ignition AUDI A4 AVANT 2008 Repair Manual

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Applies to vehicles: with Home link® univer sal rad io frequency remote contro l
Programming the HomeLink ® Universal
Remote Control
The Homelink® Universal Remote Control is programmed
in two phases: inside the vehicle at the overhead keypad
and outside the vehicle at the front bumper.
Fig . 159 Driver's side
sun visor, folded up:
Homelink ® keypad
Fig. 160 Front bumper,
left side : location of
transmitter unit
For best results, the battery in your original remote control
should be new or fully charged before you start program­
ming. If your garage door opener receiver (located in the
garage) is equipped with an antenna, make sure the
antenna is hanging straight down. For newer garage door
openers utilizing a rolling code, follow the procedures
=> page 161, "Rolling code programming" .
Before programming 1. Set the parking
brake =>& .
2. Tur n the ignition on. Do not start the engine!
Phase 1: programming the overhead keypad
3. Fold the sun visor flat up against the roof liner.
4.
For first time programming only, press and hold the two
outside buttons
G) and @until the light emitting diode
(LED) @=> fig. 159 begins to flash after approximately 20
seconds. Release both buttons.
- This procedure erases the factory -set default codes and
does not have to be repeated to program additional
remote controls.
5. Press the button for the transmitting channel you wish to
use
G) ,@ or @ and keep holding this button until the
indica tor
light@ starts flashing slowly.
- You now have 5 minutes in which to copy the signal from
your remote control onto the Homelink® transmitter unit.
6. Then take the original remote control for the gate or
garage door opener to the transmitter located in the
front bumper of your
vehicle => fig. 160.

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Identifying a rolling code:
-Press the button for the programmed transmitter
channel again and hold it down.
- If the light emitting
diode @=> page 160 , fig. 161 first
flashes quickly and then remains lit after 2 seconds, the
garage door opener is using a rolling code.
•
A pplies to vehicle s: w it h H omelin k® u niv ers al radio fr equ enc y remot e con tro l
Rolling code programming
A rolling code is programmed in two phases: at the
garage door opener motor and inside the vehicle at the
overhead keypad.
Phase 1:
programming the garage door opener motor
1. Make sure that your vehicle is located within operat ing
range of the remote controlled garage door opener.
2. Locate the set button (teach button) on the garage door
opener motor (refer to the operating instructions for the
garage door opener).
3. Press the set button (teach button) on the garage door
opener motor.
Phase 2: programming the overhead keypad
4. Set the parking brake.
5. Turn the ignition on. Do not start the engine!
6. On the overhead keypad press the button for the previ ­
ously programmed transmitter channel.
7. Press this button a
second time in order to finish the
rolling code programming.
Controls and equip ­
ment The vehicle should be
located no further than 15 ft (5 m) from the
remote controlled garage door opener to remain within the average
signal range o f mos t remote con trolled systems.
Refer to the garage door opener operating instructions to locate the
set button (t each button) on the garage door opener motor .
After the keypad has been programmed, the g arage door opener
should recognize the radio frequency s ignal from the Homelink ®
Universal Remote Control and respond to signals from it.
[ i] Tips
Having a second person assist you makes programming of the
rolling code easier and faster . For some makes of garage door
op eners t he Homelink ® button may have to b e press ed a third time
to complete the teaching sequence. •
Applies to vehic le s: w it h Hom elink® univ ers al ra dio fr eque ncy remote c ontro l
Erasing the programming of the Homelink ®
universal remote control
When you erase the programming, the programming on
all three of the transmitter channels with be lost!
1. Set the parking brake.
2. Turn the ignition on. Do not start the engine!
3. Hold down both outside buttons
Ci) and @=> page 160,
fig. 161 simultaneously, until the diode begins to flash
(after about 20 seconds).
4. Release both buttons immediately. The programming on
all three transmitter channels is now erased.
.,_

Before driving off, always:
-Fasten your safety belt and make sure you are wearing it
properly.
- Make sure that your passengers also buckle up and prop­ erly wear their safety belts.
- Protect your children with a child restraint system appro-
priate for the size and age of the children.
The warning light {} in the instrument cluster lights up when the
ignition is switched on as a reminder to fasten the safety belts . In
addition, you will hear a warning sound.
