wheel AUDI Q7 2013 Owner´s Manual

-Stability is limited in the ESC offroad
mode.
Electronic differential lock (EDL)
The electronic differential lock monitors the
rotational speed of the drive wheels .
General notes
The electronic differentia l lock (EDL) helps the
car to start movi ng, accelerate and climb a
gradient on surfaces providing poor or almost
no grip. Without EDL, this would be difficult,
if not impossible.
H ow the system works
The ED L opera tes automatically. It monitors
the rotat iona l speed of wheels w ith the help
of the ABS sensors¢
page 229. If a noticea­
b le
slip is detected at the wheels (e .g. on slip ­
pery ground
on one side), the spinning whee ls
are braked and power is transferred to the
other wheels. This is done up to a speed of
about
60 mph (100 km/h) . Noises from the
brake system s ignal that wheel sp in is being
controlled.
Dri ving 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
w ith less gr ip, apply
plenty of throttle until
the car starts to move.
O verheating of br akes
To prevent the disc brake of the braked wheel
from overheating if subjected to excessive
loads on this wheel, the EDL cuts out tempo­
rarily . T he vehicle remains operational and be­
haves in the same way as a veh icle w ithout
E DL.
As soon as the brake has cooled down, EDL
switches on again automatically .
A WARNING
-When accelerating on slippery surfaces,
such as on ice or snow, always be carefu l
when depressing the acce le rator pedal.
Int ellig ent technolog y 22 7
Even with the EDL working, the drive
wheels can spin and red uce your ab ility
to control your car. Risk of crash!
- The increased safety afforded by EDL
does not mean that you can take safety
risks. Always adapt your driving style to
the road condit ions and traffic situation .
(D Tips
If a fault occurs in the ABS, the EDL is also
not functioning. This is ind icated by the
ABS warning light¢
page 18.
Anti-Slip Regulation System (ASR )
The Anti-Slip Regulation System prevents the
driven wheels from spinning when the car is
accelerating .
General note s
The Anti-Slip Regu lation System (ASR) is inte­
grated in the Electronic Stabilization Control
(ESC). When the vehicle starts up and acceler­
ates, the wheels are prevented from spinning
by adjust ing the engine power to match the
amount of grip available from the road sur­
face .
How the sy stem works
ASR performs automat ically, i.e. without the
driver's intervention. With the aid of the ABS
sensors ¢
page 229, ASR monito rs the speed
of the dr iven wheels .
If the wheels start to
spin, engine torque is red uced automat ically
unt il the t ires find enough grip to lock onto
the ro ad surface. The system is active across
the entire speed range.
T he ASR works in conjunction with the ABS. If
a malfunc tion s hou ld occu r in the ABS, the
ASR wi ll also be out of act io n.
A WARNING ~
The increased safety affo rded by ASR does
not mean that you can take safety risks.
A lways adapt your driving sty le to the road
conditions and traffic situation.
Ill--
•
•

228 Intelligent technology
To ensure that the ASR works properly, all
four wheels must be fitted with identical
tires. Any differences in rolling rad ius of
the t ires can cause the system to reduce
engine power when this is not desired. See
also¢
page 291, New tires and replacing
tires and wheels.
Braking
General information
What affects braking efficiency?
Operating conditions and driving habits
The brakes on today's automob iles are st ill
subject to wea r, depending la rgely on operat­
ing cond itions and dr iv ing habits
Q ,& . On
vehicles that are either driven mostly in stop­
and -go city traffic or are driven hard, the
brake pads should be checked by your author­
ized Audi dealer more often than specified in
the
Warranty & Maintenance booklet . Failure
to have your brake pads inspected can result
in reduced brake performance .
On steep slopes, you shou ld use the braking
effect of the engine. This way, you prevent un­
necessary wear on the brake system. If you
must use your brakes, do not hold the brakes
down continuously . Pump the brakes at inter­
va ls.
Noises may occur when braking depending on
the speed, braking force and outside condi­
tions such as temperature and humidity.
