2008 AUDI A4 suspension

Driver information system 36
NoteOn some models the speed limit warning 1
 and speed limit
warning 2
 will also be displayed as yellow symbols. These always
appear as a small symbol at the top of the display ⇒page 28.
Applies to vehicles: with Audi drive selectDynamic steering

 Dynamic steering: system fault
This message and the
 symbol will appear if a fault develops in the
system while the vehicle is moving. You can continue driving care-
fully at reduced speed to the next qualified workshop, however the
steering may feel heavier and its response may be more sensitive than usual. In addition, it is possible that the steering wheel will be
off centre when driving in a straight line.
Dynamic steering: initialising
If this message appears and the warning lamp
 flashes in the
instrument cluster, this indicates that the dynamic steering is being
initialised. The steering wheel will move slightly after the engine is
started. The dynamic steering may be initialised if the steering
wheel was moved while the vehicle was stopped. The warning lamp
will go out when the initialisation has been completed.
WARNING
Have the system malfunction in the dynamic steering repaired by
a qualified workshop as soon as possible – risk of accident.
Note
The stabilisation functions of the dynamic steering ⇒page 222 are
not available in the event of a system malfunction.Applies to vehicles: with advanced keyKey not in vehicle

 Key not in vehicle
This message will appear together with the symbol
 if the remote
control key is removed from the vehicle while the engine is running.
This is to remind you not to continue driving without the key (for
example if you change drivers).
If the remote control key is not in the vehicle you will not be able to
switch on the ignition or restart the engine after it has been
switched off. You will also not be able to lock the vehicle from the
outside.

Dynamic headlight range con-
trol* defective
⇒page 39

Battery in remote control key
⇒page 44

Electro-mechanical
parking brake
⇒page 123

adaptive light* defective
⇒page 39

Ignition lock defective
⇒page 39

Windscreen wiper defective
⇒page 39

Suspension control
⇒page 39
TPMS
Tyre pressure monitoring sys-
tem
⇒page 39
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Driver information system39
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Applies to vehicles: with dynamic headlight range controlHeadlight range control defective

 Headlight range control defective
This symbol
 indicates a malfunction in the dynamic headlight
range control. Take the vehicle to a qualified workshop to have the
dynamic headlight range control function repaired.
Applies to vehicles: with adaptive lightadaptive light defective

 adaptive light defective
This symbol
 indicates that the adaptive light is defective. Take
the vehicle to a qualified workshop to have the headlights and/or
the control unit for the adaptive light repaired.
Ignition lock defective


Ignition lock defective
If the symbol

lights up in the display, there is a malfunction in
the electronic ignition lock. Take the vehicle to a qualified workshop
to have the problem remedied.
Applies to vehicles: with Audi drive selectSuspension control

This warning lamp monitors the damping effect of the
shock absorbers.

Suspension: system fault
If the  symbol lights up in the display, there is a malfunction in the
vehicle suspension. Take the vehicle to a qualified workshop to have
the problem remedied.
Windscreen wipers defective