After the ignition is switched on, the warning tone will come on for about 6 seconds a long with a{} warning light in the instrument
cluster if either the driver or (on USA models only) front seat
passenger has not fastened their safety belt. As soon as the driver
and front seat passenger have fastened the safety belt, the warning
tone will stop and the warning light will go out.
I f both the driver and front seat passenger have not buckled -up
within about 24 seconds after the warning tone has stopped, the
warning tone will sound again for about 6 seconds. The warning
tone will sound repeatedly for about 6 seconds at 24 second inter­
vals until both the driver and front passenger have buckled-up. The
safety belt warning system is active for about 5 minutes and during
this time the warning light in the instrument cluster will stay on .
Fasten your safety belt now and make sure that your passengers
also properly put on their safety belts.
•
Safety first
Safety belts
Why safety belts?
Frontal collisions and the law of physics
Frontal crashes create very strong forces for people riding
in vehicles.
"' "' 9 w
"' a,
Fig. 167 Unbelted
occupants in a vehicle
heading for a wall
Fig . 168 The vehicle
crashes into the wall
jlJ>
Technical data

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Child restraints on the front seat - some
important things to know
- Be sure to read the important information and head the
WARNINGS for important details about children and
Advanced
Airbags=> page 210.
Even though your vehicle is equipped with an Advanced Airbag
System, make certain that all children, especially those 12 years and
younger, always ride in the back seat properly restrained for their
age and size . The airbag on the passenger side makes the front seat
a potentially dangerous place for a child to ride. The front seat is not
the safest place for a child in a forward -facing child safety seat. It
can be a very dangerous place for an infant or a child in a rearward ­
facing seat.
The Advanced Airbag System in your vehicle has been certified to comply with the Requirements of United States Federal Motor
Vehicle Safety Standard 208 as applicable at the time your vehicle
was manufactured.
The Standard requires the front airbag on the passenger side to be
turned off ("suppressed") if a child up to about one year of age
restrained in one of the rear-facing or forward-facing infant
restraints listed in Federal Motor Vehicle Safety Standard 208 with
which the Advanced Airbag System in your vehicle was certified has been installed on the front passenger seat. For a listing of the child
restraints that were used to certify compliance with the US Safety
Standard ::::, page 212.
The PASSENGER AIR BAG OFF light in the instrument panel tells you
when the front Advanced Airbag on the passenger side has been
turned off by the electronic control unit.
Each time you turn on the ignition, the
PASSENGER AIR BAG OFF
light will come on for a few seconds and:
• will stay on if the front passenger seat is not occupied,
Controls and equip­
ment Safety first
Vehicle operation
• will stay on if there is a small child or child restraint on the front
passenger seat,
• will go off if the front passenger seat is occupied by an adult as
registered by the weight-sensing
mat ::::, page 198, "Monitoring the
Advanced Airbag System" .
The
PASSENGER AIR BAG OFF light comes on when the control unit
detects a total weight on the front passenger seat that requires the
front airbag to be turned off.
If the total weight on the front passenger seat is more than that of
a typical 1 year-old child but less than the weight of a small adult,
the front airbag on the passenger side can deploy (the
PASSENGER
AIR BAG OFF
light does not come on). If the PASSENGER AIR BAG
OFF
light does not come on, the front airbag on the passenger side
has not been turned off by the electronic control unit and can
deploy if the control unit senses an impact that meets the condi­
tions stored in its memory.
For example, the airbag may deploy if:
• a small child that is heavier than a typical 1 year-old child is on
the front passenger seat (regardless of whether the child is in one
of the child safety seats
listed ::::, page 212), or
• a child who has outgrown child restraints is on the front
passenger seat.
If the front passenger airbag is turned off, the
PASSENGER AIR BAG
OFF
light comes on in the instrument cluster and stays on.
The front airbag on the passenger side may
not deploy (the
PASSENGER AIR BAG OFF light does not illuminate and stay lit) even
if a small adult or teenager, or a passenger who is not sitting upright
with their back against a non-reclined backrest with their feet on the
vehicle floor in front of the seat is on the front passenger seat
=> page 168, "Proper seating position for the driver".
If the front passenger airbag deploys, the Federal Standard requires
the airbag to meet the "low risk" deployment criteria to reduce the risk of injury through interaction with the airbag . "Low risk" deploy­
ment occurs in those crashes that take place at lower decelerations _,,.
