2008 AUDI A4 belt

Contents3
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Safety
. . . . . . . . . . . . . . . . . . . . . . .
Safe driving
. . . . . . . . . . . . . . . . . . . .
General notes . . . . . . . . . . . . . . . . . .
Correct sitting positions . . . . . . . .
Pedal area . . . . . . . . . . . . . . . . . . . . .
Stowing luggage safely . . . . . . . . .
Seat belts
. . . . . . . . . . . . . . . . . . . . . .
Why is it so important to use seat
belts? . . . . . . . . . . . . . . . . . . . . . . . . .
Forces acting in a collision . . . . . .
How to wear seat belts properly .
Belt tensioners . . . . . . . . . . . . . . . . .
Airbag system
. . . . . . . . . . . . . . . . .
Description of airbag system . . . .
Front airbags . . . . . . . . . . . . . . . . . .
Side airbags . . . . . . . . . . . . . . . . . . .
Head-protection airbags
(sideguard) . . . . . . . . . . . . . . . . . . . .
Deactivating the front passenger's
airbag via the key-operated switch
Child safety
. . . . . . . . . . . . . . . . . . . .
Points to remember if children are
travelling in the car . . . . . . . . . . . . .
Child safety seats . . . . . . . . . . . . . .
Fitting child safety seats . . . . . . . .
Driving tips
. . . . . . . . . . . . . . . .
Intelligent technology
. . . . . . . . . .
Electronic stabilisation program
(ESP) . . . . . . . . . . . . . . . . . . . . . . . . . .
Brakes . . . . . . . . . . . . . . . . . . . . . . . . .
Power steering (servotronic) . . . . .
Four-wheel drive (quattro®) . . . . . .
Power management . . . . . . . . . . . .
Your vehicle and the
environment
. . . . . . . . . . . . . . . . . . .
Running in . . . . . . . . . . . . . . . . . . . . .
Emission control systems . . . . . . .
How to improve economy and
minimise pollution . . . . . . . . . . . . . .
Environmental compatibility . . . . .
Towing a trailer
. . . . . . . . . . . . . . . .
Driving the vehicle with a trailer or
caravan . . . . . . . . . . . . . . . . . . . . . . .
Removable towing bracket . . . . . .
General maintenance
. . .
Care of vehicle and cleaning
. . .
General notes . . . . . . . . . . . . . . . . . .
Care of exterior . . . . . . . . . . . . . . . . .
Care of interior . . . . . . . . . . . . . . . . .
Fuel and filling the tank
. . . . . . . .
Petrol . . . . . . . . . . . . . . . . . . . . . . . . . .
Diesel . . . . . . . . . . . . . . . . . . . . . . . . .
Filling the tank . . . . . . . . . . . . . . . . . .
Checking and topping up fluidsBonnet . . . . . . . . . . . . . . . . . . . . . . . .
Engine compartment layout . . . . . .
Engine oil . . . . . . . . . . . . . . . . . . . . . .
Cooling system . . . . . . . . . . . . . . . . .
Brake fluid . . . . . . . . . . . . . . . . . . . . .
Battery . . . . . . . . . . . . . . . . . . . . . . . .
Windscreen washer . . . . . . . . . . . . .Wheels and tyres
. . . . . . . . . . . . . . .
Wheels . . . . . . . . . . . . . . . . . . . . . . . .
Run flat tyres . . . . . . . . . . . . . . . . . . .
Accessories and modifications
to the vehicle
. . . . . . . . . . . . . . . . . . .
Accessories and replacement
parts . . . . . . . . . . . . . . . . . . . . . . . . . .
Modifications . . . . . . . . . . . . . . . . . .
Radio transmitters and business
equipment . . . . . . . . . . . . . . . . . . . . . 185
186
186
188
191
192
194
194
195
197
199
201
201
203
205
207
208
210
210
213
216221
222
222
224
225
226
226
229
229
229
229
231
232
232
235243
244
244
244
247
251
251
251
252
254
254
256
257
260
262
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268
268
274
277
277
277
278
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Instruments and warning/indicator lamps15
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Caution
Never run the tank completely dry. The irregular supply of fuel can
cause misfiring, which would allow unburnt fuel to enter the
exhaust system. This can lead to overheating and damage to the
catalytic converter.Warning and indicator lampsOverview
The warning and indicator lamps indicate a number of
different functions and possible faults.Fig. 7 Instrument cluster with warning and indicator lamps

