With the introduction of the Audi Q5, Audi is extending its model range to include a compact SUV that sets new
standards in its class. In addition to the Audi Q7 and the Audi A6 allroad quattro, Audi is now introducing a third model
for the off-road segment.
The Audi Q5 will be manufactured at the Ingolstadt facility, this being a logical choice of location because the Audi Q5
is based on components used in the Audi A4 ‘08.
The new Audi Q5 combines the dynamism of a sports saloon with highly variable interior and versatile options for
leisure-time and family use. Strong and efficient engines, Quattro permanent all-wheel drive and agile running gear
have been brought together to create a superior technology package for both on and off road driving. Highlights such
as the innovative S tronic seven-speed dual-clutch gearbox and the Audi drive select driving dynamics system ar e the
evidence that substantiates the Q5's claim to Vorsprung durch Technik. The sportiest SUV in its class, it is dynamic,
multifunctional and comfortable.
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The objectives of this Self-Study Programme
This Self-Study Programme describes the design and function of the new Audi Q5. After you have worked your way
through this Self-Study Programme, you will be able to answer the following questions:
– How is the bodyshell designed, and what materials are used?
– Which engines and gearboxes are installed?
– Which modifications have been made to the running gear and the brakes?
– What are the special features of the electrical system?
– How does the air conditioning system in the Audi Q5 function?
– What are the special features of the maintenance concept which have to be kept in mind?
The Self-Study Programme teaches the design and function of new vehicle models,
new automotive components or new technologies.
The Self-Study Programme is not a Repair Manual.
The values given are for illustration purposes only and refer
to the software version valid at the time of publication of the SSP.
For information about maintenance and repair work, always refer to the current technical literature.
NoteReference
Introduction
Summary
Dimensions
* Max. headroom
Specifications are given in mm
Specified dimensions refer to kerb (unladen)
weight of vehicle
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** 2400 kg braked on an 8 % gradient
2000 kg braked on a 12 % gradient
750 kg unbraked
Length in mm4629Internal width, front in mm1465
Width in mm1880Internal width, rear in mm1432
Height in mm1653Headroom, front in mm1043
Track width, front in mm1617Headroom, rear in mm990
Track width, rear in mm1613Through-loading width in mm1050
Wheelbase in mm2807Load sill height in mm693
Trailer load in kg**750/2400/2000Luggage capacity in l540
Kerb weight in kg1865Fuel tank capacity in l75
Max. allowable gross weight in kg2445Drag coefficient in c
6
w
0.33
Interior dimensions
Off-road performance
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Wading depth
Ground clearance
Overhang angle
Max. climb angle
Breakover angle
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7
Body
The body of the Audi Q5
The steel body of the Audi Q5 with its function and
weight optimised design is yet another example
of advanced body design by Audi. To meet the
demands on the Audi Q5, the various body
components have been made using steel materials
designed to optimally absorb the structural and
dynamic forces to which the vehicle can be
subjected both in day-to-day use and in the event
of a collision.
For this reason, only 30.8 % of the components in
the Audi Q5 are manufactured from regular deepdrawn steel. High and advanced high strength
steels account for nearly 60 % of all materials used a significant proportion.
Parts manufactured from ultra-high-strength, diequenched steels account for over 9 %, which is
likewise a relatively large proportion.
However, when manufacturing parts from this
material, the zinc coating otherwise normally
applied to Audi body panels would evaporate
during the heat shaping process, because zinc has a
boiling point of 907 °C and the process temperature
is higher than that.
For this reason, the sheet-metal panels used for
making die-quenched body parts are hot-dip coated
with aluminium, which also has the advantage of
protecting the steel surface against corrosion.
Whereas steel was also the material of choice for
the doors, the engine hood and tailgate are made
of aluminium.
8
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Ultra-high-strength die-quenched 9.1 %
Ultra-high-strength 3.3 %
Advanced high strength 12.3 %
High strength 44.5 %
Regular grade steel 30.8 %
9
Body
The body of the Audi Q5
To optimise the performance of the B post in a sideimpact collision, it is important that the lower
section of the post be able to absorb more
deformation energy than the upper section - which,
ideally, should have a very rigid construction.
This was made possible, e.g. in the Audi A4 ‘08,
through the use of tailored blanks.
Rear longitudinal beam,
partially die-quenched
The B post in the Audi Q5 is partially heated and
then reshaped, as a result of which the upper
section of the post has properties an ultra high
strength die-quenched steel and the lower section
those of an ultra-high-strength steel.
This process is also applied to the rear longitudinal
beams. Here, the rearmost section is able to absorb
more deformation energy than the more rigid front
section of this component.
B post,
partially die-quenched
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10
Repair concepts
The increased use of ultra-high-strength steels
necessitates the use of body repair methods
adapted specially to suit the properties of the
materials. High heat input welding will irreversibly
compromise the strength and structure of the
component due to microstructural changes in the
material.
A body structure thus welded cannot, therefore,
reliably meet the requirements.
It is important to apply a very high contact pressure
and a precision controlled electrical current during
Following extensive tests, modern spot welding
machines that meet precisely these requirements
are now available through Workshop Equipment.
MAG gas shielded arc welding may only be
performed on these high-grade steels in specific
areas, on a case-by-case basis. They are described in
the workshop literature. After miscellaneous tests
and crash simulations on repaired ultra-highstrength, die-quenched steel body parts of the
Audi Q5, Audi has approved two repair points at
which MAG welding is permissible:
spot welding work on ultra-high-strength diequenched steels.
1. B post upper section (defined cutting position, reinforcement required)
Cutting position
on B post
Weld seam
B post reinforcement
2. Partial replacement of side member/sill at inner front (defined cutting position, reinforcing required)
Cutting position
Inner side member
Reinforcements
Side member
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11
Occupant protection
Occupant protection system in the Audi Q5
On the following pages you will be provided with an overview of the occupant pr otection system in the
Audi Q5. For further information about the restraint systems in the Audi Q5, please refer to Self-Study
Programmes 392 Audi A5 and 409 Audi A4 ’08. The diagrams and illustrations shown in the chapter on
"Occupant protection" are intended to aid understanding.
The occupant protection system in the Audi Q5 consists of the following components and systems:
– Airbag control unit
– Driver airbag, adaptive
– Front passenger airbag, adaptive
– Front side airbags
– Head airbags
– Front airbag crash sensors (upfront sensors)
– Crash sensors for side impact detection in the doors
– Crash sensors for side impact detection on the C posts
– Front belt tensioners with adjustable belt force limiters
– Battery disconnect safety device
– Seat belt reminder for driver and front passenger
– Seat belt switch, driver and front passenger side
– Seat occupancy sensor in the front passenger seat
– Driver and front passenger seat position sensors
The vehicle can also be equipped with rear side airbags and/or a key switch for deactivating the front
passenger airbag, complete with a warning lamp.
On account of the different requirements and statutory regulations of the various markets on vehicle
manufacturers, equipment specifications - particularly for the US market - can vary.
Legend:
E24Driver side belt switch
E25Front passenger side belt switch
E224Airbag disabling key switch,
front passenger side (optional)
G128Seat occupancy sensor, front passenger side
G179Side airbag crash sensor, driver side
(driver door )
G180Side airbag crash sensor, front passenger
side (front passenger door)
G256Rear side airbag crash sensor,
driver side (C post)
G257Rear side airbag crash sensor,
front passenger driver side (C post)
G283Driver side front airbag crash sensor
(left front end)
G284Front passenger side front airbag crash
sensor (right front end)
G551Belt force limiter, driver side
G552Belt force limiter, front passenger side
G553Seat position sensor, driver side
G554Seat position sensor, front passenger side
J393Convenience system central control unit
J533Data bus diagnostic interface (Gateway)
J623Engine control unit
K19Seat belt warning system warning lamp
K75Airbag warning lamp
K145 PASSENGER AIRBAG OFF warning lamp
(optional)
N95Airbag igniter, driver side
N131 Front passenger side airbag igniter 1
N132 Front passenger side airbag igniter 2
N153 Driver seat belt tensioner igniter -1N154 Front passenger seat belt tensioner igniter -1N199 Side airbag igniter, driver side
N200 Side airbag igniter, front passenger side
N250 Driver side airbag igniter -2N251 Driver side curtain airbag igniter
N252 Front passenger side curtain airbag igniter
N253 Battery isolation igniter
T16 16-pin connector, diagnostic port
J234Airbag control unit
J285Control unit with display in dash panel insert
12
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13
Occupant protection
Driver airbag in the Audi Q5
Driver side airbag igniter 1 N95
Driver side airbag igniter -2- N250
All Audi Q5 models distributed world-wide are
equipped as standard with an adaptive driver
airbag.