Vehicle care Do-it-yourself service Technical data

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as defi ne d i n th e el ectronic contro l unit=> page 19 9, " PA SSE NGER
AI R B AG OFF lig ht ".
A lways remember, a c hild safety s eat or infant carrier instal led on
the front seat may be struck and knocked out of po sition by the
r a pi dly i nfla ting passe nger's ai rbag in a fron tal c olli sion . The a irbag
co uld greatly red uce the effectiveness of the child restraint and
e ven se riou sly inju re the child d urin g infla tion .
F or th is reason, and because the bac k seat is the safest plac e for
chi ldr en
-whe n prop erly r estrain ed accord in g to t he ir age an d size
-we stro ngly recomme nd that ch il d ren a lwa ys sit in the bac k se at
=> p age 210, "Child S afety".
& WARNING
A child in a rearward -facing child safety seat installed on the front
passenger seat will be seriously injured and can be killed if the
front airbag inflates
-even with an Advanced Airbag System .
• The inflating airbag will hit the child safety seat or infant
carrier with great force and will smash the child safety seat and
child against the ba ckrest , center arm rest , door or roof .
• Always install rear-facing child safety seats on the rear seat .
• If you must install a rearward facing child safety seat on the
front passenger seat because of exceptional circumstances and
the PASSENGER AIR BAG OFF light does not come on and stay on ,
immediately install the rear-facing child safety seat in a rear
seating position and have the airbag system inspected by your
Audi dealer .
• Forward-facing child safety seats installed on the front
passenger's seat may interfere with the deployment of the airbag
and cause serious personal injury to the child .
& WARNING
If, in exceptional circumstances , you must install a forward-facing
child restraint on the front passenger's seat:
& WARNING (continued)
• Always make sure the forward-facing seat has been designed
and certified by its manufacturer for use on a front seat with a
passenger front and side airbag .
• Never put the forward-facing child restraint up against or very
near the instrument panel.
• Always move the passenger seat into its rearmost position in
the seat's fore and aft adjustment range, as far away from the
airbag as possible before installing the forward-facing child
restraint. The backrest must be adjusted to an upright position.
• Make sure that the PASSENGER AIR BAG OFF light comes on
and stays on all the time whenever the ignition is switched on.
& WARNING
To reduce the risk of serious injury , make sure that the PASSENGER
AIR BAG OFF light will be displayed whenever a child restraint is
installed on the front passenger seat and the ignition is switched
on.
• If the PASSENGER AIR BAG OFF light does not stay on, perform
the checks
described => page 198, "Monitoring the Advanced
Airbag System" .
• Take the child restraint off the front passenger seat and install
it properly at one of the rear seat positions if the PASSENGER AIR
BAG OFF light does not stay on.
• Have the airbag system inspected by your Audi dealer immedi ­
ately .
• Always carefully follow instructions from child restraint manu ­
facturers when installing child restraints .
& WARNING
If, in exceptional circumstances, you must install a forward or
rearward -facing child restraint on the front passenger's seat :

Airbag system 111111
-----------------------------=--=-------
It is important to remember that while the supplemental airbag
system is designed to reduce the likelihood of serious injuries, other
injuries, for example swelling, bruising and minor abrasions, can
also happen when airbags inflate. Airbags do not protect the arms
or the lower parts of the body. Front airbags only supplement the
three point safety belts in some frontal collisions in which the
vehicle deceleration is high enough to deploy the airbags.
Front airbags
will not deploy:
• if the ignition is switched off when a crash occurs,
• in side collisions,
• in rear -end collisions,
• in rollovers ,
• when the crash deceleration measured by the airbag system is
less than the minimum threshold needed for airbag deployment as
registered by the electronic control unit.
The front passenger airbag
will also not deploy:
• when the front passenger seat is not occupied,
• when the weight on the front passenger seat as sensed by the
Advanced Airbag System indicates that the front airbag on the
passenger side has to be turned off by the electronic control unit
(the PASSENGER AIR BAG OFF light comes on and stays onl.
& WARNING
Sitting in the wrong position can increase the risk of serious injury
in crashes.
• To reduce the risk of injury when the airbags inflate, the driver
and passengers must always sit in an upright position, must not
lean against or place any part of their body too close to the area
where the airbags are located.