Moisture or road salt
Under certain conditions, for examp le, when
driving through water or very heavy rain, or
even after washing your vehicle, the braking
effect can be reduced due to moisture (or in
freezing conditions ice) on the brake pads. A
few careful brake applications should dry off
the brake pads o r remove any ice coatings.
When you are driving at higher speeds with
the w indshield wipers on, the brake pads will
brief ly touch the brake discs in regular inter- vals so as
to improve reaction time when brak ­
ing on wet surfaces . You, the driver, will not
notice anything.
T he effect iveness of the brakes can be reduced
when the vehicle is driven on a sa lt-covered
road and the brakes are not used . Here too,
you should clean off accumulated sa lt coating
from brake discs and pads w ith a few careful
applications of the brake¢,&.
Corrosion
There may be a tendency for dirt to build up
on the brake pads and corrosion to form on
the discs if the car is not driven regu larly or
only for short trips with litt le use of the
brakes.
If the brakes are not used frequently, or if cor­
rosion has formed on the discs, it is advisable
to clean off the pads and discs by braking
firmly a few times from a moderately high
speed
c> ,& .
Faults in the brake system
If you shou ld notice a sudden increase in
brake pedal trave l, then one of the two brake
c ir cuits may have fa iled
c> ,& .
Low brake fluid level
Malfunctions can occur in the brake system if
the brake fluid level is too low. The brake fluid
l evel is monitored electronically .
Brake lining wear status
Brake lining wear may be checked by visual in­
spect ion of the condition of the brake pads
through the openings in the wheel. If neces­
sary, the wheel may be removed for this in­
spect ion
c> page 304, Changing a wheel.
A WARNING
-- You shou ld perform braking maneuvers
for the purpose of cleaning the brake
system only if road conditions permit.
Othe r road users must not be put at risk -
you may cause an accident!

-Before descending a steep grade, reduce
speed and shift transmiss ion into a lower
gear or lower driving range. Do not ride
the brakes or hold the pedal down too
long or too often. This could cause the
brakes to get hot and dimin ish braking
efficiency.
- Do not "r ide the brakes" by resting your
foot on the pedal when you do not intend
to brake. Th is may cause the brakes to
overheat, prema ture wear and increased
stopping distance .
- Under certain climat ic and operating
condit ions such as passing through wa­
ter, driving in heavy rain or after washing
the vehicle, the effectiveness of the
brakes can be reduced . In winter, ice can
accumulate on the brake pads, linings,
discs and drums. Carefully apply brakes
for a test . Brakes will dry and ice coat­
ings will be cleaned off after a few care­
ful brake applications.
- Driv ing for an extended period of time on
salt-covered roads w ithout us ing your
brakes can also affect braking efficiency .
Clean off accumulated salt coating from
brake discs and pads w ith a few caref ul
brake applicat ions.
- If you damage the front spoiler, or if you
install a different spoiler, be sure the air
flow to the front brakes is not obstruct ­
ed. Otherwise the brake system could
overheat reducing the effectiveness of
the entire brake system.
- Failure of one brake circuit will impair
the braking capability resulting in an in­
creased stopp ing distance. Avoid driv ing
the vehicle and have it towed to the near­
est author ized Audi dealer or qualified
workshop .
Brake booster
The brake booster adds extra braking power.
The brake booster works with vacuum pres­
sure which is created only when the engine is
running¢ &,.
Int ellig ent technolog y 229
A WARNING
-Never let the veh icle roll to a stop with
the engine shut off .
- If the brake booster is not working, for
example when towing your vehicle, or because the brake booster has somehow
been damaged, the brake pedal must be
pressed considerably harder to make up
for the lack of booster assistance .
Functioning of Anti-Lock Brake System
(ABS)
ABS prevents the wheels from locking up un­
der braking.
T he ABS contributes effect ively to vehicle con­
trol s ince it preve nts the whee ls from
locking
when the brakes are applied. This means that
the vehicle remains steerable and is less likely
to skid .
With ABS y ou do not n eed to pump the
bra ke. Just h old t he br ake ped al d own .
However, do not expect the ABS to shorten
braking distance under
all circumstances.
