wheel AUDI A5 COUPE 2010 Service Manual

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• Be aware of the different than usual steering response and
adjust your steering force accordingly.
• Have the problem checked and set right by an Audi dealer as
soon as possible.
[ i] Tips
• When the engine is running, never hold the steering wheel
turned all the way to the right or to the left for longer than 15
seconds. The power steering pump will overheat the hydraulic fluid
if you keep holding the steering wheel turned all the way. This is
likely to damage the power steering system.
• If the power steering system should fail en tirely, or if the engine
is not running (for example, while being towed), you will still be able
to steer the vehicle . However,
considerably more effort will be
required to do so.
• If the power steering system should have a leak, or is not func­
tioning properly, contact your authorized Audi dealer immediately.
• The power steering system requires a specially formulated
hydraulic fluid. The power steering reservoir is the one located
farthest to the rear on the left side of the engine compartment
=>
page 272. The correct fluid level in the reservoir is important for
proper functioning of the power steering .•
Driving with your quattro®
With all wheel drive, all four wheels are driven.
General information
With all wheel drive, power is distributed to all four wheels. This
happens automatically depending on your driving style and the
road conditions at the time. See also=>
page 235, "Electronic differ­
ential lock (EDU".
The all wheel drive concept is designed for high engine power. Your
vehicle is exceptionally powerful and has excellent driving charac -teristics both under normal driving conditions and on snow and ice.
Always read and
follow safety precautions =>& .
Winter tires
When driving in the winter, your vehicle with all wheel drive has an
advantage, even with regular tires. In winter road conditions it may
be advisable to mount winter tires (or all-season tires) for improved
driveability and braking : these tires must be mounted on
all four
wheels.
See also => page 304, "Winter tires".
Tire chains
Where tire chains are mandatory on certain roads, this normally
also applies to vehicles with all wheel drive =>
page 305, "Snow
chains".
Replacing vvheels/tires
Vehicles with all wheel drive must always have tires of the same
si ze . Also avoid tires with different tread depths. For details see
page =>
page 299, "New tires and replacing tires and wheels".
Off-Road driving?
Your Audi does not have enough ground clearance to be used as an
off-road vehicle. It is therefore best to avoid rough tracks and
uneven terrain as much as possible. Also refer to=>
page 244.
& WARNING
Always adjust your driving to road and traffic conditions. Do not
let the extra safety afforded by all wheel drive tempt you into
taking extra risks.
• Although the all wheel drive is very effective, always remember
that braking capacity is limited by tire traction. You should there ­
fore not drive at excessive speeds on icy or slippery road surfaces.
• On wet road surfaces, be careful not to drive too fast because
the front wheels could begin to slide on top of the water (aqua­
planing). If this should occur, you will have no warning from a
sudden increase in engine speed as with a front-wheel drive
~

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Observe speed limits. In some areas, speeds for vehicles towing
trailers are lower than for regular vehicles.
Always apply brakes early. When driving downhill, shift into a lower gear to use the engine braking effect to slow the vehicle. Use of the
brakes a lone can cause them to overheat and fail.
Coolant temperature
The coolant temperature gauge=> page 8 must be observed care­
ful ly . If the needle moves close to the upper end of the scale, reduce
speed immediately and/or turn off the air conditioner .
If the coolant temperature warning light in the instrument cluster
starts flashing
-F- , pul l off the road, stop and let the engine idle for
about two minutes to prevent heat build-up .
& WARNING
Anyone not properly restrained in a moving vehicle is at a much
greater risk in an accident. Never let anyone ride in your car who
is not properly wearing the restraints provided by Audi . •
Trailer towing tips
Important to know
----------------
Your vehicle handles differently when towing a trailer because of
the additional weight and different weight distribution. Safety,
performance and economy will great ly depend on how careful ly you
load your trailer and operate your rig.
Before you actual ly tow your trailer, pract ice turning, stopping and
backing up in an area away from traffic. Keep practicing unti l you
have become completely familiar with the way your vehicle -trailer
combination behaves and responds . Backing
up is difficult and requires practice . Backing up with a
t rai ler genera lly requires steering action opposite to that when
backing up your vehicle without a trailer .
Maintain a greater distance between your vehicle and the one in
front of you. You will need more room to stop . To compensate for
the trai ler, you wi ll need a larger than norma l turning radius.
When passing, remember that you cannot accelerate as fast as you
normally would because of the added load. Make sure you have
enough room to pass. After passing, al low plenty of room for your
trai ler before changing lanes again .
Avoid jerky starts, sharp turns or rapid lane changes.
[ i ] Tips
• Do not tow a trailer during the break -in period of your vehicle.
• If you tow a trailer, your Audi may require more frequent mainte­
nance due to the extra load=>
page 339. •
Parking on a s•ope
Do not pork on a slope with a trailer. If it cannot be
avoided, do so only ofter doing the following:
When parking:
Apply the foot brake.
- Have someone p lace chocks under both the vehicle and
the trailer wheels.
With chocks in place, slow ly release the brakes until the
wheel chocks absorb the load.
- Turn the wheels towards the curb.
- Apply the parking brake.

