2012 AUDI A6 ECU

-If the ti re is not flat and y ou do not have
to change a wheel immed iate ly, drive at
reduced speed to the nearest service sta­
t ion to check the tire pressure and add
air as required.
(D Note
Dr iving without va lve stem caps can cause
damage to the t ire va lves . To prevent this,
always make sure that factory installed
valve stem caps on all wheels are secu re ly
mounted on the va lve .
@) For the sake of the environment
Underinflated tires will a lso increase the
fue l consumption.
Tires and vehicle load limits
There are limits to the amount of load or
weight t hat any veh icle and any t ire ca n car ry.
A vehicle that is overloaded w ill not handle
well and is more difficult to stop. Overload ing
can not on ly lead to loss of vehicle contro l,
but can a lso damage important parts of the
vehicle and can lead to sudden tire failure, in ­
cluding a blowout and sudden deflation that
can cause the ve hicle to crash.
Your safety and that of yo ur passenge rs a lso
depends on making sure th at load limits are
no t exceeded. Vehicle load includes everybody
and everyth ing in and on the vehicle. These
load limits a re tech nica lly referred to as the
ve hicle's
Gross Veh icle Weight Rating
("GVWR").
The "GVWR" includes the we ight of the basic
ve hicle, all factory installed accessories, a full
tank of f uel, oil, coo lant and othe r fluids plus
max imum load. The maximum load includes
the number o f passenger s that the ve hicl e is
intended to carry ("se ating capacity") w it h an
assumed weig ht o f 150 lbs (68 kg) for each
passenger at a designated seating position
and the tota l weight of any luggage in the ve­
h icle. If you tow a trailer, the weight of the
trailer hitch and the tong ue weight of the
Tire s an d wheel s 243
loaded tra ile r must be included as part of the
vehicle load .
T he
Gro ss Ax le Weight Rating (" GAWR") is
the max imum load th at can be applied at each
of the vehicle's two axles .
T he Gross Vehicle Weight Rat ing and t he
G ross Ax le Weig ht Ra ting are l iste d on the
s af ety comp liance s tic ke r la bel lo cated on the
driver's side 8 -pillar . Yo ur Audi has 5 sea ting
positions,
2 in the front and 3 in the rear fo r
total seating capacity of
5. Eac h seating posi ­
tion has a safety be lt
c> page 133 , Safety
belts.
The fact that there is an upper limit to yo ur
vehicle's Gross Vehicle We ight Rating means
that the total weig ht of whatever is being car ­
ried in the vehicle (includ ing the weight of a
tra ile r hitch a nd the tongue weight of the
loaded tra ile r) is lim ited . The more passen­
gers in the vehicle or passengers w ho are
heavier than the sta ndard we ights assumed
me an t hat less we igh t ca n be ca rried as lug ­
gage.
T he tire pr essure label on your Audi also lis ts
t h e maximum combined weight of a ll of the
occupants and l uggage or other cargo that
t h e ve hicl e can carry. For the locat ion of the
label
c> page 239, fig . 178.
.&_ WARNING
-=
Overloading a vehicle can cause loss of ve-
h icle cont ro l, a c rash or other accident, se­
rious pe rsonal injury, and even death.
- Ca rrying more we ight tha n your veh icle
was des igned to carry wi ll prevent the
veh icle from handling properly and in­
crease the risk of the loss of vehicle con­
trol.
- The brakes on a vehicle that has been
overloaded may not be able to stop the
ve hicle w it hi n a safe distance .
- Tires o n a vehicle that has been over load­
ed can fail suddenly, including a blowout
a nd sud den defla tion , causing loss of
cont rol and a crash .
li1'-
•
•

252 Tire s and wheel s
Where snow chains are mandatory oncer­
tain roads, this normally also applies to ve­
hicles with all-wheel drive.
Wheel bolts
Wheel bolts must always be tightened to the
correct torque .
The design of whee l bolts is matched to the
factory insta lled rims . If different rims are fit­
ted, the correct wheel bolts with the r ight
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
r=> page 280.
A WARNING
Imprope rly tightened o r maintained wheel
bolts can becom e loose ca using loss of
c ont ro l, a co llision and serious persona l in­
Jury .
- Always keep the w heel bolts an d the
threads in the wheel hubs clean so the
w heel bolts can turn easily and be p rop­
er ly tigh tened .
- N ever grease or oil the wheel bo lt s an d
the threads in the w heel hubs. They can
become loose while d riving if greased or
oi led, even if tightened to the specified
torq ue.
