Volkswagen Vento (2011) Self Study Program

Service Training

Self-study Programme 474

The Vento 2011 (India)

This self-study programme provides you with an overview of the design and function of the new Vento, which is
destined mainly for the Asian market.

Self-study programmes support you in your daily work routine. They help you to understand technical correlations
better. Armed with this knowledge, you will be able to provide customers and colleagues with clear information.

In some of the chapters, you will find references to self-study programmes that deal in greater detail with with
design of individual vehicle components. These and other references are highlighted with a red exclamation mark.

Useful information about individual assembly groups can also be found in previous self-study programmes:
no. 447 "The Polo 2011", no. 190 "Adjustable turbocharger", no. 237 "Manual gearbox 02T", no. 238 "Data
exchange on the CAN bus I", no. 260 "The 1.2 ltr. 3-cylinder engines", no. 269 "Data exchange on the CAN
databus II", no. 296 "The 1.4 ltr. and 1.6 ltr. FSI engine with timing chain", no. 309 "6-speed automatic gearbox
09G/09K/09M" and no. 442 "The 1.6 ltr. TDI engine with common rail injection system".

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The self-study programme portrays the
design and function of new
developments.
The contents will not be updated.

For current testing, adjustment and repair
instructions, refer to the relevant service literature.

Attention

Note

2

Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Body . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Occupant safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Power transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Running gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Electrical system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Convenience electronics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Heating and air conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

3

Introduction

The Vento 2011

The new Vento is based on the Polo 2011 and is built at the Volkswagen Pune factory in India. The Pune factory is
one of Volkswagen Group's most modern production lines in the world.

Pune, India

The whole production programme comprises
complete manufacture from forming the panels to
constructing the body and final assembly.
The maximum annual capacity is designed to
accommodate up to 110,000 vehicles. Currently,
approx. 2,000 people are employed in Pune and they
also produce the Skoda Fabia among other things.
Since April 2009, the Polo is built here and since
August 2010 the new Vento is built here for the Indian
market.

Maharastra

Mumbai

Pune

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4

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Among the biggest single investments were the
construction of a new paintshop, a new bodyshop
and a new assembly line for the Polo and the Vento.
A fully fledged automobile factory took shape with its
own logistics, quality assurance, Volkswagen
Academy and all of the associated areas.

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5

Introduction

The Vento 2011

The Vento is the benchmark in the compact segment of the Indian car market. It is offered exclusively as a 4-door
version for model year 2011 and is based on the Polo 2011. The product properties of this new Volkswagen model
are as follows:

● Halogen H4 headlights with chrome-

plated bezel

● Dash panel insert

with 7" display

● Electro-mechanical power steering

(C-EPS)

● Braking system with ABS Bosch 8.2

(Highline equipment)

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e

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t

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● Crash-optimised pedals and

crash-optimised steering column

6

● Galvanised body elements

(6 year guarantee against rust perforation)

● 6-speed automatic gearbox 09G

(optional)

● Rear axle with

torsion beam design

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● Manual air conditioning as standard,

Climatronic (optional) at Highline equipment level

● Rear lid opening via remote release inside vehicle (switch in driver's door)

and mechanical release outside vehicle via lock cylinder

● Front disc brakes

7

Introduction

Technical data

Exterior dimensions and weights

The diagram shows the exterior dimensions of the new Vento.

Exterior dimensions

Ven to

1460mm

1699mm

2552mm

4384mm

Ven to

1465mm

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1498mm

Weights and other data

Length 4384mm
Width 1699 mm
Height 1465mm
Wheelbase 2552mm
Front track width 1460mm
Rear track width 1498mm

8

Max. perm.
weight

Curb weight 1159kg/

Tank capacity 55litre
Drag coefficient 0,319c

1660kg/
1700kg (automatic)

1217kg (automatic)

w

Interior dimensions

The diagram shows the interior dimensions, the seating positions and the boot of the new Vento.

1744mm

m

m

5

7

9

m

m

1

4

9

454 litres

Interior dimensions and volumes

Interior length 1744mm
Front headroom 975mm
Rear headroom 941mm
Boot volume 454 litre

The equipment lines

Equipment features* Trendline Highline

Manual air conditioning x
Radio preparation inc. 4 loudspeakers x
Electric window regulators at front and rear xx
Height adjustable driver's seat xx
Central locking, remote release of boot xx
Power steering (C-EPS) xx
Anti-lock braking system (ABS) x
Driver and front passenger airbag x
"India Top Power" radio x
Radio remote control x
Electric window regulators with rollback function x
Climatronic x
Anti-theft alarm system with interior monitoring x
Park distance control x

(*Excerpt)

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9

Body

The body structure

Up to the B-pillar, the new Vento is largely identical to the Polo 2011. All of the components have been designed
with function and load in mind in order to achieve an optimum level of strength and rigidity in the body.