• Occupants who are unbelted, out of position or too close to the
airbag can be seriously injured by an airbag as it unfolds with
great force in the blink of an
eye :::::, page 189.
Controls and equip­ ment Safety first
Vehicle operation
& WARNING
A child in a rearward-facing child safety seat installed on the front
passenger seat will be seriously injured and can be killed if the
front airbag inflates
-even with an Advanced Airbag System.
• The inflating airbag will hit the child safety seat or infant
carrier with great force and will smash the child safety seat and
child against the backrest, center arm rest, door or roof.
• Always install rear-facing child safety seats on the rear seat.
• If you must install a rearward facing child safety seat on the
front passenger seat because of exceptional circumstances and
the PASSENGER AIR BAG OFF light does not come on and stay on, immediately install the rear-facing child safety seat in a rear
seating position and have the airbag system inspected by your
Audi dealer .
& WARNING
Objects between you and the airbag will increase the risk of injury
in a crash by interfering with the way the airbag unfolds or by
being pushed into you as the airbag inflates .
• Never hold things in your hands or on your lap when the vehicle
is in use.
• Never transport items on or in the area of the front passenger
seat. Objects could move into the area of the front airbags during
braking or other sudden maneuver and become dangerous projec ­
tiles that can cause serious personal injury if the airbags inflate.
• Never place or attach accessories or other objects (such as cup
holders, telephone brackets, large, heavy or bulky objects) on the
doors, over or near the area marked "AIRBAG" on the steering
wheel, instrument panel, seat backrests or between those areas
and yourself. These objects could cause injury in a crash, espe­
cially when the airbags inflate.
• Never recline the front passenger's seat to transport objects.
Items can also move into the area of the side airbag or the front _,,
Vehicle care Do-it-yourself service Technical data

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&, WARNING (continued )
airbag during braking or in a sudden maneuver . Objects near the
airbags can become projectiles and cause injury , particularly when
the seat is re clined .
& WARNING
The fine dust created when airbags deploy can cause breathing
problems for people with a history of asthma or other breathing
c ondit ions .
• To reduce the risk of breathing problems , those with asthma or
other respiratory conditions should get fresh air right away by
getting out of the vehicle or opening windows or doors .
• If you are in a collision in which airbags deploy, wash your
hands and face with mild soap and water before eating .
• Be careful not to get the dust into your eyes, or into any cuts or
scratches.
• If the residue should get into your eyes, flush them with
water. •
Monitoring the Advanced Airbag
System
Airbag monitoring indicator light t~
Two separate indicators monitor the func tion of the
Advanced A irba g System: th e airbag mon itoring ind ica tor
li g ht and the
PASSENGER AIR BAG OFF light.
T he Advanced Airbag System (inc luding the e lectronic control unit,
s en sor c ircuit s and s yste m wiri ng ) is moni tored con tin uou sly to
make sure that it is f unctioning properly whenever the ignition is o n.
E ac h time you t urn on the ignit ion , th e airb ag monito ring indic ator
light ~ will come on for a f ew s econds (s elf dia gnostics).
The system must be inspected when the indicator
light m:
• does not come on when the i gnition is switched on,
• d oes not go out a few sec onds after y ou h ave sw itch ed on th e
ignit ion, or
• comes on w hile d riv ing.
I f an airbag system malfunction is detected, the indicator li ght will
fir st sta rt fl ashing to ca tch the drive r's att ention a nd then s tay o n
cont inuously to serve as a cons tant rem inder to hav e the s yst em
in spec ted i mm ediatel y.
If a m alfu nctio n occ urs th at t urns the fron t airb ag on the pass eng er
s ide off, the PASSENGER AIR BAG OFF light will come on and stay on
w hen eve r th e ig niti on is on.
& WARNING
An airbag system that is not functioning properly cannot provide
supplemental protection in a frontal crash .
• If the airbag indicator light comes on , it means that there may
be something wrong with the Advanced Airbag System. It is
possible that the airbag will inflate when it is not supposed to , or
will not inflate when it should .
• Have the airbag system inspected immediately by your Audi
dealer .•

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PASSENGER AIR BAG OFF light
N
-M -J., a, cc
Fi g. 18 0 Sec tion fr om
t h e i nstr um ent pa nel:
P ASSE NG ER AI R BA G
OFF lig ht
The PASSENGER AIR BAG OFF light is located in the center o f the
ins trumen t panel
=> fig . 180 .
