2012 AUDI A8 engine

240 Tires and wheels
change. In the event of discrepancies, the tire
pressure labe l is located on the driver's side B­
p ill ar a lways takes precedence.
The table below lis ts the recommended cold
tire inflation pressures for the Audi model covered
by your Owner's Literature at the vehi ­
cle's capacity weight and the tire sizes instal­
l ed on the respective models as orig inal
equipment, or as a factory option.
Tire pressure
Engine Tire designation normal load condition full load condition
fronta> reara>
front rear
AS 4.2 Ii-235/55 Rla 104H XL all
ter season
a -cylinder 255/45 R19 104H XL all
season
265/40 R20 104V XL
IA8 L4.2 Ii-235/55 Rla 104H XL all
ter season
a-cylinder 255/45 R19 104H XL all
season
6.3 li­
ter12-cyl­
inder 265
/40 R20 104V XL
265/40 R20 104V
255/45 R19 104H all sea-
son PSI
35
35
33
35
35
35
36
kPA
240
240
230
240
240
240
250
PSI
32
32
30
32
32
32
32
kPA
220
220
210
220
220
220
220
PSI kPA
36
250
36 250
33 230
36 250
36 250
36 250
39 270
PSI
38
38
35
38
38
35
38
kPA
260
260
240
260
260
240
240
260
I
I
I
XL= reinforced or extra load tire. It may also appear as xl, EXTRA LOAD, or RF on the tire side­
wall.
a l nor mal load co nd it io n"'> page 238 .
The correct tire pressure for the spare wheel is
located on a label on the driver's side B-pillar.
Because technical changes may be made to
vehicle equipment during the model year, a l­
ways 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 veh icle label is the
same as the size of the tires on the vehicle.
This is especially important if the vehicle be­
l ongs to someone else or you bought the veh i­
cle with different rims/tires or you bought the
vehicle as a previously owned vehicle .
Remember, your safety and that of your pas­
sengers also depends on mak ing su re that
l oad limits are not exceeded. Vehicle load in­
cludes everybody and everything in and on the
vehicle . These load limits are technically refer- red to as the veh
icle's Gross Vehicle Weight
Rat ing ("GVWR"). The Gross Axle Weight Rat­
ing ("GAWR") 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 listed on the
safety compl iance sticke r label located on the
driver's side B-pillar. The tire pressu re labe l on
your Audi lists the maximum combined
weight of all of the occupants and luggage or
other cargo that the vehicle can carry. For the
location of the tire pressure label
¢ fig. 183.
A WARNING
Overloading a vehicle can cause loss of ve­
hicle contro l, a crash or other accident, se­
rious personal injury, and even death.
- Carrying more we ight than your veh icle
was designed to carry will prevent the

Vehicle tool kit
Vehicle tool kit and jack
The vehicle tool kit is located in the luggage
compartment under the cargo floor cover .
Fig. 192 Luggage co mpa rtmen t: ca rgo f loo r cover
fol ded upwar d
Fig. 193 Trunk lid : Vehicle too l ki t
.. Lift the cargo floo r by the plastic handle.
.. Hook the handle into the luggage compart­
men t weather strip ¢
fig. 192.
.. Remove the spare wheel to reach the vehi -
cle tool kit .
.. Remove the foam piece.
T he onboard tool kit includes:
- Hooks to remove the wheel covers* or wheel
hub covers
- Plastic hook to remove wheel bolt covers*
- Wheel bolt wrench
- Al ignment p in for changing wheels
- Screwdriver with reversible blade
- Towing loop
- Jack
Before storing the jack, make 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
¢ page 262 .