Strength of steel panels

up to 140MPa

140-300MPa

300-1000MPa

over 1000MPa (thermally reshaped)

No roof load is permissible due to the roof
structure of the Vento.

Panel qualities

The body is galvanised in all corrosion-relevant areas
and comprises, for the main part, high tensile and
highest tensile steel panels. This means, for example,
that the front and rear side members, the B-pillars
and the floorpan plates on the front left and right are
made of this high tensile sheet metal.

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Thermally reshaped panels

Thermally reshaped steel panels are used for the B­pillar and in the body area bordering the A-pillar.
The strength of these components is achieved before
and after the thermal reshaping process by targeted
heat treatment in the manufacturing tool. Thermally
reshaped steel panels offer a higher tensile strength
at a lower weight than normal steel panels.

10

Joining process

In addition to classic resistance spot welding, the following joining processes are employed on the bodyshell of the
Ven to :

● Spot welding

● Adhesive bonding

● MIG brazing

● Laser brazing

Laser brazing

Side panel

Laser brazed seam

Roof

The Pune factory is a keen proponent of laser brazing
technology for the production of bodyshells for the
new Vento. In the roof and side panel area and also
in the rear lid area, the body components are joined
by a laser brazed bond.

Laser brazing technology increases the quality of
manufacturing and the body by reducing the
welding surface, thereby reducing inherent panel
deformation.
This improves body stability considerably.

Adhesive bonding

Inner skin

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Outer skin

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Adhesive bonding

A new bonding process is employed on the bonnet
and rear lid of the Vento. The panels (outer skin and
inner skin) are joined using an adhesive bond.
Advantages:

● Consistent appearance

● Low cost procedure

11

Body

Bumpers

The bumpers of the Vento are completely colour coded to the vehicle. They are airflow-optimised body elements in
an area of the vehicle close to the ground. Thanks to this, air flows along the underside with little swirl, dispensing
with the need for a PVC underbody shell. In this way, the weight of the vehicle was further reduced.

Together with the airflow-optimised body upper structure, the Vento thereby has a coefficient drag factor (cd value)
of just 0.319, which can be considered good for its class.

Front

The front bumper is made up of the following
components:

● Bumper cover

● Towing eye cap

● Blanking plate (fog lamps)

● Radiator grille

● Vent grille

● Bumper carrier (inner)

Rear

The rear bumper comprises the following
components:

Bumper cover

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Vent grille Blanking plate

(fog lamp)

Bumper cover

12

● Bumper cover (one-piece)

● Lower spoiler, integrated in bumper cover

● Bumper carrier (inner) moulded foam design

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Integrated spoiler

Moulded foam

(inner)

Crash safety

The following deals with design measures pertaining to crash safety. These measures affect, among other things:

● the steering

● the pedals

● the side impact protection

Steering

The steering column has a telescopic rod design in the bottom section. This area represents the collapsible part
shown in the diagram. In the event of a severe frontal collision, the steering column collapses and does not
penetrate further into the passenger compartment.

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Collapsible part of steering column

13

Body

Foot pedal cluster

In severe frontal collisions with major deformation of
the vehicle structure, the brake pedal is pivoted out of
the foot area by a bending strut.

This function is determined by deformation of the
bulkhead. The actuation position of the brake pedal is
irrelevant.

In a front collision, the foot pedal cluster is pushed
towards the central pipe. This results in deflection of
the bending strut, which in turn causes the piston rod
to bend.

Central pipe

Bending strut

The pedal foot plate is pushed away up to max.
170mm. The bending of the piston rod and
consequent altering of the shape means that the risk
of feet becoming trapped by the pedal in an accident
is reduced.

Piston rod

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14

Side impact protection

The side impact protection carriers are made of high tensile steel and are fitted diagonally in the doors.
These bend upwards or downwards in the event of frontal or rear-end collision and do not intrude into the A,
B and C-pillar. This eases access for rescue and recovery teams as the doors are not blocked by the side impact
protection.

The diagonal layout of the side impact protection increases the coverage. This means that in the event of an
accident with side impact, the side impact protection is hit even at different crash heights. This absorbs the energy
of the impact and transmits it to the side of the body.

Rear doorFront door

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Door frame

Side impact protection

cross member

Door frame

Side impact protection

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cross member

15

Body

The headlight modules

A H4 headlight is fitted as standard. This headlight is distinguished by good exploitation of the light source and a
sturdy design. The headlight modules feature a turn signal, side light, dipped beam and main beam. An additional
turn signal (or side repeater) is located in the wing on each side.