- Only use wheel bolts that belong to the
rim being installed.
- N ever use different whee ls bolts on your
vehicle.
- Alw ays maintain the co rrec t tighten ing
torq ue fo r th e wheel bo lts to reduce the
risk of a wheel loss . If the tightening tor­
que of the wheel bo lts is too low, they
can loosen and come out w hen the veh i­
cle is moving. If the tighteni ng torque is
too high, the whee l bolts and threads can be damaged and the whee
l can be­
come loose.
@ Note
The specified torque for the whee l bolts is
90 ft lb (120 Nm) with a tolerance of± 7,4
ft lb(± 10 Nm) . Torque whee l bolts diago­
nally. After changing a whee l, the torque
must be checked as soon as possible with a
torque w rench -preferably by an author­
i zed Audi dealer or qualified workshop .
Low aspect ratio tires
Your A udi is facto ry-eq uipped w it h low aspect
ra tio tires. These tires have been tho roughly
tested and been se lected specific ally fo r your
model fo r their superb perfo rmance, road fee l
and hand ling under a variety of d riving condi ­
t ions . Ask your author ized A udi dealer for
more details.
T he low aspect ratio of these tires is ind icated
by a numera l of
55 or less in the tire's s ize
designation. The n umera l represents the ratio
of the tire's sidewa ll height in relation to its
tread width expressed in percentage. Conven­
t iona l tires have a he ight/w idth rat io of 60 or
more .
The performance of low-aspect -ratio tires is
particularly sens iti ve to imp roper inflation
pressure. It is therefore important that low
a spect ratio tires are inflated to the specified
pre ssure and that the inflation pressure i s
regularly ch ecked and maintain ed. Tire pre s·
sure s should be checked at lea st once a
month and always before a long trip
r=> page 241, Checking tire pressure .
What you can do to avoid tire and rim
damage
Low aspect ra tio tires can be d amage d more
easily by impact w it h potholes, curbs, g ull ies
or ridges on t he road, particularly if the tire is
u nd eri nflated.

Vehicle tool kit
Vehicle tool kit and jack
The vehicle tool kit is located in the luggage
compartment under the cargo floor cover .
Fig. 187 Luggage co mpa rtmen t: ca rgo f loo r cover
fol ded upwar d/spare t ire
Fig . 188 Trunk lid : Vehicle too l ki t
.. Lift the cargo floo r by the plastic handle
c:> fig . 187.
.. Hook the handle in to the luggage compar t­
ment weather strip .
.. Turn the handwheel counter-clockwise
c:> fig . 187 and remove the spare tire to
reach the vehicle too l kit.
.,. Unhook the ca rgo floor before closing the
rear lid.
The onboard tool kit includes:
- Hooks to remove the wheel covers*
- Plastic hook to remove wheel bolt covers*
- Wh eel bolt wrench
- Alignment pin for changing wheels
- Screwdriver w ith reversible blade
- T owing loop
- Jack
Before stor ing the jack, m ake sure it is wound
back down as far as it will go.
What do I d o now ? 257
A WARNING
Im proper use of the vehicle jack can cause
serious personal injur ies.
- Never use the screw driver hex head to
tighten wheel bolts, since the bolts can­
not attain the necessary tighten ing tor­
que if you use the hex head, potentially
causing an accident .
- The factory-supplied jack is intended on­
ly for yo ur vehicle model. Under no c ir­
cumstances should it be used to lift heavy veh icles or other loads; you risk in­
ju ring yo urself.
- Never start the engine when the vehicle
is raised, wh ich could cause an acc ident.
- Support the vehicle securely with appro­
priate stands if work is to be performed
underneath the vehicle; otherwise, there
is a potentia l risk for injury.
- Never use the jack supplied wit h your Au­
di on another vehicle, particularly on a
heavier one. The jack is only s uitable for
use on the vehicle it came with.
(D Tips
- Some of the onboard items listed above
are provided on certain models only or
are optional ext ras .
- Before yo u can raise your vehicle using
the jack, you must activate the jacking
mode
c:!) page 261.
Space-saving spare tire (compact spare
tire )
The spare tire/wheel is located in the luggage
compartmen t under the cargo floor cover . It
is intended for short-term use only.
T a king out th e spare tir e
.. Lift t he cargo floor by the p lastic handle
<=) page 257, fig . 187 .
.. Hook the handle into the luggage compart­
ment weather strip.
.. Turn the large screw ¢
page 257, fig. 187
counter-clockwise .
.,. Take out the spare tire .