This driver airbag has a single-stage solid fuel
generator with an additional external igniter.
Igniter 1 is activated electrically by the airbag
control unit J234, thus igniting the ignition charge.
Metal filter
Foil
Vent hole
Nozzle ports
Combustion of the ignition charge causes the
pressure inside the capsule to increase until it
bursts, thereby igniting the propellant charge
through the nozzle ports.
If the gas pressure produced by the combustion of
the propellant charge exceeds a predefined value,
the foil opens the vent holes. The gas is thus free to
flow unobstructed through the metal filter to the
airbag. The airbag unfolds and is inflated.
Metal filter
Foil
Vent hole
Propellant charge
Ignition charge
Driver side airbag igniter -2- N250 is located inside
the airbag module.
It is integrated in a unit comprising the baseplate, a
control ring with ports and the distributor housing.
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Propellant charge
Capsule
Igniter 1
Distributor housing
Igniter 2
Control ring
Retaining clip
Baseplate
14
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As long as igniter 2 is not activated, the supplementary vent holes in the distributor housing are kept
sealed by the control ring.
The gas from the gas generator flows out through
the upper ports in the distributor housing and
directly into the airbag. A retaining clip holds the
control ring in the rest position. This prevents
unwanted rotation of the control ring.
Distributor housing
Igniter 2
Control ring
Retaining clip
Baseplate
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The airbag control unit J234 decides when to
activate igniter 2 N250 according to the force of
the impact and the driver's seating position.
When igniter 2 is ignited, the developing gas
pressure displaces a pin, which in turn rotates the
control ring. The supplementary vent holes in the
distributor housing are opened.
The residual gas from the gas generator can now
partially vent directly into the atmosphere.
The gas discharging from the airbag can also
escape into the atmosphere through the orifices in
the distributor housing. Thereby, the airbag is not
inflated any further and thus "adapted" to the
occupants.
Control ring
Baseplate
Pin
Distributor housing
Igniter 2
Retaining clip
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The gas generator of the driver airbag module is oscillatingly mounted in a rubber ring in a fashion depending
on model type. This minimises steering wheel vibration.
15
Running gear
Axles
The Audi Q5 comes as standard with standard running gear (production control number 1BR) in combination
with quattro drive. An electronic damping control system is optionally available in combination with Audi
drive select.
Front axle
The front axle design is basically the same as that of the Audi A4 ‘08. The newly developed components are
indicated below.
Drive shaft
Track width
adjustment
(+29 mm)
Anti-roll bar
higher axle load,
larger track width (+58 mm)
than Audi A4
Springs/shock absorbers
new set-up
Upper wishbone bearing
new set-up
Subframe
Geometric modification due to
larger track width than Audi A4
16
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Rear axle
The front axle design is basically the same as that of the Audi A4 ‘08. The newly developed components are
indicated below.
Anti-roll bar:
Shock absorbers:
new set-up
increased volume
higher heat output
new set-up, larger track width (+62 mm)
than Audi A4
Drive shaft:
track width adjustment
(+31 mm)
Wheel carrier:
higher axle load than Audi A4
Deleted: ball joint
Subframe:
adjusted track width of
cross beam (+62 mm)
Stone chip protection:
Geometric modification due to
larger spring diameter than Audi A4
Track rod:
Adaptation to larger
spring diameter:
Installation rotated
through 180°
Rear wheel carrier/trapezoidal
link bearing:
Elastomer joint
higher axle load than Audi A4
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17
Running gear
Damping control system
The damping control system is available as optional equipment in combination with Audi drive select under
production control number 1BL. The damping control system is designed, functions and operated in the
same way as the system in the Audi A4 ‘08. The detail modifications to the components are indicated below.
Body acceleration sensors
G341 – G343 on the front and rear axles:
Geometric modification due to
adaptation to body contour
Front and rear axle shock absorbers:
modified shock absorber set-up
ECD (electronically controlled damping)
control unit J250:
Software adjustment
18
Shock absorber damping adjustment valves
N336 – N339 on front and rear axles:
modified set-up
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Level control system senders
G76 – G78, G289 on front and rear axles:
Geometric modification due to adaptation
to body contour
Steering system
The steering system of the Audi Q5 is basically designed and functions in the same way as the steering
system in the Audi A4 ‘08. A hydraulic rack and pinion steering system with a mechanically adjustable
steering column and power steering lock are used. The speed-sensitive power steering system is standard
equipment with engines developing 140 kW or higher. The dynamic steering system already featured in the
Audi A4/A5 ‘08 is optionally available in combination with Audi drive select. The detail modifications to the
components are indicated below.
Steering wheel:
Modifications to
Steering column:
larger rake angle due to
modified mounting bracket
modified adjustment range:
60 mm horizontal; 44 mm vertical
the airbag system
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Steering gear:
The steering rack is 52 mm longer than in
the Audi A4 ‘08 due to the larger track width,
and piston diameter has been enlarged by
2 mm to 44 mm due to the higher axle load
Oil reservoir:
The oil reservoir with fine filter previously
used in the Audi A6 has been adopted
Dynamic steering
The dynamic steering system is designed and functions in the same way as the system in the Audi A4 ‘08.
The control software in the active steering control unit J792 has been adapted to suit the vehicle's
characteristics and the extended conditions of use.
19
Running gear
Steering pump
The volume-flow controlled vane steering pumps as
used previously in the Audi A4 ‘08 are also used in
all models which do not have dynamic steering.
Compared to the Audi A4 ‘08, the maximum delivery
rate (shut-off point) has been increased to 8.5 l/min
from 7.9 l/min to allow for the higher axle load of
the Audi Q5.
Models which have dynamic steering come
equipped with the steering pump with ECO function
as used previously in the Audi A4 ‘08 with dynamic
steering.
Volume-flow controlled vane steering pump
Reference
For detailed information about the design and mode
of functioning of the dynamic steering system,
please refer to SSP 402 - Dynamic Steering in the
Audi A4 ‘08.
For further information about the vane pump,
please refer to SSP 394 - Audi A5 - Running Gear.
Brake system
Wheel brakes
The wheel brakes are based on the proven concept
of the Audi A4 ‘08. In the Audi Q5, adaptation of the
wheel brakes to the higher performance demands
(larger wheel diameter, higher kerb weight) is
provided by a modified hydraulic transmission.
To this end, uprated brake pistons are used in
combination with large brake pad surfaces and
larger brake discs.
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The brake discs have been designed for high
cooling capacity by means of special cooling ports
and friction interfaces. Special emphasis was
placed on systematic lightweight construction
during the development process. The front axle is
fitted with the proven FBC floating calipers
as used previously on the Audi A4 ‘08. This brake
caliper concept maximises rigidity and minimises
weight by means of composite technology (nodular
cast iron floating caliper, aluminium casing).
Reference
For detailed information about the design and
mode of functioning of the FBC brake calipers,
please refer to SSP 394 Audi A5 - Running Gear.
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20
Front axle
Engine4-cylinder 2.0l TDI
4-cylinder 2.0l TFSI
V6 3.0l TDI
V6 3.2l TFSI
Minimum wheel size16“17“
Brake typeTRW-FBC-60 16“TRW-FBC-6017“
Number of pistons11
Piston diameter (mm)6060
Brake disc diameter (mm)320345
Rear axle
Engine4-cylinder 2.0l TDI
4-cylinder 2.0l TFSI
V6 3.0l TDI
V6 3.0l TDI
Minimum wheel size16“17“
Brake typeCII-43-EPB 16“CII-43-EPB 17“
Number of pistons11
Piston diameter (mm)4343
Brake disc diameter (mm)300330
Brake disc
Brake caliper
Brake pad
Gauge pin T40139
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The rims and brake calipers have been designed in such a way that the thickness of the brake pads at all
wheels can be measured using gauge pin T40139.
21
Running gear
Brake system
Electromechanical parking brake
The electromechanical parking brake EPB used in the Audi Q5 is designed and functions in the same way as
the system in the Audi A4 ‘08.
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Reference
For detailed information about the design and mode
of functioning of the electromechanical parking brake
and the brake servo, please refer to SSP 394 - Audi A5 Running Gear.
