2013 AUDI A8 light

254 Tires and wheels
Bear in mind that the tire pressure monitoring
system* can only monitor the tire pressures
you have stored . The system does not recog­
nize the load condit ion of your vehicle.
The effectiveness of the tire pressure monitor ­
ing system* will be impaired if you store nor­
mal load pressures but then operate the vehi ­
cle at its max imum load
c:> &. .
See the illustration c:> fig. 204 for the location
of the label on driver's side B-pillar (color of
the act ua l label and exact location on the ve­
hicle will vary slightly). Note
that the following table is accurate at
the time of going to press and is subject to
change. In the event of d iscrepancies, the t ire
pressure label is located on the driver's side B­
pillar always takes precedence.
The table below lists the recommended cold
t ir e inflation pressures for the Audi mode l
covered by your Owner's Literature at the vehi­
cle's capacity weight and the t ire sizes instal­
led on the respective models as orig inal
equipment, or as a factory opt ion.
Tire pressure
Model/En­ gine Tire designation
normal load condition full load condition
AB/AB L: 235/55 R18 104H
3.0
liter 255/45 R19 104H
6
-cyli nd
er 265/40 R20 104H
265/40 R20 104V
275/35 R21103Y XL
AS/AS L: 235/55 R18 104H
4.0
liter 255/45 R19 104H
B-cyli nd
er 265/40 R20 104H
265/40 R20 104V
275/35 R21103Y XL
AS/AB L: 235/55 R18 104H
4.2
liter 255/45 R19 104H
B-cyli nd
er 265/40 R20 104V
ASL:
6.3 liter
12-cylin­
der
265/40 R20 104H
275/35 R21103Y XL
265/40 R20 104V
255/45 R19 104H
265/40 R20 104H
275/35 R21103Y XL
SB: 265/40 R20 104V
4.0
liter 265/35 R21101 Y
B-cyli nd
er 275/35 R21103Y XL
rearal front rear
PSI kPA PSI kPA PSI kPA PSI kPA
260
260
260
240
240
260
260
260
240
260
260
260
240
260
260
240
260
260
240
XL= reinforced or extra load tire. It may also appear as xl, EXTRA LOAD, or RF on the tire side­
wall.
•> normal load condition <=>page 253 .

256 Tires and wheels
the time it was manufactured . For the
location of the label~
page 253, fig . 204.
Most tires lose air naturally over time. They
can also lose some air if you drive ove r a pot­
hole or hit a curb while parking . It is usually
not possible to see whether the radial tires
used today are under inflated just by looking
at them.
Therefore, be sure to check tire pressures at
least once a month and always before going
on a long tr ip. Make sure to take the number
of people and the amount of luggage into ac­
count when adjusting tire pressure for a trip -
even one that you would not consider to be
"long." See~
page 257, Tires and vehicle
load limits
for more important information.
Always use an accurate tire pressure gauge
when checking and adjusting inflation pres­
sures. Check all of the tires and be sure not to
forget the spare t ire. If the pressure in any tire
is too high when the tire is "cold," let air out
of the tire slowly with the edge of the tire
gauge and keep checking the pressure until
you reach the pressure that is correct for the
l oad (passengers and luggage) and kind of
driving you plan to do.
If the pressure in any tire is too low, note the
difference between the pressure in the cold
tire and the pressure you need and add the air
that you need to reach the correct pressure for
the vehicle load (passengers and luggage) for
the tires on your vehicle as listed on the on
your veh icle and in this manual and the kind
of dr iving you plan to do .
Never exceed the maximum inflation pres­
sure listed on the tire sidewall for any rea­
son.
Remember that the vehicle manufacturer, not
the tire manufacturer, determ ines the correct
tire pressure for the tires on your vehicle.
It is important to check the tire pressure when
the tires are cold.
- Read the req uired ti re pressure from the tire
pressure label. The tire pressure label is lo ­
cated on the driver's side B-pi llar . -
Tu rn the va lve stem cap counter -clockwise
to remove it from the tire va lve .
- Place the air pressure gauge on the va lve.
- The tire pressu res should only be checked
and adjusted when the tires are cold. The
slightly raised pressures of warm tires must
not be reduced.
- Adjust the tire pressure to the load you are
carrying.
- Reins tall the valve stem cap on the valve.
When should I check the tire pressure?
The correct tire pressure is especially impor­
tant at high speeds. The pressure should
therefore be checked at least once a month
and always before starting a jour ney. Do not
f orget to check the tire pressure for the spare
whee l
~page 272.
When should I adjust the tire pressures?
Adjust the tire pressure to the load you are
carrying. After changing a wheel
or replacing
whee ls you have to adjust the tire pressures
on all whee ls. In addition, you m ust then
store the new tire pressures in the tire pres­
sure monitoring system*~
page 267.
A WARNING
Incorrect tire pressures and/or underinfla­
tion can lead sudden tire fa ilure, loss of
control, collision, serious personal injury
or even death.
- When the warning symbol
Rt] appears in
the instrument cluster, stop and inspect
the tires.
- Incorrect tire pressure and/or underinfla­
tion can cause increased tire wear and
can affect the handling of the vehicle and
stopping abi lity.
- Incorrect tire pressures and/or underin­
flation can also lead to su dden t ire fail­
ure, including a blowout and sudden de­
flation, causing loss of veh icle control.
- The driver is responsible for the correct
tire pressures for all tires on the vehicle.
The applicable pressure values are locat­ ed on a sticker on the driver's side B-pil-
la~
~

