tensioning strut into position when raising the convert­ible top.
Pump pressure is limited to max. 180 bar by pressure-limiting
valves.
When the system is at rest, the hydraulic fluid can flow back from
the hydraulic cylinders to the fluid reservoir unpressurised, allow­ing the convertible top to be emergency-operated.

Valve block

Power operated convertible

top valve -2- N341

Power operated convertible

top valve -1- N272

Power operated convertible
top valve -3- N342

Relay 2 J588

Relay 1 J321

Bleeding the system

If repair work has been performed on the hydraulic system, no
bleeding is required. The hydraulic system is bled automatically
during operation.

Hydraulic cylinder

Double-acting hydraulic cylinders are used. They can be activated
from both sides according to the movement sequence and are
birdirectional.

Oil filler screw

Oil reservoir

623_118

Solenoid valve

The hydraulic system is fitted with 3/2-way valves (valves with 3
connections and 2 switch positions) which are operated electro­magnetically and reset by spring force. Oil flows out of the cylin­ders and into the tank when the valves are de-energised, and from
the pump to the cylinders when the valves are energised.

The valves are activated by the control unit for 5 minutes. The
convertible top can be emergency-operated directly after the
valves have been switched o. When the valves are de-energised,
the hydraulic system depressurises and the convertible top col­lapses completely.

15

Convertible top control system

Installation locations of the convertible top control unit

The component parts of the system are summarised on the following two pages.

F412

F294

F295

V223

F411

J285

16

F137

Key

E137 Convertible top operating switch

F171 Convertible top stowed switch
F202 Convertible top front switch
F293 Convertible top box lid latch unlocked switch
F294 Convertible top lock open switch
F295 Convertible top lock closed switch
F404 Convertible top box lid latch engaged switch
F407 Convertible top box lid up switch
F408 Tensioning strut up switch
F411 Convertible top lock closed switch, left
F412 Convertible top lock closed switch, right
F517 Tensioning strut down switch
F519 Convertible top box lid closed switch
F520 Convertible top well down switch

J256 Convertible top operation control unit
J285 Control unit in dash panel insert (diagram showing con-

vertible top status)
J321 Hydraulic pump relay 1, convertible top operation
J588 Hydraulic pump relay 2, convertible top operation

N272 Power operated convertible top valve 1
N341 Power operated convertible top valve 2
N342 Power operated convertible top valve 3

V118 Convertible top operation hydraulic pump
V222 Convertible top box lid latch motor
V223 Convertible top locking motor

F171

F202

F517

F408

F407

J588

J321

V118

F520

F519

F404

F293

V222

J256

N341
N272
N342

623_023

17

Convertible top operation

The convertible top on the Audi A3 Cabriolet ’14 is opened and
closed by an electro-hydraulic system.
In contrast to the outgoing model, the Audi A3 Cabriolet ’14 has a
convertible top box lid. The convertible top box is completely
covered by the convertible top box lid.

Service position of convertible top and convertible
top box lid

The hydraulic system is depressurised approx. 5 minutes after the
last actuation. The convertible top can then collapse completely
and the convertible top box lid can close. When carrying out work
on the convertible top system, please note that moving parts can
cause injury.

Basics of convertible top operating switch E137

The convertible top opening cycle is started by pulling the convert­ible top operating switch E137. To open the convertible top com­pletely, the switch must be kept pulled until the opening cycle is
complete. When the switch is released, the convertible top cycle
stops instantaneously. If the switch is pulled again, the convertible
top continues to open. If the switch is pressed, the convertible top
closes.
The switch must also be kept actuated (pressed) during the closing
cycle.
If the convertible top is closed and the switch for opening the
convertible top is pulled and then released again, the side windows
will lower to a certain level. The convertible top cycle will not start.
If the button is now kept pressed for the next 5 seconds, the side
windows closes again.
this function is unavailable due to legal restrictions in some coun­tries, including the USA.

Objects deposited on the convertible top box lid or in the convert­ible top box can damage the vehicle during convertible top opera­tion. The convertible top is only available as a fully automatic
convertible top. It is also optionally available as an acoustic con­vertible top. The acoustic convertible top oers better thermal and
sound insulation than the standard convertible top.

This is why the hydraulic pressure must be relieved and the con­vertible top moved into the service position before carrying out
work on the convertible top. For further information, refer to page
13 "Convertible top box lid/service position" and the Workshop
Manual.

Graphic displays for convertible top operation in instrument panel J285

The Audi A3 Cabriolet ’14 uses a dierent method to indicate
convertible top operation. A separate convertible top operation
warning lamp is no longer used. Instead, the operation of the

As soon as the convertible top starts to open or close, a graphic
display appears in the dash panel insert J285 showing the vehicle
together with the convertible top.

convertible top is now indicated graphically. The displays are
monochrome or colour depending on dash panel insert version.

A curved arrow over the convertible top indicates the direction of
the convertible top. If the arrow tip is pointing back, the convert­ible top is opening. If the arrow tip is pointing forward, the con­vertible top is closing.

623_024

Convertible top operating switch E137

Convertible top opening cycle

18

623_025

Convertible top opening cycle

623_026

If no arrow is displayed over the convertible top, the convertible
top cycle has been initiated but aborted. The convertible top is
therefore currently in an intermediate position.

Convertible top cycle aborted, intermediate position Convertible top cycle aborted, intermediate position

623_027

If the convertible top cycle has been completed, the status of the
convertible top (opened or closed) is indicated for approx. 2
seconds. An audible signal sounds at the same time.

Convertible top cycle completed, convertible
top closed

623_029

Convertible top cycle completed, convertible
top closed

623_028

623_030

Convertible top cycle completed, convertible
top open

623_051

Convertible top cycle completed, convertible
top open

623_052

19

If a convertible top operation is not possible, this is indicated
audibly and visually in the dash panel insert.
A warning is given and nine messages are displayed.

The warning is given if the convertible top is in an intermediate
position, and if the event memory contains an entry and the
vehicle is travelling faster than 5 kph.

Warnings are indicated via the colour dash panel insert as follows:

Triangle with exclamation mark in the driver information
and warning lamps tab

Yellow vehicle-with-convertible-top icon in the
status line

Displayed text

Convertible top:

malfunction!

you can continue driving

(limited functionality).

See owner's manual

Yellow central warning lamp

Warnings are indicated via the monochrome dash panel insert as follows:

Exclamation mark in driver information tab and warning
lamps tab

Vehicle convertible top icon in the status line

Displayed text

623_031

Convertible top:

malfunction!

you can continue driving

(limited functionality).

See owner's manual

Yellow central warning lamp

20

623_032

Other reasons why a convertible top operation is not possible are
displayed as messages.

Display of messages in the dash panel insert:

• The yellow warning lamp is NOT activated when messages are displayed.

• Messages are indicated by a white vehicle-with-convertible-top icon in the status line in both the colour and monochrome dash panel
inserts.

• Message texts are NOT included in the driver information and warning lamps tab.

If the convertible top is in a limit position (open or closed) and a convertible top cycle is initiated in the limit stop direction, no actions are
initiated and no messages are displayed.

To activate messages, the following conditions must be met:

The boot lid is open and the convertible top operating switch is
actuated.

Convertible top:

Please close

boot lid

The convertible top well is in the upper position and the convert­ible top operating switch is actuated in the "open" direction.

The convertible top is in a limit position (open or closed), the
vehicle is travelling faster than 50 kph and the convertible top
operating switch is actuated.

623_033

Convertible top:

Please

lower convertible

top well

623_034

Convertible top:

no operation

possible.

Speed

too high

623_035

21

A convertible top cycle is currently active and the vehicle's speed
increases to over 50 kph

or

the convertible top is in an intermediate position and the vehicle's
speed exceeds 50 kph

The ambient temperature is below -15 °C, the convertible top is
closed and the convertible top operating switch is actuated in the
"open" direction.

An open convertible top can also be closed at temperatures below

-15°C.

Convertible top:

not in limit position.

Speed

too high

623_036

Convertible top:

no operation

possible.

Ambient temperature

too low

The convertible top operation control unit has registered a static
event and the switch is actuated.