Turn signa l (21 W)

Side light (5W)

For the Vento, the headlight modules are installed with chrome-plated bezels. The headlight design features

clear-lens technology. The bulbs are connected to the reflector via a metal bar attachment.

The fog lights

The Vento can be equipped as an option with front
fog lights. These are located on the left and right in
the bumper cover.

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Dipped beam (55W)
Main beam (60W)

16

Front fog light (51W)

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The tail lights with shutter

Left tail light Right tail light

Turn signa l
(21W)

Reversing light (21W)

The tail lights have a one-piece design.
The light incorporates:

● Tail light

● Brake light

● Turn sig nal

● Rear fog light (right)

● Reversing light (left)

● Reflector

Brake light (21W)Tail light (5W)

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Brake light (21W) Tail light (5W)

Rear fog lamp (21W)

Turn s i gnal
(21W)

Replacing bulbs

To access the bulbs, the light must be removed. This is
done by removing a central screw behind the luggage
compartment trim and subsequently disconnecting the
bulb carrier.

17

Body

The anti-theft protection

The following deals with design measures pertaining to anti-theft protection.
Among these measures are:

1 - Cover for bonnet catch
2 - 4th generation electronic immobilizer
3 - Slip coupling on steering column
4 - Lock cylinder freewheel for steering column

lock

4

1

2

3

5 - Anti-theft alarm system with interior monitoring
6 - Lock cylinder freewheel for exterior door

handles

7 - Encapsulated interior door locks with inner

profile key

5

6

7

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The door lock

The door lock is encapsulated and behind the door
handle is a metal plate. These measures prevent
penetration and levering up of the door handle in this
area.

Door handle

Metal plate

Lock

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The front cover

A cover for the bonnet catch inhibits unauthorised
access to the engine compartment.

Cover

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18

The interior equipment

Stowage compartments

There are many multifunctional stowage compartments inside the Vento:

Glove compartment

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Side compartment

with bottle holder

Compartment

in centre armrest

Folding

padding

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Glasses trayCompartment for coins

and card-holder

Compartment

with ashtray

Front and in doors

Located in the centre console are two compartments
as standard with round openings for cans/bottles. On
the smoker's version, there is also a removable round
ashtray included. In the lid of the glove compartment
are separate compartments for sunglasses, coins and
a cardholder. Moulded into the door trim panels are
stowage compartments and bottle holders with 1 L
capacity in- the front and 0.5 L in the rear.

Pen holder

Drinks holder
for rear area

In the centre armrest

The Vento features a centre armrest for the driver as­standard. In the centre armrest, beneath the hinged
padded top, there is an additional stowage
compartment. Under this rest are compartments for
pens/pencils. On the rear of the rest there is a drinks
holder for the rear area. This drinks holder can be
folded out from top to bottom.

19

Body

Luggage compartment

The volume of the boot space is 454 litres. Under the floor covering of the boot space is the spare wheel well. In the
spare wheel well is a removable box, vehicle tools, warning triangle, first aid box, replacement bulbs and a normal
spare wheel.

Lock cylinder

Boot floor cover

Spare wheel

Luggage compartment

Spare wheel

Removable box

(bottom part of boot floor)

The seating concept

Rear seats

The rear seats of the Vento form one complete and fixed system that cannot be folded. The head restraints on the
left and right are height adjustable. A centre armrest is available as an option on the Trendline equipment version
and is standard on the Highline version.

Head restraints

Vehicle tools

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20

Folding armrest

(optional)

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Front seats

The front seats are padded and formed to match the
body contour. The height adjustment is optional on the
Trendline version and included for the driver seat on
the Highline version. The tilt angle of the backrest is
adjusted via a lever (detent). On the Highline version,
the front seats also have a storage pocket on the rear.

Lever for backrest tilt adjustment

Lever for seat height adjustment

(optional)

Chauffeur function

The front passenger seat in the Vento can be released
from the rear on the Highline version (also known as
chauffeur function). This function allows passengers in
the rear to push the seat forwards for more space.

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21

Occupant safety

The safety equipment

Airbags

The Highline equipment version includes driver and front passenger airbags. The driver airbag has a volume of
60litres and the front passenger airbag has a volume of 80litres.

Seat belts

The front seat belts in the Vento are height adjustable as standard. The rear bench seat features three-point lap
belts on the left and right seats. The middle seat has a two-point lap belt.