The PASSENGER AIR BAG OFF light wil l come on and stay on to te ll
you when the front Advanced Airbag on the passenger side has been turned off by the electronic control unit. Each time you turn on
the ign it ion, the
PA SS ENGER AIR BA G OFF light wi ll fl as h for a few
seconds and :
• will stay on if t he front passenger seat is not occupied,
• will stay on if there is a small child or chi ld restraint on the front
passenger seat,
• will go out if the front passenger seat is occupied by an adult as
registered by the we ight -sens ing mat.
The
PA SS ENGER AIR B AG OFF light mu st come on and stay on if the
ignition is on and
• a car bed has been instal led on the front seat, or
• a rearward -facing chi ld restraint has been installed on the front
passengerseat,or
Controls and equip­ ment Safety first
Vehicle operation
• a forward -facing child restraint has been instal led on the front
passenger seat, or
• the weight register ed on the front passenger seat is equa l to or
less than the combined weigh t of a typica l 1 year-old restrained in
one of the rear -facing or forward -facing infant restraints listed in
Federa l Motor Veh ic le Safe ty S tandard
208 with wh ich the Advanced
Airbag System in your vehicle was certified .
If the front passenger seat is not occupied, the front airbag will not
dep loy, and the
PA SS ENGER AIR BAG OFF light will stay on . Never
insta ll a rearward -facing child restraint on the front passenger seat,
the safest place for a child in any kind of ch ild restraint is at one of
the seating positions on the rear
seat => page 189, "Ch ild restraints
on the front sea t-some important things to know"
and => page 210,
"Chi ld Safety" .
If the PASSENGER AIR BAG OFF light comes on when one of the
condit ions listed above is met , be sure to check the light regu lar ly
to make certain that the
PA SSENGER AIR BAG OFF light stays on
cont inuously whenever the ignition is on . If the PASSENGER AIR
BAG OFF light does not appear and not stay on all the time , stop as
soon as it is safe to do so and
• reactivate the system by turning the ignition off and then turning
it on again;
• remove and reinstall the ch ild restraint. Make sure that the child
res tra int is proper ly instal led and t hat t he sa fety be lt for the front
passenger seat has been correctly routed around the child restraint
as described in the chi ld restraint manufacturer's instructions;
• make sure that the convertible locking feature on the safety belt
for the front passenger seat has been activated a nd that the safety
belt has been pulled t ight . The belt must not be loose or have loops
of slack so t hat t he sensor below t he safety belt latch on the seat can
do its job
=> page 220.
• make s ure that th ings that may inc rease the we ight of the child
and child safety seat are not being transported on the front
passenger seat;
Vehicle care Do-it-yourself service Technical data

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• make sure that the safety belt tension sensor is not blocked.
Shake the safety belt latch on the front passenger seat back and
forth;
• If a strap or tether is being used to tie the child safety seat to the
front passenger seat, make sure that it is not so tight that it causes
the weight -sensing mat to measure more weight than is actually on
the seat.
If the PASSENGER AIR BAG OFF light still does not come on and does
not stay on continuously (when the ignition is switched on),
• take the child restraint off the front passenger seat and install it
properly at one of the rear seat positions. Have the airbag system
inspec ted by your Audi dealer immediately .
• move the child to a rear seat position and make sure that the
child is properly restrained in a child restraint that is appropriate for
its size and age.
The
PASSENGER AIR BAG OFF light should NOT come on when the
ignition is on and an adult is sitting in a proper seating position on
the front passenger seat. If the
PASSENGER AIR BAG OFF light
comes on and stays on or flashes for about 5 seconds while driving,
under these circumstances, make sure that:
• the adult on the front passenger seat is properly seated on the
center of the seat cushion with his or her back up against the back ­
rest and the backrest is not
reclined~ page 168, "Proper occupant
seating positions",
• the adult is not taking weight off the seat by holding on to the
passenger assist handle above the front passenger door or
supporting their weight on the armrest,
• the safety belt is being properly worn and that there is not a lot
of slack in the safety belt webbing,
• accessory seat covers or cushions or other things that may cause
an incorrect reading or impression on the weight-sensing mat
under the upholstery of the seat have been removed from the front
passenger seat, •
a safety belt extender has not been left in the safety belt latch for
the front passenger seat.
