2011 AUDI A6 ECU

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• Adjust the tire press ure to the load you are ca rry ing .
• Reins tall the valve s te m ca p on the v alve .
When should I check the tire pressure?
The cor rect tire p ress ure is especially importa nt a t hi gh s peeds . The
pressu re s ho ul d therefore be c hecked at least once a month and
always befor e sta rt ing a jou rney . Do not fo rget to ch eck the tire pr es­
sure for the spare wheel=>
page 319.
When should I adjust the tire pressures?
Adjust t he tire pressure to the loa d you are ca rry ing . After chan ging a
w hee l or replac ing w heels yo u hav e to adjust the t ire press ures on all
w heels. I n add it io n, you m ust then store th e new t ire pressures in the
t ire press ure moni toring system *=>
page 31 6.
& WARNING
Incorrect tire pressures and /or underinflation can lead sudden tire
failure , loss of control , collision , serious personal injury or even
death .
• When the warning symbol appears in the instrument
cluster, stop and inspect the tires. • Incorrect tire pressure and/or underinflation can cause
increased tire
wear and can affect the handling of the vehicle and
stopping ability.
• Incorrect tire pressures and /or underinflation can also lead to
sudden tire failure , including a blowout and sudden deflation ,
causing loss of vehicle control.
• The driver is responsible for the correct tire pressures for all
tires on the vehicle. The applicable pressure values are located on
a sticker on the driver 's side 8-pillar.
• Only when all tires on the vehicle are filled to the correct pres­
sure, the tire pressure monitoring system* can work correctly .
• The use of incorrect tire pressure values can lead to accidents or
other damage . Therefore it is e ssential that the driver observe the
Safety first
& WARNING (co ntinued )
specified tire pressure values for the tires and the correct pres­
sures for the function of the tire pres sure monitoring system*.
• Always inflate tires to the recommended and correct tire pres­
sure before driving off.
• Driving with underinflated tires bend more , letting them get
too hot re sulting in tread separation, sudden tire failure and loss
of control.
• Excessive speed and /overloading can cause heat build-up,
sudden tire failure and loss of control.
• If the tire pressure is too low or too high, the tires will wear
prematurely and the vehicle will not handle well.
• If the tire is not flat and you do not have to change a wheel
immediately, drive at reduced speed to the nearest service station
to check the tire pressure and add air as required .
0 Note
Driv ing witho ut valve stem caps can cause damage to the t ir e valves.
T o preven t this, a lways make sure th at fa ct o ry insta lled va lve stem
caps on all wheels are s ecure ly m ou nted on t he v alve .
<£> For the sake of the environment
Under infla ted ti res will also increase t he fue l cons umption .•
Tires and vehicle load limits
Th ere a re limits to the amo unt of load or weight that a ny vehicle and
any tire can ca rry . A veh icle t hat is overloaded w ill not handle well and
is mo re diffic ult to s top . Ove rloading can no t only lead to loss of
vehicle contro l, but can also damage important parts o f the ve hicle
a nd can le ad t o sud de n tir e fa ilure, incl uding a blowout and su dden
deflation t hat can cause the vehicle to crash . .,_
Vehicle care Technical data

What do I do now? -______________________________ ____::..:..:..:..::..::....::..::.....::.....:::...::,_ __ __,J
& WARNING (continued)
• Never start or run the engine while the vehicle is supported by
the jack.
• If you must work under the vehicle, always use safety stands
specifically designed for this purpose.
• Never use the hexagonal socket in the handle of the screw­
driver to loosen or tighten the wheel bolts.
• Always make sure the spare tire and even a flat tire are secured
in place and not loose, otherwise they could fly forward, causing
personal injury to passengers in the vehicle in an accident or
sudden maneuver. •
Tools
The vehicle tools are stored in the luggage compartment
behind the right-side trim panel.
-
The onboard tool kit includes:
• Hook for removing wheel covers*
• Wheel bolt wrench
• Alignment pin for changing wheels
• Screwdrive r with reve rsible blade
Fig. 225 Luggage
compartment: vehicle
tool kit
Vehicle OP-eration
• Towing eye
[ i] Tips
Some of the onboard items listed above are provided on certain
models only or are optional extras. •
Spare wheel
The spare wheel is stored in the wheel well underneath
the floor panel in the luggage compartment.
Fig. 226 Luggage
compartment spare
wheel
Your vehicle is equipped with a regular spare wheel. It is held
in place by plastic retaining knurled screw .
Taking out the spare wheel
- Raise the floor panel at the plastic handle.
- Securely engage the handle in the luggage compartment
seal as illustrated to keep the floor panel up.
Unscrew the knurled retainer bolt in the wheel center
=> fig. 226. Turn it counter-clockwise.
- Take out the spare wheel.
Vehicle care Do-it-yourself service iTechnical data