268 Tires and wheels
and may affect the vehicle's handling and
stopping ability.
Please note that the TPMS is not a substitute
for proper tire maintenance, and it is the driv­
er's responsibility to maintain correct tire
pressure, even if under-inflation has not
reached the level to trigger illumination of the
TPMS low tire pressure telltale .
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate when
the system is not operating properly. The
TPMS malfunction indicator is combined with
the low tire pressure telltale. When the sys­
tem detects a malfunction, the telltale will
flash for approximately one minute and then
remain continuously illuminated. This se­
quence will continue upon subsequent vehicle
start-ups as long as the malfunction ex ists.
When the malfunct ion indicator is illuminat­
ed, the system may not be able to detect or
signal low tire pressure as intended . TPMS
malfunctions may occur for a variety of rea­
sons, including the installation of replace­
ment or a lternate tires or whee ls on the vehi­
cle that prevent the TPMS from functioning
properly. Always check the TPMS malfunction
telltale after replacing one or more tires or
wheels on your vehicle to ensure that the re­ placement or alternate tires and wheels allow
the TPMS to continue to function properly.
Tire pressure indicator appears
App lies to vehicles: with tire pressure monitoring system
The tire pressure indicator in the instrument
cluster informs you if the tire pressure is too
low or if there is a system malfunction .
Fig. 209 Display: underinflation warning
Fig. 210 Disp lay: System malfunction
Using the ABS sensors, the tire pressure moni ­
toring system compares the tire tread cir cum­
ference and vibration character istics of the in ­
dividua l tires. If the pressure decreases in one
o r more t ires, this is ind icated in the instru­
ment cluster with a warning symbol
[«E and a
message ~
fig. 209.
The tire pressure monitoring system must be
reset via MMI each t ime the press ures are ad­
justed (e.g. when switching between partial
and full load pressure) or after changing or re­
placing a tire on your vehicle
c::> page 269. The
TPMS indicator only monitors the tire pres­
sure that you have previously stored. You can
find the recommended tire pressures for your
vehicle on the label on driver's side 8-pillar
c::> page 2 53.
Tire tread circumference and vibration charac­
teristics can change and cause a tire pressure
warning if:
- the tire pressure in one or more tires is too
low,
- the tire has structural damage ,
- the tire pressure was changed, wheels rotat-
ed or replaced but the TPMS was not reset
c::> page269.
Warning symbols
[tE Loss of pressure in at least one tire c::> ,1,. .
Check the tire or tires and replace or repair if
necessary. The indicator light
[tE in the instru­
ment cluster also illuminates
c::> page 11.
Check/correct the pressures of all four tires
and reset TPMS via MMI.
119;~, < T ire Pressure Monitoring System) Tire
pressure! System malfunction .
IJJ,-