-Place an automatic transmission* in P, respectively a
manual transmission in first or reverse gear.
When restarting after parking :
- Apply the foot brake .
- Start the engine.
- Move t he selector lever to
D, respectively a manual trans-
mission in first gear.
- Release the parking brake and slowly pull out and away
from the wheel chocks.
- Stop and have someone retrieve the wheel chocks .
[ i ] Tips
If you move the selector lever of the automatic transmission * to P
before applying the parking b rake and before blocking the wheels,
you may have to use more force later to move the lever out of the P
position .•
Controls and equip­
ment Safety first Vehicle operation
Trailer towing
Vehicle care Do-it-yourself service
Technical data

-Cleaning and prot ection
P'tr:1-~--------------
Cleaning and protection
General information
Regular ca re p rese rves vehicle value .
Any automobile is exposed to industrial fumes, corrosive road salt ,
muddy dog feet, e tc. A wel l cared fo r Audi can look l ike new many
years after purchase . Regu lar and correct care will contribute to
maintaining the beauty and va lue of your Audi .
Fu rthe rmo re , g ood care ma y be a conditi on for sub sta ntiating a
warr anty cla im should corro sion damage or paint defect s occur .
Your authorized Audi dealer has a var iety of dedi cat ed vehicle -care
product s
and can advise which ones to use for cleaning the exterior
and interio r of your vehicle.
Whether you use products recommended by Audi or other commer ­
cially availab le cleaning agen ts, please make su re you apply them
correctly .
& WARNING
• Cleaning agents m ay be poi sonou s. Keep them out of the re ach
of childr en.
• Heed all cau tion label s.
• Alway s read direction s on the container before u sing any
produ ct. Follo w the dire ction s carefull y.
• Most chemi cal cle aner s are concentr ated and h ave to be
d iluted .
• Use spot remo ving fl uid s onl y
in well ventila ted are as.
• Do not use gasoline , kero sene , diesel fuel , nail poli sh remover
or other vol atil e fluid s. They may be to xic , fl ammab le or h azardou s
in other wa ys. Do not wa sh , wax or dry the vehicle w ith the igni ­
tion on or the engine ru nning .
& WARNING (continued )
• Do not clean the unders ide s of cha ssi s, fenders , wheel cover s,
et c. without pr ote cting y our hands and arm s. You may cut your self
on sh arp-edged metal part s.
• Moisture and i ce on brakes may impair br aking eff icien cy
~ page 237, "General information ". Test the brake s carefully each
time you wash the vehicle .
'£> For the sake of the environment
Select only environmenta lly friend ly c leaning products. Leftover
clean ing products should not disposed of in the household waste .•
Care of exterior
Washing
F requent washing protects the vehicle.
The best protection against environmental influences is frequent
washing a nd waxing. How often this is required depends on :
• How much the vehicle is used
• Where the vehic le is pa rked (garage, in the open under trees,
etc.I
• The seasonal and weather cond itions
• Environmental influences
The longer bird dropp ings, insects, tree resin, road and industrial
grime, tar, soot, road salt and other materials remain on the vehicle
b ody, the more lasting their destructive effects will be. High temper ­
atures caused by exposure to intense sunlight intensify the corro -
sive effect, particularly when humidity is high as wel l. .,