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3-point
lap belts

Adjustable front

belt tensioner

22

2-point
lap belt

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The engine/gearbox combinations

Engines

Petrol engine

Diesel engine

5-speed manual gearbox
MQ200-5F
02T

5-speed manual gearbox
MQ250-5F
02R

1.6l 77 kW

4-cylinder MPI

1.6l 77 kW

4-cylinder TDI

6-speed automatic gearbox
AQ250-6F
09G

23

Engines

The 1.6l 77kW CR TDI engine

Technical features

- Grey cast iron cylinder block

- Common rail injection system with piezo injectors
and an injection pressure of max. 1600bar

- Adjustable turbocharger

- Exhaust gas recirculation module, comprising
exhaust gas recirculation valve and cooler for
exhaust gas recirculation

- Oxidising catalytic converter

- Plastic intake manifold

- Software adapted for 77kW

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Technical data Output and torque curve

Engine code CLNA
Type 4-cylinder inline engine
Displacement 1598cm
Bore 79.5mm
Stroke 80.5mm
Valves per cylinder 4
Compression ratio 16.5:1
Maximum output 77kW at 4400 rpm
Maximum torque 250Nm at 1500-2500 rpm
Engine management Continental PCR2
Fuel Diesel compliant with DIN

Exhaust gas
treatment

Emissions standard Bharat stage 4*/EU4
CO

emissions 129g/km

2

3

EN590
Exhaust gas recirculation,

oxidising catalytic converter

[Nm]

240

210

180

150

120

90

60

30

Further information about this engine can
be found in self-study programme no. 442
"The 1.6l TDI engine with common rail
injection system".

[kW]

80

70

60

50

40

30

20

10

1000 3000 5000

[rpm]

24

* Legally prescribed emissions level in India

Output [kW]
Torqu e [ Nm]

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Ceramic glow plugs

New glow plugs with ceramic heater elements are
used on diesel engines with oxidising catalytic
converters. Two different sizes are used for the
different diesel engine types. There is a narrow version
with M8 thread for the 4-valve diesel engine and a
short version with M10 thread for the 2-valve diesel
engine.

Advantages of ceramic glow plugs:

- Better cold starting thanks to higher pre and post
glow temperatures

- Improved emissions due to overall higher glow
temperatures

- Reduced ageing

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2-valve diesel engines

The ceramic glow plugs are made up of connecting pin, plug casing and heating element. The heating element is
made of an insulating protective ceramic casing and an inner conductive heating element that substitutes the tasks
performed by regulating and heating coils in metal glow plugs. The ceramic glow plug has a nominal voltage of 7
volts.

Either Bosch, NGK or Beru glow plugs are
installed in the engine.

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Connecting pin Plug body

4-valve diesel engines

Protective ceramic casing

Ceramic heating element

25

Engines

The 1.6ltr. 77kW MPI engine with intake manifold injection

Technical features

● Grey cast iron cylinder block

● Intake manifold injection

● Camshaft driven via chain

● Reduced main bearing diameter

● Sheet metal oil sump

● Pre-heating for crankcase breather system

integrated in cooling system

● Non-return fuel system

● Exhaust manifold and three-way catalytic

converter joined to form one module

Technical data

Engine code CLSA

Type 4-cylinder inline engine
Displacement 1598cm
Bore 76.5mm
Stroke 86.9mm
Valves per cylinder 4
Compression ratio 10.5 : 1
Maximum output 77kW at 5250 rpm
Maximum torque 153Nm at 3750 rpm
Engine management Magneti Marelli 7GV
Fuel Premium petrol RON 95/93

Exhaust gas treatment Main catalytic converter

Emissions standard Bharat stage 4*/EU4

3

(at least RON 87, but with
reduced output)

with lambda control

Output and torque curve

[Nm]

160

140

120

100

80

60

40

20

1000 2000 3000 4000 5000

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[rpm]

6000

[kW]

80

70

60

50

40

30

20

10

26

* Legally prescribed emissions level in India

Output [kW] - 77kW
Torque [Nm] - 77kW

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Cylinder head and cylinder head cover

The cylinder head is the same as that fitted to the 1.4l/66kW FSI engine bar a few modifications. Several changes
have been made to the valve train due to the greater loads and exhaust gas temperatures. The exhaust valves are
chrome-plated and the valve guides have a higher strength rating.

When installing and removing the cylinder head cover, it is essential that the prescribed steps are performed in
order. These can be found in ELSA. The diagram of the cylinder head cover shows the parts relevant for adjustment
of the camshaft.

Oil dipstick

Tool mounting for

adjustment of camshaft

Temperature sensor G62

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Hall sensor G40

Further information about this engine can
be found in self-study programme no. 296
"The 1.4 ltr. and 1.6 ltr. FSI engine with
timing chain".