When dr iving on g ravel or on new ly fallen
snow o n top of icy s urfaces, braking dis tance
may be even longer, therefore, under these
circumstances, it is especia lly important that
you drive s low ly and with great care.
How the ABS s ystem works
An a utomat ic check is made when a speed of
about 12 mph (20 km/h) is reached . When
th is happens, a pumping noise can be heard.
If an ind iv idual whee l begi ns to rotate too
s low ly in relation to vehicle speed and tends
to lock, the ABS automatically reduces brake
pressure to prevent that whee l from locking .
T his automatic adjustment p rocess will cause
a
sli ght vibrati on of the brake pedal and some
noises to a le rt you that ve hicle speed m ust be
adapted to existing road and traffic condi ­
tions. •
•

230 Intellig ent technol ogy
8_ WARNING
Although the ABS is very effective, always
remember that bra king capability is limit­
ed by t ire traction . Always adjust your dr iv­
ing spee d according to the road and t raffic
co nditions. Do no t let t he extra sa fety af­
forded by the ABS tempt you into ta king
extra risks. The ABS cannot overcome the
laws of physics.
@ Tips
- If ABS is not functioning prope rly, a
warning light will come on. See
¢page 18 .
-If a fault occurs in the ABS, the EDL is al­
so not functioning. This is indicated by
the ABS warning light .
Brake assistant
The brake assistant is designed to achieve the
optimum braking effect .
The brake assistant helps to increase the ef­
fective b rak ing power and thus to achieve a
shorter stopp ing distance. If the driver
presses the brake pedal very quickly, the brake
assistant automatica lly boosts the braking
force to the maximum level, up to the point where the anti-lock brake function (ABS) inter­
venes to stop the wheels from locking. You
should then keep the brake pedal pressed un­
til the veh icle has braked to the required
speed . The brake assistant sw itches itself off
as soo n as you re lease the brake pedal.
Automatic full braking a ssist
This funct ion allows full brak ing in spite of
h igh brake pedal forces (e .g . when the brakes
a re severely stressed because the vehicle is
fully loaded) . The driver notices th is function
throug h a reduction of pedal force and in­
creased pedal trave l. When the brake peda l is
r e leased, fu ll braking assis t switc hes off again
automatically.
I f the re is an ABS fa il ur e, the brake ass ista nt
and automatic full b rak ing ass ist are not avai l­
ab le . The brake assistant wi
ll not be operative if
there is a ma lfunction in the ABS .
8_ WARNING
-Please remember that the accident risk a l-
ways increases if you drive too fast, espe­
cially in corners or on a slippery road, or if
you follow the veh icle ahead of you too
closely. Increased r isk of an accident can­
not be compensated for even by the brake
assistant, so always maintain a safe speed.
Servotronic ® -
advanced power
steering system
The power steering systems uses the power of
the running engine to allow precise steering
with little effort.
The advanced Servotronic ® power steering
system senses the road speed and electron i­
cally adjusts power assistance to provide com­
fortab le and safe steering response exact ly
matched to the vehicle speed .
Power steer ing will not work if the engine is
off . As a result, the steering wheel will be hard
to turn .
The power steering fluid level is checked dur­
ing the scheduled maintenance services .
d) Note
If there is an electronic malfunction, ser­
votronic
will still function like a conven­
tiona l powe r steering system, providing a
constant steering support force that is no
l onger proportionate to the vehicle speed .
This is most not iceable when turning the
stee ring wheel at low speeds (fo r example
when pa rking), - more effort w ill be re­
q uired than us ua l.
- Be aware o f the different than usual
steering response and adjust your steer ­
ing force accordingly.
- Have the problem checked and set r ight
by an Audi dealer as soon as possible .

@ Tips
- When the engine is running, never hold
the steer ing whee l turned a ll the way to
the right or t o the left f or longer than 15
seconds. The power steering pump w ill
overheat the hydraulic f lu id if you keep
hol ding the steer ing wheel turned all the
way. This is likely to damage the power
steering system.
- If the power steer ing system should fail
ent irely, or if the engine is not running
(fo r example, while being towed), you
will still be ab le to steer the vehicle.