266 Fuses and bulbs
Fuse panel @ (brown)
No. Equipment
1 Headlight control switch
2 Emergency start coil (key
identification)
3 Rear door
control module
(driver's side)
5 Horn
6 Interior lights
(headliner)
Steering column lever, mul-
8
tifunction steering wheel
controls, steering wheel
I heating
10 Power steering column ad-
justment
11 Driver door control module
12 Diagnost
ic connector, light/
rain sensor
14 Power steering column ad-
justment
15 Power
steering, AC compres-
sor
16 Brake booster
Fuse panel © (black)
No. Equipment
1 Front seat heating
2 Windshield wiper
3 Front exterior lighting
4 Sun roof
5 Driver power window
6 Driver seat (pneumatic)
7 Panoramic
sunroof
8 Dynamic steering
9 Front exterior lighting
10 Windshield/headlight
wash-
er system
11 Rear power window (driver's
side)
Panoramic sunroof
Amps
5
5
7,5 15
7,5
10/5
5
7,5 10
25
20 15
Amps
30
30
30 20
30 15
20
35
30
35
30
40
Front passenger side cockpit fuse
assignment
Fig. 206 Front passe nger side cockpit: fuse pane l with
plastic bracket
Fuse panel ® (black)
No. Equipment Amps
1 Anti-theft alarm system
5
2 T
ransmission control mod-
15
ule
3 Front climate control fan 40
4 Engine supply 35
6 Engine
control module
5
7 Front passenger door con-
7,5
trol module
8 Front passenger
power win-
30
dow
9 ESC control module 10
10 E5C control modu le 25
11 Right rear power window
30
12 Front
passenger seat (pneu -
15
matics)

Fuse s and bulb s 267
Luggage compartment fuse assignment
Fig. 207 Luggage compartment: fuse pa nel with plastic bracket
Fuse panel @ (black ) Fuse panel @ (b la ck)
No . Equi pment Amps No. Equipment Amps
[ru button, data logger, diag-
11 Dynamic
steering
5
l nostic connector, BCM -1,
5
Selector lever, BCM-2 5
adaptive light ing system
Audi side assist
5
2 Networking gateway 5
Engine control module 5
3 adaptive air suspension
5
Starter 40
4 Parking system 5
Left headlight/Headlight
16 10/5
5 Steer
ing column lever
5
range control system
Suspension control system
6 5 Fuse panel @ (red ) sensor
Belt tensioners, airbag con-
No. Equipment Amps
7
trol module 5 1 Left
reversible be lt tens ione r
25
Heated washer fluid nozzles, 2 Right reversible belt ten-
25
Homelink (garage door sioner
8 opener), night vision system
5 3 Starter diagnosis 5
control module, sport differ- 4 DC/DC converter
7,5
ential, ioni zer
5 Adaptive cruise contro l 7,5
9
Electromechan ica l parking
5 Right headlight (headlight
brake contro l modu le
6 with adaptive light) 10 -
10 Rear seat heating, cooler, in-
5 7 ESC co ntrol modu le 5 ... terior rearview mirror

Fuse panel® (brown)
No. Equipment
= 11 Radio receiver
12 Rearview camera (park
ing
a id), Top view
Bulbs
Replacing light bulbs Amps
' ' 7,5
5
For your safety, we recommend that you have
your authorized Audi dealer replace burned out bulbs for you.
It is becoming increas ingly more and more
d iff icu lt to replace vehicle light bulbs since in
many cases, other parts of the car must first
be removed before you are able to get to the
bu lb. This applies especially to the light bulbs
in the front of your car which you can on ly
reach through the engine compartment.
Sheet metal and bulb ho lders can have sharp
edges that can cause serious cuts, and parts must be correctly taken apart and then prop­
erly put back together to help prevent break­
age of parts and long term damage from wa­
ter that can enter housings that have not been properly resealed.
For your safety, we recommend that you have
your authorized Audi dealer replace any bulbs for you, since your dealer has the proper tools,
the correct bulbs and the expertise.
Gas discharge lamps (Xenon lights):
Due to the high electrical voltage, have the
bulbs replaced by a qualified technician.
Headlights with Xenon light can be identified
by the high voltage sticker.
LED headlights * require no maintenance .
Please contact your authorized Audi dealer if a
bu lb needs to be replaced.
A WARNING
Contact with high-voltage components of
the electrical system and improper re­
placement of gas discharge (Xenon) head-
Fuses and bulbs
light bulbs can cause serious personal in­
jury and death.
- Xenon bulbs are pressurized and can ex­
plode when being changed.
- Changing Xenon lamps requires the spe­
cial tra ining, instructions and equip­
ment.
- On ly an authorized Audi dealer or other
qualified workshop should change the bulbs in gas discharge lamps .
A WARNING
There are parts with sharp edges on the
openings and on the bulb holders that can
cause serious cuts.
- If you are uncertain about what to do,
have the work performed by an author­
ized Audi dealer or other qualified work­
shop . Ser ious personal injury may result
from imprope rly performed wo rk.
Q) Tips
-If you must replace the light bulbs your­
self, always remember that the eng ine
compartment of any vehicle is a hazard­
ous area to work in. A lways read and
heed all WARNINGS
~page 213, Engine
compartment
Q & .
-It is best to ask your authorized Audi
dealer whenever yo u need to change a
bulb .
-
269
•
•