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- Disengage and lower the floor panel before you close the
luggage compartment lid again.
Storing the replaced wheel
-Place the replaced wheel inside the spare wheel well in the
luggage compartment.
Tighten the knurled retaining screw clockwise to secure
the wheel in place.
- Disengage and lower the floor panel before you close the
luggage compartment lid again.
& WARNING
Loose items in the passenger compartment can cause serious
personal injury during hard braking or in an accident.
• Never store the spare wheel or jack and tools in the passenger
compartment.
• Always store all jacking equipment, tools, and the spare wheel
in the luggage compartment.
• Tighten the knurled retaining screw for the spare wheel
securely.
[ i] Tips
Check the inflation pressure of the spare tire periodically to keep the
tire ready for use.•
Changing a wheel
Before changing a wheel
Observe the following precautions for your own and your
passenger's safety when changing a wheel.
- After you experience a tire failure, pull the car well away
from moving traffic and try to reach
level ground before
you stop :::> & .
- All passengers should
leave the car and move to a safe
location (for instance, behind the guardrail) :::>& .
- Engage the
parking brake to prevent your vehicle from
rolling unintentionally:::> &.
- Move
selector lever to position P :::> & .
- If you are towing a trailer: unhitch the trailer from your
vehicle.
- Take the
jack and the spare tire out of the luggage
compartment:::>
page 318.
& WARNING
You or your passengers could be injured while changing a wheel if
you do not follow these safety precautions:
• If you have a flat tire, move a safe distance off the road. Turn
off the engine, turn the emergency flashers on and use other
warning devices to alert other motorists.
• Make sure that passengers wait in a safe place away from the
vehicle and well away from the road and traffic.
• To help prevent the vehicle from moving suddenly and possibly
slipping off the jack, always fully set the parking brake and block
the wheel diagonally opposite the wheel being changed. When
one front wheel is lifted off the ground, placing the Automatic
~

What do I do now? Ill
----------------
& WARNING (con tinued)
Trans missio n in "P " (Pa rk) w ill not pre ve nt the vehicle from
mo ving .
• Befo re you ch an ge a wheel , be s ure the ground i s le ve l an d
firm . If ne cess ary, us e a sturdy b oard und er the jack.
• Aft er in st a llin g the sp are wheel , make sure that you repl ace
the flat tire /wheel in it s storage area prop erly and tight en the
knurled ret ain ing s crew se cu rel y.•
Changing a wheel
When you change a wheel, follow the sequence described
below step-by-step and in exactly that order .
1. Activate the vehicle jack mode (only vehicles with Adaptive
Air Suspension) =>
page 170.
2. Remove the decorative wheel cover *. For more details see
also =>
page 322, "Decorative wheel covers" .
3 . Loosen the
wheel bolts => page 322.
4. Locate the proper mo unti ng point for the jack and align
the jack below that point=>
page 323.
5. Lift the car with the jack=> page 323.
6. Remove the wheel with the flat tire and then install the
spare =>
page 324.
7. Tighten all wheel bolts lightly.
8 .
Lower the vehicle with the jack.
9. Use the wheel bolt wrench and
firmly t ighten all wheel
bolts =>
page 322.
10. Replace the decorative wheel cover *.
Safety first
1 1. Deactivate the vehicle jack mode (only vehicles with
Adaptive Air Suspens ion) =>
page 170 .
& WARNING
Alwa ys re ad and f ollow all WARNINGS and information ~ & in
" Ra ising the vehicl e" on pag e
32 3 and ~ pag e 325. •
After changing a wheel
A wheel change is not complete without the doing the
following .
-Store and secure the wheel you replaced in the spare
wheel well .
- Replace the tools and the jack in the ir proper location.
- Check the tir e pr essur e on the spare wheel immediately
after mounting it .
- As soon as possib le, have the
tighten ing torques on a ll
wheel bolts checked with a torque wrench . The correct
tightening torque is 90 ft lb (120 Nm) .
- Have the flat tire
replaced as soon as possible.
[ i ] Tips
• If you not ic e that the wheel bolts are corroded and difficu lt to turn
wh ile chang ing a tire, they should be replaced before you check the
tightening torque .
• Drive at reduced speed until you have the tighten ing torques
checked. •
Vehicle care Do-it-yourself service Technical data