However,
considerably more effort will
be required to do so.
- If the power s teer ing system should
have a leak, or is not functioning proper­
l y, contact yo ur authorized Audi dealer
immediately.
- The power stee ring system requires a
spec ially formulated hydraulic fluid. The
power steering reservo ir is the one locat­
ed farthest to the rear on the left side of
the engine compartment
c> page 266.
The co rrect flu id level in the reservoir is
i mportant for proper functioning of the
power steer ing .
Driving with your
quattro ®
With all-wheel drive, oil four wheels ore driv ­
en.
Gener al information
W ith all -whee l dr ive , power is distributed to
a ll fo ur wheels. This happens automatica lly
depending on yo ur driving sty le and the road
conditions at the time . See also
¢ page 227,
Electronic differential lock (EDL) .
Winter tires
When driving in the w inter, your ve hicl e w it h
all -wheel drive has an advan tage, even with
regu lar tires . In winter road conditions it may
be advisable to mount winter tires (or all -sea­
son t ires) for improved driveability and brak-
Int ellig ent technolog y 231
ing: these tires must be mounted on all four
wheel s. See also ¢
page 295, Winter tires .
Tire chains
Where tire chains are mandatory o n certain
roads, this no rma lly also app lies to veh icles
with all-wheel drive¢
page 296, Snow
chains.
Replacing wheels /tires
Vehicles with all-wheel drive must always have ti res of t he same s ize. A lso avo id tires
with different t read depths. For det ails see
page
c!;> page 291, New tires and replacing
tires and wheels .
_& WARNING
A lways adj ust yo ur driv ing to road and traf­
f ic conditions. Do not let the extra safety
afforded by all-wheel drive tempt you into
taking extra risks.
-Altho ugh the all-wheel drive is very ef­
fective, always remember that braking
capacity is lim ited by tire traction. You
should therefore not drive at excessive
speeds on icy or slippe ry road surfaces .
- On wet road surfaces, be careful not to drive too fast because the front wheels
could begin to slide o n top of the water
(aquaplaning). If th is should occur, yo u
will have no warning from a s udden in­
crease in engine speed as w ith a front ­
wheel drive vehicle. Always drive at
speeds which are suited to the road con­
ditions -risk of crash.
Energy management
Starting ability is optimized
Energy management controls the distribution
of electrical energy and thus optimizes the
availability of electrical energy for starting the engine.
If a vehicle with a conventiona l energy system
is not driven for a long per iod of t ime, the bat­
te ry is discharged by idling cur rent consume rs
(e.g. immobi liz e r). In certa in circumstan ces it ..,_
•
•

238 Driving off road
Driving off road
Driving in difficult road
conditions and offroad
General information
The operation of the E lectronic Stabilization
Control (ESC) is expanded for operation away
from paved roads. In situations where slip or a
differential locking function is required, the ESC offroad mode can be activated
c::> page 225 . Hill descent control is also availa­
ble in the ESC offroad mode, which automati­
cally brakes the vehicle and thereby keeps
speed constant when diffe rent wheel speeds
a re detected when descending a hill
c::> page 226. Your Audi also has permanent
a ll-wheel drive in addition.
H owever, your Aud i is not a pure off road vehi­
cle .
It was not built for d riving unde r extreme
conditions, e.g. fo r trips that are in the nature
of an expedition.
Dri ve only on road s and offroad section s
which mat ch the de sig n of your vehi cle and
y our a biliti es as a driver. Ne ver t ake ris k s!
Before driving offroad
- Check the eng ine oil level, tire pressure,
coolant level , and the fluid level in the w ind­
shield washe r reservo ir.
- Stow luggage items and other objects in the
luggage compartment, and secure them
against s lid ing aro und .
After driving offro ad
- After trips offroad, remove any twigs and
other foreign objects from the grill, the un­derbody and the wheels. Pay spec ia l atten­
t ion to fore ign objects (stones) which have
become lodged in the tire tread.
- Clean the body and the veh icle unders ide,
and inspec t the veh icle for poss ible damage.