2 70 Emergency situations
Emergency situations
General
This chapter is intended for trained emer­
gency crews and working personnel who
have the necessary tools and equipment to
perform these ope rations.
Starting by pushing or
towing
Q;) Note
Vehicles w ith an automatic transmission
cannot be started by pus hing o r tow ing.
Starting with jumper
cables
If necessary, the engine can be started by
connecting it to the battery of another vehi­
cle.
If the engine should fail to start because of a
discharged or weak battery, the battery can be
connected to the battery of
another vehicle,
using a
pair of jumpe r cables to start the en­
g ine .
Jumper cables
Use only jumper cables of sufficiently large
cross section to carry the starter current safe­
ly. Refer to the manufacturer's specif ications.
Use only jumper cables with
insulated termi­
na l clamps which are distinctly marked:
plus(+) cable in most cases colored red
minu s(-) cable
in most cases colored black .
A WARNING
Batteries contain electricity, acid, and gas.
Any of these can cause very serious or fatal
inju ry. Follow the instructions below for
safe handling of your veh icle's battery.
- Always shield you r eyes and avoid lean­
ing over the battery whenever possible.
- A discharged battery can freeze at tem­
peratures just be low 32 °F (0 °C). Before connecting a
jumper cable, you must
thaw the frozen battery complete ly, oth­
erwise it could explode.
- Do not allow battery acid to contact eyes
or skin . Flush any contacted area with
water immediately .
- Improper use of a booster battery to start a vehicle may cause an explosion.
- Vehicle batteries generate explosive gas­
es. Keep sparks, flame and lighted ciga­
rettes away from batteries.
- Do not try to jump start any vehicle with a low acid level in the battery.
- The vo ltage of the booster battery must
also have a 12-Volt rating. The capacity
(Ah) of the booster battery should not be
lower than that of the discharged bat­
tery . Use of batteries of d ifferent voltage
or substantially different "Ah" rating
may cause an exp losion and personal in­
jury.
- Never charge a frozen batte ry. Gas trap­
ped in the ice may cause an explosion.
- Never charge or use a battery that has
been frozen. The battery case may have
be weakened.
- Use of batter ies of different voltage or
substantially different capacity (Ah) rat­
ing may cause an exp losion and injury.
The capacity (Ah) of the booster battery
should not be lower than that of the dis ­
charged battery.
- Before you check anything in the engine
compartment, always read and heed a ll
WARNINGS¢
page 213, Engine com­
partment.
«I) Note
-Applying a higher voltage booster bat­
tery will cause expensive damage to sen­
sitive electronic components, such as
contro l units, relays, rad io, etc .
- There must be no electrical contact be­
tween the vehicles as otherwise current
could already start to flow as soon as the
positive(+) terminals are connected. ..,_