27

Engines

System overview of Magneti Marelli 7GV engine management

G28 Engine speed sender

G40 Hall sender

F Brake light switch
F47 Brake pedal switch

F36 Clutch pedal switch

G61 Knock sensor 1

T16

Diagnostic connection

G62 Coolant temperature sender

G79 Accelerator position sender
G185 Accelerator position sender 2

G130 Lambda probe after

catalytic converter

G83 Coolant temperature sender

at radiator outlet

J104 ABS control unit

G39 Lambda probe

G187, G188

Angle sender 1 and 2 for throttle valve drive
on drive-by-wire system

J623 Engine control unit

J519

Onboard supply

control unit

28

G42 Intake air temperature sender
G71 Intake manifold pressure sender

G65 High-pressure sender

K Dash panel insert
J285 Control unit in dash panel insert

J643 Fuel supply relay

J17 Fuel pump relay and
G6 Fuel system pressurisation pump

N30-N33 Injectors for cylinders 1-4

N70, N127, N291, N292

Ignition coils 1-4 with output stage

J338 Throttle valve module

K132 Fault lamp

for electric
throttle

K83 Exhaust gas

warning lamp

J317 Terminal 30 voltage supply relay

N80 Activated charcoal filter solenoid valve 1

J293 Radiator fan control unit

Z19 Lambda probe heater

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29

Power transmission

The 5-speed manual gearbox 02T

This gearbox offers the following features:

● Only installed with petrol engine in Vento

● Low weight

● CO

● Torque capacity up to 170Nm

-optimised gear ratios

2

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The 5-speed manual gearbox 02R

This gearbox offers the following features:

● Due to higher torque capacity,

only for diesel engines

● Further development of 02J gearbox

● CO

● Torque capacity up to 250Nm

-optimised gear ratios

2

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30

The 6-speed automatic gearbox 09G

The 6-speed automatic gearbox 09G is a compact,
light, electronically controlled gearbox for transverse
mounting. This gearbox offers the following features:

● Only installed with petrol engine in Vento

● Max. torque 280Nm

● Weig hs 82 kg

● Measures approx. 350mm

● Torque converter with torque

converter lock-up clutch

● Automatic and Tiptronic modes

The six forwards gears and reverse are implemented
via the arrangement of a simple planetary gear set
with a downstream double planetary gear set.

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Technical data

Weight approx. 82kg FWD
Torque max. 280Nm
Clutch Torque converter
Operating mode Automatic and Tiptronic
Oil volumes 7.0 litres G052025 A2 Lifetime

For more detailed information on the 6-speed automatic gearbox, please refer to self-study programme
no. 309 "6-speed automatic gearbox 09G/09K/09M".

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31

Running gear

Overview

The chassis of the new Vento is the same as that of the Polo 2011. It has McPherson struts on the front axle and a
torsion beam on the rear axle. The vehicle sits 15mm higher.

The running gear is characterised by the following features:

● Toe and camber angle engineered (no setting necessary)

● Front floating caliper brake Ø256mm with fully bolted caliper

● 14" steel rims (as standard), 15" alloys (optional)

● Electro-mechanical power steering (C-EPS)

● Self-adjusting rear Simplex drum brakes Ø 228mm

● ABS, from Highline equipment version

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Further information about the running gear can be found
in self-study programme no. 447 "The Polo 2011"

The front axle

The rear axle

The front axle is a McPherson strut axle. The ride
height has been increased by 15mm as on the Polo

2011. The front axle has a large castor angle-which
provides a strong true running character.

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The rear axle is a torsion beam axle with V-profile.
The ride height, as with the front axle, has been
increased by 15mm. Grooved ball bearings are fitted
as wheel bearings.

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33

Running gear

The wheels and tyres

14" steel rim with wheel trim 15" alloy wheel

Illustration

Description 5Jx14 ET35 6Jx15 ET40
Tyre dimension 175/70 R14 185/60 R15, 195/55 R15

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The braking system

The braking system is a hydraulic dual circuit system. Vehicles without ABS are equipped with a pressure limiter,
which adapts the braking force to the rear axle. The brake light sensor is integrated in the brake master cylinder.

Front wheel brakes

The front axle of the Vento is fitted with vented disc
brakes with a brake disc size of Ø256x22mm.

The front brakes are 3rd generation single-piston
floating caliper brakes. The brakes also feature an
integrated swivel bearing.

34

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Rear wheel brakes

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On the rear axle, the Vento has self-adjusting Simplex
drum brakes. Dimension: Ø200x40mm. The wheel
brake cylinders have a piston diameter of 17.46mm.

