2008 AUDI A4 AVANT snow chains

-select Whe el ch ange in the Tir e pr ess ure menu.
Programming is necessary:
• aft e r rotating th e wh eels on the vehicle,
• if whee ls with new wheel sensors are used .
Your tire change is incomplet e if you do no t access the Driver Infor­
mation System menu, and select and confirm
Wh eel ch ang e. You
mus t do this each time to change a tire. The procedure can take up
to 20 minutes driving time. During this time, the sensors are read ­
justing to the new wheel/tire combination, and the new pressures are stored .
During the learning phase, the tire pressure monitoring system is
not availabl e.•
App lies to veh ic les: w ith tir e p ressure monitor in g sys tern
Malfunctions
A ma/function can have various causes.
F ig . 44 D isplay:
Syste m malfun ction
If the warning light in the instrument cluster flashes for approxi­
mately one minute and then remains continuously illuminated and
Controls and equip ­
ment
Dri ver inf orma tio n di spl ay
additional ly the => fig. 44 symbol appears in the display, the
tire pressure monitoring system is not available . This can have
various causes.
• If the message appears at the end of the learning phase, the
system cannot recognize the wheels insta lled on the vehicle . This
can be because one or more wheels without a wheel sensor were
installed .
• A wheel sensor or other component may have failed.
• The system has detected more than 4 wheels in the vehicle, for
example while driving beneath another car with tire pressure moni ­
toring system .
• A tire was changed but
the => page 50, "Changing a wheel"
procedure was not activated
=> page 50.
• Audi replacement parts were not used .
• If snow chains are being used , system function can be compro ­
mised due to the shie lding properties of the chains .
• The tire pressure monitoring system may not be available
because of a radio malfunction .
• Transmitters with the same frequency , such as radio head ­
phones in the vehicle or radio equipment, can cause a temporary
dis ruption of the system through excessive el ectromagn etic fie lds.
• Try to find the cause of the interference, and then perform the
=> page 50, "Changing a wheel" procedure one more time . If this not
e liminate the prob lem , contact your authorized Audi dea ler for
assistance .
• Do not use commercially available tire sealants. Otherwise , the
electrica l components of the tire pressure monitoring system will
no longer work properly and the sensor for the tire pressure moni­
toring system will have to be replac ed by a qualified workshop. •
Technical data

On the ro ad 11111 ---------------------------------------------------------------~
acoustic park assist
A pplies to vehicles : with 4 -c h an nel a cou sti c par k ass is t
Rear acoustic park assist
The rear acoustic park assist warns you of obstacles or
objects behind your car.
How it wor ks
The acoustic park assist warning system (4 -channel acoustic park
assist) uses ultrasonic sensors to warn you when you are
backing
your vehicle close to an obstac le . The system 's 4 sensors are located
inside the rear bumper.
A cti va ting
The rea r acoustic park ass ist is activa ted whenever you shift into
Re verse . You will hear a warn ing tone when the system is on.
Reverse
With the car backing up in reverse gear, the collision warning sound
se ts in at the fo llowing
approximate d istances to obstacles:
st raight a ft 5ft(
1.5ml
a ngl ing aft of f ve hicle corners 2 ft (0.6 ml
As the distance shr inks, the time interval between the audible tones
grows shorter.
The sound changes to a continuous tone as soon as the remaining
d istance to an obstacle c loses to less than about 1 ft. (0.3 ml. The
steady tone cautions you that you have backed up hazardously
close and you risk co llis ion by back ing up any furt her .
Malfunction s in the system
If a warning tone is audible for about five seconds when you turn on
the ignition, there is a ma lfunction in the system . Have the prob lem
corrected by your authorized Aud i dealer.
Controls and equip ­
ment
Keep the sensors in the rear bumper clean and free from ic e so t hat
the acoustic park assist system can funct ion proper ly .
& WARNING
• Sensors have dead spaces in which object s cannot be
detected . Be especiall y alert for small ch ildren and animals , since
they are not always dete cted by the sensor s.
• The acousti c pa rk assist system is not a substitute for the
driver's own caution and alertne ss . Ultimate re sponsibility alway s
remains w ith the driver dur ing parking and s imilar maneuvers .
Alway s watch where you are driving _
0 Note
• Remem ber t hat low obstac les for wh ich a warning has already
been issued may "dive" below the system's sensing zone if the
veh ic le is be ing bac ked up cl oser. In this case, the warning sound
shutting off does
not indica te that you have cleared the obstacle .
Instead , impact is imminent.
• Objects such as trai ler hitches, barrier chains, narrow posts or
f ences covered by a th in laye r of pa int may not always be detected
by the system . T hey can sti ll damage your vehic le without a
warning.
[ i ] Tips
Keep the sensors in the rear bumper clean and free of snow and ice
so that the acoust ic park ing ass ist system can function properly .•