623_037

Convertible top:

no operation

possible

623_038

22

The car’s battery voltage has dropped below a certain value. The
ignition is "on" but the engine is "o" and the convertible top
operating switch is actuated.

The overload protection is active and the convertible top operating
switch is actuated.

Convertible top:

no operation possible.

Engine must be running

623_039

The convertible top operation control unit has registered a static
event, the limit position (open or closed) has been reached and the
actuated convertible top operating switch is released.

Convertible top:

no operation

possible

623_040

Convertible top:

malfunction!

You can continue driving

623_041

23

Convertible top opening sequence

To be able to open the convertible top, the following conditions
must be met:

• The vehicle must not be travelling faster than 50 kph

• The function must be switched on

• The ambient temperature must be above -15 °C

Initial situation: the convertible top is closed

Assuming that all conditions are met and the convertible top
operating switch E137 is kept pulled, the side windows initially
open to a certain level.

• The convertible top well must be in the lower position

• The boot lid must be closed

• The battery voltage must be sucient

623_043

623_042

Convertible top operating switch E137

A graphic display then appears in the dash panel insert J285

showing the vehicle with convertible top and a curved arrow. The
arrow tip is pointing back.

Convertible top opening cycle Convertible top opening cycle

623_044 623_045

At this time the boot lid handle release button E234 is not func­tional.
Therefore, the boot lid cannot be opened.

24

If the rear window heater is on, it is switched o. The rear window
heater can only be switched on if the convertible top is fully closed.

Next, the catch hooks in the upper part of the lock in the window
frame area move upwards. At the same time, the tensioning strut
begins to move into the upright position.

At the same time, the convertible top box lid latch motor V222
opens the convertible top box lid. The tensioning strut moves into
the upright position. The convertible top box lid opens fully.

The convertible top retracts and folds down into the convertible
top well. Meanwhile, the catch hooks close again.

623_046

623_047

623_048

After that, the convertible top box lid closes and the convertible
top box lid latch motor locks the convertible top box lid.

An acoustic signal and a graphic display in the dash panel insert

J285 indicate that the convertible top cycle is complete and the
convertible top is fully open.

Convertible top cycle completed, convertible
top open

623_051

Convertible top cycle completed, convertible
top open

623_049

623_052

Finally, the side windows move up all the way and the boot lid can
again be opened.

623_050

25

Convertible top closing sequence

To be able to close the convertible top, the following conditions
must be met:

• The vehicle must not be travelling faster than 50 kph

• The function must be switched on

Initial situation: the convertible top is open

The convertible top operating switch E137 is kept pressed. First,
the side windows open to a certain value.

• The boot lid must be closed

• The battery voltage must be sucient

623_046a

623_042

Convertible top operating switch E137

A graphic display then appears in the dash panel insert J285
showing the vehicle with convertible top and a curved arrow. The
arrow tip is pointing forward.

Convertible top closing cycle Convertible top closing cycle

At this time the boot lid handle release button E234 is not func­tional. Therefore, the boot lid cannot be opened.

26

623_053 623_054

The convertible top box lid latch motor V222 unlocks the convert­ible top box lid and the convertible top box lid opens fully.

The convertible top lifts up out of the convertible top box and the
catch hooks in the upper part of the convertible top lock open.

The tensioning strut moves into the upper position and the con­vertible top box lid closes fully. The convertible top box lid latch
motor locks the convertible top box lid.

623_046b

623_046c

The convertible top continues to run until it settles on top of the
window frame. At the same time, the tensioning strut moves
down. The catch hooks then lock the convertible top.

An acoustic signal and the graphic display in the dash panel insert
J285 indicate that the convertible top cycle is complete and the
convertible top is fully closed.

623_046d

623_046e

Convertible top cycle completed, convertible
top closed

623_055

If the convertible top operating switch E137 is kept pressed, the
side windows close. This function is unavailable in some countries
due to legal restrictions.

Convertible top cycle completed, convertible
top closed

623_056

The boot lid can be opened again and the rear window heater can
be switched on again.

27

!

Opening the convertible top with the car key via the lock cylinder on the driver's door.

The convertible top can also be opened using the car key. Before
this can be done, the following conditions must be met:

• The vehicle must be travelling at 0 kph

• The boot lid must be closed

• The battery voltage must be sucient

To open the convertible top, first unlock the vehicle with the car
key. Then insert the car key into the lock cylinder on the driver's
door and turn it in the "open" direction.
If the car key in now turned in the "open" direction again within 2
seconds and held in this position, the convertible top cycle will
start. The car key must be kept held in the "open" position during
the convertible top cycle. When the car key is released, the con­vertible top cycle will stop instantaneously. To resume the convert­ible top opening cycle, the car key must again be turned in the
"open" direction and held in this position. If the car key is turned in
the "close" direction and held in this position, the convertible top
will close again.

• The convertible top well must be in the lower position

• The ambient temperature must be above -15 °C

623_057

Closing the convertible top with the car key via the lock cylinder on the driver's door.

The convertible top can also be closed using the car key. Before this
can be done, the following conditions must be met:

• The vehicle must be travelling at 0 kph

• The boot lid must be closed

• The battery voltage must be sucient

Insert the car key into the lock cylinder on the driver's door and
turn it in the "close" direction. If the car key in now turned in the
"close" direction again within 2 seconds and held in this position,
the convertible top cycle will start. The car key must be kept held in
the "close" position during the convertible top cycle. When the car
key is released, the convertible top cycle will stop instantaneously.
To resume the convertible top cycle, the car key must again be
turned in the "close" direction and held in this position. If the car
key is turned in the "open" direction and held in this position, the
convertible top will open again.

623_058

Note

If the convertible top is actuated via the car key, the convertible top will start after a delay.

28

Operating the convertible top while driving

The convertible top can be opened or closed using the
convertible top operating switch E137 up to a speed of 50 kph.
If the vehicle's speed increases to over 50 kph during the convert­ible top cycle, the driver will be alerted audibly and visually. The
convertible top cycle is stopped and the convertible top comes to a
standstill in its current position. The convertible top cycle cannot
be resumed until the vehcile's speed has dropped to 50 kph or less.
To do this, the convertible top operating switch must be kept
pressed.

Convertible top:

not in limit position.

Speed

too high

A convertible top cycle cannot be initiated if the vehicle is travel­ling at a speed of over 50 kph. In this case too, the driver is alerted
by audible and visual warnings.

Message text

Message text

623_059

Convertible top:

no operation

possible.

Speed

too high

623_060

29

Components of the convertible top control unit

Convertible top operating switch E137

The convertible top operating switch E137 is available in two
versions: firstly in a large version and secondly in a small version.
The small version is installed if the vehicle is equipped with Hill
Start Assist and AUTO HOLD button E540.

623_061 623_062

Convertible top operating switch E137

In this case, the Hill Start Assist switch is installed in place of the
small convertible top operating switch.
Thr functions of the small and large switches are identical.
The switch is installed in the centre console.

AUTO HOLD button E540

Convertible top operating switch E137

Hall sensor

Controlled operation of the convertible top is only possible if the
convertible top operation control unit J256 receives information
from the sensors and switches during every phase of the convert­ible top cycle. The sensors and switches indicate the current
position of certain parts of the convertible top system to the
convertible top operation control unit J256. The convertible top

operation control unit J256 uses this information to control the
actuators and, thus, the operation of the convertible top.
The following Hall sensors in the Audi A3 Cabriolet ’14 react to the
fields generated by permanent magnets:

• Convertible top well down switch F520

• Convertible top lock closed switch, left F411

• Convertible top lock closed switch, right F412

• Convertible top box lid closed switch F519

• Convertible top front switch F202

• Convertible top stowed switch F171

• Tensioning strut up switch F408

The aforementioned Hall sensors are referred to as monopolar or
unipolar Hall sensors. They react to the south pole of a permanent
magnet.

Permanent magnet

Hall sensors work on the so-called Hall eect principle According
to the Hall eect, a magnetic field acts perpendicular to the
direction of current flow in a live conductor, resulting in voltage
dierences. These voltage dierences are converted to signals and
utilised by the convertible top operation control unit J256.