258 What do I do no w?
• Unhook the ca rgo floor before closing the
rear lid.
Securing the replaced tire
• The fault whee l will not fit inside the spare
wheel wel l. Sto re it in the luggage compart­
ment and sec ure it so that it does not slide
¢ page 59.
• Unhook the cargo floor before closing the
rear lid.
U sing the spar e tire (compact spare tir e)
The compact spare tire is on ly intended for
emergencies until you can reach a repair shop.
Replace it as quickly as possible with a stand­
ard wheel and tire.
There are some restrictions on the use of the
compact spare tire. The compact spare tire
has been designed specifically for your type of
vehicle. It must not be swapped with a com­ pact spare t ire from another type of veh icle.
Snow chain s
For technical reasons, the use of snow chains
on the compact spare tire is not permitt ed .
I f you do have to dr ive w ith snow cha ins and a
front tire fails, mo unt the spare wheel w ith
tire instead of a rear t ire. Install the snow
cha ins on the rear tire and use it to rep lace
the defective front tire .
A WARNING
-Never use the spare tire if it is damaged
or if it is worn down to the tread wear in ­
dicators.
- If the spare tire is more than 6 years o ld,
use it only in an emergency and w ith ex­
treme caution and careful driving.
- The spare tire is intended only for tem­
porary and short-term use. It should be
replaced as soon as possible w ith the
normal wheel and t ire.
- After mounting the compact spare tire,
the tire pressure must be checked as
soon as poss ible. The tire pressure of the
compact spare tire must be 4.2 bar; oth­
erwise, you risk hav ing an accident. -
Do not drive faster than 50 mph (80 km/
h). Yo u risk having an accident.
- Avoid full-thrott le acceleration, heavy
braking, and fast cornering. You risk hav­
ing an accident.
- Never drive using more than one spare
wheel and tire. You r isk having an acci­
dent.
- Normal summer or winter tires must not
be mounted on the compact spare wheel
rim.
- For technical reasons, the use of tire
chains on the spare tire is not permitted.
If it is necessary to drive with tire chains,
the spare wheel must be mounted on the
front ax le in the event of a flat in a rear
tire. The new ly available front wheel
m ust then be instal led in place of the
rear whee l w ith the flat tire. Installing
the tire chain be fore mounting the whee l
and tire is recommended.
- Loose items in the passenger compart­
ment can cause serious personal injury
during hard brak ing or in an accident.
- Never store the inflatable spare t ire or
jack and too ls in the passenger com­
partment.
- Always store all jacking equipment,
tools, and the inflatable spare t ire in
the luggage compartment.
- Tighten the knurled retai ning screw for
the inflatable spare tire securely .
Changing a wheel
Before changing a wheel
Observe the following precautions for your
own and your passenger's safety when chang­
ing a wheel .
• After you experience a t ire failure, pu ll the
car we ll away from moving traffic and try to
reach level ground before you stop
¢ ,& .
• All passengers should lea ve the car and
move to a safe location (for instance, behind
the guardrail)¢ ,&.
• Engage the parking brake to prevent your
veh icle from rolling unintentionally¢,& . ..,

• Move select or lever to p osition P q ,& .
• If you are towing a trailer, unhitch the trail­
er from your veh icle.
• Take the
jack and the spare t ir e out of the
luggage compartment
q page 257,
q page 257.
A WARNING
You or your passengers cou ld be injured
while changing a whee l if you do not fol­
low these safety precautions:
- If you have a f lat t ire, move a safe dis­
tance off the road. Turn off the eng ine,
turn the emergency f lashers on and use
other warning devices to alert o ther mo­
torists.
- Make su re that passengers wait in a safe
pla ce away from the ve hicle and well
away from the road and traffic.
- T o help preven t the veh icle from mov ing
sudden ly and possibly slipping off the
jack, always fully set the parking brake
and block the whee l diagonally opposite
the wheel being changed . When one
front wheel is lifted off the ground, plac­
ing the Automat ic Transm iss ion in "P"
(Park) will
not prevent the vehicle from
moving.
- Before you change a wheel, be sure the ground is level and fi rm. If necessa ry,
use a sturdy board under the jack.
- After installing the spa re wheel, make
sure that you replace the flat tire/whee l
in its sto rage area properly and tighten
the kn u rled re taining screw securely.
Changing a wheel
When you change a wheel, follow the se­
quence described below step-by-step and in
exa ctly that order .