If llil~, appears after switching the ignition
on or whi le driving
¢ fig. 210 and the indica­
tor light
ltJ in the instrument cluster blinks
for approximate ly one minute and then stays
on, there is a system malfunction .
Attempt to store the correct tire pressure
¢
page 269. If the indicator light does not
turn off or if it turns on short ly thereafter, im­
mediately drive your vehicle to an authorized
Audi dealer or authorized repair facility to have the malfunction corrected .
A WARNING
-If the t ire pressure indicator appears in
the instrument cluster d isplay, one or
more of you r tires is s ignificantly under­
inflated. Reduce your speed immediately
and avoid any hard steering or braking
maneuvers. Stop as soon as possible and
check the t ires and the ir pressures. In­
flate the tire pressure to the proper pres­
sure as indicated on the vehicle's tire pressure label ¢
page 253. Driving on a
significantly under -inflated tire causes
the tire to overheat and can lead to tire
failure. Under-inflation also is likely to
impair the vehicle 's handling and stop­
ping ability.
- T he driver is responsible for ma inta ining
the corre ct tire pressures. You m ust
check the t ire pressures regularly .
- Under certain cond itions (such as a spor­
ty driving style, w inter condit ions or un­
paved roads) , the pressure monitor indi­
cator may be de layed .
- Ask your author ized Audi dealer if run ­
flat tires may be used on your vehicle.
Your vehicle regist rat ion becomes invalid
if you use these tires when not permit­
ted. Damage to your veh icle or acc idents
cou ld also resu lt.
(D Tips
- The tire pressure monitoring system
stops working when there is an ESC/ABS
malfunction.
Tire s an d wheel s 269
- Us ing snow chains may res ult in a system
ma lfunction.
- T he tire pressure mon itor ing system on
your Audi was deve loped using tires with
the "AO" or "RO" identification on the
t ire s idewall
c:> page 260. We recom­
mend us ing these tires.
Reset tire pressure monitoring system
App lies to vehicles: wit h tire press ure mo nitor ing system
If the tire pressure is adjusted, wheels are ro­
tated or changed, the TPMS must be reset via
MMI.
.,. Switch on the ignition.
.,. Select in the MMI: ICAR lfunction button>
Ca r sy stems control button > Servicing &
checks > Tire pressure monitor ing > Store
t ire pr essur es> Yes, store now .
(D Tips
Do not store the tire pressure if there are
snow cha ins on the tire .
•
•

274 What do I do now ?
-Always store the vehicle tool kit, the jack
and the replaced t ire in the luggage com­
partment ¢
page 140.
@ Tips
Before changing the wheel, yo u m ust acti­
vate t he jac king mode, so t hat the auto­
mat ic cont rols fo r the Adaptive Air S us­
pens io n do not make it mo re diff ic u lt to
lift the vehicle with the jack
c.';> page 2 76 .
Changing a wheel
When you change a wheel, follow these­
quence described below step-by-step and in
exactly that order .
1. Activate the vehicle jack mode
¢page 276.
2. Remove the decorative wheel cover* . For
more deta ils see also
¢ page 274, Deco­
rative wh eel covers
o r ¢ page 275 ,
Wheels with wheel bolt caps.
3 . Loosen the wheel bolts¢ page 275.
4. Locate the proper mo unt ing po in t for the
j ack and align t he jack be low tha t poi nt
¢ page 276 .
5. Raise the car with the jack¢ page 276.
6. Remove the wheel with the flat tire and
then install
the spare ¢ page 2 77.
7. Tighten all wheel bo lts light ly .
8 .
Low er th e ve hicle w ith the jack .
9 . Use t he wh eel bolt wren ch a nd
firmly
tig hte n all whee l bolts c.';> page 2 75.
1 0 . Repl ace t he decor ative wheel cover* .
11. Deactivate t he ve hicle jack mode in the
M MI:
!CARI fu nction button > Car systems
control b utton > Servicing & checks > Air
susp.: jack mode
> Off .
The vehicle jack mode sw itches off automati­
cally at speeds above 10 km/h .
A WARNING
Always read and follow all WAR NINGS and
information
¢ .&. in Raising the vehicle on
page 2
76 a n d ¢ page 2 78.
After changing a wheel
A wheel change is not complete without the
doing the following .
.,. Always store the vehicle tool kit, the jack*
and the rep laced tire in the luggage com­
pa rtment
¢ page 140.
... Check the tir e pr essure on the spa re whee l
immed iate ly afte r mounting i t.
.,. As soon as possib le, have the
tightening
torques
on all whee l bolts che cked with a
torque wre nch. The correc t tig hten ing tor ­
que is 90 ft l b (120 Nm).
... Have the flat tire
replaced as soon as possi ­
ble.
@ Tips
- If you not ice that the w heel bo lts a re
co rroded and difficult to turn while
chang ing a tire, t hey shou ld be rep laced
before you check the tig htening to rque.
- Dr ive at reduced speed until you have the
t ightening torques checked.
- After changing a whee l, the t ire p ress ure
in all four tires must be chec ked/co rrect ­
ed and the tire p ress ure monito ring in di­
cator must b e sto red in th e MMI
¢ page 269 .
' Decorative wheel covers
Applies to vehicles: w ith decorative whee l covers
The decorative wheel covers must be removed
first to access the wheel bolts.
Fig. 217 C ha ngin g a w hee l: Remov ing th e w heel cove r
Removing
.,. In sert the hook (p rov ided with t he vehicle
t oo l ki t) in the hole in the whee l hub cover . .,..