The switching distance of the aforementioned Hall sensors can be
in excess of 3 mm.

Hall sensor

30

623_063

Switching distance

Tensioning strut up switch F408

The tensioning strut up switch F408 is installed on the long ten­sioning strut pivot arm on the left-hand side as seen in the direc­tion of travel. This switch is a Hall sensor. A permanent magnet is
attached to the joint on the pivot arm.
When the tensioning strut reaches its upper position, the tension­ing strut up switch F408 and the permanent magnet are facing one
another. In this position, the convertible top operation control unit
J256 detects "tensioning strut up".

Convertible top well down switch F520

The convertible top well switch F520 is installed on the convertible
top well at the rear right as seen in the direction of travel. This
switch is a Hall sensor which detects when the variable convertible
top well is in the lowered position. The convertible top cannot be
opened when the variable convertible top well is in the upper
position.

Handle

Convertible top well

Tensioning strut up switch F408

623_069

The variable convertible top well has to be actuated manually. It is
lowered by pulling the handle and raised by pushing the handle.
The advantage of the variable convertible top well is that it pro­vides approx. 40 litres of additional load capacity in the boot when
the convertible top is closed and the convertible top well raised.

Convertible top well down switch F520

623_064

Convertible top lock closed switch, left F411 and
convertible top lock closed switch, right F412

The convertible top lock closed switch, left F411 and the convert­ible top lock closed switch, right F412 are located on the left and
right-hand convertible top latch locks respectively. These switches
are Hall sensors.

623_065

The convertible top locking motor V223 engages and disengages
the catch hooks on the convertible top. When the catch hooks are
engaged in the lock, the switches send a signal which the convert­ible top operation control unit interprets as "catch hooks engaged
in lock".

Catch hook

Convertible top lock closed switch

Permanent magnet

31

Convertible top box lid closed switch F519

The convertible top box lid closed switch F519 is located on the
convertible top box lid latch motor V222. This switch is a Hall
sensor.

A permanent magnet is attached to the striker. The permanent
magnet is directly facing switch F519 when the convertible top box
lid is closed.
The convertible top operation control unit then detects "convert­ible top box lid closed".

Striker on convertible
top box lid

Convertible top box lid
closed switch F519

623_066

Convertible top front switch F202

The convertible top front switch F202 is installed in the direction
of the travel, on the stationary part of the main bearing bolted to
the body on the left-hand side of the vehicle. The switch is attached
to the rear main bearing in the direction of travel. This switch is a
Hall sensor.

Permanent magnet

A permanent magnet is attached to the moving part of the main
bearing. If the permanent magnet stops within the detection
range of the switch, convertible top locking control unit detects
"convertible top in front position".

32

623_067

Convertible top front switch F202

Convertible top stowed switch F171

The convertible top stowed switch F171 is installed in the direction
of the travel, on the stationary part of the main bearing bolted to
the body on the left-hand side of the vehicle. The switch is attached
to the rear main bearing in the direction of travel. This switch is a
Hall sensor.

Permanent magnet

A permanent magnet is attached to the moving part of the main
bearing. If the permanent magnet stops within the detection
range of the switch, convertible top locking control unit detects
"convertible top front".

623_068

Convertible top stowed switch F171

Convertible top box lid latch motor V222

The convertible top box lid latch motor locks the convertible top
box lid. Motor V222 is activated by the convertible top operation
control unit J256. The motor is mounted on the anti-roll bar

cross-member.

623_070

Convertible top box lid latch motor V222

33

Convertible top box lid latch unlocked switch F293 and
convertible top box lid latch engaged switch F404

Both switches are integrated in the convertible top box lid latch
motor V222.

The microswitches are actuated by nipples on the toothed
segment.

This switch tells the convertible top operation control unit J256
whether the convertible top box lid latch is engaged or disen­gaged.

Boot lid

Convertible top box lid latch
engaged switch F293

623_070

Convertible top box lid latch engaged switch F404

The convertible top can only be operated when the boot lid is
closed. When the convertible top cycle is initiated, the onboard
power supply control unit J519 prevents the boot lid from being
opened via the boot lid handle release button E234. On comple­tion of the convertible top cycle, the boot lid handle release button
E234 is re-enabled.

If a convertible top cycle is initiated with the convertible top
operating switch E137, the adjacent diagram in the dash panel
insert indicates that the boot lid is open and, therefore, that the
convertible top cannot be operated.

623_072

Switch for releasing the boot lid

34

Convertible top:

Please close

boot lid

623_073

Convertible top operation hydraulic pump V118

Convertible top operation hydraulic pump V118 including

• Hydraulic pump relay, convertible top operation J321

• Hydraulic pump relay 2, convertible top operation J588

• Power operated convertible top valve -1- N272

The hydraulic pump together with the relays and valves form a
unit. The hydraulic pump is installed in the boot, behind the
luggage compartment trim on the left-hand side as seen in the
direction of travel. The hydraulic pump is housed in an acoustic
enclosure which provides sound insulation during pump operation.

• Power operated convertible top valve -2- N341

• Power operated convertible top valve -3- N342

The convertible top operation control unit J256 controls the
hydraulic pump via both relays. The relays control the clockwise
and anticlockwise operation of the pump.

623_074

Convertible top operation hydraulic pump V118

Depending on the deployment direction of convertible top
(opening or closing), the valves guide the oil flow through the hose
system and into the hydraulic cylinders.

Power operated convertible
top valve -2- N341

Power operated convertible
top valve -1- N272

Power operated convertible
top valve -3- N342

Hydraulic pump relay 1,
convertible top operation J321

Hydraulic pump relay 2,
convertible top operation J588

623_118

35

!

The hydraulic system is self-locking. This means that the pressure
generated by the pump is maintained within the system for
approx. 5 minutes. The system de-energises the valves after
approx. 5 minutes, causing the hydraulic system to depressurise.

If the convertible top is in an intermediate position and the
hydraulic system depressurises, the convertible top will collapse
depending on its position. Also, the convertible top box lid will
close depending on its position. In the worst-case scenario, the
convertible top will collide with the convertible top box lid.
If this happens, the convertible top or the convertible top box lid
may become damaged. It may also be the case that neither the
convertible top box lid nor the convertible top reaches one of its
limit positions. It is no longer possible to operate the convertible
top because, in this case, the convertible top operation control unit
receives implausible signals. The message "Convertible top: no
operation possible" is displayed in the dash panel insert.

To be able to continue operating the convertible top, the convert­ible top box lid must be moved manually into a limit position.
The convertible top cycle can then be resumed. If the limit position
was reached by opening the convertible top box lid, the convertible
top box lid must be secured to prevent it from slamming shut.
Refer to description on page 43.

Collision of the convertible top and convertible top box lid

623_076

The system can also be depressurised manually by turning o the
ignition and pushing or pulling the convertible top operating
switch E137 for approx. 5 seconds.

623_077

Convertible top operating switch E137

Note

Avoid collisions between the convertible top and the convertible top box lid while the top is lowering.

36

Hydraulic cylinder

The convertible top of the A3 Cabriolet ’14 is equipped with three
hydraulic cylinder pairs. Two cylinders are responsible for actuating
the convertible top box lid, two other cylinders are responsible for
the roof bows, and the last two are responsible for the convertible
top.

Cylinder pair for
tensioning strut

The hydraulic cylinders can be actuated from both sides and
therefore act in two working directions.

Compression stage

Cylinder pair for convertible top

Cylinder pair for
convertible top box
lid

623_078

Hydraulic cylinder Tension stage Piston rod

Hydraulic connection

623_079

Hydraulic line Hydraulic connection

Pistons

37

Tensioning strut down switch F517

The tensioning strut down switch F517 is integrated in the hydrau­lic cylinder responsible for the movement of the tensioning strut,
on the left-hand side of the vehicle as seen in the direction of
travel. This sensor is a Hall sensor, which is attached to the hydrau­lic cylinder and can be replaced separately.

When the tensioning strut is in its lowest position (tensioned), the
cylinder is fully extended and the Hall sensor sends a signal which
the convertible top operation control unit interprets as "tensioning
strut down".