In addition to the
PASSENGER AIR BAG OFF light in the center of the
instrument panel, the message
PASSENGER AIR BAG OFF or
PASSENGER AIR BAG ON will briefly appear in the instrument cluster
display. This is to inform the driver of the current front passenger
airbag status. •
Important safety instructions on monitoring
the Advanced Airbag System
& WARNING
An airbag system that is not functioning properly cannot provide
supplemental protection in a frontal crash.
• If the airbag indicator light comes on, it means that there may
be something wrong with the Advanced Airbag System. It is
possible that the airbag will inflate when it is not supposed to, or
will not inflate when it should.
• Have the airbag system inspected immediately by your Audi
dealer.
& WARNING
If the front airbag inflates, a child without a child restraint, in a
rearward-facing child safety seat or
in a forward-facing child
restraint that has not been properly installed will be seriously
injured and can be killed .
• Even though your vehicle is equipped with an Advanced Airbag
System, make certain that all children, especially 12 years and
younger, always ride on the back seat properly restrained for their age and size .
• Always install forward or rear-facing child safety seats on the
rear seat -even with an Advanced Airbag System.
.,_

& WARNING (continued)
• If you must install a rearward-facing child safety seat on the
front passenger seat because of exceptional circumstances and
the PASSENGER AIR BAG OFF light does not appear and stay on ,
immediately install the rear -facing child safety seat in a rear
seating posit ion and have the airbag system inspected by your
Audi dealer .
• A tight tether or other strap on a rearward-facing child restraint
attached to the front passenger seat can put too much pressure
on the weight-sensing mat in the seat and register more weight
than is actually on the seat. The heavier weight registered can make the system work as though an adult were on the seat and
deploy the Advanced Airbag when it must be suppressed causing
serious or even fatal injury to the child.
• If , in exceptional circumstances , you must install a forward ­
facing child restraint on the front passenger seat , always move the
seat into its rearmost position in the seat 's fore and aft adjust­
ment range , as far away from the airbag as possible. The backrest
must be adjusted to an upright position . Make sure that the
PASSENGER AIR BAG OFF light comes on and stays on all the time
whenever the ignition is switched on .
& WARNING
• If the PASSENGER AIR BAG OFF light does not go out when an
adult is sitting on the front passenger seat after taking the steps
described above , make sure the adult is properly seated and
restrained at one of the rear seating positions .
• Have the airbag system inspected by your Audi dealer before
transporting anyone on the front passenger seat .
Controls and equip­ ment Safety first
Vehicle operation
Airbag system
[ i ] Tips
If the w eig ht-sens ing ma t in th e front passe nger seat detects an
e m pty seat , the front airbag on the pa ssenge r side wil l be turned
o ff , a nd PASSENGER AIR BAG OFF will stay o n.
a
Repair, care and disposal of the airbags
Pa rts o f the airba g sy ste m are i nsta lled at many d ifferen t pl aces on
y our Audi. Instal ling, removing , se rvicing or re pairing a pa rt in an
ar ea of th e ve hicle ca n da mage a part of an airbag syst em and
prevent that system from wor king properly in a co llision.
T he re a re so me impo rtant thin gs you have to know t o make sure
that the effectiv eness of the system will not be impaired and that
di scar ded co mpon ents do not ca use inju ry o r po llut e th e env iron­
m ent .
& WARNING
Improper care , servicing and repair pro cedures can increase the
risk of personal injury and death by preventing an airbag from
deploying when needed or deploying an airbag unexpectedly :
• Never cover, obstruct, or change the steering wheel horn pad
or airbag cover or the instrument panel or modify them in any way.
• Never attach any objects such as cup holders or telephone
mountings to the surfaces covering the airbag units .
• For cleaning the horn pad or instrument panel , use only a soft ,
dry cloth or one moistened with plain water . Solvents or cleaners
could damage the airbag cover or change the stiffness or strength
of the material so that the airbag cannot deploy and protect prop ­
erly .
• Never repair , adjust , or change any parts of the airbag system.
• All work on the steering wheel, instrument panel, front seats or
electrical system (including the installation of audio equipment ,
...,
Vehicle care Do-it-yourself service Technical data