 Windscreen wipers defective
This symbol
 indicates a malfunction in the electronics for the
windscreen wipers. Take the vehicle to a qualified workshop to have
the windscreen wiper system repaired.
Tyre pressure monitoring systemApplies to vehicles: with tyre pressure monitoringTyre pressure monitoring display appears
The tyre pressure monitoring display in the instrument
cluster informs the driver if the tyre pressure is too low or
a system malfunction has occurred.
Fig. 27 Display:
Warning message with
symbol and text
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Audi drive select159
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Audi drive selectAdjusting the vehicle set-upApplies to vehicles: with Audi drive selectIntroductionAudi drive select allows you to use different set-ups on your vehicle.
Using the three modes COMFORT, AUTO and DYNAMIC, you can
change the set-up at the press of a button for a more comfort-
oriented or dynamic drive.
On vehicles with MMI*, you also have the INDIVIDUAL* mode, which
allows you to adapt the vehicle set-up individually to your personal
driving style. For example, you might choose to combine a more
dynamic engine set-up with a lighter steering response.Applies to vehicles: with Audi drive selectDescriptionThe possible vehicle set-up in each mode depends on which equip-
ment is installed on your vehicle. The engine and the servotronic
power steering are basic parts of your vehicle which are always
included in the set-up. In addition, you can change the characteris-
tics of the automatic gearbox*, dynamic steering* and suspension
control*.
The response of the engine and automatic gearbox* to accelerator
pedal movements will be more spontaneous or balanced,
depending on which mode you select.
The servotronic power steering ⇒page 225 will also respond to
different drive set-ups.
The dynamic steering* alters the steering ratio depending on the
road speed to optimise the amount of steering effort required by the
driver at any given time. This enables the sensitivity of the steering to be reduced at higher speeds in order to improve the handling of
the vehicle. The steering is more direct at lower speeds to minimise
the amount of steering effort required by the driver, e.g. when
manoevring in tight spaces. The dynamic steering* also provides a
more agile steering response at low and medium speeds. You can
adjust the basic characteristics of the steering in the Audi drive
select menu.
The suspension control* uses sensors to collect information on
steering movements, braking and acceleration input by the driver,
road surface quality, road speed and vehicle loading. Using this
information, the suspension can be adapted almost instantane-
ously to changing driving conditions. With Audi drive select, the
driver can choose between dynamic and comfort-oriented suspen-
sion set-ups (DYNAMIC and COMFORT modes), or opt for a more
balanced set-up (AUTO mode).
The following table provides an overview of the characteristics in
each driving mode.
If your vehicle is equipped with dynamic steering*, the servotronic
power steering settings are adjusted in the Dynamic steering*
menu.
Systems
COMFORT
AUTO
DYNAMIC
Engine or
engine/gearbox*
Balanced
Balanced
Dynamic
Steering
Comfortable
Balanced
Dynamic
Dynamic steering*
Comfortable
(indirect)
Balanced
(direct)
Dynamic
(direct)
Suspension control*
Comfortable
Balanced
Dynamic
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Audi drive select 160
Note•
You can select the sport program for gear changes on vehicles
with an automatic gearbox* by activating the DYNAMIC mode. There
is no S position on the selector lever.
•
You may hear a noise on vehicles with dynamic steering* when
you start or stop the engine. This is no cause for concern.
Applies to vehicles: with Audi drive selectSelecting the driving mode
You can choose between COMFORT, AUTO, DYNAMIC and
INDIVIDUAL*.
The control is next to the selector gate ⇒fig. 174 on vehi-
cles with sound system, or in the centre console ⇒fig. 175
on vehicles with MMI*.
– Switch on the ignition.
– Press the left or right arrow button until the desired
mode lights up in red.You can change the driving mode while the vehicle is stationary or
moving. If traffic conditions permit, take your foot off the acceler-
ator briefly after you change the mode so that the new mode is also
activated for the engine.
COMFORT
The COMFORT mode alters the vehicle set-up for a more comfort-
able ride. The response of the engine and automatic gearbox* to
accelerator pedal movements is balanced. The steering is light and
indirect* and the suspension control* is set to soft. This setting is
suitable for driving long distances on motorways for example.
AUTO
The overall impression in AUTO mode is of a comfortable but
dynamic ride. This setting is suitable for everyday use.
DYNAMIC
DYNAMIC gives the vehicle a tighter set-up. The engine reacts spon-
taneously to accelerator pedal movements and the steering is
dynamic and direct*. The suspension control* is stiffer and the
automatic gearbox* changes gear at higher engine speeds. This
setting is ideal for performance driving.
INDIVIDUAL*