Brake servo, master brake cylinder
The brake servo and master brake cylinder of the Audi Q5 are designed and function in the same way as
those of the Audi A4 ‘08. The characteristic of the brake servo have been adapted to the modified hydraulic
transmission system of the brake system.
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22
ESP
A new ESP generation by Bosch with the designation ESP Plus is used in the Audi Q5. Compared
to the ESP 8.1, the ESP Plus system has been
optimised in design and functioning.
The basic functions of EBD, ABS, EDL, TCS, ESP,
EBC etc. are identical to those of the ESP 8.1.
In addition, there are new functions - which are
explained below.
The electric pump drive motor has been uprated,
thus optimising its dynamic control behaviour.
ESP Offroad Mode
The ESP Offroad Mode has been developed specifically for use in rough terrain. When ESP Offroad Mode is
active, the ESP control processes are adapted to the offroad conditions. ESP control processes are effected
much later, thereby allowing drift movements about the vehicle's vertical axis and partial wheel spin.
This ensures that optimum traction is achieved on soft or loose surfaces.
ESP Offroad Mode can be activated using the ESP Off switch.
When ESP Offroad Mode is active, "ESP Offroad" is displayed in the driver information system or on the
centre display and indicated by the activated ESP symbol.
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23
Running gear
Brake system
ESP control
Automatic offroad detection
In 2009, for the first time, the existing ESP functions
will be extended to include an automatic offroad
recognition feature. This feature will be implemented by evaluating the wheel oscillation as
indicated by the wheel speed signals.
When offroad conditions are detected, the control
characteristics of the ABS, TCS and EDL systems are
modified accordingly. Higher slip values are allowed
at the wheels.
When braking, for example, partial locking of the
wheels causes wedges to form in front of the
wheels due to the displacement of loose surface
material. These wedges increase motion resistance,
i.e. they provide additional braking. If the driver has
activated the ESP Offroad Mode using the ESP OFF
button, offroad conditions are detected even more
quickly than by automatic detection.
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Downhill Assist Control
In the Audi Q7, the function is activated by depressing the foot brake.
In the Audi Q5, the Downhill Assist Control can, for
the first time, be activated by a separate switch.
Unlike comparable systems of other manufacturers,
the system in the Audi Q5 is not preset to a very low
constant nominal speed. The control variable is the
speed at which the vehicle is travelling on entering
the gradient. The system basically functions in the
same way as the system in the Q7. Like in the Q7,
the function of the EBD is modified when reversing
by applying increased braking force to the rear axle.
This is detected by the fact that reverse gear is
engaged.
Downhill Assist Control is also active when no gear
is engaged or the clutch is actuated.
24
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Downhill Assist Control
The intervention range has been extended over the Audi Q7 and, in the case of the Audi Q5, is at speeds of
between 9 kph and 30 kph. The function can be switch-operated at speeds of up to 60 kph. The function is
automatically deactivated when a speed of 60 kph is exceeded.
Status
active
Standby
deactivated
< 9≤ 60≤ 30
Speed in kph
When Downhill Assist Control is active and in Standby mode, this is indicated to the driver in the centre
display at speeds of up to 30 kph. The LED in the switch lights up when the function is activated at speeds
of up to 60 kph.
Towing vehicle and trailer stabilisation
system
The towing vehicle and trailer stabilisation system
basically functions in the same way as the system
implemented already on other Audi models.
The oscillation within the typical frequency range for
a towing vehicle and trailer (approx. 0.5 Hz to 1.5 Hz)
is evaluated by the ESP system. If a defined
amplitude threshold is exceeded three times in
succession, the stabilisation system is activated.
Depending on yaw velocity, the towing vehicle and
trailer are stabilised in two phase. In the first phase,
the wheels are braked asymmetrically.
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The aim is to stabilise the towing vehicle and trailer
without a large amount of longitudinal deceleration
(max. approx. 1.5 m/s2). If this is insufficient, it is
followed by a second phase in which all four
wheels are braked with the aim of achieving high
longitudinal deceleration (approx. 3.5 m/s2).
The braking operations are performed below the
ABS intervention threshold. An active stabilisation
system is indicated by flashing of the ESP warning
lamp. At the same time, the brake lights are
activated.
25
Running gear
Roof rack detection
For the first time in a SUV, the Audi Q5 has the
ability to detect a mounted roof rack and take this in
account in the ESP control logic. A roof rack has a
significant effect on the centre of gravity height of
a vehicle. The control characteristics of the ESP
system in the Audi Q5 are adapted to the change in
centre of gravity height.
A Hall sensor, connected to the ABS control unit/
ESP by a discrete line, is integrated in the standard
8J x 17 ET 39 (1)
Forged aluminium
wheel, painted
235/65 R17
(basic wheel for all
engine versions)
8J x 17 ET 39 (2)
Cast aluminium
wheel, painted
235/65 R17
(optional for all
engine versions)
The Audi Q5 is equipped as standard with a tyre repair kit. A size 195/75-R18 folding wheel
is optionally available.
8J x 18 ET 39 (3)
Cast aluminium
wheel, painted
235/60 R18
(optional for all
engine versions)
8J x 18 ET 39 (4)
Cast aluminium
wheel, painted
235/60 R18
(optional for all
engine versions)
8J x 19 ET 39 (5)
Cast aluminium
wheel, painted
235/55 R19
(optional for all
engine versions)
8J x 19 ET 39 (6)
Cast aluminium
wheel, polished
235/55 R19
(optional for all
engine versions)
8.5J x 20 ET 33 (7)
Cast aluminium
wheel, painted
255/45 R20
(optional for all
engine versions)
8.5J x 20 ET 33 (8)
Cast aluminium
wheel, Chrome clad
255/45 R20
(optional for all
engine versions,
available in USA
only)
7.0J x 17 ET 37 (9)
Forged aluminium
wheel, painted
235/60 R17
(winter wheel for all
engine versions)
27
Electrical system
Fuses and relays
The electrical system of the Audi Q5 is basically the
same as that of the Audi A4 ‘08.
This applies equally to the installation locations of
the fuseboxes and relay panels, the CAN node
connectors and the control units.
Fuse panel and external
starter connection in
plenum chamber
Fuse panel in dash panel
on right and CAN node
connector
The gateway, battery monitor control unit, alternator
and external starter connection are also the same as
for the Audi A4 ‘08.
Relay panel and onboard power
supply control unit holder in
driver footwell
Relay and fuse panel in
luggage compartment
on right
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Relay and fuse panel
in electronics box
Connector station and CAN
node connector on A post,
bottom left
Fuse panel in dash panel
on left
Fuse panel and battery
disconnect safety device at
battery positive terminal
The following control units are new features of the Audi Q5:
– Rear lid control unit J605*
– Rear lid control unit -2- J756*
– Headlight assist control unit J844**
– Information electronics control unit -1- J749 (vehicles with MOST bus)**
– External radio sources connection R199 (vehicles with infotainment CAN)**
– Four-wheel drive control unit J492***
– Sunroof roller blind control unit J394*
* installed on Audi Q5 only
**dependent on trim version (also featured on the Audi A4 and A5)
*** dependent on trim version (to be rolled out at a later date on models including the Audi A4 and A5)
Reference
For further information, please refer to
SSP 395 - Audi A5 – Onboard Power Supply
and Networking and SSP 409 Audi A4 ‘08.
28
Front outside lights
Versions
As with the Audi A4 ‘08, a distinction is also made between three different headlight versions in the Audi Q5:
*ECE for the European market
**SAE version for the North American market
The headlights on the Audi Q5 are mounted on a
bracket which allows them to be moved approx.
50 mm after removing a cover and the headlight
mounting screws. Thus, enough space is available
for replacing the bulbs. No provision is currently
made for the replacement or repair of faulty LEDs.
Side reflector (ECE*)/
sidemarker (SAE**) – LED
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Note
For further information on the replacement
of light bulbs, please refer to the current
service literature.
29
Electrical system
Rear outside lights
Layout of the rear lamps
As with the Audi Q7, a distinction is also made
between main rear lights - in the tailgate - and
auxiliary rear lights - in the bumper. Since the main
rear lights swing upwards with the tailgate when it
is opened, a set of fixed auxiliary rear lights must be
installed on the rear bumper.
Main rear light
in the tailgate
The brake/tail light and the turn signal lamp are
housed in the main rear light.
The auxiliary brake/tail lights and turn signals as
well as the reversing lights and the rear fog lights
are integrated in the auxiliary rear lights.