Cleaning and protection -
----------------
•
Under certain circumstances, weekly washing may be necessary.
Under other conditions , a monthly washing and waxing may be
adequate .
After the winter, the
underside of the vehicle should be thoroughly
washed, preferably in a professional car wash.
& WARNING
Always read and heed all WARNINGS and other information
~ page 252. •
Automatic car wash
The vehicle can be washed in almost any modern auto­
matic 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 design of the
facility, the filtering of the wash water , the type of wash and care
material, etc. If the paint has a dull appearance after going through
the car wash or is scratched , bring this to the attention of the oper­
ator immediately . If necessary, use a different car wash .
Before going through a car wash, be sure to take the usual precau­
tions such as closing the windows and the roof . Factory installed
antennas must not be removed.
If 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.
& WARNING
Always read and heed all WARNINGS and other information
~ page 252. •
Washing the vehicle by hand
A lot of water is needed when washing a vehicle by hand.
-Before you start washing, make sure you have read and
understood the WARNINGS =:>
& in "General informa­
tion" on
page 252.
-First soak all dried dirt until it is soft, then rinse it off.
- As you clean your vehicle, start with the roof and work
your way down to the bottom, using a sponge, a sponge
glove or a clean brush.
- Rinse the sponge or the sponge glove often, flushing it
clean each time.
- Use special car shampoo only for very persistent dirt.
- Rinse the car thoroughly with water.
- Use a chamois leather to gently w ipe the exterior dry.
Use a separate sponge for cleaning the wheels , door sills and other
regions exposed to road dirt. In this way, you will not scratch the
paint with coarse particles imbedded in the sponge the next time
you wash the car.
& WARNING
• Do not clean the underside of the chassis, fenders, wheel
covers, or other hard to reach parts without protecting your hands
and arms. You may cut yourself on sharp-edged metal parts.
• Always read and heed all WARNINGS and other information
~page252. _..
Vehicle care I t •

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Cast (light) alloy wheels
Cast (light) alloy w heels require special care.
- Wash the wheels with a sponge or hose brush every
o th er week .
- For deep cleaning afte rwards, use only a dedicated
acid ­
free
cast a lloy wheel c leaner.
- Rub a coat of
liquid wa x onto the rims every t hree month.
Be sure to reac h and treat all parts of the rim.
To preserve the decorative appearance of the cast alloy wheels,
some special care is necessary. In add ition to road dirt and salt,
brake dust is also corrosive . If left on for too long, brake dust can
cause p itting.
Use on ly spec ial
acid -free cleaners formu lated for a lloy rims . Safe
products are available at your authorized Audi dealer. Never leave
t he cleaner on the rims longer than specif ied on the label. If not
rinsed off promptly, the acid contained in some cleaners can attack
t he threads on t he wheel bolts.
Never use abrasive or metal po lishing c leaning agents . If the protec ­
t ive coating has been chipped, e.g . by kicked up road dirt, touch it
up as soon as possible.
& WARNING
• Moi sture and ice on b rake s ma y affe ct b raking effi cienc y
=> page 23 7, " General information ". Te st the brakes carefully ea ch
t ime you wa sh the vehi cle .
• Always read and heed all WARNINGS and other informat ion
=> page 25 2. •
Body cavity sealing
T he body c avity se aling does n ot need to be c hecked .
All body cavities which could be affected by corrosion have been
th or ough ly pro tected at the factory .
T his sealing does not require any inspection or additional treat ­
ment . If any wax should seep out of the cavity when the ambient
temperature is high, it can be removed with a p lastic scraper and a
suitable solvent.
& WARNING
Solvent s can be dangerou s.
• Ben zine is flamm able and to xic . 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 do wn se w age
drains .
• Be sure to observe all safet y and env ironmental regulations .
Follow all in stru ctions on the conta iner .
• Alway s read and heed all WARNINGS and other info rm ation
=> page 2 52 . •
Chassis
Have the underc oating checked for damage from time to
time.
T he lower body shell of your Audi is also thoroughly protected
against corrosion.
Any damage to the undercoating ca used by r oad ha zards shou ld be
repaired promp tly .
& WARNING
Too much undercoating in the wrong pla ces can cause a fire .

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entire engine compartment and plenum panel should be thor­
oughly cleaned at t he end of winter and retreated to prevent sal t
damage . At the same time, the underside of the vehicle shou ld be
washed as we ll.
If the eng ine compartment is cleaned at any t ime with grease
removing solutions
2 l, or if you have the engine washed, the anti ­
corrosion treat ment is al most a lways removed as wel l. It is there fore
essential to hav e a long- las ting corrosion protection r eapplied to al l
sur faces, sea ms, joints a nd co mponents in the engine compar t­
ment.
& WARNING
Be awa re: The engine compartment of any motor vehi cle is a
potentially hazardou s area.
• Before working in the engine compartment , be sure to read the
information
::::> page 26 3.
• Before reaching into the front p lenum panel, always remove the
ignition key . Otherwise , the w ind shield wiper sy stem cou ld unin ­
tentionally be sw itched on, pos sibly causing personal in jury from
the moving wiper linkage .
• Never reach into the area around or touch the radiator fan . The
a uxil iary f an i s temperature controlled and can switch on suddenly
- even when the ignition is off.
• Do not wash , wa x or dry the eng ine with the e ngine running .
Moving or hot part s could injure you .
• Do not clean the underside of the chassis , fenders , wheel
c overs , or other hard to reach parts without protecting your hands
a nd arms . You may cut yourself on sharp-edged met al parts .
• Always read and heed all WARNINGS and other informat ion
=> page 2 52 . •
21 Us e on ly th e correct c lean ing solut ions. N ev er use gasolin e or di esel fuel.

