immobilizer AUDI A4 AVANT 2008 Owners Manual

Instruments and warning /indi cator lights
M alfun ction message
I f there is a malfunction somewhere in the inst rument cluster, dEF
wi ll appear in the trip odometer and will stay on . Contact your
authorized Audi dealer to have the prob lem corrected. •
Electronic immobilizer SAFE
Trying to start the vehicle with a non -a u thorized or a
defective key will ac tivate the electronic immobilize r.
miles
52YY
Fig. 6 Odom eter
di spl ay in the spe ed ­
o me ter: electroni c
immobilizer activat ed
Each time you swi tch on the igni tion, the data stored in the vehicle
key a re e lectronical ly scanned to verify that key data and vehicle
da ta ma tch .
I f a non-coded or a defective vehicle key is used , the word SAFE will
appear and remain lit in the uppe r (trip) odo meter display . If this
happens, the vehicle cannot be started
=> page 54 . •
Fuel gauge
The fuel gauge works only when the ignition is on . When the need
le reaches the red area , the warning light in the
instr ument cl uster will
il lu mi nate ::::> page 34 . This means yo u
have approximate ly 2 .4 ga llons (9 liters) of fue l left in the tank .
Time
to refuel!
The tota l tank capacity of your veh ic le is listed in => page 343,
"Data". Be aware of the different tank capacit ies of front -wheel and
quattro ® all -wheel drive models.
0 Note
Never run the tank completely dry! An i rregular supply of fuel can
cause engine misfir ing and fuel could ent er into th e exhaust
sys tem . The catalytic conver te r could then overheat and be
damaged .•
CHECK button
F ig . 7 CHE CK button i n
the in strument clu ster
The CHECK button performs the fol lowing functions :

Opening and clo sing
Master key battery replacement
Each master key contains a battery housed under the
cover.
F ig. 48 Mas ter key:
o p enin g the cover
We recommend having the battery changed by an autho­
rized dealership. However, if you wish to replace the dead
battery yourself, proceed as follows:
- Pry apart the
base~ fig. 48 @ and the cover ® car efully
with a coin .
- Remove the cover (arrow).
- Remove the dead battery from the cover .
- Install the new battery. Please make certain t hat the"+"
sign on the battery faces down . Correct polarity is shown
on the cover.
- Place the cover w ith the new battery on the key base and
press both parts together.
ffi For the sake of the environment
Dispose of dead batteries properly so as not to pollute the environ­
ment .
[ i ] Tip s
The replacement battery must be the same specification as the
original. •
Electronic immobilizer
The immobilizer prevents y our vehicle from being started
b y u nau thor ized pers ons.
Inside the key head there is a computer ch ip. Th is ch ip automatically
deactivates the e lectronic immobilizer when you insert the key in
the ignit ion lock. When you remove the key from t he ignition lock,
the electron ic immobili zer is automatical ly activated once again .
[ i ] Tips
• Your engine can only be started using the factory -equipped key
=> page 16.
• You may not be able to start your vehicle if an ignition key of a
different vehicle make is also located on your set of keys. •

___________________________________________ C_ h_e _c_ k_ i_n ~g _ a_n _d_ f_il _li _n ~g __ _
& WARNING (continued)
-The brake fluid must be new. Heavy use of the brakes can
cause a vapor lock if the brake fluid is left in the system too
long. This can seriously affect the efficiency of the brakes as
well as your safety. This could result in an accident.
0 Note
Brake fluid will damage the paint of your vehicle.
W For the sake of the environment
Because of the problem of proper disposal of brake fluid as well as
the special tools required and the necessary expertise, we recom­
mend that you have the brake fluid changed by your authorized Audi
dealer. •
Battery
General information
Under normal operating conditions, the battery in your Audi does
not need any maintenance. With
high outside temperatures it is
advisable however to check the fluid level at regular intervals
through the transparent battery housing. Also check the fluid level
each time you charge the battery. After charging the battery
~ page 289, you should likewise check the battery acid level.
Have the battery checked when you take your vehicle in for service.
You are well advised to replace a battery that is older than 5 years.
Preserving battery charge on a vehicle not operated
for a long time
Some components of the electrical equipment (for example, the
electronic immobilizer) will keep drawing a low current even when the car is
not running
. This will eventually drain the battery
completely if your vehicle is left sitting for a long period of time
without being driven . To prevent this, either charge the battery
occasionally or disconnect the battery negative (ground) cable.