-
1. Remove the decorati ve wheel cov er* . For
mo re deta ils see also
Q page 260, Deco­
rative wheel covers
o r q page 260,
Wheels with wheel bolt caps.
2 . Loosen the wheel b olts q page 260.
What do I do now? 259
3. Locate the proper mounting point for the
4.
5.
6.
7.
8.
9 .
jack and align the jack below that point
q page 261.
Raise the car with the jack q page 261.
Remove the wheel with the flat tire and
then insta ll
th e spare c> page 262.
Tighte n all wheel bolts lightly.
Lower the vehicle wi th the jack.
U se the wheel bolt w rench and
firmly
t ighten a ll wheel bolts q page 260 .
Replace the decora tive wheel co ver*.
A WARNING
A lways read and fo llow all WARNINGS and
informat ion¢
& in Raising the vehicle on
page 261
and r::> page 263.
After changing a wheel
A wheel change is not complete without the
doing the following .
• Replace the too ls and the jac k in their prop­
er locat ion .
• The fault whee l wi ll not fit inside the spare
wheel well. Store it in the luggage compart­
ment and secure it so that it does not slide
r::>page 59.
• Check the tire pressure on the spare wheel
immed iate ly after mounting it.
• As soon as possib le, have the
tightening
torqu es
on all wheel bolts c hec ked with a
t o rque wrenc h. The co rrec t tighte ning tor­
que is
90 ft lb (120 Nm).
• Have the flat tire
replaced as soon as possi ­
b le.
(D Tips
- I f you not ice that the wheel bo lts a re
corroded and difficult to turn while
changing a tire, they should be rep laced
before you check the tightening torque.
- Drive at reduced speed until you have the
tightening torques checked. ..,_
•
•

-Do not loosen the wheel bolts more than
one turn
before you raise the veh icle with
the jack. -You risk an injury.
@ Tips
- Never use the hexagonal socket in the
handle of the screwdriver to loosen or
tighten the wheel bolts.
- If a whee l bolt is very tight, you may find
it easier to loosen by carefully push ing
down on the end of the wheel bolt
wrench with
one foot only. As you do so,
hold on to the car to keep your ba lance
and take care not to slip.
Raising the vehicle
The vehicle must be lifted with the jock first
before the wheel con be removed .
Fig. 1 92 Changing a w hee l: mou nting po ints fo r the
jack
F ig . 19 3 Close -up: proper positioning of jack
.. Engage the parking bra ke to prevent your
vehicle from rolling un intentionally.
.. Move the
selector le ver to position P .
.. Position the jack below the door sill under
the
mounting point that is closest to the
wheel to be changed¢
fig. 192.
What do I d o now ? 261
.. Extend the jack under the lifting point on
the door sill until its arm is positio ned di­
rectly under the lifting point ¢,&. .
.. Align the jack so that its arm@¢
fig. 193
engages in the designated lifting point in
the doo r si ll and the movable base @ lies
flat o n the ground. The base @ must be
ver­
tical
under th e lifting point @.
.,. Wind the jack up fu rther until the f lat t ire
comes off the gro und ¢ ,&. .
The jack mus t be installed
only at the places
i ndicated ¢
fig. 192. The re is exactly one loca­
tion for each wheel. The j ack mus t not be
pos it ioned at any other location ¢
&.
An unstable surfac e under the jack ca n cause
the ve hicl e to slip off the jack. Always provide
a firm base for the ja ck on the g ro und . If nec­
essary p lace a sturdy board or sim ilar support
u nder the jack . On
hard, slippery surface s
(such as tiles) use a rubbe r mat or similar to
prevent the jack from slipping
¢ & .
A WARNING
- You or your passengers co uld be in jured
while c hanging a wheel if you do not fo l­
low these safety precautions:
- Positioning the j ack under the vehicle
at any o ther place than those indicate d
above may damage the vehicle or may result in persona l injuries .
- A soft o r uns table surf ace unde r the
j ac k may cause the veh icle to slip off
the jack. Always provide a f irm base for
the jack on the ground. If necessary, u se a st urdy board under the jack.
- On hard, slippery surface (such as ti les)
use a rubber mat or similar t o prevent
the jack fr om slipping .
- To help prevent injury to yo urself and
your passengers:
- Do not ra ise the veh icle until you are
s ur e the jack is securely engaged .
- Passe ngers must not remain in the ve­
h icle when i t is ja cke d up.

Tires with unidirectional tread design
Tires with unidirectional tread design must be
mounted with their tread pattern pointed in the right direction .