623_080

Tensioning strut down switch F517

Convertible top box lid up switch F407

The convertible top box lid switch F407 is integrated in the hydrau­lic cylinder responsible for the movement of the convertible top
box lid, on the left-hand side of the vehicle as seen in the direction
of travel. This switch is a Hall sensor, which is attached to the
hydraulic cylinder and can be replaced separately.

When the convertible top box lid is fully open, the cylinder is fully
retracted and the Hall sensor sends a signal which the convertible
top operation control unit interprets as "convertible top box lid
open".

623_081

38

The convertible top box lid switch
F407 is built into the cylinder

Hydraulic cylinder of main bearing

There are no Hall sensors in the hydraulic cylinders of the main
bearing. The hydraulic cylinders of the main bearing are responsi­ble for the movement of the convertible top.

623_082

Hydraulic cylinder of main bearing

Convertible top control unit J256

The convertible top operation control unit J256 is fitted in a com­partment in the boot, behind the trim over the convertible top
operation hydraulic pump V118; this is on the left-hand side of the
vehicle as seen in the direction of travel.
The control unit is integrated in the vehicle's bus system via the
convenience CAN bus and exchanges data with other systems
across this bus. The control unit controls and monitors each indi­vidual convertible top operating cycle. It collects the information
generated by the sensors as well as information from other bus

users, evaluates it and controls the actuators accordingly.

The control unit is also responsible for system diagnostics. If
irregularities are detected in the system or if signals are received at
the wrong time, the convertible top cycle is stopped. An event is
registered and a message is displayed in the dash panel insert
J285.

Convertible top control unit J256

623_083

Convertible top:

malfunction!

You can continue driving

623_084

39

To protect the convertible top operation hydraulic pump V118
against overload, the control unit monitors the runtime of the
convertible top.
If the convertible top has been running continuously for approx. 2
minutes and is closed by this time, the control unit suppresses
operation of the convertible top for approx. 10 minutes.

The maximum continuous duty cycle of the hydraulic pump
is limited to approx. 170 seconds. This means that the hydraulic
pump shuts o after approx. 170 seconds of continuous duty,
regardless of the convertible top’s momentary position.
Operation of the convertible top is subsequently suppressed for
approx. 20 minutes due to the danger of overheating. This is
indicated by the adjacent diagram in the dash panel insert.

Convertible top:

no operation

possible

Convertible top locking motor V223

The convertible top locking motor V223 is attached to the convert­ible top in the middle as seen in the direction of travel.
The motor uses a linkage to actuate the two catch hooks which lock

the roof into the window frame.

623_085

623_086

40

Convertible top

locking motor V223

LinkageCatch hook

Convertible top box lid closed switch F295

The convertible top box lid closed switch F295 is built into the
convertible top locking motor V223. This switch is a Hall sensor.

Convertible top box lid

closed switch F295

Retaining plate

When the motor V223 has locked the convertible top latch, a
retaining plate is within the detection range of the Hall sensor. This
produces a signal which the convertible top operation control unit
detects as "convertible top lock closed".

623_087

Convertible top lock open switch F294

The convertible top box lid open switch F294 is built into the
convertible top locking motor V223. This switch is a Hall sensor
configured as an incremental encoder, or rotary encoder, i.e. the
Hall sensor measures the number of revolutions of motor V223.

The convertible top operation control unit evaluates the signals
generated by the Hall sensor. When the Hall sensor has measured
the corresponding number of revolutions, the convertible top
operation control unit detects "convertible top lock open".

Convertible top lock open switch F294

623_088

41

Emergency operation

In the event of a malfunction, the convertible top can be closed
manually. If possible, the convertible top should be emergency­operated by two persons.

The convertible top cannot be emergency-operated unless the
system is depressurised. The system depressurises automatically
approx. 5 minutes after turning the ignition o. The system can
also be depressurised manually

Closing the convertible top

Conditions:

• Parking brake closed

• All side windows lowered

• Ignition turned o

• Hydraulic system is depressurised

by turning o the ignition and pushing or pulling the convertible
top operating switch E137 for approx. 5 seconds.

The box wrench from the vehicle's tool kit is required for manual
operation of the convertible top.

First of all, the convertible top box lid must be unlocked.
To do this, open the boot lid and fold down the backrest of the
right seat seat as seen in the direction of travel (arrow)
.

Now remove the box wrench from the vehicle tool kit and close the
boot lid. From inside the vehicle, pull down the release loop
(arrow) and unlock the convertible top box lid.

623_014

42

623_015

Push the covers on both sides of the vehicle in the direction of the
arrow until they engage.

As the convertible top box lid can close involuntarily and cause
injury or damage, the convertible top box lid must be held during
the entire opening cycle. Move the convertible top box lid into the
upright position (arrow 1) and hold it there with your hands. After
that, secure the convertible top box lid by pushing back the left
and right-hand hinges (arrow 2). It is no longer necessary to hold
the convertible topbox lid in this position.

623_016

Remove the cover from the trim and apply the box wrench. To open
or disengage the catch hooks, turn the box wrench clockwise as far
as it will go. Then remove the box wrench.

To lift out the convertible top, place the seat next to the vehicle,
grab the convertible top by the front edge and pull it out com­pletely (arrow).
The convertible top tensioning strut must then be raised until the
convertible top box lid can be closed.

623_017

623_018

623_019

43

!

As the convertible top box lid can close involuntarily and cause
injury or damage, the convertible top box lid must be held during
the entire closing cycle. Unlock the convertible topbox lid by
pulling the left and right hinges and slowly close the lid with
manual assistance. Then lower the tensioning strut of the convert­ible top (arrow 2) until it rests on the convertible top box lid.

The final step is to lock the convertible top into the window frame.
For this purpose, push the convertible top onto the window frame
(arrow).

623_020

Then apply the box wrench and turn it anticlockwise as far as it will
go and remove the box wrench. Make sure that the catch hooks
engage in the top sections of the lock and that the convertible top
is correctly locked.

Note

After the convertible top has been emergency-operated, the convertible top box lid is unlocked.

623_021

623_022

Caution: do not reach into the convertible top linkage or other moving parts during emergency operation of the convertible
top. Danger of injury!

Reference

Please refer to the Owner’s Manual for further information on emergency operation.

44

Data bus overview

The overview shows, by way of example, some of the information
exchanged via data bus.

Rear driver’s side indow regulator control unit with
motorJ1016
Rear passenger’s side indow regulator control unit with motor
J1017

Side window closing ← E
Lower side windows ← E

(LIN users of door control units J386 and J387)

Convertible top control unit J256

Locked and closed status of convertible top ← A
Unlocked status of convertible top ← A
Locked and open status of convertible top ← A
Convertible top in intermediate position ← A
Convertible top opening movement ← A
Convertible top closing movement ← A
Boot lid release enabled/disabled ← A
Side window closing → A
Lower side windows ← A
Display convertible top message in instrument cluster display → A
Comfort request via key ← A

Instrument panel control unit J285

Display convertible top message in instrument cluster display ← E

Ambient temperature → A

Door control unit, driver side J386
Front passenger door control unit J387

Locked and closed status of convertible top ← E
Side window closing ← E
Lower side windows ← E
Side window closing → A (to LIN users J1016 and J1017)
Side window opening → A (to LIN users J1016 and J1017)

Onboard power supply control unit J519 (= BCM_01)

Locked and closed status of convertible top ← E
Locked and open status of convertible top ← E
Convertible top in intermediate position ← E
Boot lid release enabled/disabled ← E
Comfort request via key ← E

Rear window heater on/o status → A
NO contact on/o status → A
Terminal 15 status → A
Convenience opening and closing request signal → A
Enable convertible top operation → A
Actual and nominal status of external vehicle locking → A
Boot lid status → A
Sleep mode readiness → A

Speed signal → E
Ambient temperature → E
Convenience opening and closing request signal → E
Sleep mode readiness → E

Rear window heater on/o status → E
NO contact on/o status → E
Terminal 15 status → E
Enable convertible top operation ← E
Boot lid status → E
Actual and nominal status of external vehicle locking → E

Key:

Climatronic control unit J255

Locked and closed status of convertible top ← E
Locked and open status of convertible top ← E
Convertible top opening movement ← E
Convertible top closing movement ← E