Winter operation
During the winter months, battery capacity tends to decrease as
temperatures drop . This is because more power is also consumed
while starting, and the headlights, rear window defogger, etc., are
used more often.
Avoid unnecessary power consumpt ion, particularly in city traff ic or
when traveling only short distances. Let your authorized Audi dealer
check the capacity of the vehicle battery before winter sets in
~ page 289. A well charged battery will not only prevent starting
problems when the weather is cold, but will also last longer.
[ i] Tips
If your vehicle is left standing for several weeks at extremely low
temperatures, the vehicle battery should be removed and stored
where it will not freeze. This will prevent it from being damaged and
having to be replaced. •
Location of the vehicle battery
The vehicle battery is located in the plenum chamber at the back of
the engine
compartment~ page 275.
The positive(+) battery terminal is protected by a plastic cover. This cover must be removed to access to the positive(+) terminal when
connecting jumper cables to start the engine .
& WARNING
Before you check anything in the engine compartment, always
read and heed all WARNINGS
~ & in "Working in the engine
compartment" on
page 273. •
Vehicle care

111'1_....::::A::.:l:.!: p :.:h..:.: a:::.:: b:.::e :.:t::i c::.::: a.:..l ..:.: in :..:.:: d:.:e :.:x::..... ___________________________________________ _
A
ABS (Anti- lock Brake System)
Warning/indicator lights ... .... .... 21
Accessories . .... .... .... .... .... ... 348
acoust ic park assist . . . . . . . . . . . . . . . . . 139
Adap tive light .. ... .... ... .. ...... ... 75
defective . . . . . . . . . . . . . . . . . . . . . . . . 35
Adding Engine coo lant
282
Engine oi l ... ... .. .... .... ... .... 278
Windshield washer fluid .... .... .. 291
Additiona l accessories .. ...... ...... . 348
Additives Eng ine oi l .. ....... ....... ....... 278
Adjustable steering whee l column .. ... 134
Adjusting Instrument cluster il lumina tion ... .. . 15
Steering wheel co lumn . ...... .... 134
Advanced A irbag System . .... ... .... 191
Ch ildren ... ........... .... ... ... 211
Components ...... .... ... .... ... 194
Fr ont airbags . . . . . . . . . . . . . . . . . . . . 192
How the c ompone nts wo rk togethe r 195
Monitoring . . . . . . . . . . . . . . . . . . . . . . 198
PASSE NGER AIR BAG O FF light ..... 199
Weight -sensing mat ....... ... .... 211
Air conditioner . . . . . . . . . . . . . . . . . . . . . 128
See also Climate controls . . . . . . . . . . 125
Air conditioning Switching on and off 128
A ir distribution
C limate controls . ...... ... .... ... 130 Air outlets
Adjusting the outlets for rapid defrosting/de fogging .. ...... .... 131
Cl imate con trols ...... .... .... ... 131
Air quality sensor . . . . . . . . . . . . . . . . . . . 129
Air recirculation .. ... .... .... .... ... 128
Clima te controls .. .... ..... .. .... 129
When should I use the air recircu lation?
129
Airbag Warning/indicator lights .... ... .... 20
Airbag system . . . . . . . . . . . . . . . . . . 187 , 205
Car e ...... .... .... .... .... .... .. 201
Child restraints .... .... .... .... .. 212
Componen ts (front airbags) .... ... . 194
Danger of fitting a chi ld safety seat on the
front passenger seat . . . . . . . . . . . . 189
Disposal .. ....... .... .... .... ... 201
Front airbags . .... ... .... .... .... 191
How do the front
ai rbags work? .... 196
How many airbags does my vehicle have? 194
I mportant things to know ....... .. 1 87
I ndicator light ... .. .... .... ... ... 198
Monitoring . . . . . . . . . . . . . . . . . . . . . . 198
Repairs ...... .... ... .... .... .... 201
Side airbags ... ...... .... ... .. ... 203
Side curtain airbags (SIDEGUARD) .. 207
When must the sys tem be inspec ted? ...
