2018 AUDI A8 wheel alignment

Wheels
-Have an authorized Audi dealer or authorized Audi Service Facili­
ty check the wheel alignment if
there is unusual wear .
-Have the wheels rebalanced if an imbalance is causing noticeab le
vibration in the steering wheel.
If you do not, the tires and other
vehicle components could wear more qu ickly .
Treadwear indicator
Original equipment t ires contain
treadwear indicators in the tread pattern, which are bars that are 1/16 in (1 .6 mm) high and are
spaced evenly around the ti re per­
pendicular to the running direc­
tion. The letters
"TWI" or trian ­
gles on the tire sidewall indicate
the location of the treadwear in­
dicators .
T he tires have reached the mini­
mum tread depth
l) when they
have worn down to the treadwear
indicators. Replace the tires with
new ones
c:::> ,.1. .
Tire rotation
Rotating the tires regularly is rec ­
ommended to ensure the tires
1> Obey any applicable regulations in your
country.
2 92
wear evenly . To rotate the tires,
install the tires from the rear ax le
on the front axle and vice versa .
This will allow the tires to have app roximately the same lengt h of
service life .
F or unidirectional tires , make
sure the ti res are installed accord­
ing to the running direction indi­
cated on the tire sidewall
c:::>page 319 .
Hidden damage
Damage to tires and rims can of ­
ten occur in locations that are hidden. Unusual vibrations in the
vehicle or pulling to one side may indicate that there is tire damage.
Reduce your speed immediately .
Check the tires for damage . If no
damage is visible from the out ­
side , drive slow ly and caref ully to
the nearest authorized Audi deal­ er or authorized Audi Service Fa­
cility to have the vehicle inspect­
ed .
& WARNIN G ~
Tread that has worn too low or
different tread depths on the
tires can reduce driving safety.
11>

Emergency assistance
Taking the wheel off/installing the spare
Follow these instructions step-by-step for chang­
ing the wheel .
Fig. 28 0 Changing a wheel: using the screw driver handl e
(wit h th e blade re m oved) to turn the bol ts
F ig . 2 81 Changing a wheel: alignment p in inside t he top
hole
Afte r you have loosened a ll w heel bo lts and
raised t he vehi cle off the ground, remove and re­
p lace the whee l as fo llows:
Removing the wheel
• U se the hexagonal so cket in the screwdriver
handle
t o comple tely remove the topmost
whee l bolt and set it aside on a
clean surfa ce
¢ fig. 280 .
• Screw the th readed end of the alignment pin
from the tool kit hand-tight into the empty bolt
hole¢
fig. 2a1 1>.
• The n remove the other whee l bolts as desc ribed
above.
• Takeoff th e wheel leav ing the a lignm ent pin in
the bolt ho le
¢ 0 .
l) Applies to vehicles with ceram ic brake rotors*: Use a sec­
ond alignment
pin* (stored in th e spa re whee l well mo ld­
ing) for the lower ho le, fo llowing t he descr iption for the
first alignment pin .
318
Putting on the spare wheel
• Lif t the sp are whee l and caref ully slide it over
t he alignment p in to guide it in place
¢ (D .
• Use the hexagonal socket in the sc rewdr iver
ha nd le to screw in and tighten a ll w heel bolts
slightly.
• Remove the alignment pin and insert and tight­
en the remaining w heel bo lt slight ly like the
rest.
• Tu rn the jack hand le co unte r-clockw ise to lowe r
t he vehicle unt il t he jac k is f ully re leased.
• Use the w heel bo lt wren ch to tighten a ll wheel
bolts fi rm ly¢
p age 315. Tighten them cross­
wise,
from one bo lt to the (a pprox imately) op ­
posite one, to keep the whee l centered.
([» Note
When remov ing o r installin g the wheel, the
rim co uld hit the brake rotor/ce ramic brake
r otor * and damage t he rotor . Work carefully
and have a second person he lp you.
(D Tips
N eve r use the he xagonal socket in the han dle
of the sc rew drive r to loosen or t ig hten the
whee l bolts.
- Pull the reversible blade from the screwdr iv­
er before yo u use t he hexagona l soc ket in
t h e handle to t urn the whee l bolts.
- When mounti ng tires with
unidirectional
tread design
make sure the tread pattern is
pointed the right
way¢ page 319.
- The wheel bolts sho uld be clean and easy to
t u rn. Check for dirt and corrosion on the
mating surfaces of both the wheel and t he
hub. Remove all dirt from these s urfaces be­
fore remounti ng the whee l.