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•
Tires and wheels
Tires
General notes
Tires may be the least appreciated and most abused parts
of a motor vehicle.
Tires may be the least appreciated and most abused parts of a
motor vehicle. Tires are, however, one of the most important parts
of a vehicle, particularly considering the comparative ly sma ll patch
of rubber on each tire that assures that all- important contact
between you, your vehicle and the road .
Maintaining the correct tire pressure, making sure that your vehicle
and its tires do not have to carry more weight than they can safely
handle, avoiding damage from road hazards and regu lar ly
inspecting tires for damage inc luding cuts , slashes irregular wear
and overa ll condition are the most important things that you can do
to help avoid sudden tire failure including tread separation and
b lowouts .
Avoiding dama ge
If you have to drive over a curb or similar obstacle, drive very slow ly
and as close as possible at a right angle to the curb.
A lways keep chemica ls includ ing grease, oil, gasoline and brake
f luid off the tires.
I nspec t the tires regularly for damage (cuts, cracks or blis ters, etc.l.
Remove any foreign bodies embedded in the treads.
Storing tires
Mark tires when you remove them to indicate the direction of rota ­
tion . This ensu res you to be ab le to mount them correctly when you
reinstal l them. When removed, the wheels or tires shou
ld be stored in a coo l, dry
and preferably dark place.
St ore t ires in a vertical posit ion if they a re not mounted on rims, in
a horizontal position if they are mounted on rims.
New tire s
New tires have to be broken in~&.
The tread dep th of new tires may va ry, according to the type and
make of tire and the tread pattern.
Hidden d ama ge
Damage to tires and rims is often not readily visible. If you notice
unusua l vibration or the vehicle pul ls to one side, this may indicate
that one of the tires has been damaged . The tires must be checked
immed iately by an authorized Audi dealer or qualified workshop .
Unidire ction al tir es
A unidirectio nal tire can be iden tif ied by arrows on the s idewa ll, that
point in the direction the tire is designed to rotate. You must follow
the specified direction of ro tation . This is necessary so that these
tires can deve lop their optimum characteristics regarding grip, road
noise, wear and hydroplaning resistance . For more information
~ page 318.
in. WARNING
Ne w tire s or tire s that are old , worn or damaged cann ot pro vide
m aximum cont rol and braking ability.
• New tires tend to b e slippery and mu st also be broken-in . To
redu ce the ri sk of lo sin g control , a colli sion and seriou s per sonal
inj uries , dri ve wi th spe cia l c are for t he first 350 m iles ( 560 km l.
• Driving with worn or damaged t ire s can lead to lo ss of co ntrol ,
s udd en tire failure , in clu ding a blowout a nd sudden deflation , .,,_
Vehicle care
I t •

-~_T_ ir_e_ s_ a_ n_d _ w_ h_ e_e _l_s _________________________________________________ _
& WARNING (continued)
crashes and serious personal injuries . Have worn or damaged tires
replaced immediately.
• Tires age even if they are not being used and can fail suddenly,
especially at high speeds. Tires that are more than 6 years old can
only be used in an emergency and then with special care and at
low speed.
Glossary of tire and loading terminology
Accessory weight
means the combined weight (in excess of those standard items
which may be replaced) of automatic transmission, power steering,
power brakes, power windows, power seats, radio, and heater, to
the extent that these items are available as factory-installed equip­
ment (whether installed or not).
Aspect ratio means the ratio of the height to the width of the tire in percent.
Numb ers of 55 or lower indicate a low sidewall for improved
steering response and better overall handling on dry pavement.
Bead
means the part of the tire that is made of steel wires, wrapped or reinforced by ply cords and that is shaped to fit the rim.
Bead separation means a breakdown of the bond between components in the bead.
Cord
means the strands forming the plies in the tire.
& WARNING (continued)
• Never mount used tires on your vehicle if you are not sure of
their "previous history." Old used tires may have been damaged
even though the damage cannot be seen that can lead to sudden
tire failure and loss of vehicle control.
• If you notice unusual vibration or if the vehicle pulls to one side
when driving, always stop as soon as it is safe to do so and check
the wheels and tires for damage . •
Cold tire inflation pressure
means the tire pressure recommended by the vehicle manufacturer
for a tire of a designated size that has not been driven for more than
a couple of miles (kilometers) at low speeds in the three hour period
before the tire pressure is measured or adjusted.
Curb weight means the weight of a motor vehicle with standard equipment
including the maximum capacity of fuel, oil, and coolant, air condi­
tioning and additional weight of optional equipment.
Extra load tire
means a tire design to operate at higher loads and at higher infla ­
tion pressures than the corresponding standard tire. Extra load tires
may be identified as "XL",
"xi", "EXTRA LOAD", or "RF" on the side ­
wall.
Gross Axle Weight Rating ("GAWR")
means the load-carrying capacity of a single axle system, measured
at the tire -ground interfaces.
Gross Vehicle Weight Rating ("GVWR"l
means the maximum total loaded weight of the vehicle.