CD Note
Do not lift the vehicle by the sill. Position
the vehicle jack only at the designated lift ­
ing points on the sill. Otherwise , your vehi­
cle will be damaged.
(D Tips
The vehicle jack mode switches off auto ­
matically at speeds above 10 km/h .
Taking the wheel off/installing the spare
Follow these instructions step-by-step for
changing the wheel.
Fig. 222 C h ang ing a w hee l: u sing t he sc rew drive r han ­
d le (w it h th e blade remov ed) to tu rn th e bolt s
Fig. 223 C h ang ing a w hee l: alig nme nt 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 screwd riv­
er handle
to completely remove the top­
most wheel bol t and set it aside on a
clean
surface ¢ fig. 222 .
What do I do now? 27 7
.. Sc rew the threaded end o f the alignment
pin
from the tool kit hand-tight into the
empty bolt hole
¢ fig. 223 .
.. Then remove the other wheel bolts as de­
scribed above.
.. Take off the wheel leaving the alignment
pin in the bolt hole
¢(D .
Putting on the spare wheel
.. Lift the spare wheel and carefully slide it
over the alignment p in to guide it in place
¢ (]).
.. Use the hexagonal socket in the screwdriver
handle to screw in and tighten all wheel
bolts
slightly.
.,. Remove the a lignment pin and insert and
tighten the rema ining wheel bolt slightly
like the rest .
.. Turn the jack hand le counter-clockwise to
lower the vehicle until the jack is fully re­
leased .
.. Use the wheel bolt wrench to tighten all
wheel bolts f irmly
¢ page 2 75. Tighten
them
crosswise, from one bolt to the (ap ­
proximately) opposite one, to keep the
wheel cente red.
CD Note
When removing or installing the wheel,
the rim could hit the brake rotor and dam­
age the rotor. Work carefully and have a
second person help you.
@ Tips
Never use the hexagonal socket in the han­
dle of the screwdriver to loosen or tighten
the wheel bolts.
- Pull the reversible blade from the screw­
driver before you use the hexagonal
socket in the hand le to turn the wheel
bolts.
- When mount ing tires with
unidirectional
tread design
make sure the tread pat­
tern is pointed the right way
¢page 278.
- The wheel bolts shou ld be clean and easy
to turn. Check for dirt and corrosion on
the mating surfaces of both the wheel

280 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, A/C com-
pressor
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
7,5
20
35
30
35
30
40
Front passenger side cockpit fuse
assignment
Fig. 227 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-
7,5
matics)

Fuse s and bulb s 281
Luggage compartment fuse assignment
Fig. 228 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
6 Suspension control system
5 Fuse panel
@ (red ) sensor
Belt tensioners, airbag con-
No. Equipment Amps
7 trol module 5
l 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 Starter diagnos
is, DC/DC
control module, sport differ-3 c onverter (Start-Stop-Sys-5
ential, ioni zer tern )
9
Electromechan ica l parking
5 4 DC/DC converter 7,5
brake contro l modu le 5 Image pro cessing 7 ,5 -
10
Rear seat heating, cooler, in-
5
terior rearview mirror