Dynamic steering
⇒page 16

Engine management (alternative
to)
⇒page 16

(alternative to
)
⇒page 16

Electronic stabilisation program (ESP)
⇒page 17

Airbag system
⇒page 17

Tyre pressure monitoring
⇒page 17

Left turn signals
⇒page 18

Trailer turn signals*
⇒page 18

Seat belt warning lamp
⇒page 18

Emission control system
⇒page 18

lane assist (active)
⇒page 18

lane assist (inactive)
⇒page 18

Main beam headlights
⇒page 18

Right turn signals
⇒page 18

Cruise control system*
⇒page 19
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Instruments and warning/indicator lamps17
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Note
•
If the glow plug indicator lamp should start flashing while the
vehicle is moving, this indicates a fault in the engine management
system. The engine should be serviced without delay.
•
If the indicator lamp fails to light up when the ignition is
switched on, this can mean that the glow plug system is defective.
The engine should be serviced.
Electronic stabilisation program (ESP)

This warning lamp monitors the electronic stabilisation
program.The warning lamp
 has the following functions:
•
It flashes when the ESP or traction control system (ASR) inter-
venes while the vehicle is in motion.
•
The warning lamp will light up continuously if the ESP or the
traction control system (ASR) has been switched off using the ESP
OFF button ⇒page 222.
•
It lights up when the ignition is switched on and should go out
again after about 2 seconds. This signals that the lamp is working
properly.
•
It will light up continuously if there is a malfunction in the ESP.
•
It will also come on if a fault should occur in the ABS because the
ESP operates in conjunction with the ABS.
If the battery has been disconnected, if the battery voltage is very
low, or if the engine has been started from an outside power source,
the ESP system will perform an initialisation of the various on-board
sensors while you drive the first few metres. The warning lamp will
light up during this period. It will go out when the initialisation has
been completed.
If the warning lamp lights up and stays on after the engine is
started, this may mean that the control system has temporarily
switched off the ESP. In this case the ESP can be reactivated by switching the ignition off and then on again. If the warning lamp
goes out, this means the system is fully functional.
For further information on the ESP ⇒page 222.
Airbag system

This warning lamp monitors the airbag and seat belt
tensioner system.The warning lamp
 should light up for a few seconds when the
ignition is switched on.
If the warning lamp does not go out, or if it lights up, flashes or
flickers when the vehicle is moving, this indicates a malfunction in
the system. This is also the case if the warning lamp does not light
up when the ignition is switched on.
WARNING
If a malfunction should occur, have the system checked immedi-
ately by a qualified workshop. If this is neglected, there is a risk
that the airbag system and/or belt tensioners may not be acti-
vated in an accident.Tyre pressure monitoring

The tyre pressure should be corrected as soon as possible
if it is too low.If the
 symbol flashes for about a minute and then remains lit after
you switch on the ignition, there is a fault in the system. Please
contact the nearest qualified workshop as soon as possible.
For more detailed information on the tyre pressure monitoring
system, please refer to ⇒page 39.
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Instruments and warning/indicator lamps 18Turn signals
 
Depending on which turn signal is operated, either the left
 or
right
 indicator lamp flashes. Both indicator lamps will flash when
the hazard warning lights are switched on.
If one turn signal should fail, the indicator lamp will start flashing
twice as fast.
This does not apply when towing a caravan or trailer. The indicator
lamp will stop flashing if one of the turn signals on the vehicle or the
caravan/trailer should fail. For further information on the turn
signals ⇒page 62.
Applies to vehicles: with towing bracketTrailer turn signals