Before removing the drum brakes, they
have to be reset. This is carried out in
accordance with ElsaPro via the wheel stud
opening through the brake drum.

8.5" brake servo

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The Vento is fitted with an 8.5" brake servo.
It has a brake master cylinder with integrated brake
light sensor that works on the Hall principle.

Brake light sensor

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35

Running gear

Bosch 8.2 brake system with ABS

Installed in the new Vento on the Highline version is a Bosch 8.2 generation traction control system. The brake servo
with brake master cylinder is installed in a separate place from the ABS hydraulic unit.

The essential features of this system are:

● Smaller component dimensions

● Reduced weight

● Emergency hazard warning flashing on braking

force greater than 7m/s²

● ABS on Highline equipment version

● Pressure limiter not included

Return flow pump

Hydraulic unit

ABS control unit with data
bus connector

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36

The electromechanical power steering system

The servo-assistance of the electromechanical power steering comes from an electric motor on the steering column.
The electromechanical power steering system is compatible with each engine/gearbox combination.

The steering comprises the following components:

- Steering wheel

- Steering column switch

- Steering column

- Steering moment sender G269

-Worm gear

Steering column with height
and rake adjustment

Steering moment sender

G269

- Electromechanical power steering motor V187

- Power steering control unit J500

- Universal joint shaft

- Mechanical steering box

Power steering
control unit J500

Electromechanical power
steering motor V187

Universal joint shaft

Worm gear

Mechanical
steering box

● C-EPS = Column Electric Power Steering;

Servo-unit positioned in steering chain, gear type (worm gear/shaft).

● Further information on the electromechanical power steering system can be found

in self-study programme no. 447 "The Polo 2011".

S474_076

37

Electrical system

Control unit locations

J446 Parking aid

control unit

12

J255 Climatronic

control unit

J387 Door control unit

on driver side

SB Fuse box

Inside vehicle on right
under steering column

J525 Power steering

control unit

J519 Onboard supply

control unit

J234 Airbag control

unit

11

J387 Door control unit

on front passenger

10

side

9

8

J104 ABS control unit

7

6

5

4

J623 Engine control unit

3

2

1

S474_132

J217 Automatic

gearbox
control unit

SA Fuse box

Right of engine bay
on battery

38

The networking concept

T16

J623

J217*

J234

Meaning of the codes

G273* Interior monitoring sensor
G384* Vehicle inclination sender
H8* Anti-theft alarm system horn
J104* ABS control unit
J217* Automatic gearbox control unit

J234* Airbag control unit
J255* Climatronic control unit
J285 Control unit for display in

dash panel insert
J362 Immobilizer control unit
J386 Driver door control unit
J387 Front passenger door control unit
J388 Rear left door control unit
J389 Rear right door control unit
J446* Parking aid control unit
J500 Power steering control unit
J519 Onboard supply control unit
J533 Data bus diagnostic interface
J623 Engine control unit
R* Radio
T16 Diagnosis connector

a

J533

J255* R* G384*

J519

J500

J362
J285

J104*

J446*

J386

Key

Powertrain CAN data bus (500kBit/s)
Convenience CAN data bus (100kBit/s)
LIN data bus (19.2kBit/s)
CAN data bus line
LIN data bus line
K-wire

a Diagnosis CAN data bus (500kBit/s)

* Optional depending on equipment

The data bus diagnostic interface J533
(Gateway) is integrated in the onboard sup­ply control unit J519 and forms the interface
for communication of the data bus systems.

G273*

H8*

J387

J389J388

S474_054

39

Electrical system

The dash panel insert

The dash panel insert installed in the Vento is the same as that installed in the Polo 2011.
The instrument level has one continual glass surface. This leads to a greater viewing angle. The central display in
the dash panel insert is monochrome black and red. For the display, it features exclusively predetermined
segments. The dial faces of the speedometer and rev counter are white illuminated.

Rev counter with
integrated symbol displays

Central display
(multifunction display)

Turn signal indicator

S474_036

40

Setting button for clock Reset button for trip counter Speedometer with integrated

symbol display

Overview of symbols in dash panel insert

Symbols in speedometer

Symbol Brief explanation

Fault in airbag and belt tensioner system

Fuel tank almost empty

At least one door is open or not properly
closed

Handbrake applied, brake fluid too low or
malfunction in braking system

ABS malfunction or failure

Fault in electronic accelerator pedal unit

Engine management malfunction

Symbols in central display

Symbol Brief explanation

Driving time

Warning if stored speed is exceeded
by more than 30km/h

Icy road warning at below +4°C (+39 °F)

Fuel tank almost empty

Average consumption

Service interval display

S474_106a-r

Symbols in rev counter display

Symbol Brief explanation

Main beam on or
headlight flasher pressed

Steering wheel or power steering fault

Alternator fault

Engine cooling system fault

Engine oil pressure too low

41

Electrical system

The electronic immobilizer

The Vento is equipped with an immobilizer of the fourth generation. This is active when the ignition is switched on
and prevents unauthorised operation of the vehicle by intervention in the engine control unit.