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An unstable surface under the jack can cause the vehicle to slip off the
jack. Always provide a firm base for the jack on the ground .
If neces­
sary place a sturdy board or similar support under the jack. On hard,
slippery surfaces (such as tiles) use a rubber mat or similar to prevent
the jack from slipping=> &.
& WARNING
• You or your passengers could be injured while changing a
wheel if you do not follow these safety precautions:
-Positioning the jack under the vehicle at any other place than
those indicated above may damage the vehicle or may result in
personal injuries.
- A soft or unstable surface under the jack may cause the
vehicle to slip off the jack. Always provide a firm base for the
jack on the ground. If necessary, use a sturdy board under the
jack.
- On hard, slippery surface (such as tiles) use a rubber mat or
similar to prevent the jack from slipping.
• To help prevent injury to yourself and your passengers: -Do not raise the vehicle until you are sure the jack is securely
engaged.
- Passengers must not remain in the vehicle when it is jacked
up.
- Make sure that passengers wait in a safe place away from the
vehicle and well away from the road and traffic.
- Make sure jack position is correct, adjust as necessary and
then continue to raise the jack. •
Taking the wheel off/installing the spare
Follow these instructions step-by -step for changing the
wheel
Fig. 231 Changing a
wheel: using the
screwdriver handle
(with the blade
removed) to turn the
bolts
Fig. 232 Changing a
wheel: alignment pin inside the top hole
After you have loosened all wheel bolts and raised the vehicle
off the ground, remove and replace the wheel as follows:
Removing the wheel
- Use the hexagonal socket in the screwdriver handle to
completely remove the topmost wheel bolt and set it
aside on a
clean surface => fig. 231.

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• Have the wheel bolt tightening torque checked with a torque
wrench as soon as possible by your authorized Audi dealer or a qual­ ified service station.
• With steel and alloy wheel rims, the wheel bolts are correctly
tightened at a torque of 90
ft lb (120 Nm).
• If you notice that the wheel bolts are corroded and difficult to
turn while changing a tire, they should be replaced before you check
the tightening torque.
• Replace the flat tire with a new one and have it installed on your
vehicle as soon as possible. Remount the wheel cover.
Until then, drive with extra care and at reduced speeds.
& WARNING
• If you are going to equip your vehicle with tires or rims which
differ from those which were factory installed, then be sure to
read the information =>
page 307, "New tires and replacing tires
and wheels".
• Always make sure the damaged wheel or even a flat tire and
the jack and tool kit are properly secured in the luggage compart­
ment and are not loose in the passenger compartment.
• In an accident or sudden maneuver they could fly forward,
injuring anyone in the vehicle.
• Always store damaged wheel, jack and tools securely in the
luggage compartment. Otherwise, in an accident or sudden
maneuver they could fly forward, causing injury to passengers in
the vehicle. •