Main rear light
in the tailgate
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Auxiliary rear lights
in the bumper
30
Auxiliary rear lights
in the bumper
Versions
The rear lights come in various versions:
– Basic version – in combination with the halogen
headlight
– LED version in combination with the bi-xenon
headlight or bi-xenon headlight with adaptive light
– LED version for North American markets
Rear lights – basic version
1
2
3
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4
5
Function in the tailgateTypePower outputDuty cycle
Unlike the Audi Q7, all rear lights on the Audi Q5 are activated by the convenience electronics central control
unit J393. The J393 is also responsible for switching over the rear lights.
The "third brake light" function is provided by 18 LEDs integrated in the tailgate upper section.
32
Switchover of the rear lights
Symmetrical switchover on opening the tailgate
When the tailgate is opened, the brake/tail lights
and the turn signals are switched over from the
main rear lights to the auxiliary rear lights. The
lamps in the main rear lights are then deactivated.
When the tailgate is closed again, the system
switches back to the main rear lights.
The auxiliary rear lights are then deactivated again.
Asymmetric switchover in the event of lamp failure
In the event of failure of a turn signal/brake light or
tail light function, the system switches over asymmetrically to the lamp in the auxiliary rear light,
i.e. only the faulty side is switched over. If this
occurs, a fault message is indicated via the dash
panel insert.
If the system switches over to the auxiliary rear
lights because the main rear lights have failed, no
attempt is made to switch on the main rear lights
again until the next terminal 15 cycle begins.
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Functional sequence for the symmetrical
switchover of rear lights
Components involved:
– Convenience system central control unit J393
– Rear lid closed sender -1- G525
– Rear lid closed sender -2- G526
– Rear lid contact switch F123
– Main rear lights
– Auxiliary rear lights
Main rear lightG525G526F123
Turn signal
Brake light/
tail light
Convenience system central control unit
Brake light/
tail light
433_100
The convenience system central control unit J393
recognises the position of the tailgate from the
positions (open/closed) of G525, G526 and F123.
Unlike with the Audi Q7, the switch position of the
F123 is additionally evaluated on the Audi Q5.
J393
Turn signal
Brake light/tail lightReversing lightRear fog light
Auxiliary rear light
433_105
33
Electrical system
Rear outside lights
Replacing light bulbs
As with the Audi Q7, the light bulbs of the main rear
lights can be replaced after removing the covers.
To make it easier to grip and rotate the light sockets,
a special tool can be found inside the main rear
light covers.
Rear light
Tool
In this case, it is not necessary to remove the rear
light.
The light bulb replacement procedure described
here applies to the basic rear light only.
No provision is made for repair or replacement of
individual LEDs in the LED rear light.
Cover the rear light
in the tailgate
Lamp socket
The auxiliary rear lights must be removed to
replace light bulbs. As with the Audi Q7, the screw
connection is accessible after removing the
cover in the rear bumper.
Cover
Note
For further information on the replacement
of light bulbs, please refer to the current
service literature.
Tool for gripping and
rotating the lamp socket
433_193
433_143433_142
34
Audi drive select
Like the Audi A5 and the Audi A4 ‘08, the Audi Q5 is
optionally available with the innovative Audi drive
select system.
Previously, systems such as the automatic gearbox
or the damping control system, could only be
controlled separately via the "Sport" setting.
The Audi drive select system now allows multiple
systems, the engine, the automatic gearbox, the
damping control system, the Servotronic system,
the dynamic steering system and the sport
differential* to be set at the touch of a button.
In this way, completely individual vehicle's
characteristics can be configured. The behaviour
of these systems is controlled electronically and
can be adjusted to between comfortable and
dynamic.
COMFORTDYNAMIC
Engine
normalnormalSport mode
Audi drive select is also referred to in-house or in
the service literature as "Charisma". The centrepiece
of the system is the Charisma switch module E592,
which is used to read in and communicate the
driver's input to the onboard power supply control
unit J519.
* To be introduced at a later date
Reference
For further information about the
Audi drive select system, please refer
to SSP 409 Audi A4 ‘08.
AUTO
Automatic gearbox
Servotronic
Dynamic steering
Damping control system
Sport differential*
normal
as usual in
selector lever
position "D"
normal
as usual in
selector lever
position "D"
Sport program
easy actionnormalfirm
comfortable
and indirect
comfortable
and soft
sporty
and direct
sporty
and direct
normalsporty
and firm
weakmediumstrong
35
Electrical system
Networking - vehicles with infotainment CAN
Rear-view camera
Air quality sensor
G238
Front right seat
ventilation control
unit J799
system control unit
J772
Refrigerant
pressure/
temperature sender
G395
Garage door
operation
control unit
J530
Light switch
E1
Wiper motor
control unit
J400
Rain and light
detector sensor
G397
Electrical steering
column lock
control unit
J764
Entry and start
authorisation
switch
E415
Garage door
operating unit
E284
Front left seat
ventilation
control unit
J800
Charisma switch
module
E592
Onboard power supply
control unit
J519
Convenience system central
control unit
J393
Alarm horn
H12
Trailer detector
control unit
J345
Steering column
electronics
control unit
J527
Seat and steering
column adjustment
control unit with
memory
J136
Special vehicle
control unit
J608
Driver door
control unit
J386
Front passenger
door control unit
J387
Rear lid
control unit
J605
Multifunction
steering wheel
control unit
J453
Door control unit,
rear left
J388
Door control unit,
rear right
J389
Rear lid
control unit -2-
J756
Sunroof roller blind
Humidity sender
36
Sliding sunroof
control unit
J245
control unit
J394
Anti-theft alarm
system sensor
G578
G355
Climatronic control unit
Fresh air blower
J255
control unit
J126
Flap control
motors
Tyre pressure
monitor control
unit
J502*
* for USA only
Power output
module for left
headlight
J667
Power output
module for right
headlight
J668
Powertrain CAN bus
Convenience CAN bus
Dash panel insert/
suspension CAN bus
CAN Extended
Infotainment CAN bus
Diagnostics CAN bus
LIN bus
Sub-bus systems
ESP sensor unit
G419
ESP sensor unit -2-
G536
Control unit with
display in dash
panel insert
J285
Parallel Park Assist
control unit
J791
ABS control unit
J104
Active steering
control unit
J792
Steering angle
sender
G85
Electric park and
handbrake
control unit
J540
Additional heater
control unit
J364
433_106
Diagnostic port
Engine
control unit
J623
Airbag
control unit
J234
Automatic gearbox
control unit
J217
ECD control unit
(electronically
controlled damping)
J250
Four-wheel drive
control unit
J492
Data bus diagnostic interface
warning system
Headlight Assist
J533
Adaptive cruise
control unit
J428
Lane departure
control unit
J759
control unit
J844
Lane change
assistant
control unit
J769
Battery monitor
control unit
J367
3-phase AC
alternator
C
Radio
R
Digital sound
package
control unit
J525
Telephone
transmitter and
receiver unit
R36
External
radio sources
connection
R199
433_051
Headlight range
control unit
J745
Lane change
assistant
control unit -2-
J770
37
Electrical system
Networking - vehicles with MOST bus
Air quality sensor
G238
Front right seat
ventilation control
unit J799
Rear-view camera
system control unit
J772
Refrigerant
pressure/
temperature sender
G395
Garage door
operation
control unit
J530
Light switch
E1
Wiper motor
control unit
J400
Rain and light
detector sensor
G397
Electrical steering
column lock
control unit
J764
Entry and start
authorisation
switch
E415
Garage door
operating unit
E284
Front left seat
ventilation
control unit
J800
Charisma switch
module
E592
Onboard power supply
control unit
J519
Convenience system central
control unit
J393
Alarm horn
H12
Trailer detector
control unit
J345
Steering column
electronics
control unit
J527
Seat and steering
column adjustment
control unit with
memory
J136
Special vehicle
control unit
J608
Driver door
control unit
J386
Front passenger
door control unit
J387
Rear lid
control unit
J605
Multifunction
steering wheel
control unit
J453
Door control unit,
rear left
J388
Door control unit,
rear right
J389
Rear lid
control unit -2-
J756
Tyre pressure
Sliding sunroof
control unit
J245
Sunroof roller blind