Using a sp are t ire w ith a tread p attern
int ended fo r use in a specific dir ection
When us ing a spare tire w ith a tread pattern
in tended for use in a specific direction, please
note the following:
- The direction of rotation is marked by an ar­
row on the side of the tire .
- If the spare t ire has to be installed in the in­
correct direction, use the spare tire only
temporarily since the ti re will not be able to
achieve its optimum performance character­
i st ics with rega rd to aquaplaning, noise and
wear.
- We recommend that you pay particular at­
tent ion to this fact du ring wet weathe r and
that you adjust your speed to match road conditions.
- Replace the flat tire w ith a new one and
have it installed on your veh icle as soon as
possib le to restore the handling advantages
of a unid irectiona l tire .
Notes on wheel changing
Please read the info rmation c:> page 246 , New
t ires and replacing tires and wheels
if you are
going to use a spare t ire which is different
from the tires on your veh icle.
After you change a tire :
-Check the tir e p re ss ure on th e spare imme­
di ately after in st a ll at ion.
- Have th e wheel bol t ti ghtenin g torqu e
ch ecked with a torque wrench a s soon a s
possible b y your autho riz ed Audi dealer o r
a qu alified ser vic e statio n.
- With ste el a nd alloy wheel rims , the wheel
bolts a re correctl y tightened at a torque of
90 ft lb (1 20 Nm ).
- If yo u n otice that the wheel bolt s are cor­
r oded a nd d ifficult to tu rn whil e changi ng
a t ire, the y should be replaced before you
chec k the t igh tening to rque. What do I do now? 263
- Repla ce the flat ti re w ith a new one and
h av e it i nsta lled on you r veh icle as s oon as
po ssible. Remount the whe el cov er.
Un til th en, d riv e with extr a care and at re­
duc ed sp eeds.
A WARNING
-
- If you are going to equ ip your vehicle
with tires or rims which differ from those
which were factory installed, then be sure to read the information¢
page 246,
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 com­
pa rtment and are not loose in the pas­
senger compartment .
- In an accident or sudden maneuver they
could fly forward , injuring anyone in the
veh icle.
- Always sto re damaged wheel, jack and
too ls se curely in the luggage compa rt­
ment. Otherwise , in an accident or su d­
den maneuver they could f ly forward,
causing injury to passengers in the vehi­
cle.
•
•

2 70 Emergency situations
-When connecting jumper cables, make
sure that they cannot get caught in any
moving parts in the engine compart­
ment.
- Before you check anything in the engine
compartment, always read and heed all
WARNINGS c:>
page 214, Engine com­
partment.
(D Note
Improper hook-up of jumper cables can ru­
in the generator.
-Always connect POSITIVE(+) to POSI­ TIVE(+), and NEGATIVE( -) to NEGATIVE
( - ) ground post of the battery manager
control unit.
- Check that all screw plugs on the battery
cells are screwed in firmly . If not, tighten
plugs prior to connecting clamp on nega­
tive battery terminal.
- Please note that the procedure for con­
necting a jumper cable as described
above applies specifically to the case of
you r vehicle being jump started. When
you are giving a jump start to another ve­
hicle, do
not connect the negative(-) ca­
ble to the negative(-) terminal on the
discharged battery@c:>
fig. 201. In­
stead, securely connect the negative(-)
cable to either a solid metal component
that is firmly bolted to the engine block
or to the engine block itself. If the bat­
te ry that is being charged does not vent
to the outside, escaping battery gas
could ignite and explode!
Emergency towing
with commercial tow
truck
General hints
Your Audi requires special handling for tow­
tng.
The follow ing information is to be used by
commercia l tow truck operators who know
how to operate their equipment safely.
-Never tow your Audi. Towing will cause
damage to the engine and transmission .
- Never wrap the safety chains or winch ca­
bles around the brake lines.
- To prevent unne cessary damage , your Audi
must be transported with a flat bed truck.
- To load the vehicle on to the flat bed, use
the towing loop found in the vehicle tools
and attach to the front or rear anchorage
c:>page 270 and c:>page 271.
.&_ WARNING
=
A vehicle being towed is not safe for pas-
-
sengers. Never allow anyone to ride in a
vehicle be ing towed, for any reason.
Front towing loop
Only install the front towing loop when it is
needed.
Fig. 202 Front bumpe r: cove r
Fig. 203 Front bumper: installing the towing loop
There are threads located behind the right
s ide of the front bumper where a towing loop
can be installed. The threads are located be­
hind a cover.
.,. Remove the tow ing loop from the vehicle
tool kit.