The indicator lamp flashes when the turn signals are
operated while towing a caravan or trailer.The indicator lamp
 flashes when the turn signals are operated,
provided a caravan or trailer is correctly attached and connected to
the vehicle.
The indicator lamp will not flash if one of the turn signals on the
trailer fails.
Seat belt warning lamp

The warning lamp acts as a reminder to fasten the seat
belts.After switching on the ignition, the warning lamp
 will remain lit
until the driver and front passenger (if applicable) have fastened
their seat belts. When the vehicle has gathered speed you will also
hear a warning chime.
For further information on the seat belts ⇒page 194.
Emission control system

If the warning lamp lights up continuously you should take your
vehicle to a qualified workshop as soon as possible in order to have
the fault rectified.
If the warning lamp flashes drive on at reduced speed and seek
professional help in order to avoid damage to the catalytic
converter.
For further information on the catalytic converter ⇒page 229.Applies to vehicles: with lane assistlane assist (active)

The indicator lamp confirms that the system is fully functional. You
will be warned if you are about to cross the lane markings detected
by the system.
For more information on the lane assist system, please see
⇒page 145.lane assist (inactive)

The warning lamp indicates that the system is switched on.
However, you will not be warned if you cross the lane markings.
For more information on the lane assist system, please see
⇒page 145.Main beam headlights

The indicator lamp
 lights up when the main beams are on or
when the headlight flasher is operated.
For further information on the main beam headlights ⇒page 62.
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Driver information system33
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data easily when braking. This could cause the tail of the vehicle to skid
sideways. Drive carefully to the nearest qualified workshop and
have the fault rectified.
Note
The warning lamp
 in the instrument cluster will start flashing as
well if there is a fault in the brake system.
Fault in the cooling system

Faults in the cooling system must be rectified immedi-
ately.If the
 symbol flashes in the display, this means that
either the coolant temperature is too high or the coolant
level is too low. The symbol is accompanied by a driver
message giving you more information about the fault. This
message will disappear after about 5 seconds, but you can
call it up again at any time by pressing the button:
Switch off engine, check coolant level
–Stop the vehicle.
– Switch off the engine.
– Check the coolant level ⇒page 261.
– Add more coolant if necessary ⇒page 261.
– Wait for the symbol to go out before driving on.
– Obtain professional assistance if necessary.
If the coolant level is correct, the overheating may be caused by a
malfunction of the radiator fan.If the alternator warning lamp lights up as well ⇒page 32, it is
possible that the drive belt has broken.
WARNING
•
If your vehicle should break down for technical reasons, stop it
at a safe distance away from moving traffic, switch off the engine
and turn on the hazard warning lights ⇒page 61, “Hazard
warning lights ”.
•
Never open the bonnet if you can see or hear steam or coolant
escaping from the engine compartment; there is a risk of being
scalded. Wait until you can no longer see or hear escaping steam
or coolant.
•
The engine compartment of any motor vehicle is a dangerous
place. Before carrying out any work in the engine compartment,
switch off the engine and allow it to cool down. Please observe the
important safety warnings ⇒page 255, “Working on components
in the engine compartment”.Caution
Do not drive on if the symbol
 has come on to indicate a fault in
the cooling system, otherwise there is a risk of damaging the
engine.
Engine oil pressure too low