control unit
J394
Anti-theft alarm
system sensor
G578
Humidity sender
G355
38
Climatronic control unit
J255
Fresh air blower
control unit
J126
Flap control
motors
monitor control
unit
J502*
* for USA only
Power output
module for left
headlight
J667
Power output
module for right
headlight
J668
Control unit with
display in dash
panel insert
J285
Steering angle
sender
G85
Powertrain CAN bus
Convenience CAN bus
Dash panel insert/
running gear CAN
CAN Extended
Diagnostics CAN bus
LIN bus
Sub-bus systems
MOST bus
ESP sensor unit
ESP sensor unit -2-
Diagnostic port
Engine
control unit
J623
Airbag
control unit
J234
G419
G536
Parallel Park Assist
control unit
J791
ABS control unit
J104
Active steering
control unit
J792
Four-wheel drive
control unit
J492
Data bus diagnostic interface
J533
Adaptive cruise
control unit
J428
Lane departure
warning system
control unit
J759
Electric park and
handbrake
control unit
J540
Additional heater
control unit
J364
Information
electronics
control unit -1-
Digital sound
control unit
J794
package
J525
MMI display
J685
Mediaplayer
in position 1
R118
Radio
R
TV tuner
R78
Automatic gearbox
control unit
J217
ECD control unit
(electronically
controlled damping)
J250
Headlight range
control unit
J745
Headlight Assist
control unit
J844
Lane change
assistant
control unit
J769
Lane change
assistant
control unit -2-
J770
Battery monitor
control unit
J367
3-phase AC
alternator
C
433_067
39
Electrical system
Installation overview - control units
Adaptive cruise
control unit
Tyre pressure monitor
control unit (USA)
Additional heater control unit
External radio
source connection
Mediaplayer 1
Data bus diagnostic
interface
Automatic gearbox
control unit
Headlight range control,
control unit
Telephone transmitter
and receiver unit
Climatronic
control unit
Lane departure
warning system
control unit
Front passenger
door control unit
Airbag
control unit
Dash panel insert
Convertible top
operation ABS
Powertrain CAN users
Convenience CAN users
Dash panel insert/
running gear CAN users
CAN Extended users
LIN bus users
Sub-Bus users
MOST bus users
Engine control unit
Radio (CAN)
Onboard power
supply control unit
Steering column
electronics control unit
Headlight Assist
control unit
Steering angle
sensor
Driver door
control unit
40
Rear right door control unit
Seat ventilation
control units
Trailer detector
control unit
Convenience system
central control unit
Rear lid
control unit -2(slave)
Electromechanical parking
brake control unit
Rear-view camera control unit
Park assist control unit
ECD control unit
(electronically controlled damping)
Special vehicle control unit
Lane change assistant
control unit (master)
All-wheel drive
control unit
Active steering
control unit
Rear left door control unit
Rear lid
control unit
(master)
TV tuner (MOST)
Radio (MOST)
433_080
Lane change assistant
control unit -2- (slave)
Digital sound package control unit
(not available with Chorus radio)
41
Electrical system
Headlight Assist System
Function
The new Audi Headlight Assist System is available
as optional equipment for the Audi Q5. The system
offers the driver better visibility in the dark since the
main-beam headlights are always switched on,
subject to traffic and ambient conditions.
How the Headlight Assist System works when an oncoming vehicle is detected:
The Headlight Assist System detects build-up areas
and towns by street lighting, whereupon it dims the
headlights to dipped beam. After leaving the builtup area or town, the headlights are automatically
switched back to main beam. The system software
also has the ability to detect thick fog,
When the camera of the Headlight Assist System
detects an oncoming vehicle or traffic ahead, the
headlights are dipped in a timely manner in order
to avoid dazzling other road users. Once detected
vehicles move outside the detection range of the
Headlight Assist System again, the headlights are
automatically switched back to main beam.
433_069433_070433_068
in which case it also dims the headlights to dipped
beam. The Headlight Assist System maximises the
"on" time of the main-beam headlights, and
therefore provides better visibility. The driver has
less workload and can concentrate better on traffic.
How the Headlight Assist System works when passing through a built-up area:
Note
The Headlight Assist System is a driver Assist System, which assists driving in the dark by automatically
switching the main-beam headlights on and off. However, it does not discharge the driver from his duty
to make responsible use of the main-beam headlights while driving. For this reason, the driver can
manually turn the main-beam headlights on and off at any time - even when Headlight Assist is active.
42
433_073433_072433_071
System operation
Activating the Headlight Assist System
To activate the Headlight Assist System, the rotary
light switch must be in the "AUTO" position.
The Headlight Assist System can be activated by
flicking the main-beam stalk forward. The Headlight
Assist System must be reactivated during each
terminal 15 cycle.
flick forward
"stalk not actuated"
position
Deactivating the Headlight Assist System
The Headlight Assist System is permanently
deactivated when the rotary light switch is rotated
out of the "AUTO" position. Flicking the main-beam
stalk forward deactivates the Headlight Assist
System until the main-beam stalk is again flicked
forward.
pull back
Overriding the Headlight Assist System
The driver can override any decision made by the
activated Headlight Assist System (main-beam
headlights ON/OFF) at any time.
Main-beam headlights switched on by the Headlight
Assist System can be switched off by pulling the
main-beam stalk back. This also deactivates the
Headlight Assist System.
If the Headlight Assist System has only switched on
the dipped headlights, the main-beam headlights
can be switched on by flicking the main-beam stalk
forwards. This also deactivates Headlight Assist
System.
433_074
New features of the main-beam stalk
The Audi Q5 has a modified main-beam stalk in the
steering column switch.
The new main-beam stalk no longer engages in its
end position when it is pushed forward, but returns
to its initial position after it is released.
The steering column electronics control unit J527
monitors when the main-beam stalk is flicked
forward and pulled back, and processes the
information accordingly.
43
Electrical system
Warning lamp in the dash panel insert
An activated Headlight Assist System is indicated
in the dash panel insert in the same position as
where the total mileage is displayed when the
Headlight Assist System is deactivated.
If the main-beam headlights are "on", the familiar
blue main-beam headlight warning lamp in the
dash panel insert is lit.This lamp is lit regardless
of whether the main-beam headlights have been
switched on manually or by the Headlight Assist
System.
Switch-on and switch-off conditions of the automatic main-beam headlights
433_075
Switching-on of the main-beam headlights by the Headlight Assist System:
The activated Headlight Assist System switches on the main-beam headlights only if all the following
conditions are met:
– The camera of the Headlight Assist System indicates that ambient luminosity has dropped below a
preconfigured threshold level,
– the dipped headlights have already been switched "on" at the instruction of the rain and light detector
sensor,
– the vehicle is travelling at a speed of greater than 60 kph,
– neither a vehicle ahead nor oncoming traffic has been detected and
– no built-up area has been detected.
Switching-off of the main-beam headlights by the Headlight Assist System:
If the main-beam headlights have been switched on by the Headlight Assist System, they will be switched
off again under the following conditions:
– An oncoming vehicle is detected.
– A vehicle is detected ahead.
– A sufficiently illuminated built-up area is detected.
– The vehicle's speed drops below 30 kph.
– The Headlight Assist System clearly detects fog.
Reference
A separate Self-Study Programme (SSP 434) has been published on the topic of "The Audi Headlight
Assist System". It also describes how the Headlight Assist System functions in road traffic, the
operating logic of the Headlight Assist System when the main-beam stalk is actuated, the system
interface to the vehicle electronics, the communication structure (networking) and the diagnostics.
44
Installation location of the Headlight Assist
System
The electronics and optics of the Headlight Assist
System are wholly integrated in the rear-view
mirror. The camera of the Headlight Assist System
is built into the base of the rear-view mirror, which
itself is securely mounted on the windscreen.
The camera is a special black-and-white camera.