-Intelligent technology
------~----- ~~--------------------------------------
one side), the spinning wheel is braked, thereby transferring power
to the other drive wheel or wheels (all- wheel drivel. This is done up
to a speed of about 60 mph (100 km/h). Noises from the brake
system signal that wheel spin is being control led.
Driving off
When driving off, always be sure to keep road conditions in mind as
you accelerate. If one drive wheel spins because it is on a surface
with less grip, gradual ly increase the pressure on the accelerator
pedal until the car starts to move. The wheel less able to transfer
power spins.
Overheating of brakes
To prevent the disc brake of the braked wheel from overheating if
subjected to excessive loads, the EDL cuts out temporarily. The
veh ic le remains operational and behaves in the same way as a
vehic le without EDL.
As soon as the brake has cooled down, EDL switches on again auto ­
matically.
& WARNING
• When accelerating on slippery surfaces, such as on ice or snow,
always be careful when depressing the accelerator pedal. Even
with the EDL working, the drive wheels can spin and reduce your
ability to control your car . - Risk of crash!
• The increased safety afforded by EDL does not mean that you
ca n take safety risks. Always adapt your driving style to the road
conditions and traffic situation.
[ i ] Tips
If a fault occurs in the ABS, the EDL is also not functioning. This is
indicated by the ABS warning
light => page 21. •
Anti-Slip Regulation System (ASR)
The Anti-Slip Regulation System prevents the driven
wheels from spinning when the car is accelerating.
General notes
The Anti-Slip Regulation System (ASR) is integrated in the electronic
stabilization program (ESP) . When the vehicle starts up and acceler­
ates, the wheels are prevented from sp inning by adjus tin g the
engine power to match the amount of grip availab le from the road
surface.
How the system works
ASR performs automatical ly, i.e . w ithout the driver's intervention.
With the aid of the ABS
sensors=> page 240, ASR monitors the
speed of the driven wheels. If the wheels start to spin, the engine
power is reduced automatically until the tires find enough grip to
lock onto the road surface. The system is active across the entire
speed range.
The ASR works in conjunction with the ABS. If a malfunction shou ld
occur in the ABS, the ASR will also be out of act ion.
Activation
The ESP is automatica lly activated when the eng ine is started, and
it performs a self-test. You can activate a deactivated ASR, if
requ ired, by pressing
t h e=> page 236, fig . 199 button .
Deactivation
You can deactivate the ASR, if required, by pressing the button (for
less than 3
seconds) => page 236, fig. 199. With the ASR deactivated,
the ESP check light flashes,
see=> page 22.
Normally, the ESP shou ld always be on, however, it may be advanta­
geous to turn off the system in certai n special cases when some
degree of wheel spin is desired such as :
• when driving with snow chains