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Connect POSITIVE(+) to POSITIVE(+) (red)
- Open the red cover o n the posi tive po le => page 333,
fig . 237 .
1. Connect one end of t he positive cable (red) on the
jump
start bolt=>
page 333, fig. 238 (D (B olts under red cove r
= "positive") of t he vehicle to be star ted @.
2. Con nect t he ot her end to t he positive terminal @ of t he
booster battery @.
Connect NEGATIVE(-) to NEGATIVE(-)
(black)
3 . Co nnect one end to th e n egative t ermin al@ of t he
b oost er batter y@ .
4. Con nect the o ther e nd of th e nega tiv e cabl e (b la ck) to the
jump start bolt© (Bolts wi th hex hea d= "n ega tiv e") of
the v ehic le t o b e sta rted
@ .
Starting the engine
- S ta rt the e ngi ne of t he ve hic le with the booster battery.
R un the e ngi ne at a moderate speed.
- Star t engi ne wi th discha rged vehi cle battery in the usual
ma nner.
- If the engine fails to start: do not keep t he star ter
c ran kin g f or l onge r tha n 1 0 seco nds . W ait f or a bo ut
3 0 seco nds an d the n try aga in .
- Wi th eng ine ru nn ing , rem ove jum per cables from bot h
v ehic les i n the exact
re ve rs e orde r.
- C lose the red cover on the posi tive po le.
The battery is vented to the outside to prevent gases from enter ing
th e ve hicl e int erior. Ma ke sure th at th e jum per cl amp s are well
connected w ith t he ir
metal parts in full contact w ith the batte ry
terminals .
& WARNING
To avoid serious personal injury and damage to the vehicle, heed
all warnings and instructions of the jumper cable manufacturer. If
in doubt, call for road service.
• Jumper cables must be long enough so that the vehicles do not
touch.
• When connecting jumper cables , make sure that they cannot
get caught in any moving parts in the engine compartment .
• Before you check anything in the engine compartment, always
read and heed all WARNINGS~
page 271, "Engine compart­
ment ".
0 Note
Improper hook-up of jumpe r cables can ruin the generator.
• Always connect POSI TIVE(+) to POSI TIV E(+ ), and NEGA TIVE( -)
to NEGATIVE( -) ground post of the batte ry manage r contro l unit.
• Check t hat all sc rew p lugs on the battery cells are screwed in
firmly . If not, tighten plugs prior to co nnecting clam p on negative
battery terminal.
• P lease note th at the p roce dure for connec ting a jumper cab le as
described
a bove ap pli es specifically to the case o f yo ur vehicle be ing
jump starte d. When you are giving a j ump sta rt to anot her vehicle, do
not con nect the negative (-) cab le to t he negat ive (-) termina l on the
discharged battery ©~
page 333, fig. 238. Instea d, secure ly
c o nnec t the neg ative (- ) cable to ei ther a soli d met al c o m ponen t that
is firm ly bolted to the eng ine b lock or to the eng ine b lock itself .
If the
b att ery th at is being ch arged does not
ven t to th e ou tside, es caping
battery gas could ignite and exp lode! •

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- Attach the winch hook to the rear tow line eye previously
installed .
[I] Tips
Check carefu lly to make sure the hook -up is secure befo re moving the
car up the flatbed truck ramp. •
Lifting vehicle
Lifting with workshop hoist and with floor
jack
The vehicle may only be lifted at the lifting points illus­
tr ated.
i
\= === === ===== .:, ti!
Fig . 2 4 3 Front lifting
p oin t
Vehicle OP-eration
Fig . 2 44 R ea r li ft ing
po int
- Rea d an d heed WAR NIN G :::> & .
- Loca te lifting poi nts :::> fig. 2 43 :::> fig . 244 .
- Adjust lifti ng arms of wor kshop ho ist or floor jac k to
match vehic le liftin g po ints.
- Inse rt a rubber pad between the floor jac k/wo rksh op hoist
an d the lif ting points.
If you must lift your vehicle with a floo r jack to wo rk underneath ,
be sure the vehicle is safely supported on stand s intended for thi s
purpose.
Front lifting po int
Th e lifting point is located o n the floor pan re inforcement about at
the same level as the jack mounting point=:> fig. 243 .
Do not lift the
vehicle at the vertical sill reinfo rcement.
Rear lifting po int
Th e lifting point is located on the ve rtical reinforcement of the lower
sill for the onboard jack=:> fig . 244 .
Lifting with vehicle jack
Refer to =:> page 323.
Vehicle care Do-it-yourself service iTechnical data