- Clean dirty w indows , headlamp lenses , rear
l ights, and license plates .
- Perform a brake check (part icularly after
t ravel ling through water) .
A WARNING
-Drive especially attentively and plan
ahead in d iff icu lt road conditions and
when offroad. Excessive speed o r inco r­
rect maneuvers can cause injuries and
damage to the vehicle.
-
- Always adapt your speed and driving
style to road, offroad, t raff ic, and weath­
er cond itions. Drive especially slowly off­
road when you r view is res tricted.
- Please be awa re that in ESC off road
mode, particularly on a smoo th and s lip­
pery road, the wheels may have an in­
creased tendency to spin and the vehicle may break away -danger of skidding!
- Stability is limited in the ESC off road
mode .
@) For the sake of the environment
Avoid damage to the environment and re­
spect nature .
(D Tips
Only drive w here it is permitted and stay
on marked roads and paths.
Explanation of some technical terms
T he following data refe r to ideal cond itions.
Depend ing on veh icle load and ground condi ­
tions and the environment, the numbers may
vary. It is the driver's responsibility to decide
whether a vehicle can overcome a specific s it­
uat ion
c::> ,&. .
Gradient angle
The number of meters in alt itude gained over
a distance of 109.4 yards or 100 meters
(grade) are given as a percentage or degrees.
Information about the gradient the vehicle
can climb under its own power (depends in
part on the road surface and engine power) .
Max imum perm itted grade : 3 1
°
Late ral angle (slope of vehicle )
Indicates the angle up to which the vehicle
can be driven diagonally or across the fall line ..,.

244 Trailer towing
have become comp lete ly familiar with the way
your vehicle-trailer combination behaves and responds.
Backing up is difficult and requires practice.
Backing up with a trai ler genera lly requires
steering action opposite to that when backing
up your veh icle without a trailer .
Maintain a greater distance be tween your ve­
hicle and the one in front of you. You will need
more room to stop. To compensate for the
trailer, you will need a larger than normal
turning radius.
When passing, remember that you cannot ac­
celerate as fast as you normally would be­
cause of the added load. Make sure you have
enough room to pass . After passing, allow
plenty of room for your trailer before chang­
ing lanes again .
Avoid jerky starts, sharp turns or rapid lane
changes.
- Do not tow a trailer during the break-in
period of your vehicle.
- If you tow a trailer, your Audi may re­
quire more freq uent maintenance due to
the extra load
c> page 325.
Parking on a slope
Do not pork on a slope with a trailer. If it can­
not be avoided, do so only after doing the fol ­
lowing:
When parking:
.. Apply the foot brake .
.. Have someone place chocks under both the
vehicle and the trai ler wheels .
.. With chocks in p lace, slowly re lease the
brakes until the wheel chocks absorb the
load .
.. Turn the wheels towards the curb .
.. Apply the parking brake .
.. Move the selector lever to
P.
When restarting after parking:
.. Apply the foot brake. ..
Start the engine.
.. Move the se lector lever to
D.
.. Release the parking brake and s low ly pull
out and away from the wheel chocks.
.. Stop and have someone retr ieve the wheel
chocks .
(D Tips
If you move the selector lever of the auto­
matic transmission to
P before applying
the parking brake and before blocking the
wheels, you may have to use more fo rce
l ater to move the lever out of the
P posi­
tion.

Cleaning and protect ion
General information
Regular core preserves vehicle value.
Any automobile is exposed to industrial
fumes , corrosive road salt, etc. A well cared
for Audi can look like new many years after purchase . Regu lar and correct care w ill con­
tr ibute to maintaining the beauty and value of
your Aud i.
F u rth ermor e, good c are may be a conditi on
for subs tantiati ng a w arrant y claim sho uld
c orrosion d amag e or paint d efects oc cur.
Your authorized Audi dealer has a variety of
dedic ated veh icle-car e products and can ad ­
vise which ones to use for cleaning the exter i­
or and interior of your vehicle.
Whether you use products recommended by
Aud i or other commercially available clean ing
agents, please make sure you apply them cor­
rectly .