If the engine oil pressure is too low the fault must be recti-
fied immediately.If the

symbol flashes in the display, the oil pressure is
too low. The symbol is accompanied by a driver message
giving you more information about the fault. This message
WARNING (continued)
SET
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Seats and storage 74
Adjusting height of lumbar support*
– Press the top or bottom part of the adjuster switch to
move the lumbar support upwards or downwards as
required.
Raising or lowering the seat
– Pull the lever ⇒page 73, fig. 75 up or down repeat-
edly (i.e. pump the lever).
Adjusting backrest angle
– Lean forwards to take your weight off the backrest.
– Turn the adjuster wheel ⇒page 73, fig. 75 to set the
angle of the backrest as required.
WARNING
•
Never adjust the driver's seat when the vehicle is moving - this
could lead to an accident.
•
Be careful when adjusting the seat height. Careless or uncon-
trolled use of the seat adjustment can cause injuries.
•
Do not drive with the backrests of the front seats reclined too
far as otherwise the seat belt and airbag could fail to restrain the
wearer properly in an accident, possibly leading to injury.
Electric adjustment of front seatsSeat adjuster controls
The arrangement of the switches corresponds with the
design of the seats.The adjustment switches for the seat and backrest correspond with
the design of the seat. The seats can be adjusted simply by pressing
the corresponding switch in the required direction.
Adjuster controls
Lumbar support
Seat adjuster
Backrest adjuster
Thigh suppor t*Seat adjustment
You can use the electrical adjustment to set the position,
angle and shape of the seat so that you can travel in a
safe and comfortable sitting position.Before adjusting your seat, please read and observe the
warnings ⇒.
A4
A5
A6
Fig. 76 Front seat:
Adjuster controls
AAABACAD
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Seats and storage75
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Adjusting contour of lumbar support
– Press the front or rear of switch to increase or
decrease the curvature of the lumbar support as
required.
Adjusting height of lumbar support
– Press the top or bottom of adjuster switch to move the
lumbar support upwards or downwards as required.
Moving seat backwards or forwards
– Press switch ⇒page 74, fig. 76 forwards or back-
wards.
Adjusting seat height
– Press switch up or down.
Raising/lowering seat at front
– Press the front of switch up or down.
Raising/lowering seat at rear
– Press the rear of switch up or down.
Adjusting backrest angle
– Press switch forwards or backwards.
Extending or shortening the thigh support*
– Lift the control below the seat cushion. The front seat
cushion will spring forward.
– Slide the seat cushion back to the normal position after
each use.
WARNING
•
Never adjust the driver's seat when the vehicle is moving - this
could lead to an accident.
•
The electrical seat adjustment also works when the ignition is
off and when the key is not in the ignition. To avoid accidental inju-
ries, never leave children unattended in the vehicle.
•
Be careful when adjusting the seat height. Careless or uncon-
trolled use of the height adjustment can cause injuries.
•
Do not drive with the backrests of the front seats reclined too
far as otherwise the seat belt and airbag could fail to restrain the
wearer properly in an accident, possibly leading to injury.
Seat memoryMemory for driver's seat
You can use the recall buttons in the driver's door to store
and recall the seat adjustments for two drivers.As well as the driver's seat position, the seat memory will store and
recall the exterior mirror settings (if the vehicle is equipped accord-
ingly):
AA
AA
ABAB
ABAB
ACAD
Fig. 77 Driver's door:
Seat memory
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Seats and storage77
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Applies to vehicles: with seat memoryActivating memory for remote control key
The relevant function must be activated on the sound
system or MMI* so that the settings stored in the memory
can be recalled using the remote control key.– Select: Function selector button > Seat adjustment
> Driver's seat > Remote control key > on.
Head restraintsAdjusting the front head restraints
In combination with properly worn seat belts, the head
restraints offer effective protection. However, they must
always be properly adjusted to suit the height of the occu-
pant.Raising head restraint
– Take hold of the sides of the head restraint with both
hands.
– Push the head restraint upwards.
Lowering head restraint
– Take hold of the sides of the head restraint.
– Press button ⇒fig. 79 and push the head restraint
downwards.For best protection, the top of the head restraint should be at least
at eye level, or higher.
The height of the head restraints is adjustable. They should be set
to suit the height of the occupant. In combination with the seat
Fig. 78 Display:
Driver's seat
CAR
Fig. 79 Front seat:
Adjusting head
restraint
AA
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