Data bus diagnostic interface J533 (Gateway)

Locked and closed status of convertible top ← E
Unlocked status of convertible top ← E
Locked and open status of convertible top ← E
Comfort request via key ← E

Speed signal → A
Sleep mode readiness → A

Access and start authorisation control unit J518

Locked and closed status of convertible top ← E
Convertible top opening movement ← E
Convertible top closing movement ← E
Comfort request via key ← E

Data bus in general

LIN bus

←E Receiving data (input)
→A Sending data (output)

Trailer detector control unit J345

Comfort request via key ← E

623_071

45

Occupant safety

Components

The passive occupant and pedestrian protection system
in the AudiA3’14 comprises the following components and
systems:

• Airbag control unit

• Driver and passenger airbags

• Front side airbags (head-thorax airbag)

• Driver side knee airbag

• Front airbag crash sensor

• Crash sensors for side impact detection in the doors

• Rear crash sensor for side impact detection on heel plate

• Front inertia reel seat belts with electric and pyrotechnic belt
tensioners

• Seat belt warning for all seats

• Seat belt switches on all seats in the seat belt buckles

• Seat occupancy sensor in front passenger seat

• Rollover protection

46

Additional equipment

The vehicle is optionally available with a key-operated disabling
switch for the front passenger front airbags with accompanying
warning lamp.

Due to the dierent statutory provisions and requirements for car
makers in the various markets, equipment specifications may vary.

623_005

47

System overview

The system overview shows, by way of example, the equipment options available for a German-specification vehicle.

48

623_006

Key to illustration

E24 Driver side seat belt switch
E25 Passenger side seat belt switch
E224 Airbag disabling switch,

passenger side (optional)
E258 Rear seat belt switch, driver side
E259 Rear seat belt switch, passenger side

G128 Passenger side seat occupancy sensor
G179 Side airbag crash sensor, driver side
G180 Side airbag crash sensor, passenger side
G256 Rear side airbag crash sensor, driver side

(centre of heel plate)
G283 Front airbag crash sensor, driver side (front end)

J234 Airbag control unit
J285 Control unit in dash panel insert
J533 Data bus diagnostic interface (gateway)
J854 Front left seat belt tensioner control unit (optional)
J855 Front right seat belt tensioner control unit (optional)

K19 Seat belt reminder warning lamp
K75 Airbag warning lamp
K145 Passenger airbag o warning lamp (optional)

N95 Driver side airbag igniter
N131 Passenger side airbag igniter 1
N153 Seat belt tensioner igniter 1, driver side
N154 Seat belt tensioner igniter 1, passenger side
N199 Side airbag igniter, driver side
N200 Side airbag igniter, passenger side
N646 Rollover protection trigger, driver side
N647 Rollover protection trigger, passenger side

T16 16-pin connector, diagnostic port

Powertrain CAN bus

Convenience CAN bus

Diagnostics CAN bus

Input signal

Output signal

49

Side airbag

The side airbags, side airbag igniter, driver side N199, and side
airbag igniter, passenger side N200 are configured as head-thorax
airbags.
The head-thorax airbags are designed to protect not only the body,
but also the head of the front
occupants.

The side airbags on the Audi A3 Cabriolet ’14 have approx. 8.5
litres more capacity than the side airbags on the A3 and the A3
Sportback.

By integrating the side airbags in the front seat backrests, the
airbags are optimally positioned relative to the front occupants
irrespective of the seat setting.

The side airbag igniter activated by the airbag control unit (fusible
resistance wire including a small quantity of pyrotechnics) ignites
the priming charge. This in turn ignites the actual propellant
charge, which in this case is a pyrotechnic solid propellant.
The gases liberated during combustion of the propellant charge
flow through outlet orifices via the filter into the airbag, which

Priming charge

623_011

then unfolds and fully inflates. The seal between the outlet orifices
protects the pyrotechnics against moisture and is destroyed by the
heat generated.

Seal

Filter

(contains the propellant charge)

50

Igniter

623_012

Propellant charge

Outlet orifices

Electrical wiring loom for side airbag

The electrical wiring loom of the front side airbag can be com­pletely replaced on the Audi A3 Cabriolet ’14. Therefore, it is no
longer necessary to replace the complete airbag module if the
wiring loom is damaged.

Cover

609_014a

This is possible because the ground cable used to protect the
pyrotechnics against static connects directly to the airbag module
connector. After contacting the connector, the ground cable
connects the gas generator housing to the body in an electrically
conductive manner.

Locking device

Contact

Mechanically encoded housing

609_014

Reference

Please refer to the information given in ETKA.

Rear side airbag crash sensor, driver side G256

The side airbag crash sensor, rear driver side G256 is a capacitive
acceleration sensor. Although crash sensor G256 is designated
"rear driver side", it is fitted in the rear of the vehicle at the centre
of the heel plate. If G256 senses a side impact, it informs the

airbag control unit. The Y sensor integrated in the control unit
checks the crash signal from G256 for plausibility.

As soon as a deployable impact is detected, the airbag control unit
deploys the belt tensioners and the head-thorax airbag on the
impact-facing side of the vehicle.

623_013

Rear side airbag crash sensor,
driver side G256

51

Rollover protection

Without special modifications, cabriolets would not adequately
protect their occupants during a rollover accident as they do not
have a rigid roof. To counteract this, the Audi A3 Cabriolet ’14 is
equipped with a rollover protection system.

In contrast to the outgoing model, which has a rigid rollover
protection system, the Audi A3 Cabriolet ’14 is equipped with a
retractable rollover protection system.

When deployed, the rollover protection system, together with the
body strengthening measures and the rigid A posts, provides a
survival space for the occupants.

An additional sensor detects an imminent rollover and deploys the
rollover protection system. This sensor is known as a "roll over
sensor" and is integrated in airbag control unit J234. The roll over
sensor cannot be replaced separately.

If an imminent rollover is detected, the rollover protection system
deploys and the belt tensioners are ignited.
In all crash events in which airbags and/or belt tensioners are
ignited, the rollover protection system deploys as a precautionary
measure. If no rollover occurs in the course of the crash, the
rollover protection system can easily be reset due to its reversabil­ity.

623_005a

52

Cassettes with anti-roll bars

The rollover protection system on the Audi A3 Cabriolet ’14 con­sists of two cassettes which accommodate the anti-roll bars and
other components.
Dierent cassettes are used on the driver and passenger sides.
Therefore, care must be taken to ensure that the cassettes are
fitted on the correct side of the vehicle.

Arrow indicating

installation direction

The correct installation direction of the cassettes is indicated by an
arrow on the cassettes. The specified tightening sequence must be
adhered to.

Spring

Release lever

Cassette

Ratchet rail

Rollover protection trigger, driver side N646 and rollover
protection trigger, passenger side N647

The retractable anti-roll bars are preloaded by a spring. The anti­roll bar is held in its lower position by the U bar of the rollover
protection trigger. When the rollover protection trigger is ener­gised by the airbag control unit J234 due to an imminent rollover
or crash, the trigger releases the U bar and the anti-roll bar

U bar

deploys upwards within approx. 130 milliseconds. In the fully
extended position, the pawl engages the ratchet rail and thus
prevents the anti-roll bar from being pushed back.

Pawl

623_007

Spring

623_008

Rollover protection trigger Rollover protection trigger

53

When the convertible top is open, the anti-roll bar travels approx.

320 mm after it deploys. When the convertible top is closed, the

travel of the anti-roll bar is limited by the top.

In this case, it travels approx. 190 mm. The protects parts of the

convertible top from being damaged.

Deployed rollover protection system N647

Bolting points

Ratchet rail

Spring

Pawl

623_009

Preloaded position Fully extended position when

54

convertible top is closed

Fully extended position when
convertible top is open

Resetting a deployed anti-roll bar

Pulling the release lever 1 pulls the pawl 2 out of the ratchet rail 3
and releases the anti-roll bar.

1

The rollover protection system can be reset by pushing back the
anti-roll bar 4 at the same time (the U bar must lock into place).