The Headlight Assist control unit J844 is integrated
PCB with the hardware of the
Headlight Assist control unit J844
433_077
Headlight Assist System camera
Sensor of compass in rear-view mirror
45
Infotainment
Infotainment system overview
StandardOptional radios
chorus radioconcert radiosymphony radio
MemoryBand
Update station list
Bayern 3
AerialPop
88.3 MHz
SoundManual
Standard equipment
Car menuCAR menu incl. driver assist
MemoryBand
Update station list
Aerial
B 5 AKTNews
BAYERN 1
BAYERN 2
Bayern 3
12:00
Culture
Pop
SoundManual
Control panel in radio
Phase diversity
TP memory function
MemoryBand
Update station list
Aerial
B 5 AKTNews
BAYERN 1
BAYERN 2
Bayern 3
12:00
Culture
Pop
SoundManual
Single-CD drive in radioSingle-CD drive (MP3/WMA) in radioCD changer (MP3/WMA) in radio
Amplifier in radio
2 x 20 watts for 4 front loudspeakers
Option
SD/MMC memory card reader
AUX IN in centre console (deleted if Audi music interface AMI is installed)
4 x 20 watts with 8 loudspeakers, front and rear
VDA interface for Aftersales mobile phone retrofit
(available in Germany to key accounts only)
Amplifier in radio
Provision for connecting mobile phone to infotainment CAN bus
DAB tuner integrated in radio R
10 loudspeakers driven through a six-channel amplifier connected to infotainment CAN
14 loudspeakers driven through a six-channel amplifier connected to infotainment CAN
Audi sound system
Bang & Olufsen sound system
Audi music interface connected to infotainment CAN
Digital satellite radio
(SDARS for North America only)
46
Radio navigation systems
MMI Navigation plus
All Audi Q5 models are equipped as standard with
the chorus radio with basic sound system. The
concert and symphony radio systems are optionally
available together with other equipment. The
chorus, concert and symphony radio systems are
already featured in the Audi A5.
The MMI Navigation plus system - a 3rd generation
MMI system - is optional on the Audi Q5.
Highlights for the user include the jukebox function,
the speech control system with whole-word input
and a 3D map display for navigation.
The greatest innovation of the MMI Navigation plus
system is the fact that it combines previously
independent control units into a single unit - the
infotainment electronics control unit -1- J794.
MMI control panel in the centre console
CAR menu incl. driver assist
Phase diversity
TP memory function
Dual tuner
2 SD/MMC memory card readers
Single DVD drive integrated in J794
Hard drive (for navigation data and music files) integrated in J794
AUX IN in centre console (deleted if AMI is installed)
4 x 20 watts for 8 loudspeakers, front and rear
Speech control for navigation and telephone
Mobile phone preparation integrated in J794
VDA interface for Aftersales mobile phone retrofit
(available in Germany to key accounts only)
TV tuner, hybrid or analogue (depending on market)
Bluetooth car phone integrated in J794
Digital satellite radio (SDARS for North America only)
10 loudspeakers driven through a six-channel amplifier integrated in radio R
14 loudspeakers with a 10-channel amplifier connected to the MOST data bus
Audi music interface integrated in J794
Amplifier in radio R
Bluetooth handset
DAB dual tuner (dynamic station list)
integrated in radio R
integrated in radio R
Audi sound system
Bang & Olufsen sound system
The Audi Sound System and the Bang & Olufsen
Sound System are optional.
Reference
For further information about the design
and function of the radios, please refer
to SSP 392 - Audi A5 and SSP 435 MMI
Navigation plus.
47
Infotainment
Overview - sound systems
Depending on system, up to 14 loudspeakers can be installed.
The associated amplifier can be either an independent control unit
or integrated in the radio.
R22 Treble loudspeaker,
front right
R104 Mid-range loudspeaker,
front right (with B&O)
R74 Internal microphone
R22 Treble loudspeaker,
front right (with B&O only)
R102 Mid-range/bass
loudspeaker, front right
R23 Bass loudspeaker,
front right (with B&O)
R158 Mid-range/treble loudspeaker,
centre (centre loudspeaker)
(not available with
basic sound system)
R20 Treble loudspeaker,
front left
R103 Mid-range loudspeaker,
front left (with B&O)
R22 Treble loudspeaker,
front left (with B&O only)
R101 Mid-range/bass loudspeaker,
front left
R21 Bass loudspeaker,
front left (with B&O)
R14 Treble loudspeaker,
rear left
R159 Mid-range/bass loudspeaker,
rear left
48
R16 Treble loudspeaker,
rear right
R160 Mid-range/bass loudspeaker,
rear right
R106 Mid-range loudspeaker,
rear right (surround)
(with B&O only)
J525 Digital sound package control unit
(only available with B&O and
infotainment CAN with Audi Sound System)
R105 Mid-range loudspeaker,
rear left (surround)
(with B&O only)
R157 Subwoofer
(not available with
basic sound system)
433_050
49
Infotainment
Sound systems
Overview
Basic sound systemAudi Sound SystemBang & Olufsen
chorus radio Amplifier
concert and
symphony radios
integrated in radio R
2 x 20 watts for
4 front loudspeakers
also available depending
on country:
40 x 20 watts for
4 x 2 loudspeakers,
front and rear
4 x 20-watts amplifier
integrated in radio
4 x 2 loudspeakers,
front and rear
––
180 watts six-channel amplifier
in luggage compartment,
rear left
4 x 2 loudspeakers,
front and rear
1 centre loudspeaker
in the dash panel
1 subwoofer in the
spare-wheel recess
Data transfer via infotainment CAN,
audio signal transfer via twisted-pair cable
Sound System
505 watts 10-channel amplifier
in the luggage compartment,
2 x 3 front loudspeakers and
rear left
2 x 2 rear loudspeakers
1 centre loudspeaker
in the dash panel and
2 surround loudspeakers
in the D posts
1 subwoofer in the
spare-wheel recess
MMI 4 x 20 watts amplifier
integrated in radio
4 x 2 loudspeakers,
front and rear
180 watts six-channel amplifier
integrated in radio R
4 x 2 loudspeakers,
front and rear
1 centre loudspeaker
in the dash panel
1 subwoofer in the
spare-wheel recess
505 watts 10-channel amplifier
in the luggage compartment,
rear left
2 x 3 front loudspeakers
2 x 2 rear loudspeakers
1 centre loudspeaker
in the dash panel and
2 surround loudspeakers
in the D posts
1 subwoofer in the
spare-wheel recess
Data and audio signal
transfer via optical
MOST bus
50
Aerial diagnostics
All radio aerials in the Audi Q5 have full self-diagnostic capability. Now open circuits in the aerial system can
not only be detected between the tuner and the amplifier. In fact, the new method enables the aerial system
to be tested through the amplifier up to the aerial. This has the advantage that a fault is stored in the fault
memory if, for example, the connection to the rear window is broken.
This means that there is no need for a laborious analysis of reception strength in order to trace a customer
complaint.
Schematic diagram
Aerial (AM/FM1)
Radio
R11
Open circuit
FM2
Aerial amplifier
R112
FM1/AM
If the above mentioned fault has occurred, the following fault memory entry is made:
Connection between impedance converter and window aerial: open circuit
R
433_099
51
Infotainment
Aerial system
The aerials on the Audi Q5 are distributed among the rear window, the rear spoiler, the rear left side window
and the roof aerial.
The amplifiers for the aerials in the rear window and in the roof spoiler are installed on the tailgate.
Aerials
Spoiler
Rear window
SDARS
Navigation
R112
R216
Telephone
R216
433_097b
Telephone
Navigation
TV
433_097c
AM/FM1
R178R179
Central lockingFM2TV2TV3
52
G304R24R113
433_097a
The DAB amplifier (left aerial module R108) is located on the D post on the left.
The mobile telephone amplifier R86 is installed behind the right luggage compartment trim in the side panel.
R108
DAB
Legend
G304Glass breakage sensor, rear window
R24Aerial amplifier
R216 Roof aerial
R108 Left aerial module
R112 Aerial amplifier 3
R113 Aerial amplifier 4
R178 Frequency filter for frequency modulation (FM) in the negative lead
R179 Frequency filter for frequency modulation (FM) in the positive lead
433_097d
53
Air conditioning
Air conditioning system
The Audi Q5 is equipped as standard with an automatic air conditioning system with ram pressure
control, manual air recycle mode, sun position
dependent control and key identification.
A three-zone deluxe automatic air conditioning
system is optional.
Refrigerant system Q5
Liquid tank with
drier canister
This system allows the temperature to be set
separately for the driver, front passenger and rear
zones. It also provides the following additional
comfort functions for the customer:
– Indirect ventilation
– Automatic air recirculation control
– Moisture sensors
Air intake box
Air conditioner
Condenser
Refrigerant pressure
and temperature
sender G395
The Audi Q5 uses an adapted version of the refrigerant system in the Audi A4/A5.
The internal heat exchanger, which is designed as
a coaxial low and high pressure line, increases the
efficiency of the thermodynamic circulation
process, i.e. the air conditioning system. The lines
can be disconnected at the quick release couplings
using release tool T40149.