llffll.___l_n _t _e _ll _ig =- e_n _ t_ te_ c_h _n_ o_ lo-'g'"'-=- y ___________________________________________ _
• Be aware of the different than usua l steering response and
adjus t you r steer ing forc e acc ordin gly.
• Have the prob lem checked and set right by an Audi dea ler as
s o on as poss ible.
[ i] Tips
• When t he engi ne is running, never ho ld t he steer ing w heel
turned all the way to the right or to the left for longer than 15
seco nds. Th e powe r steering p ump w ill ove rhea t th e hydra ulic flu id
if you keep holding the steer ing whee l turned a ll the way . T his is
l ike ly to d amage t he powe r stee ring sys tem.
• I f the power steering system should fail entirely, or if the engine
i s not r unning ( for e xa mpl e, while being t owed), you will still be able
to steer the vehicle . However,
considerably more effort wil l be
r e q uired to do s o.
• I f the power steering system should have a lea k, or is not func ­
t ioning pr operly, co nt ac t yo ur auth orize d Audi deale r immedia tely.
• T he power steering system requires a specia lly formu lated
h ydraulic fluid. T he power s teeri ng reserv oir is th e one loca ted m ost
forward on the left side of the engine
compartment=> page 265,
"Engine co mpartme nt". The c orrect f luid level in the reservoir is
important for proper functioning of the power steering .•
Ap plies to veh icl es : w ith A ll Whee l Dr ive
Driving with your quattro®
Wit h All Whe el Dr ive, all fo ur w heel s are d riven .
Gen eral information
With All W heel Dr ive, powe r is d istributed to all four w hee ls . T hi s
happens automatica lly depending on your dr iving style and the
r oa d c ondit ions at th e time. See
also => page 237, "Elec tronic diff er­
entia l lock (E DU" .
Winter tires
When driv ing in th e win te r, yo ur ve hicle with All Wheel Drive ha s an
advantage, even with regular t ires. In winter road conditions it may
b e advi sable to m ount win ter tires ( or all -s easo n tires) for impr oved
driveabi lit y and braking : th ese tires mus t be moun ted on
all four
wheels .
See also => page 31 0, "Winter tires".
Snow chains
Whe re snow cha ins a re ma ndato ry on certai n roa ds, th is norma lly
a lso app lies to veh ic les with a ll-wheel
dr ive=> page 311, "Snow
chain s".
Replacing wheels /tires
Ve hicles wit h All Wheel D rive mu st always have t ires of the sa me
size . A lso avo id tires with different tread depths . For details see
page
=> page 305 .
Off-Road dri ving?
Yo ur Au di d oes not have e nough gr ound clea ra nce to be use d as an
off -road vehic le . It is therefore best to avoid rough tracks and
u neven te rr ain as much as poss ible . Also refe r
to => page 2 45.
& WARNING
Alway s adjust your driving to road and traffic condition s. Do not
let the extra safety afforded by the all -wheel drive tempt you into
taking extra risks .
• Although the quattro ®all-wheel drive is very effective, always
remember that braking capacity is limited by tire traction. You
should therefore not drive at e xcessive speeds on icy or slippery
road surfaces.
• On wet road surfaces , be careful not to drive too fast be cause
the front wheels could begin to slide on top of the water (hydro ­
planing ). If this should occur , you will have no warning from a
sudden increase in engine speed as with a front -wheel drive
vehicle . Always drive at speeds which are adjusted to the road
conditions - risk of crash! •

Tires and wheels 1111
----------------
W For the sake of the environment
Use summer tires when weather conditions permit. They are
quieter, do not wear as quickly and reduce fuel consumption. •
Snow chains
Snow chains may be fitted only to the front wheels, and only to
certain tire sizes. Ask your authorized Audi dealer on which tire
sizes snow chains can be used.
If you are going to use snow chains, then you must install them on
the front wheels at least.
The snow chains must have low-profile links and must not be thicker
than 0.53 inch (13.5 mm), including the lock.
Remove wheel center covers and trim discs before putting snow
chains on your
vehicle => 0. For safety reasons cover caps must
then be fitted over the wheel bolts. These are available from autho­
rized Audi dealers.
& WARNING
Using the wrong snow chains for your vehicle or installing them
incorrectly can increase the risk of loss of control leading to
serious personal injury.
• Snow chains are available in different sizes. Always make sure
to follow the instructions provided by the snow chain manufac­
turer.
• When driving with snow chains never drive faster than the
speed permitted for your specific snow chains.
• Always observe local regulations .
0 Note
• Remove snow chains before driving on roads not covered with
snow to avoid damaging tires and wearing the snow chains down
u n necessarily.
• Snow chains, which come into direct contact with the wheel rim,
can scratch or damage it . Therefore, make sure that the snow chains
are suitably covered.
[ i] Tips
Where snow chains are mandatory on certain roads, this normally
also applies to vehicles with All Wheel Drive. •
Wheel bolts
Wheel bolts must always be tightened to the correct
torque.
The design of wheel bolts is matched to the factory installed rims. If
different rims are fitted, the correct wheel bolts with the right length
and correctly shaped bolt heads must be used. This ensures that
wheels are fitted securely and that the brake system functions
correctly.
In certain circumstances, you may not use wheel bolts from a
different vehicle -even if it is the same
model => page 348.
& WARNING
Improperly tightened or maintained wheel bolts can become loose
causing loss of control, a collision and serious personal injury.
• Always keep the wheel bolts and the threads in the wheel hubs
clean so the wheel bolts can turn easily and be properly tightened .
• Never grease or oil the wheel bolts and the threads in the wheel
hubs. They can become loose while driving if greased or oiled,
even if tightened to the specified torque.
.,_
Vehicle care

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