4

2

Diagnostics

The rollover protection trigger, driver side N646 and rollover
protection trigger, passenger side N647 are monitored by the
airbag control unit J234 and are diagnosable. As soon as the airbag
control unit J234 detects an event, the event is stored. The event
can be diagnosed using the Guided Fault Finding.
The rollover protection system of the Audi A3 Cabriolet ’14 can be
deployed by an actuator diagnostic system. The airbag control unit
J234 counts the number of deployments of the rollover protection
system.

Reference

For further information about the rollover protection system, refer to the Workshop Manual, the Guided Fault Finding and
the maintenance schedule.

3

623_010

The number of deployments is limited and can be determined from
the measurement data. If the number of deployments reaches
127, the event "rollover protection system faulty" is registered by
airbag control unit J234, and the cassettes have to be replaced.
Therefore, unnecessary deployments should be avoided. The
rollover protection system must be inspected by service personnel
according to the maintenance schedule.

55

Engine/gearbox combinations

The engine-gearbox combinations shown below are those available at market launch.

Petrol engines

1.4l TFSI engine

0AJ 02S 0CW

1.8l TFSI engine

2.0l TFSI engine

0CW02S 0D9 quattro

0CQ

56

0D9 quattro 0CQ

Diesel engines

1.6l TDI engine

2.0l TDI engine

02S

Gearbox codes:

0AJ (MQ200_6F)
02S (MQ250_6F)
02Q (MQ350_6F/_6A)
0FB (MQ350_6F)
0CW (DQ200_7F)
0D9 (DQ250_6F/_6A)
0CQ Rear axle final drive unit (Haldex) V

(5th generation Haldex coupling)

02Q/0FB 02Q 0D9 front

0D9 quattro

Breakdown of manufacturer codes:
e.g. MQ350-6F

M Manual gearbox

D Double-clutch gearbox

Q Transverse installation
350 Nominal torque capacity
6 Number of gears
F Front wheel drive

A All-wheel drive (quattro)

0CQ

Reference

For further information about engines and gearboxes as well as the rear axle final drive unit of the Audi A3’13, refer to Self
Study Programme 609 "AudiA3’13".

57

Suspension

Overall concept

The suspension of the Audi A3 Cabriolet ’14 impresses with sporty
handling, superior driving safety and a high level of comfort.
By using key suspension components from the Audi A3 ’13, special
emphasis was placed on lightweight design as part of the Audi
Ultra Strategy. The axle components are part aluminium.

Dynamic suspension is standard, while sports suspension and S
line sports suspension are optional. As compared to the dynamic
suspension system, ride height is 15 mm lower with sports sus­pension and 25 mm lower with S line sports suspension. An
optional suspension with Audi magnetic ride adaptive damper
control and the same ride height as the S line sports suspension
rounds o the product range. The wheels options are adopted from
the Audi A3 saloon*.

623_103

The front and rear axle carriers are connected to the car body by
additional cross pieces. This provides a high level of vehicle rigidity
and vibration comfort.

* See overview of wheel and tyres in SSP 625.

58

623_104

Overview

Continental ESC MK100*
second generation tyre
pressure monitoring
system* as option

15 or 17 inch front wheel
brakes* depending on
engine version

Four-spoke steering wheel* as standard;
four-spoke steering wheels and three-spoke
sports wheel in various versions as options

16“-19“ wheels with "Tire Mobility System" as
standard; a space saver spare wheel is optional
for front wheel drive vehicles

ACC* is optional

Electro-mechanical steering*
with Servotronic function as
standard

Tandem master brake cylinder* with
single 10“ or 11“ brake servo for left­hand drive models

Tandem master brake cylinder* with
single 7“/8“ or 8“/8“ brake servo for
right-hand drive models

623_105

15" rear wheel brakes with elec­tro-mechanical parking brake
(EPB)

Four-link rear axle* for front
wheel drive and quattro drive

McPherson front axle*, subframe
and swivel bearing in combination
with 16“ aluminium brake system

* Identical in terms of design and functional principle to the systems/components on the current Audi A3 ’13.

Reference

For detailed information about the design and function of the electro-mechanical steering system, refer to Self Study Pro­gramme 612 "AudiA3’04 Suspension".

59

Electrical system

Installation locations of control units

Some of the control units shown in the overview are optional and/
or country-specific equipment.

J668

J500

J428

Refer to the current service literature for details of control unit
positions, as well as instructions for installation and removal.

J387

J104

J869

J794

R242

J685

J234

J844

J255

J250

E380

J587

J743

J623

J667

Key:

E380 Multimedia system operating unit
J104 ABS control unit
J234 Airbag control unit
J250 ECD control unit (electronically controlled damping)
J255 Climatronic control unit
J256 Convertible top operation control unit
J285 Control unit in dash panel insert
J345 Trailer detector control unit
J386 Driver side door control unit
J387 Passenger side door control unit

J518

J745

J533

J791

J519

J285

J428 ACC control unit
J492 All-wheel drive control unit
J500 Power steering control unit
J518 Entry and start authorisation control unit
J519 Onboard power supply control unit
J525 Digital sound package control unit
J527 Steering column electronics control unit
J533 Data bus diagnostic interface
J527 Selector lever sensors control unit
J608 Special vehicle control unit

J527

J764

J525

J386

60

J1017

R78

J772

J492

J769

J1016

J623 Engine control unit
J667 Headlight power module, left
J668 Headlight power module, right
J685 MMI display
J743 Twin clutch gearbox mechatronics
J745 Cornering light and headlight range control unit
J764 Electrical steering column lock control unit
J769 Audi lane assist control unit
J770 Audi lane assist control unit 2
J772 Reversing camera system control unit

J345

J843

J608

J256

J770

623_097

J791 Audi parking system control unit
J794 Information electronics control unit 1
J843 Vehicle tracking system interface control unit
J844 Headlight assist control unit
J869 Structure-borne sound control unit
J1016 Rear driver's side window regulator control unit with motor
J1017 Rear passenger's side window regulator control unit with

motor

R78 TV tuner
R242 Front camera for driver assistance systems

61

Topology

Sliding sunroof
adjustment control
unit
J245

Anti-theft alarm
sensor
G578

Alarm horn
H12

L/H head space
heating control
unit
J846

R/H head space
heating control
unit
J847

Rear driver’s side
indow regulator con­trol unit with motor
J1016

Onboard power
supply
control unit
J519

Control unit in dash
panel insert
J285

Steering column
electronics
control unit
J527

Driver side
door control unit
J386

Light switch E1

Control unit for
wiper motor
J400

Rain and light detec­tor sensor
G397

Convertible top
operation control
unit
J256

Humidity sensor
G355

Power module for
left headlight
J667

Headlight power
module, right
J668

or

Power output mod­ule for left LED
headlight

Power output mod­ule for right LED
headlight

Audi side assist
control unit 2
J770

Diagnostic port

Rear passenger’s side
indow regulator con­trol unit with motor
J1017

Passenger side
door control unit
J387

Trailer detector
control unit
J345

Entry and start
authorisation con­trol unit
J518

Electronic steering
column lock control
unit
J764

Vehicle tracking
system interface
control unit
J843

Special vehicle con­trol unit
J608

Climatronic
control unit
J255

1)

Data bus diagnostic interface
J533

NOx sender control
unit
J583

NOx sender control
unit 2
J881

Seat occupancy rec­ognition control
unit
J706

Front left seat belt
tensioner control
unit
J854

Front right seat
belt tensioner con­trol unit
J855

Engine control unit
J623

Airbag
control unit
J234

Twin clutch gear­box mechatronics
J743

62

Refrigerant circuit
pressure sender
G805

Headlight range
Fresh air blower
J126

Humidity sender in
fresh air intake
duct
G657

Air quality sensor
G238

Selector lever sen­sors control unit
J587

Structure-borne
sound control unit
J869

The topology shows all control units with connectivity to the data
bus system. Some of the control units shown here are optional or
country-specific equipment, or due to be introduced at a later
date.

This diagram showing all possible control units is entirely theoreti­cal. For example, the adaptive light and headlight range control
unit J745 is never fitted in combination with the headlight range
control unit J431; only one or the other is available.