Evaporator
Expansion valve
Refrigerant line with
internal heat exchanger
Service connections
Quick release couplings
Compressor
By using a thermally controlled expansion valve, it is
possible to install a smaller compressor with equal
refrigeration capacity.
Like the system in the Audi A4/A5, the air condi-
tioner is divided into two modules: the air intake box
and the air conditioner with air distributor housing.
433_084
54
Electrical connection of the automatic air
conditioning system
The electronic components are networked using the
same configuration as in the Audi A4 ‘08 and A5
models. Data from various senders and sensors is
read in locally by the onboard power supply control
unit J519 or by the convenience system central control unit J393, and made available to the Climatronic
control unit J255 via the convenience CAN data bus.
Ambient
temperature
sensor
G17
Onboard power supply
Air conditioning
system compressor
regulating valve
control unit
J519
N280
Convenience CAN
Convertible top operation
control unit
J255
The servomotors of the individual flap drives are
identical in design, and therefore can be fitted
to any flap. They are connected in series and
controlled by way of a separate LIN bus.
The servomotors for the individual flaps are
addressed in the basic setting mode of the VAS
diagnostic tester.
Seat and steering
column adjustment
control unit with
memory
J136*
bus
Convenience system
central control unit
J393
LIN busLIN busLIN bus
Data bus
diagnostic
interface
J533
Diagnostic
port
Additional heater
control unit
J364
Dash panel insert/
running gear CAN
2
Refrigerant
pressure/
temperature sender
G395
Front left seat
ventilation control
unit
J800*
Air quality
sensor
G238
Front right seat
ventilation control
unit
J799*
1
Fresh air blower
control unit
J126
* varies depending on vehicle specification
only available in combination with the three-zone deluxe
1
automatic air conditioning system
2
Optional equipment
3
The number and layout of the servomotors between the deluxe
automatic air conditioning system and the three-zone deluxe
automatic air conditioning system varies
Visualisation of air conditioning settings
As with the Audi A4 ‘08 and A5, the Climatronic
control unit J255 does not have a Set-up button.
The automatic air conditioning system set-up
function is integrated in the radio or MMI system.
After pressing the "CAR" function button and
subsequently the "A/C" control button, the Set-up
functions are available.
Adjustments to air conditioning settings - e.g.
blower level, air distribution or temperature - are
displayed to the customer as a pop-up window.
The originally selected screen remains open in the
background and the adjusted air conditioning
setting is displayed in the fore-ground at the side of
the screen. Display duration can be adjusted using
the diagnostic tester.
Sliding sunroof
Flap control
motors
Humidity sender
32
G355
1
control unit
J245
433_054
Visualisation of air conditioning settings by means
of pop-up windows will also be implemented on
the Audi A4 and A5 from model year 2009 onwards.
433_079
55
Air conditioning
Heated cupholder Z105
The cupholder Z105 is heatable and coolable.
It is installed in the centre console between the MMI
control panel and the armrest.
The Peltier effect is used to control the temperature
of the cupholder. Peltier elements consist of a
multiple identical, square-shaped p-n type semiconductor junctions connected in series.
This plate-shaped Peltier configuration is sandwiched on both sides, electrically and mechanically,
by ceramic plates. When a direct current is applied,
one side of the plate heats up while the other side
cools down. The heating and cooling sides are
inverted by reversing the direction of the electrical
current.
"Cooling" button
with blue function LED
Cupholder Z105
The direction of the electrical current can be
reversed by using two buttons, which are posi-
tioned directly in front of the heated cupholder
Z105.
For better cooling, the heat on the heated side of
the Peltier element is dissipated by means of a fan.
For this purpose, air is induced on the driver's side
of the centre console, passed through the cooling
element of the cupholder Z105 and vented on the
front passenger side.
The heatable and coolable cupholder Z105 has a
maximum current draw of 3.5 A with a rated power
output of approx. 40 W.
"Heating" button
with red function LED
Residual heat
indicator lamp
Direction
of travel
Standard cupholder, right
56
433_092
Cooling air outlet
Sectional view of heated cupholder Z105
left-hand side
Heated cupholder Z105
Insulation
right-hand side
Standard cupholder
Cupholder housing
Air outletAir intake
433_082
Aluminium liner
Cooling element
Integration in the vehicle electrical system
Heating buttonCooling button
Legend
J393 Convenience system
central control unit
J519 Onboard power supply
control unit
Z105 Heatable
cupholder
J807 Power socket relay
Button signal
Function LED
FanPeltier element
Blue function LEDRed function LED
Function LED
Button signal
to 12 volt
sockets
The heatable cupholder Z105 and the accompanying
buttons are discretely wired. They are activated via
the power socket relay J807.
to other
control units
Note
In case of repair, the heatable
cupholder Z105 can only be
replaced as a complete unit.
433_094
57
Air conditioning
Pre-heater
The pre-heater in the Audi Q5 serves primarily to
heat the vehicle interior of the vehicle and defrost
the windows. For this purpose, vehicles are
equipped with a pre-heater and a heater coolant
shut-off valve N279.
In pre-heating mode, the valve creates a small water
circuit in which water circulates between only the
pre-heater and the heat exchanger in the vehicle
interior.
Assembly
Heater
A revised solenoid valve with only 3 terminals is used
on the Audi Q5.
The additional heater control unit J364 activates the
heater coolant shut-off valve N279 until the coolant
in the pre-heater reaches the preset temperature or
until the engine is running at a speed of greater than
1200 rpm.
When deenergised, the heater coolant shut-off valve
N279 is open and coolant flows through the large
circuit.
Fuel extraction point
for pre-heater
Recirculation
pump V55
Exhaust pipe
Heater coolant shut-off valve N279
The pre-heater is optional with both petrol and
diesel vehicles. All diesel Audi Q5 models are
currently supplied with an electric supplementary
Metering pump V54
air heater Z35, even if these vehicles are ordered
with a pre-heater. At present the pre-heater is not
used as a supplementary heater on the Audi Q5.
58
Heater coolant shut-off valve N279
A modified heater coolant shut-off valve N279 is used on the Audi Q5. The new shut-off valve N279 has only
3 outlets. When servicing is necessary, the same procedure applies to both shut-off valves.
433_089
Audi A4/A5
Audi Q5
to engine
from heat
exchanger
433_090
to pre-heater
Note
The pre-heater can be operated as an auxiliary fan.
The selected temperature setting on the Climatronic
control unit J255 and the actual temperature inside
the vehicle decide whether the pre-heater or the
auxiliary fan is operated.
Exploded view drawing of the pre-heater
The Eberspächer system operates according to the evaporator principle.
433_085
2
1
01 Combustion blower V6
02 Engine
03 Fuel line
04 Heater glow plug Q9
05 Additional heater control unit J364
06 Temperature sensor -2- G587
07 Temperature sensor G18
4
08 Heat exchanger
09 Water jacket
10 Combustion chamber
11 Burner element
Combustion air inletExhaust outlet
3
5
6
7
8
9
1011
433_096
59
Service
The Advanced Maintenance Concept
The Advanced Maintenance Concept differentiates
between three independent service events.
A distinction is made between a flexible service
event, a mileage dependent service event and a
time dependent service event.
Previously, mileage and time dependent service
events were linked to the oil change, whose interval
is flexible.
Under the Advanced Maintenance Concept, the
customer is not only reminded of the flexible
service event - the oil change - by the Service
Interval Display but also of upcoming mileage and
time dependent service events.
As usual, this is indicated to the customer via the
dash panel insert.
Service interval
Additional information can be obtained via the "Car"
menu in the MMI or via the radio display.
The Advanced Maintenance Concept is used on the
following models:
– A3 from model year 2008 onwards
– TT from model year 2008 onwards
– A4 from model year 2008 onwards
– A5
– Q5
– A6 from week 46/08 onwards
– Q7 from week 46/08 onwards
– R8 from model year 2009 onwards
Flexible service event (oil change)
Vehicle wallet
Next oil change
in 24100 km / 503 days
Next inspection
in 26900 km / 868 days
12:00
Mileage dependent service events
Since mileage and time dependent service events are now also indicated, process reliability is higher.
The prerequisite for this is that the Service Interval Display is reset correctly.
Only two lines are provided on the display for the three independent service events.
Time dependent service events
Air conditioning
433_088
Reference
For further information about the Advanced
Maintenance Concept, please refer to
SSP 438 Audi - The Advanced Maintenance Concept.