You can configure this mode on the MMI according to your personal
preferences.
Fig. 174 Selector gate:
Control for Audi drive
selectFig. 175 Centre
console: Control for
Audi drive select
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Wheels and tyres269
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
– The tyre pressures should only be checked when the
tyres are cold. The slightly raised pressures of warm tyres
must not be reduced.
– The pressures must be altered to suit major changes in
the load being carried.
– Avoid fast cornering and hard acceleration.
– Inspect the tyres for irregular wear from time to time.Tyre pressure and vehicle loading
The tyre pressure must be adjusted according to the load the vehicle
is carrying. We recommend adhering to the tyre pressure specifica-
tions for a maximum load. The tyre inflation pressures are listed on
a sticker on the end face of the driver's door ⇒page 268, fig. 261.
However, if you prefer an extra-smooth ride and the vehicle is not
fully loaded, you can select the tyre pressure for a normal load (no
more than three people travelling in the vehicle). However, should
you wish to drive with a full load you must increase the tyre pressure
to the specified maximum.
Under-inflation or over-inflation will reduce the life of the tyres
considerably and also impair the car's handling. Correct inflation
pressures are very important, especially at high speeds. The pres-
sures should therefore be checked at least once a month and before
starting a journey.
Do not forget the spare wheel* when checking the tyre pressures.
Keep the spare tyre inflated to the highest pressure required for the
road wheels.
Driving habits
Fast cornering, heavy acceleration and hard braking (squealing
tyres) all increase tyre wear.Wheel balancing
The wheels on new vehicles are balanced. However, various factors
encountered in normal driving can cause them to become unbal-
anced, which results in steering vibration.
Unbalanced wheels should be rebalanced, as they otherwise cause
excessive wear on steering, suspension and tyres. A wheel must
also be rebalanced when a new tyre is fitted or if a tyre is repaired.
Incorrect wheel alignment
Incorrect wheel alignment causes excessive tyre wear, impairing the
safety of the vehicle. If you notice excessive tyre wear, contact your
Audi dealer.
WARNING
•
Always adapt the tyre pressure accordingly when the vehicle
load changes.
•
Under-inflated tyres flex more and can overheat at continuous
high speeds. This can cause tread separation and tyre blow-out,
which could result in an accident.For the sake of the environment
Under-inflated tyres will increase the fuel consumption.
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Wheels and tyres271
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
– Never use tyres whose actual size exceeds the dimen-
sions of the factory-approved makes of tyre.
– If you wish to fit the vehicle with non-standard rims or
tyres, it is advisable to consult an Audi dealer before
purchasing them.The tyres and wheel rims are an essential part of the vehicle's
design. The tyres and rims approved by Audi are specially matched
to the characteristics of the vehicle and make a major contribution
to good roadholding and safe handling ⇒.
The sizes of the rims and tyres approved for your vehicle are listed
in the vehicle's documents (e.g. EC Certificate of Conformity or COC
document
3)). The vehicle documents vary depending on the
country of residence.
Understanding the tyre designations makes it easier to choose the
correct tyres. For example, radial ply tyres have the following tyre
designations marked on the sidewall:
225 / 50 R 17 94 Y
This contains the following information:
The manufacturing date is also indicated on the tyre sidewall
(possibly only on the inner side of the wheel):
DOT ... 1006...means, for example, that the tyre was produced in the 10th week of
2006.
Please note that with some types of tyres, the actual tyre size can
differ from the nominal size marked on the tyre (for instance 225/50
R 17 94 Y), and there may be significant differences in the contours
of the tyres, even though the tyres are marked with the same
nominal size designation. When replacing the tyres, it is therefore
important to make sure that the actual size of the new tyres does
not exceed the dimensions of the factory-approved makes of tyre.
Failure to observe this requirement can affect the clearance needed
for the tyres. This could result in contact between the tyres and
suspension components or bodywork. The brake lines could also be
damaged and the vehicle's safety could be severely impaired ⇒.
When using tyres with the maximum permitted nominal dimen-
sions, this can also void the vehicle's registration.
If you use tyres that are approved by Audi you can be sure that the
actual tyre dimensions will be correct for your vehicle. If you decide
to fit a different type of tyre, you must obtain the appropriate manu-
facturer's certificate from the tyre retailer to confirm that the tyres
are suitable for your vehicle. Keep this certificate in a safe place.
Your local Audi dealer will be able to advise you on which tyres may
be fitted to your vehicle.