The components of the
immobilizer

The immobilizer control unit is integrated in the dash­panel insert. Other components are:

- Control lamp in dash panel insert

- Reader coil in ignition lock

- Programmed ignition key with transponder

- Engine control unit

Engine control unit

Immobilizer control unit

in dash panel insert

42

Reader coil in ignition lock

S474_010

Key with transponder

Features of 4th generation unit

● Rolling code generated and evaluated in engine control unit

and immobilizer control unit respectively

● Online adaption (internet connection) via VAS tester

Function

When the ignition is switched on, a permanently
stored code is sent to the immobilizer control unit from
the transponder. If this code is recognised as valid, a
rolling code is generated randomly in the immobilizer
control unit. This rolling code is transmitted to the
transponder in the vehicle key. An inaccessible
computer process now starts in the transponder and
the immobilizer control unit.

If the result matches, the correct vehicle key is
recognised. A rolling code is then checked between
the immobilizer control unit and engine control unit. If
the process also determines a match, the vehicle is
ready for operation.

This calculated rolling code cannot be decoded due
to the classified computing process. It is therefore
generally not possible to duplicate the vehicle key.
Instead, a new key has to be programmed in the
event of loss or replacement.

Programming transponder

The key transponder is programmed just once,
whereafter the key is paired with the immobilizer.
This is carried out via a corresponding test program
with the aid of the VAS tester. The key cannot be
programmed to any other immobilizer once this has
been done.

43

Convenience electronics

Central locking

A remote central locking system is available for the
Vento from the Highline version. This represents
enhanced user-friendliness.

The central locking with remote control is equipped
with two folding key remote fobs.

Using the three buttons on the folding key remote fob,
the driver can conveniently lock and unlock the car
conveniently without the mechanical key. In addition,
the boot lid can also be released.

Door control elements

Electric window regulators

Release

Folding key

Unlock

S474_308

Lock

Open boot lid

Electric window regulators are installed as standard on all doors. The Vento features the Auto-Down function as
standard from the Trendline version. From the Highline version, all window regulators also feature the rollback
function and the windows in the rear doors have a child lock. On the Highline version, electric exterior mirrors are

also installed.

Electric adjustable

exterior mirror

Central locking

Boot lid release

Window regulator switch

44

Child safety lock for

windows of 2nd seat row

S474_098

Park Distance Control (PDC)

Rear parking aid

An optional parking aid is available for the Vento.
This parking aid makes reverse parking easier.

Four ultrasound sensors are installed in the bumper
area to achieve this. The control unit can be found on
the rear left in the boot. The acoustic signaling device
is installed in the left C-pillar.

The system is active as soon as the ignition is switched
on and reverse gear is engaged.

S474_066

Steady tone Intermittent tone

Ultrasound sensor

Control unit

The distance warning system starts with an acoustic
signal from a distance of 1.60m from an obstacle. The
frequency of the acoustic signal changes as the
distance to the obstacle diminishes. From a distance
of 20cm the acoustic warning is steady.

S474_070

Acoustic device

Reverse

gear switch

S474_068

45

Radio

The radio system

Initially, one radio version is available for the Vento.

Indian Top Power (RCD 030) radio

Technical features

● UHV LOW support

● AM/FM reception

● CD/MP3/WMA

● 4 X 20 Watt

● Self-diagnosis via radio display

● Monochrome display 112mm x 30mm

● Display via segments

● 24 memory slots for AM and FM stations on two

memory levels respectively with 6 slots each

Diagnosis

Diagnosis is only possible via the self-diagnosis feature of the radio. This is started by pressing station-memory
buttons 1 and 6. For the automatic testing process, station memory button 4 then has to be pressed.

Self-diagnosis options

- Aerial diagnosis: possible displays "OK" or "Fault"

- USB port connection diagnosis: possible displays "OK" or "Fault"

- Radio hardware and software version diagnosis

- Speaker final control test:
via the relevant selection, various frequencies are actuated in succession on the different speakers and are
visualised accordingly on the display. The mechanic decides whether the speaker is OK by means of an acoustic
test.