Brake fluidfirst change after 3 years (depending on market), thereafter every 2 years
(in accordance with the regular main inspection and emission test cycles)
Audi Q5
3.2l FSI
199 kW
Audi Q5
2.0l TDI
125 kW
Audi Q5
3.0l TDI
176 kW
Note
As a rule, the information given in
the current service literature applies.
Brake fluid
As the Maintenance Chart indicates, the brake fluid
change interval has been extended. The first brake
fluid change is now due after three years, and
thereafter every two years in conjunction with the
main inspection and exhaust emission test.
In some markets, the extended oil change intervals
already apply to all Audi models from model year ‘07
onwards, i.e. in conjunction with the market launch
of the TT and Q7.
The combined main inspection/emission test interval applies only to Germany.
Oil change
The oil change now involves less work because,
unlike previously, the oil can be extracted from all
engine types.
It is, therefore, not necessary to remove the soundproofing. The soundproofing now only needs to be
removed every 60,000 km in order to check the drive
shafts, for example.
Adherence to maintenance intervals
The current maintenance intervals are based on
extensive series of tests and are designed to fully
utilise the lubricity of the engine oil over the
specified cycle.
The defined oil tolerance limits will be exceeded if
the maintenance intervals are not adhered to.
Over-ageing of the engine oil - caused by residues
from the combustion process in the engine - can
impair lubricity. This can lead to increased wear of
engine parts dependent on lubrication (cylinder
liners, piston rings, camshafts, tappets, chain drives
etc.).
The Mobility Guarantee does not cover engine
damage caused in this way.
The Mobility Guarantee cannot be claimed if, for
example, the specified maintenance intervals are
exceeded.
61
Service
Service Key
Since the introduction of the new key concept
(Audi A5, A4 ‘08, and the Audi Q5), the ignition key
supports a new function - the Service Key.
A rewritable memory chip is integrated in the key
and, current vehicle information is written to this
chip at certain intervals.
This information can be read out using a special
reader, which is connected to the workshop
computer via the USB port. The exported data can
be displayed on the screen and transferred to the
various service systems by means of software. The
Service Key therefore helps the service consultant
to comply with Service Core Processes, since it
eliminates the laborious manual entry of data.
In the first phase of implementation, data can only
be written to the key in the vehicle. Data is written
to the key once a day at the start of the first trip.
Data is also saved to the transponder at a difference
of 20 km to the last recorded mileage and when a
new warning message is indicated.
A speed threshold of 20 kph and a time threshold of
40 seconds, which must be exceeded, applies to all
three storage conditions.
When using the Service Key, the vehicle data from
the last key to be read out remains available until a
new key is read out or the Service Key program is
restarted.
For this reason, please always make sure that you
have read out the correct key before using the
Service Key functions in the service systems as
otherwise you may not be using the correct vehicle
data.
Stored information
The following vehicle information is stored in the Service Key:
– date and time of last update
– vehicle mileage at time of last update
– current information on the service interval
– the transponder ID
Reference
For further information on the Service Key, please refer to
SSP 393 - Audi A5 – Convenience Electronics and Driver Assist
Systems.
62
433_086
Order acceptance
The service consultant reads the vehicle data out of the Service Key at the dealership and transfers it to the
ELSA electronic service information system.
The service consultant recommends necessary service work to the customer based on this data. After the
consultation the customer decides what service work he/she wants done. The Maintenance Chart in ELSA
provides the basis for this. The ELSA forecast indicates which service work is due next. Bringing forward
service events is only recommended if the next service event is due in less than 5,000 km.
Maintenance checklist
Order numberModelLicense plateDate of initial registration
90000168578K20QC2007-06
VINEngine codeMileage (km)Service consultant
27235CAGAWAUZZZ8K78A000636
Model designationGearbox codeModel yearDate
A4 saloon TDI2.0 R4105JJG20082008-6-30
LongLife Service (with oil change)
Electrical system
Check the lighting via the driver information system, and also check the signal horn
and license plate light.
LongLife Service (with oil change): Reset
Mileage dependent Audi inspection: ALL due additional work
is performed. Yes/No Due at mileage60000
Time dependent Audi inspection: Enter actual date / due-on date.
Dust-pollen filter/odour-emissions filter: Replace
The Maintenance Chart is printed by the service consultant and the represents the work order for the
mechanic. The item "Reset service display" will be deleted when the Advanced Maintenance Concept is
incorporated into the Maintenance Chart.Up to three lines, which must be filled in by the service consultant,
are now displayed for this purpose. This space is used for specifying which data must be entered into the
adaptation channels of the Service Interval Display by the mechanic.
The three lines of text correspond to the texts which are displayed to the mechanic in "Guided Fault Finding"
mode or in "Guided Functions" mode.
OK/
done
NOKrectified
433_195
63
Service
Resetting the Service Interval Display
The Service Interval Display can be reset in the
"Guided Fault Finding" mode or "Guided Functions"
mode of the diagnostic tester.
The mechanic is guided through the program by the
diagnostic tester. The data which must be entered
into the Maintenance Chart by the service
consultant is essential.
Guided Functions
Functions
Select vehicle system or function
Service work
A - Battery, test (Rep. Gr. 27)
OE - R89/J401 Disable/enable eject button (Rep. Gr. 91)
17 - Inspection Service every 30,000 km
17 - LongLife Service (with oil change)
17 - Oil Change Service
17 - Handover Service
17 - Flexible Oil Change Service (Long Life)
17 - LongLife Service every 30,000 km (without oil change)
17 - Activate/deactivate Transport Mode (Rep, Gr. 90)
37 - Disable/enable eject button (Rep. Gr. 91)
37 - Navigation, disable/enable eject button
The information as to which service work is to be
performed, e.g. the LongLife Service (with oil
change) or the inspection Service every 30,000 km
etc., is displayed as a heading in the relevant
Maintenance Chart on page 1, directly below the
vehicle data.
A further requirement for correctly setting the
Service Interval Display is that the correct date is
indicated on the diagnostic tester's user interface.
AUDI
Audi Q5
2009 (9)
CAGA 2.0 TDI/105 kW
Operating modeSkip
433_087
Date and time display
Note
A distinction is now made between the following
types of service work:
– LongLife Service (with oil change)
– Flexible Oil Change Service (LongLife)
– LongLife Service every 30,000 km
(without oil change)
– Inspection every 30,000 km
– Oil Change Service
64
Service Plan
The Service Plan has been redesigned and adapted
to meet current requirements. It basically serves
only as a record of work done.
The Maintenance Chart in ELSA should be used as a
guide to determine which work is needed, whether
service events should be combined and how the
Service Interval Display should be set.
Audi LongLife Service
Oil change
Inspection
Audi Inspection Service
Oil change
Inspection
The "Audi Inspection Service" boxes should only
be filled in when the vehicle is configured for or
converted to fixed maintenance intervals.
Service recordsService records
Audi LongLife Service
Oil change
Inspection
Audi Inspection Service
Oil change
Inspection
Additional work
Brake fluidAir filter
Spark plugsFuel filter
Dust and pollen filterHaldex: Oil
Multitronic: OilS tronic: Oil and filter
Timing belt
MileageInvoice number
Mobility Guarantee until:
Service display
max. km …………
Date and stamp of Audi dealership
Additional work
Brake fluidAir filter
Spark plugsFuel filter
Dust and pollen filterHaldex: Oil
Multitronic: OilS tronic: Oil and filter
Timing belt
MileageInvoice number
Mobility Guarantee until:
Service display
max. km …………
Date and stamp of Audi dealership
65
Service
New workshop equipment for body repairs
VAS 6525
433_179
VAS 6545VAS 6239A
433_181
VAS 6535
433_180
433_182
VAS 6530Straightening bracket sets:
66
433_183
Basic set: VAS 6442 (Audi A4/A5)
Extension set: VAS 6442/1 (Audi Q5)
Straightening bracket for side gantry gauge:
VAS 5007/41 (Audi Q5)
433_174
Self-Study Programmes about the Audi Q5
The following Self-Study Programmes relevant to SSP 433 Audi Q5 have been prepared:
– SSP 434 The Audi Headlight Assist System
– SSP 429 Audi Q5 Engines and Transmissions
– SSP 438 Audi - The Advanced Maintenance Concept
SSP 434 The Audi Headlight Assist System
– Mode of operation of the Headlight Assist System
– The operating logic of the Headlight Assist System
– Displays in the dash panel insert
– Components of the Headlight Assist System