198
Alloy w heels . .... .... .... .... .... .. 260
All -wh ee l driv e 242
Winter tir es ..... .... .... ... .. ... 310 A
lternator
See Generator . . . . . . . . . . . . . . . . . . . . 22
Aluminum al loy wheels . ...... .... ... 260
Ambient light ing . ....... .... ... .. .... 82
Anti-free ze
See Engine coolant system ........ 280
Anti -glare inside day -ni ght mi rro r .. ... . 90
An ti- lock B rake System (ABS)
How the ABS system works . ....... 240
Warning/indicator l ights ........... . 21
Anti -Slip R egulation Syst em (ASR)
How the sys tem works .... .... .... 238
An ti- theft systems
Anti -theft ala rm system .. ...... .... 64
Electronic immobilizer .. ... .... ... . 5 4
Tilt sensors . .... .... ... .... .... ... 65
Armrest Adjusting ...... .... ... .... ..... . 102
Storage bi n
Ashtray 1
02
Front . .... .... .... .... ... .... ... 119
Rear ...... .... .... .... ... .... ... 119
ASR Anti- Slip Regulation System .... ... 238
Asterisk What does it mean when something is marked with an asterisk? .. ... .... .. 6
Attachment hooks ... .... .... .... ... 112
Aud i Service Repa ir Manuals and Lite rature
346

Alphabetical index -
-------------=----
Convertible child seats
How do I properly ins ta ll a conve rtible
child seat in my vehicle? ......... 216
Safety instructions . ...... ...... .. 216
Convertible locking retractor
Act ivating .. .. .... .... ........... 222
Deactivating ...... .... ........... 223
Using to secure a child safety seat 220,
222
Coolant system ... .. .... .... ........ 280
Coo ling System
Expansion tank .... ....... ... .... . 281
Cornering light .. .... .... ...... .... .. 75
Cruise control . ...... .... ........... 140
Changing a stored speed .... ... .. . 140
Setting and storing a vehic le speed . 140
Switching off . ........... .... .... 141
Switching off temporari ly .......... 141
Switching on .... .... .... .... .... 140
Warning/indicator lights .. ... .... ... 21
Cruising range .................. ..... 40
Cup holder ......................... 118
D
Data .............................. 343
Data recorder ... .... .... .... ..... .. . 236
Date display ......................... 14
D aytime running lights ................ 74
dEF indication .............. ......... 15
Defogging the windows .. .... .... .... 131
Defrosting the windows ...... .... .... 131
Defrosting /defogging windows .. .... .. 131
Controls and equip­
ment Safety first
Determining
correct load limit ..... .. . 302 Dynamic shift program ... .... ...... .. 153
Digita l clock .. ...... ..... .. .... .... .. 14
Setting the time ..... ...... .... .... 14
E
Digita l compass ...................... 93
Dimensions . ....... ... .. .... .... ... 341
Dipstick Location .... .... ... .. .... .... ... 277
Doors, power locks .. ...... ....... .... 58
Drive Information System Help .. ...... .... ... .. .... .... .... 43
Driver
See Seating position ........... ... 168
Driver information display ....... .... .. 24
Mi les (ki lometers) to empty .... ... .. 26
Open door or rear lid warning .. .... . 26
Outside
temperatu ire disp lay ....... . 25 ECON
When should I use ECON? ...... ... . 128
EDL Electronic differential lock .... .... . 237
Ele ctrically heated front seats ..... ... . 132
Electronic differential lock
Warning/indicator lights ...... .... .. 21
Electronic differential lock (EDU
How the system works ............ 237
Elect ronic immobilizer . ... .... .... .... 16
Electronic power contro l
EPC warning/indicator light ....... .. 23
Parking brake warning .. .... ... .. .. 29 Electronic stabilization program
(ESP)
Sound system display
...... .... .... 25 How
the system works ............ 236
Text messages .. ....... ...... .... . 29 Warning/indicator
lights ...... ...... 22
Driver Informa tion System Emergency
closing
Menu display .. ... .... .... .... ... . 41 Power sunroof ...