Cornering light and
headlight range
adjustment control
unit
J745

Audi side assist
control unit
J769

Front camera for
driver assistance
systems
R242

Adaptive cruise
control unit
J428

ABS control unit
J104

or

or

Headlight range
control unit
J431

Headlight assist
control unit
J844

Battery monitor
control unit
J367

Multimedia system
control panel
E380

MMI display
J685

Information elec­tronics control unit
1
J794

Digital sound pack­age
control unit
J525

Power steering con­trol unit
J500

Four-wheel drive
control unit
J492

Park assist steering
control unit
J791

ECD control unit
(electronically con­trolled damping)
J250

Generator
C

Multifunction
steering wheel con­trol unit
J453

Reversing camera
system control unit
J772

Key:

Powertrain CAN bus Infotainment CAN bus

Convenience CAN bus

Diagnostics CAN bus

Extended CAN bus Suspension CAN bus

"OR" configuration

1)

For more details of heater / air conditioning configurations, refer to SSP 609 "AudiA3’13".

TV tuner
R78

LIN bus

Sub-bus systems

MOST bus

623_098

63

!

Air conditioning

Introduction

Air conditioning system versions

The Audi A3Cabriolet ’14 is available with dierent heating and air
conditioning equipment:

• with a manually controlled air conditioning system

• with an automatically controlled air conditioning system

Depending on country specification, both versions may not always
be available in certain markets.

The automatic air conditioning system has a moisture and enthalpy
control system. The moisture control system is used to detect
windscreen fogging, and the data it provides is factored into
calculating the stop phases in start-stop mode.

Air conditioning compressor regulating valve N 280

Climatronic control unit J255

Enthalpy is a measure of the energy content in the air conditioning
system. In the Audi A3Cabriolet ’14, ecient air conditioning is
ensured by precision control of the fresh-air-to-recirculated-air
ratio inside the vehicle.

In eciency mode (Audi drive select), the air conditioning system
is configured to operate at maximum energy eciency within
temperature thresholds compatible with climate comfort. The
automatic air conditioning system switches to the eco mode
indicated in the Climatronic control unit J255.

R/H head space heating
control unit J847

L/H head space heating
control unit J846

623_096

Left vent frame

Note

No factory-fitted auxiliary heater is available for the Audi A3 Cabriolet ’14.

64

Operation

The various versions dier from one another with respect to their
equipment specification. All versions are optionally available with
a seat heater control button. The seat heater is a three-stage

Some of the rotary controls in the two versions with A/C have
multiple functions, such as turning the cooling or automatic air

conditioning ON/OFF.
system, and the selected heating level is indicated by an LED in the
respective button.

The table summarises the main functions of each version:

Manual air conditioning system Automatic air conditioning system

Control panel and control unit Air conditioning control unit J301 without display Climatronic control unit J255 with display

Functions on the control panel Three rotary controls for:

• Temperature

• Blower

• Air flow distribution

Manual air recirculation button

Heated rear window button

Optional seat heater button, three-stage

AC button

Number of temperature zones 1 2

Two rotary controls for drive and passenger side

vent temperature

AC button

AUTO button

Rotary blower control

Defroster button

Manual air recirculation button

Heated rear window button

Three buttons for setting the air distribution

Optional seat heater button, three-stage

Head space heating option:

the buttons for the two head space heaters in the

front seats are located above the seat heter

button in the Climatronic control unit J255

Air flow and air flow distribution in the occupant

cell

Moisture and enthalpy control system no

AC modes no Two AC modes

Automatic aire recycle control no

Air quality sensor no

Sun sensor no

Interior moisture sensor no

Exterior moisture sensor no

Glove compartment cooling no no

Defroster nozzles

Dash panel vents, left-centre-right

Footwell vents, right/left

Rear footwell vents, right/left

Defroster nozzles

Dash panel vents, left-centre-right

Footwell vents, right/left

Rear footwell vents, right/left

Rear vents

l

• normal

• eco

l

l

l

l

l

65

Head space heating in the Audi A3 Cabriolet ’14

Head space heating is optional for the front seats in the Audi A3
Cabriolet ’14. Sports seats can also be ordered with head space
heading as an option.

Head space heating control unit J846/J847

Head space heating via the air vents on the upper edge of the
backrest provides cozy warmth in the head, neck and shoulder
areas of the driver and front passenger.

Head space heating can be switched on when the engine is
running, even if the convertible top is open.

The front seats with head space heating have no air intakes in the
Audi A3 Cabriolet ’14. The air required for head space heating is
aspirated from the entire seat.
To ensure that enough air flows to head space heating control units
J846 and J847, neither the seat fabric nor the rear seat cover are
hermetically sealed.

PTC heating
element

623_091

Fan

The head space heating system is operated via the head space
heating buttons, which are integrated in the Climatronic control
unit J255 and arranged above the seat heater buttons.

Three settings can be selected.
When the head space heating is "on", this is indicated by LEDs in
the buttons according to setting.

The head space heating intensity level depends on the setting
selected and on the position of the convertible top. If the convert­ible top is open, the heating output of the PTC element and the air
flow rate are increased in each setting.

623_092

Head space heating

button, driver's seat

Climatronic control unit J255

623_093

Seat heater button,

driver's seat

66

Integration of the head space heating into the vehicle's electrical system

The head space heating system has a high power consumption of
approx. 20A per front seat module.

The information provided by the head space heating buttons is
imported by the Climatronic control unit J255 and made available
to the onboard power supply control unit J519 via convenience CAN
data bus. The onboard power supply control unit transmits the
activated head space heating setting and the convertible top open
or closed position by LIN signal.

HSH button,
left

HSH button,
right

Convenience

CAN bus

The left/right head space heating control units then actuate the

corresponding blower setting and the heating output of the PTC

element.

The identical heating space heating modules are then assigned to

the driver's or passenger's seat on the basis of a ground coding.

LIN

623_094

Head space heating (HSH) button, left

Head space heating (HSH) button, right

J255 Climatronic control unit

J519 Onboard power supply control unit

J846 L/H head space heating control unit

J847 R/H head space heating control unit

SH1 Fuse 1 on fuse holder H

SH2 Fuse 2 on fuse holder H

* PIN coding wire

LIN
Convenience CAN bus

67

Infotainment

The same infotainment equipment is available for the Audi A3
Cabriolet ’14 as for the Audi A3 ’13. Therefore, the Modular Info­tainment System is also installed on the Audi A3 Cabriolet ’14.

Reference

For further information on the trim versions and the Modular Infotainment System, refer to SSP 609 – Audi A3 ’13 as well as
SSP 618 – Audi - Modular Infotainment System and the SSP 625 A3 saloon.

Sound system

In terms of design and performance, the sound systems for the
Audi A3 Cabriolet ’14 are basically identical to those for the
Audi A3 ’13.

A special feature of the Audi A3 Cabriolet ’14 is the loudspeaker
control system:

• In the Basic Sound System (8RE), Basic Plus Sound System
(8RM) and Audi Sound System (9VD), the output level is
increased by approx. 2 dB when the convertible top is open.

• In the Bang and Olufsen Sound System (9VS), a special sound
tuning feature is activated depending on the convertible top's
position. In addition, the sound tuning is adapted dynamically

to the ambient noise by the additional microphone (VNC =
vehicle noise compensation).

Because of the rapid pace of development in the field of infotain­ment, the Modular Infotainment System in the Audi A3 Cabriolet
’14 features new technology and functions. These new technical
features are identical to those in the A3 saloon.

With regard to the sound systems, the following dierences exist
between the Audi A3 Cabriolet ’14 and the Audi A3 ’13:

Audi sound system (9VD)

The system comprises 9 speakers including centre speakers and a
6-channel amplifier with a total power output of
140W integrated in information electronics control unit 1 J794.
There is no subwoofer. This task is performed by the rear bass
speakers.

68

Bang & Olufsen Sound System

Surround sound is provided by 13 high-performance speakers
including centre speakers and, instead of a subwoofer, two special
Kickbass speakers (bass speakers R17/R15) each delivering 100W
for powerful bass.

R20 R208 R22

R23 R104

The speakers are driven through an external 13-channel amplifier
(digital sound package control unit J525) with a total power output
of 625W.