.&, WARNING
-Cleaning agents may be poisonous. Keep
them out of the reach of children.
- Heed all caut ion labels.
- Always read directions on the container
before using any product. Follow the di­
rect ions carefu lly.
- Most chemical cleaners are concentrated
and have to be diluted .
- Use spot removing fluids only in well
ventilated areas.
- Do not use gasoline, kerosene, d iesel
fuel, nail polish remover or other volatile
fluids. They may be toxic, flammab le or
haza rdous in other ways. Do not wash,
wax or dry the vehicle with the ign it ion
on or the engine running .
- Do not clean the undersides of chassis,
fenders, wheel covers, e tc. w ithout pro­
tecting your hands and arms. You may c u t yourself on sharp -edged metal parts .
Cleaning and protec tion 245
- Moisture and ice on brakes may impair
brak ing effic iency¢
page 228, General
information.
Test the brakes carefully
each time you wash the vehicle.
@) For the sake of the environment
Select on ly environmentally friend ly clean­
i ng products . Leftover cleaning products
should not d isposed of in the household
waste.
Care of exterior
Washing
Frequent washing protects the vehicle .
The best protection against environmental i n­
fluences is
frequent washing and waxing . How
often t his is required depends on:
- How much the veh icle is used
- Where the veh icle is parked (garage, in the
open under trees, etc.)
- The seasona l and weather conditions
- Environmental infl uences
T he longer b ird droppings, insects, tree resin,
road and indus tria l gr ime, ta r, soot, road salt
and other materials remain on the vehicle body, the more lasting their destructive ef­
fects wi ll be . High temperatures caused by ex­
posure to intense sun light intens ify the corro­
s ive effect, particularly when humid ity is high
as well.
Under certain circumstances,
weekl y washing
may be necessary. Under other cond itions, a
monthly washing and waxing may be ade­
quate .
After the winter, the underside of the vehicle
should be thoroughly washed, preferab ly in a
professional car wash .
.&, WARNING ,_
A lways read and heed all WARNINGS and
other information ¢
page 245.
•
•

24 6 Cl eaning and protec tio n
Automatic car wash
The vehicle can be washed in almost any
modern automatic car wash .
The vehicle paint is so durable that the vehicle
can normally be washed without problems in
an automatic car wash. However, the effect on
the paint depends to a large extent on the de­
sign of the facility, the filtering of the wash
water, the type of wash and care mater ial , etc.
I f the pa int has a dull appearance afte r going
through the car wash or is scratched, bring
this to the attention of the operator immedi­
ately. If necessary, use a different car wash.
Before going through a car wash, be sure to
take the usual precautions such as closing the
windows and the Panoramic sliding s unroof.
Factory installed antennas must not be re­
moved.
I f you have installed additional accessories on
the vehicle - such as spoilers, roof rack, etc. -
it is best to ask the car wash operator if these
should be removed.
A WARNING
Please take note of the following po ints
before going through an automatic car
wash with your vehicle, so that you can avoid damage to your vehicle .
- Compare the track of your vehicle with the distance between the gu ide rails of
the fac ility- there is a risk of damage to
the whee ls and t ires.
- Compare the height and w idth of your
vehicle with the height and width of the
tunnel at the facility.
- Fold the exte rior mirrors flat - there is a
risk of damag ing the exte rior m irrors.
Power folding exterior mirrors* mus t not
be folded in or out by hand. Use the pow­
er function!
- Do not al low the wiper blade to fall onto
the windshield after the vehicle is dried -
there is a risk of damag ing the paint on
the hood.
- Always read and heed all WARNINGS and other information ¢
page 245.
Washing the vehicle by hand
A lot of water is needed when washing a vehi­
cle by hand .
.,. Before you start washing, make sure you
have read and understood the WARNINGS
¢ .&. in General information on page 245 .
.,. First soak all dried d irt unt il it is soft, then
r inse it off .
.,. As you clean you r vehicle , start w it h the
roof and work your way down to the bottom,
using a sponge, a sponge g love or a clean
brush.
.,. Rinse the sponge or the sponge glove often,
flushing it clean each time.