.... ........... .. 69
Practical example .................. 44 Emergency
flasher .. ... .... .... ...... 79
Setting .. .... ....... ...... .... .... 43 Warning/indicator
lights ...... ...... 22
Types of disp lay ..... ...... ... .... . 42 Emergency
locking ................... 61
Driver's seat memory ................ 100 Emergency
starting ... .... ... .... .... 330
Assigning the keys ....... ... .. .... 102
Emergency towing .................. 332
Recalling a seat position .. .... .... . 101
Emergency un locking (on ly manually)
Storing a seat position ............ 101
Rear lid . ... .. .... .... ...... .... .. 62
Driver's seat cushion extension ...... .. 100
Engine
Driving messages .... .... .... .... .... 29
4-cylinder (200 hp) ...... .. .... .... 274
Driving safely ....... ... .. .... .... ... 166 6-cylinder (255
hp) ................ 275
Driving time ... .. ...... .... ... .. .... . 40 Coolant
......................... 280
Dup licate key .... .... .... ...... ... .. . 52 Hood ......
...... .... ...... ..... 272
Vehicle operation Vehicle care Do-it-yourself service Technical data

-Alphabetical index
---=------------------------------------------------
I
Ignition key 135
Ignition lock ... ... .. .... .... ...... . 135
Electronic immobiliz er ..... ........ 54
Ignition lock posit ions .... .... ...... . 135
167
185
Impor
tant things to do before driving ..
Improperly worn safety belts
Ind icator light
Airbag system . . . . . . . . . . . . . . . 198 , 199
PASSENGER AIR BAG OFF ......... 199
Indica tor lights . . . . . . . . . . . . . . . . . . . 12, 19
Infant seats . . . . . . . . . . . . . . . . . . . . . . . . 215
How do I properly install an infa nt seat in
my vehicle? .............. ...... 215
Safety instructions . . . . . . . . . . . . . . . 215
Ins ide rear view mirror .... ....... .... . 90
Installing child safety seats
Safety belts . . . . . . . . . . . . . . . . . . . . . 220
Inst rument cluster il lum ination ........ 15
In strument panel
Illum ination ...... ........ ... .... . 78
Inst rument panel and controls .. ....... 12
Ins truments and controls
Genera l ill ustration .... ....... .... . 11
In terior lights ....................... 81
Ambient lighting .................. 82
Luggage compartment ............. 83
Rear ............................ 82
J
Jack and tools . . . . . . . . . . . . . . . . . . . . . . 316 Jumper cables
.......... .... .... .... 331
Jump -starting 330
K
Key ...... ..... .. ...... .... ... .. .... 52
Battery replacement . . . . . . . . . . . . . . . 54
Coded settings .. .... ....... ..... 132
Convenience opening and closing of windows ... .... ... .. .... .... ... 59
Emergency key . . . . . . . . . . . . . . . . . . . 52
Key replacement . . . . . . . . . . . . . . . . . . 52
Master key .......... ...... .... ... 52
Valet key . . . . . . . . . . . . . . . . . . . . . . . . . 52
Key-coded settings Climate controls .. ........ ....... 132
Keyl ess entry remote control
Keys 53, 56
Electronic immobilizer ...... .... ... 16
Kick-down ...... ....... ...... .. 146, 153
L
LATCH ............................ 225
Description ...................... 225
Guidance fixtures for lower anchorages .
226
Ins talling a child restraint .. .. .. ... 228
Location ......... .... .... .... ... 225
Mounting and re leasing the anchorage
hook .. ...... ...... .... ... .. ... 229
Leather ..... .. ...... ... .. .... .... .. 262
Cleaning ........................ 263
Le aving -home-function ............... 77 Lifting jack
......... .... .... .... .... 321
Lifting points ...... ...... ... .. .... .. 336
Lifting/raising the vehic le ............ 335
Light sensor defective ................ 34
Light sensor package
Automatic headlight contro l .. .. ... . 73
Lights Coming-home/leaving-home-function 77
Emergency flasher ................ 79
Front fog lights ............... .... 76
Headlights ....................... 72
High beam ..... .. .... .... .... . 72, 80
High beam warning/indicator light .. . 23
Instrument pane l il lumination . ...... 78
Rear fog lights ..... ............... 76
Side marker lights ................. 72
Turn signals ...................... 80
Xenon headlights ...... ..... .. .... 79
Loading the luggage compartment ... . 173
Loading the roof rack .. ....... .... ... 117