R17

R106

R16

Key:

J525 Digital sound package control unit
R14 Treble loudspeaker, rear left
R15 Bass loudspeaker, rear left
R16 Treble loudspeaker, rear right
R17 Bass loudspeaker, rear right
R20 Treble loudspeaker, front left
R21 Bass loudspeaker, front left
R22 Treble loudspeaker, front right
R23 Bass loudspeaker, front right
R103 Mid-range loudspeaker, front left
R104 Mid-range loudspeaker, front right
R105 Mid-range loudspeaker, left
R106 Mid-range loudspeaker, right
R208 Centre speaker

R103 J525R21

R14

R105

R15

623_100

69

Aerial system

The aerials in the Audi A3 Cabriolet ’14 are chiefly fitted in the
door shoulder as film aerials.
To ensure optimal AM reception when the convertible top is open
and closed, two aerials for AM reception are fitted in the Audi A3
Cabriolet ’14.
The AM1 aerial is integrated in door shoulder, while aerial AM2
R11 is built into the convertible top.

When the convertible top is closed, the signals from the convert­ible top aerial and aerial amplifier R111 are combined with the
signal from aerial amplifier R24 to give better reception. If the
convertible top is open, only aerial amplifier R24 provides a signal.
If a TV tuner is fitted, its aerials are integrated into the windscreen
at the top.

R83 R56 R50 R82

R55

Key:

R11 AM2 aerial
R24 AM1/FM1 aerial amplifier
R50 GPS aerial
R55 TV1 aerial
R56 TV2 aerial
R65 GSM telephone aerial
R78 TV tuner
R82 DAB/TV1 aerial amplifier
R83 TV2 aerial amplifier
R111 AM2 aerial amplifier
R112 FM2/TV3 aerial amplifier
R172 SDARS aerial
R183 FM2 film aerial 2 R183
R205 LTE aerial 1
R248 AM1/FM1 film aerial 1
R267 LTE aerial 2

R183

R112

70

R11

R24

R248

R111R78

623_102

R65

R172

623_101

R267

R205

71

Overview of versions

The following table shows the main equipment features and optional equipment.

Audi Radio (Europe only) MMI Radio MMI Radio with Connectivity Package MMI Radio with Navigation Package MMI Navigation plus

Standard equipment

2.5“ monochrome display with
270x94pixel resolution

5.8“ TFT colour monitor with
400x240pixel resolution

5.8“ TFT colour monitor with
400x240pixel resolution

Prewired for navigation 2D navigation system with SD card 3D hard drive navigation system

AM/FM radio with phase diversity AM/FM radio with phase diversity AM/FM radio with phase diversity and TMC tuner AM/FM radio with phase diversity and TMC tuner

Car settings via Setup Car menu Car menu Car menu Car menu

CD drive (MP3, WMA) CD drive (MP3, WMA, AAC*) CD drive (MP3, AAC, WMA) CD drive (MP3, AAC, WMA) DVD drive (audio/video, MP3, AAC, WMA, MPEG4)

AUX In socket AUX In socket Audi music interface (UE7) Audi music interface (UE7) Audi music interface (UE7)

Basic sound system (2x20watts)
(8RE)

Optional equipment

Basic Plus Sound System (4 x 20 watts) (8RM)
(country-dependent)

Single SD card reader Twin SD card readers Twin SD card readers Twin SD card readers

Basic Plus Sound System (4 x 20 watts) (8RM)

Bluetooth interface for HFP and A2DP (9ZX)
Audi music interface (UE7)

Audi Phone Box for HFP and A2DP (9ZE) Audi Phone Box (9ZE)

DAB or SDARS digital radio (QV3)

Audi Sound System (9VD) Audi Sound System (9VD) Audi Sound System (9VD) Audi Sound System (9VD)

Basic Plus Sound System (4 x 20 watts) (8RM) Basic Plus Sound System (4 x 20 watts) (8RM) Basic Plus Sound System (4 x 20 watts) (8RM)

Bluetooth interface for HFP and A2DP (9ZX) Bluetooth interface for HFP and A2DP (9ZX) Bluetooth interface for HFP and A2DP (9ZX)

DAB or SDARS digital radio (QV3) DAB or SDARS digital radio (QV3) DAB or SDARS digital radio (QV3)

Bang & Olufsen Sound System (9VS) Bang & Olufsen Sound System (9VS) Bang & Olufsen Sound System (9VS)

72

* The MMI Radio can only play back AAC files if optional equipment is fitted.
If an Audi A3 is fitted with Audi connect (9ZK) together with Audi Phone Box (9ZE), the resultant new PR No. is 9ZC.

5.8“ TFT colour monitor with
400x240pixel resolution

Basic Plus Sound System (4 x 20 watts) (8RM) Basic Plus Sound System (4 x 20 watts) (8RM)

Audi Phone Box (9ZE) Audi Phone Box (9ZE)

7.0“ TFT colour monitor with
800x480pixel resolution

MMI touch

AM/FM radio with phase diversity and background
tuner

Jukebox with approx. 11GB of memory

Audi connect (9ZK)

DAB or SDARS digital radio (QV3) DAB or SDARS digital radio (QV3)

73

Service

Inspection and maintenance

The following service intervals are displayed:

• Oil change service

• Mileage-based service events

• Time-based service events

Example of a service interval display in the MMI

Flexible service event

Mileage-based

service event

Time-based

service event

Next oil change:

--/--

Next inspection:

in 30,000 km / 640 days

CAR - Systems

In new vehicles, the next oil change due box (flexible servicing
event) is initially blank. This interval has to be computed from the
driving profile and engine load and is not displayed until approx.
500 km have been covered. The display "Oil change due" then
switches to "Next oil change".

Overview of maintenance intervals for vehicles in Europe

Car

Service intervals

Handbook

623_099

The value in the mileage-based servicing events box is now 30,000
km for new vehicles and is decremented in increments of 100 km.
The value in the field for the time-based servicing events is now
730 days (2 years) for new vehicles and is updated on a daily basis
(starting at a total mileage of approx. 500 km).

1.6l TDI 2.0l TDI 1.4l TFSI 1.8l TFSI 2.0l TFSI

Oil change between 15,000 km / 1 year and 30,000 km / 2 years

Inspection 30,000 km / 2 years 30,000 km / 2 years 30,000 km / 2 years 30,000 km / 2 years 30,000 km / 2 years

Pollen filter 30,000 km / 2 years 30,000 km / 2 years 30,000 km / 2 years 30,000 km / 2 years 30,000 km / 2 years

Air filter 90,000km 90,000km 90,000km 90,000km 90,000km

Spark plugs — — 60,000 km / 6 years 90,000 km / 6 years 90,000 km / 6 years

Fuel filter 90,000km 90,000km — — —

Timing gear 210,000 km

3)

210,000 km

3)

210,000 km

3)

Chain (lifetime) Chain (lifetime)

Brake fluid Change after 3, 5, ... years

1)

Haldex oil change

Gear oil change

1)

quattro

2)

S-tronic

3)

Replace toothed belt

2)

— 3 years — 3 years 3 years

— 60,000km —

60,000km
quattro only

60,000km

Note

The specifications in the current service literature always apply.

74

Self Study Programmes

For further information about the technology in the AudiA3 ’13, refer to the following Self Study Programmes.

SSP 608 Audi1.6l/2.0l 4-cylinder TDI engines, order number: A12.5S00.92.20

SSP 609 AudiA3 ’13, order number: A12.5S00.93.20

SSP 610 AudiA3 ’13 onboard power supply and networking, order number: A12.5S00.94.20

SSP 611 AudiA3 ’13 vehicle electronics and driver assistance systems, order number: A12.5S00.95.20

SSP 612 AudiA3 ’13 suspension, order number: A12.5S00.96.20

SSP 625 AudiA3 saloon, order number: A13.5S01.09.20

75

Audi

Vorsprung durch Technik

623

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Technical specifications are subject to
change.

Copyright

AUDI AG

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AUDI AG

D-85045 Ingolstadt
Technical status 10/13

Printed in Germany
A13.5S01.07.20