.,. Use spec ial car shampoo only for very per­
sistent d irt .
.,. Rinse the car thoroughly wit h water .
.,. Use a chamo is leather to gently w ipe the ex-
ter ior d ry.
Use a separate sponge for cleaning the
wheels, door s ills and other regions exposed
to road dirt . In this way, you will not scratch
the pa int with coarse pa rticles imbedded in
the sponge the next time you wash the car.
A WARNING ~ -
- Do not clean the underside of the chas­
sis, fenders, wheel covers , or other ha rd
to reach pa rts without protect ing your
hands and arms . You may cut yourself on
sharp-edged metal parts.
- Always read and heed a ll WARNINGS and
other information ¢
page 245.
(D Note
- Never try to remove dirt, mud or dust if
the surface of the ve hicle is dry . Never
use a dry cloth or sponge, s ince this
co uld scratch your vehicle's paint or win ­
dows .
- Never wash your car in bright s unlight.
Drops of water act as magn ifying lenses
and may damage your paint .
- When you wash your car in the winter: if you rinse your vehicle with a hose, be careful not to aim the stream of water

250 Cleaning and protec tio n
Cast (light) alloy wheels
Cast (light) alloy wheels require special care .
• Wash the whee ls with a sponge or hose
brush every other week.
• For deep cleaning afterwards, use only a
dedicated
aci d-fr ee cast alloy wheel cleaner .
• Rub a coat of
liq uid wax onto the r ims every
t h ree months. Be su re to reach and treat all
parts of the rim .
To preserve the decorat ive appearance of the
cast alloy whee ls, some specia l care is neces­
sa ry. In addit ion to road dirt and sa lt, b rake
d ust is a lso corros ive. If left on for too long,
b rake dust can cause pitting.
Use only specia l
acid-free cleaners formulated
for a lloy rims . Safe p roducts are available at
your author ized Audi dealer. Never leave the
cleane r on the rims longe r than specified on
the label. If not rinsed off promptly, the acid
contained in some cleaners can attack the
threads on the whee l bolts.
Never use ab rasive or metal polishing clean­
ing agents. If the protective coating has been
chipped, e .g. by k icked up road dirt, touch it
up as soon as possible.
A WARNING
- Moisture and ice on brakes may affect
braking efficiency¢
page 228, General
information.
Test the brakes carefully
each time you wash the veh icle .
- Always read and heed all WARNINGS and
other information
¢ page 245.
-
Body cavity sealing
The body cavity sealing does no t need to be
checked.
A ll body cavities which co uld be affected by
corrosion have been thoro ughly protected at
the factory.
This sealing does not require any inspection or
addit ional treatment . If any wax should seep
out of the cav ity when the ambient tempera- ture is high, it can be removed with a p
lastic
scraper and a suitable solvent.
A WARNING
-Solvents can be dangerous.
- Benzine is flammab le and toxic. If you
use benzine for removing the wax, keep
sparks, flame and lighted cigarettes
away. Never dump benz ine on the
ground, into open streams or down sew­
age drains.
- Be sure to observe all safety and environ­
mental regulat ions . Follow all instruc­
tions on the container .
- Always read and heed all WARNINGS and
other information ¢
page 245.
, Chassis
Have the undercoating checked for damage
from time to time.
The lower body shell of your Audi is also thor­
oughly protected against corros ion.
Any damage to the undercoating caused by road hazards should be repaired prompt ly .
A WARNING
Too much undercoating in the wrong p la­
ces can cause a fire.
- Do not app ly additional undercoating or
r u stproof ing on or near the exhaust
manifold, exhaust pipes, catalytic con­
verter or heat shields. While driving, the substance used for undercoating could
overheat and cause a fire.
'
- Always read and heed all WARNINGS and
other information ¢
page 245.
Exhaust tail pipes
Road salt and other corrosive materials will
damage the material in the exhaust tail pipes
if they are not cleaned regularly. Do not clean
the tail pipes with wheel cleaner, pa int polish,
chrome polish or other ab rasive cleaners.
Clean the tail pipes with car care products
that are suitable for stainless steel.