Locking Power locking switch .............. 59
Rear lid .......................... 61
Remote control . . . . . . . . . . . . . . . . . . . 56
Using the key .. .... .... ..... .. .... 58
Lower anchorage locator button ...... 225
Luggage Stowing ........................ 173
Luggage compartment Attachment hooks . ........ .... ... 112
Cargo net .... .... .... ........... 108
Fastening eyes ................... 108
Light ............................ 83

Alph ab eti ca l ind ex 11111
----------------------------------------- -'------------J
Tire specifications .... ...... .... .. 306
Tread depth .. .... .... ........... 303
Uniform tire quality grading .. .... . 309
Winter tires .. .. .. .... .... ...... .. 310
Tires and vehicle load limits .. ... .... . 301
Tires and wheels Checking tire pressure ... .. ...... . 299
Co ld ti re inflati on pressure ... .. .... 297
Dimens ions ...... .... ... .... .... 305
Genera l notes ..... .... ... .... .... 293
G lossary of tire and loading terminology
294
New tires and whee ls ... .. ..... .. . 305
Replaci ng . ...... .... .... ... .... . 306
Snow chains ... .. .... .... .... .... 311
Tire pressu re monito ring system .. . 307
Tires and vehicle load limits .. ...... 301
Wheel bo lts .. .... .... ... .... .... 311
Winter tires .. .. .. .... .... ...... .. 310
Tires/Wheels Lowaspectrat iotires ..... ... .... . 312
Tire pressure monitoring sys tem . ... 20
T orn or frayed safety belts . ... .... .... 180
Touch -up paint .. .... .... ... .... .... 258
Towing Tow truck procedures
Tow line eye 332
front ...... ... .. .... .... .... .... 333
Trailer towing ... .... .... .... .... ... 248
Operating instructions .... ...... .. 249
Technical requirements ... .... 248, 249
Trailer towing tips ..... .. ...... ... 250
Controls and equip­
ment Safety first
Transmission
Vehicle identification ...... .... .... .. 340
6 -speed ... ...... ... .. .... .... ... 142
Vehic le identificati on label . ....... ... . 340
Manual transmission .............. 142
Vehic le Identification Number (V IN) ... . 340
tiptron ic® .......... ...... .... ... 143
Vehicle jack .. .... .... .......... 316, 32 1
Transport Canada ... .... .... .... .... 345
Vehicle l iterature ...... ... .... .... .... . 5
Tread Wear Ind icator (TWll . ....... .. . 303
Vehicle-care products .... .... .... .... 254
Trip computer
Complete -trip memory ............ . 38
Fuel consumption rate ...... .. .... . 38
w
Mi leage .. .... .... .... .... .... ... . 38
Warning lights ... .... .... ...... ... 12, 19
Si ngle -trip memory . ...... .... .... . 38
Warning/i ndicator lights
Trip odometer ... ...... .... ... .. .... . 15
Airbag system .... .... .... ..... .. . 20
dEF indication in the trip odometer
Anti-lock Brake System (ABS) ... .... . 21
display ... .. .... .... .... ... .... . 15
Brake system ..................... 23
Turn s ignals ......................... 80
Cruise control ... .. .... ...... ...... 21
Warning/ind ica tor lights ............ 22
Electronic immobilizer ...... .. ..... 16
Electronic power control ... .... ..... 23
u Electron ic stabil ization program (ESP) 22
Generator ........................ 22
Undercoating ....... ... .. .... .... ... 261
High beam . ....... ... .... .... .... 23
Unfastening safety belts . .... .... .... 18 4
Malfunction Indicator La mp (M IU .... 20
Un idirectiona l tires . .... .... ...... ... 293 Park ing brake .. ...... .... .... ... .. 23
Uniform tire quality grading .. ... .... . 309 Safety belt ..
...... .... .... .... .... 22
U nlocking Tire pressure monitoring system ...
.. 20
Power locking switch ... .. .... .... . 59 Turn signals
...... .... .... .... .... 22
Rear lid ...... .... .... .... ... .... . 61 Warranty coverages .
.... .... .... .... 345
Remote control ................... 56 Washer reservoir .. .... ... .... .... ... 291
Using the key . ............ .... .... 58
Washing .. ...... .... .... ... .... .... 254
Automatic car wash . ...... .... ... . 255
V by hand ...... .... .... ... .... .... 255
with a power washer ... ... .... .... 256
Vanity mirror .... ............. ...... . 84
Washing the vehicle .. .... .... .... ... 254
Veh ic le e lec trical system ... .. .... .... . 22
Washing the vehicle by hand .......... 255
Vehicle operation Vehicle care Do-it-yourself service Technical data