S474_114

46

The aerial of the Vento

S474_102

Radio preparation for radio with single tuner

In the Vento 2011, an active rod-type aerial is installed
on the roof for radio reception. The amplifier
electronics are installed in the base of this aerial.

In the basic version from Trendline, there is at least one radio preparation installed in the Vento. This comprises:

● Power supply wires up to

radio installation slot

● Loudspeakers up to

A pillars

● Aerial wire up to roof aperture

● One active roof aerial with preamplifier

Radio preparation RCD 030

BB

S474_104

AM/FM

47

Heating and air conditioning

There are two different air conditioning systems available for the Vento

● Manual air conditioning in Trendline version

● Fully automatic Climatronic air conditioning in Highline version

Each version has its own control panel. All temperature and ventilation-relevant controls and the air conditioner
control unit are comprised to form one operating unit. The Vento is installed as standard with the manual air
conditioning system.

The manual air conditioning system

The manual air conditioner has an internally
regulated A/C compressor with a magnetic coupling.

The air conditioner is switched on via the air
conditioner "AC" button, which is located on the right
beneath the four-stage blower switch.
The AC button is locked against the blower switch in
stage "0".

The temperature is adjusted using the left-hand rotary
temperature selection knob. The adjustment is
transmitted to the heater flap mechanism in the
air-conditioner unit via a flexible shaft.

A potentiometer is additionally installed on the
operating unit to electronically detect the set
temperature.

The central flap, the footwell and the defroster flap
are adjusted via the right-hand rotary air distribution
knob by means of a flexible shaft.

Rotary knob for
temperature selection

Button for

recirculated air mode

with feedback LED

Blower switch

Rotary knob for

air distribution

S474_048

Button for
air conditioner
with feedback LED

48

The fresh and recirculated air flap is actuated via the
recirculated air mode button. The flap is adjusted via
an electric actuator. The "recirculated air" position is
indicated by the feedback LED in the button.

Further information about the manual
air-conditioner can be found
in self-study programme no. 447
"The Polo 2011".

The fully automatic "Climatronic" air conditioner

On the "Climatronic" air conditioner, all of the functions are controlled fully automatically. In addition to the front
vents, the Climatronic features a centre vent for the rear passenger area. The Climatronic has a self-diagnosis
function and an internally controlled magnetic coupling.

Further information about the heating and
air conditioning can be found in
self-study programme no. 263
"The Polo 2002".

Rotary knob for ON/OFF
and fan speed

Display for Climatronic status AC button

Rotary knob for adjusting

interior temperature

S474_046

Fresh air and recirculated air flaps

On the manual air conditioning system, the vehicle's interior is treated as one single climatic zone. The climate
control device has a combined fresh air/recirculated air flap that is actuated by a servomotor. The air distribution
flaps are actuated by a flexible shaft on the manual air conditioning system. The temperature is adjusted using the
rotary knob by adding hot or cold air.

On the Climatronic air conditioner, the vehicle's interior is also treated as one single climatic zone. Unlike the
manual system, however, the temperature and air distribution flaps are actuated individually by a servomotor. The
temperature is adjusted using the rotary knob by adding hot or cold air.

49

Heating and air conditioning

System overview Climatronic

G89 Temperature sensor - fresh air intake duct
G261 Outlet temperature sender, left footwell
G262 Outlet temperature sender, right footwell
G150 Outlet temperature sender, left
G151 Outlet temperature sender, right

G65 High-pressure sender

G220Servomotor potentiometer for

left temperature flap

G221

Servomotor potentiometer for

right temperature flap

G135 Servomotor potentiometer for defroster flap
G143 Servomotor potentiometer for recirculated

air flap

G112 Servomotor potentiometer for central flap
G113 Servomotor potentiometer for

backpressure flap

G263 Outlet temperature sender, evaporator

J285 Control unit with display in

dash panel insert

J255 Operating
unit with
Climatronic
control unit

Powertrain CAN

50

J220 Motronic control unit

S474_052

V107 Defroster flap servomotor

N25 Magnetic coupling for

air-conditioning compressor

V2 Fresh air blower with integrated

blower regulator (on manual air conditioner
control system is not electronic but works using
series resistors instead).

Convenience CAN

J533 Data bus diagnostic interface
J519 Onboard supply control unit

51

474

© VOLKSWAGEN AG, Wolfsburg
All rights and rights to make technical alterations reserved.

000.2812.46.20 Technical status 08.2010

Volkswagen AG
After Sales Qualifizierung
Service Training VSQ-1
Brieffach 1995
D-38436 Wolfsburg

❀ This paper was manufactured from pulp that was bleached without the use of chlorine.