@ Tips
- The discharged battery must be properly
connected to the vehicle's electrical sys­
tem. When jump start ing or charging the
battery, never connect the negative
ground cable to the battery negative post because the battery manager sys­
tem must be able to detect the battery's
state of cha rge. A lways connect the neg­
ative g round cab le to the negative
gro und post o f the battery manage r con­
trol uni t.
Use of jumper cables
Make sure to connect the jumper coble
clomps in exactly the order described below!
Fig. 2 08 Engine compartment: connecto rs for jump
start cables and charger
Fi g. 209 Jump start ing w ith the battery of another ve ­
hicle: @-booste r batte ry, @ -discharged vehicle bat ­
te ry
The procedure described below fo r connecting
jumper cab les is intended to provide a jump
start for your veh icle.
Vehicle with discharged batt ery:
.. Turn off lights and acc esso ries, move leve r
of automat ic t ransm ission to N (Neutral) o r
P (Park) and set pa rking brake .
Emergenc y situ ation s 2 71
Connect POSI TIVE(+) to POSITIVE (+ )
(red )
.. Open the red cover on the positive terminal
¢fig. 208.
1. Connect one end of the red positive cable
on the
jump sta rt bolt ¢ fig. 209 (D (bolt
under the red cover = "positive") of the ve­
hicle to be started @.
2. Co nnect th e other end to the pos itive ter-
mina l@ of the booster battery @.
Connect NEGATIVE( -) to NEGATIVE(-)
(black )
3. Connect one end of the black negative ca­ ble to the negat ive termina l@ of the
booster b attery @.
4 . Connect the othe r end to the
jump start
pin @ (bolts with hex head bolt = "nega­
tive") of the vehicle to be started @.
Starting the engine .. Sta rt the engine of the veh icle w ith the
booste r ba ttery @. Ru n the engine at a
moderate speed .
.. Start engine wit h discha rged vehicle battery
@ in the usual manner .
.. If the eng ine fails to start, do not keep the
starter cranking for longer than 10 seconds.
Wait for about 30 seco nds a nd the n try
aga in .
.. With engi ne runni ng, remove j umper cab les
from both vehicles in the exact
reverse o r­
de r .
.. Close the red cover on the positive term inal.
T he battery is vented to th e outside to p revent
gases from en ter ing the veh icle in ter io r. Ma ke
s ur e th at the j umper clamps are well connec t­
ed with their meta l parts in full con ta ct w ith
the battery term inals.
A WARNING
To avoid se rious personal injury and dam­
age to the veh icle, heed all warnings and
instructions of the jumper cable man ufac­
turer. If in doubt, call for road service .
- J umper cables m ust be long enough so
that the veh icles d o not touch.
-

272 Emergen cy sit uat ions
-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 213, 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 term inal.
- Please note that the procedure for con­
nect ing a jumper cable as desc ribed
above applies spe cifically to the case of
you r vehicle being j ump started. When
you are giving a jump star t to anothe r ve­
hicle, do
not connect the negative (-) ca ­
ble to the negat ive(-) term inal on the
discharged battery ©
c:> fig. 209. 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 t he outside, es caping 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 tr uck operators who know
h ow to operate the ir equipmen t safe ly.
- Never t ow your Audi. Towing will cau se
da mage to the engine and tr ans mi ssion .
- Ne ver wrap th e safet y chain s or winch c a­
ble s around the brake lines.
- To prevent unne ce ssa ry damage , your Aud i
must be t ran spo rted with a flat bed truck.
- To load th e vehi cle on to the fl at bed, use
the towing l oop found in the vehicle t ools
and attach to the front o r rear anchorage
c:>page 272 and c:>page 273.
.&_ WARNING
=
A vehicle being towed is not safe for pas-
sengers. Never allow a nyone to ride in a
vehicle be ing towed, for any reason.
Front towing loop
Only install the front towing loop when it is
needed.
C7
0
F ig. 210 Fr ont bumpe r: cove r
Fig. 211 Fro nt bu mpe r: sc rew ing in the towing loop
-
The towing loop fits into the threaded hole lo ­
cated on the right s ide of the front b umpe r
and covered by a sma ll cove r when not in use.
.,. Remove the tow ing loop from the vehicle
tool kit.