__________________________________________________ T_ ir_e_ s_ a_ n_d _ w_ h_ e_ e_l_s __ l9III
•
T he correct tire pressure for the spare wheel is located on a label
either on the driver's side B -pi llar or inside the fuel filler flap.
Because technical changes may be made to vehicle equipment
during the mode l year, always compare the tire size designation on
the tire pressure label on your vehicle with the tires on your vehicle. Make sure that the tire size information on the vehicle labe l is the
same as the size of the tires on the vehicle. This is especially impor­
tant if the vehicle belongs to someone else or you bought the
vehic le with different rims/tires or you bought the vehicle as a previ ­
ously owned vehicle.
Remember, your safety and that of your passengers a lso depends
on making sure that load l imits are not exceeded. Vehicle load
includes everybody and everything in and on the vehicle . These load
limits are techn ically referred to as the vehicle's Gross Veh icle
Weight Rating ("GVWR"l. The Gross Axle Weight Rating ("GAWR"l is
the maximum load that can be applied at each of the vehicle's two axles. The Gross Vehicle Weight Rating and the Gross Axle Weight
Rating are l is ted on t he safety compliance sticker labe l located
either on the driver's side B-pillar or on the inside of the fuel fi ller
flap. The ti re pressure labe l on your Audi lists the maximum
combined weight of a ll of the occupants and luggage or other cargo
t hat the vehic le can carry. For the location of the tire pressure label
=>
page 291, fig. 229.
& WARNING
O verl oad ing a vehi cle can c ause lo ss of vehi cle co ntrol , a cras h or
other ac cident , seriou s per sonal injur y, and even death .
• Carry ing m ore w eight t han yo ur vehic le was designed t o carry
will p revent the vehicle from ha ndling properl y and increa se the
ri sk o f a loss of vehi cle co ntrol.
• The br ake s on a ve hicle tha t has been o verloaded may not be
a bl e to st op the veh icle with in a sa fe di stan ce .
• Tires o n a veh icle th at ha s been ov erlo aded ca n fail sudd enl y
ca usin g l oss of co ntrol an d a c rash.
& WARN ING (c ontinued )
• Always m ake sure that the total load being tr ansported -
in cluding the weight of a trailer hitch and the t ongue we ight of a
loaded trailer -do es not m ake the vehicle he avier tha n th e
v ehi cle's Gr oss Vehi cle Weight R ating .
& WARNING
• In corre ct t ire pre ssure s an d/o r underi nfl atio n can lead to a
s eriou s or fatal a ccident.
• In corre ct tire pr essures and/or u nde rin fla tion cau se in cre as ed
tire wear and can affect th e handlin g of the vehicl e.
• Inc orre ct t ir e pre ssu res and /or underinfl ation can a ls o l ead to
s udden tire failure , including a blowout and sudden d eflation ,
ca usi ng loss of vehi cle contr ol. •
Checking tire pressure
The correct tire pressure for the tires originally installed
on your vehicle is listed on the tire pressure label located
either on driver's side B-pillar or inside the fuel filler flap .
The recommended tire pressures are on the ti re pressure label and
in the table=>
page 291, "Cold tire inflation pressure".This means
that the pressure must be checked and adjusted when the tire has
not been driven for more than a couple of mi les (kilometers) at low
speeds during the previous three hours. Air in the tires expands
when the tire heats up as a result of internal friction as i t flexes in
use. The tire pressure is higher when the tire has warmed up than
when it is "cold ."
It is the inflation pressure in a "cold" tire that counts. Therefore, you
should never let air out of a warm tire to match "Co ld tire inf lation
pressure" recommendations=>
page 291. The tires wou ld then be
underinflated and could fail suddenly. .,_
Vehicle care I t •