On vehicles with four-wheel drive, all four tyres must always be
fitted with tyres of the same type, make and tread pattern, as other-
wise the driveline can be damaged by continuous variations in the
wheel speeds. For the same reason, only use a spare wheel* with
the same tyre dimensions as the normal road wheels.
It the spare tyre* is not the same type as the tyres fitted on the car
(for example if the car has winter tyres or wide-section tyres) you
should only use the spare tyre if a puncture occurs, and then only
for a short period of time. In this case, please drive with extra care.
Refit the normal road wheel as soon as possible.
It is best to have all servicing of wheels and tyres performed by a
qualified workshop. They have the necessary special tools and
3)COC = certificate of conformity
225
Tyre width in mm
50
Height/width ratio in %
R
Tyre construction: Radial
17
Rim diameter in inches
94
Load rating code
Y
Speed rating code letter
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Accessories and modifications to the vehicle277
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Accessories and modifications to the vehicleAccessories and replacement partsAlways ask your dealer or specialist retailer for advice
before purchasing accessories and replacement parts.Your car is designed to offer a high standard of active and passive
safety. For this reason, we recommend that you ask an Audi dealer
for advice before fitting accessories or replacement parts. Audi
dealers have the latest information from the manufacturer and can
recommend accessories and replacement parts which are suitable
for your requirements. They can also answer any questions you
might have regarding official regulations.
We recommend you to use only Audi accessories and Audi Genuine
parts
®. Audi has tested these parts and accessories for suitability,
reliability and safety. Audi dealers have the necessary experience
and facilities to ensure that the parts are installed properly.
Although the market is constantly scrutinised, Audi cannot judge or
assume responsibility for the reliability, safety and suitability of
non-genuine products - even though in some instances, these parts
may have been approved by an officially recognised technical
testing authority or accompanied by an official approval certificate.
Any retro-fitted equipment which has a direct effect on the vehicle
and/or the way it is driven (e.g. cruise control system or electroni-
cally-controlled suspension) must be approved for use in your
vehicle and bear the e mark (the European Union's approval
symbol).
If any additional electrical components are fitted which do not serve
to control the vehicle itself (for instance a refrigerator box, laptop or
ventilator fan, etc.), these must bear the CE mark (manufacturer
conformity declaration in the European Union).
WARNING
Never attach accessories (such as cup holders or telephone
brackets) to the surfaces covering the airbag units or the areas
around the airbags: this could cause injury if the airbag is
triggered.ModificationsModifications must always be carried out according to
our specifications.Unauthorised modifications to the electronic components or soft-
ware in the vehicle may cause malfunctioning. Due to the way the
electronic components are linked together in networks, other
systems may be affected by the faults. This can seriously impair
safety, lead to excessive wear of components, and also invalidate
the type approval for your vehicle.
You will appreciate that your Audi dealer cannot be held liable for
any damage caused by modifications and/or work performed incor-
rectly.
We recommend that all work should be performed by an Audi work-
shop using Audi Genuine parts
®.
WARNING
Incorrectly performed modifications or other work on your vehicle
can lead to malfunctions and cause accidents.
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Fuses and bulbs303
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Fuse list for luggage compartment– Remove the trim.
– Open the fuse cover.Fuse listFuse list
Fuse listNo.
Electrical equipment
amps
Fuse carrier (black)
1
Vacant
2
Control unit for trailer
15
3
Control unit for trailer
20
4
Control unit for trailer
20
5
Electronic parking brake
5
6
Electronic suspension control
15
7
Electro-mechanical parking brake
30
8
Control unit 2 for vehicle's electrical system
30
9
Vacant
Fig. 286 Diagram of
fuse panel
10
Control unit 2 for vehicle's electrical system
30
11
Control unit 2 for vehicle's electrical system
20
12
Vacant
No.
Electrical equipment
amps
Fuse carrier (brown)
1
Electrical socket
15
2
Vacant
3
Radio/navigation
7.5
4
Control unit for digital sound system
30
5
MMI
5
6
Door control unit (driver's side)
30
7
Electro-mechanical parking brake
30
8
Seat heating, rear
30
9
Door control unit (passenger side)
30
10
Remote control receiver for auxiliary heating
5
11
Door control unit (passenger side)
15
12
Control unit for reversing camera
5
No.
Electrical equipment
amps
Fuse carrier (red)
1
Socket, centre console, rear
15
2
Socket, centre console, front
15
3
Socket, luggage compartment
15
No.
Electrical equipment
amps
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