A
A/C (automatic climate control) . . . . . . . . . . 70
Accessories . . . . . . . . . . . . . . . . . . . . . . . 61 , 338
Active lane assist (lane departure assist) . . 103
Cleaning the camera area . . . . . . . . . . . . . 307
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Adapter cable (Audi music interface) . . . . . 186
Adaptive air suspension/sport . . . . . . . . . . . 111
Adaptive cruise control. . . . . . . . . . . . . . . . . . 95
Cleaning the sensors . . . . . . . . . . . . . . . . . 307
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Adjusting the sound . . . . . . . . . . . . . . . . . . . 205
Adjusting the sound (tone) . . . . . . . . . . . . . 196
Adjusting the temperature (automatic climate
control system) . . . . . . . . . . . . . . . . . . . . . . . . 71
Adjusting the volume RSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Airbag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Airbag system . . . . . . . . . . . . . . . . . . . . 235, 245
Care .. .. .. .. ............... .. .. .. . 240
Children . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Child restraints . . . . . . . . . . . . . . . . . . . . . 251
Components (front a irbags) . . . . . . . . . . . 233
Danger of fitting a child seat on the front
passenger seat . . . . . . . . . . . . . . . . . . . . . . 228
Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Front airbags . . . . . . . . . . . . . . . . . . . . . . . 231
Important information . . . . . . . . . . . . . . . 227
Knee airbags . . . . . . . . . . . . . . . . . . . . . . . . 241
Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . 237
PASSENGER A IR BAG OFF light . . . . . . . . . 237
Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Safety instructions . . . . . . . . . . . . . . . . . . . 239
Side airbags . . . . . . . . . . . . . . . . . . . . . . . . 243
Side curtain airbags . . . . . . . . . . . . . . . . . . 246
We ight-sensing mat . . . . . . . . . . . . . . . . . 2Sl
Aircraft Transporting your vehicle . . . . . . . . . . . . . 330
Air distribution (automatic climate control) . 71
Air pressure (Tire Pressure Monitoring Sys-
tem) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302
Air pressure (tires) . . . . . . . . . . . . . . . . . . . . 293
Air suspension . . . . . . . . . . . . . . . . . . . . . . . 111
u. ~ Alignment pin (changing the wheel) . . . . . . 312
N ~ All season tires . . . . . . . . . . . . . . . . . . . . . . . 298 ......
g Alternative route . . . . . . . . . . . . . . . . . . . . . 173
:c ' Index
Anti-freeze
Windshield washer system . . . . . . . . . . . . 281
Anti- Lock Braking System (ABS) . . . . . . . . . 127
Anti-Slip Regulation (ASR) . . . . . . . . . . . . . . 127
Audi connect . . . . . . . . . . . . . . . . . . . . . . . . . 158
Data connection . . . . . . . . . . . . . . . . . . . . . 162
Data protection . . . . . . . . . . . . . . . . . . . . . 164
Services (overview) . . . . . . . . . . . . . . . . . . 160
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Audi music interface . . . . . . . . . . . . . . . . . . . 186
Adapter cable . . . . . . . . . . . . . . . . . . . . . . . 186
Connecting and disconnecting . . . . . . . . . 186
Screen settings . . . . . . . . . . . . . . . . . . . . . 191
Audio player
refer to Bluetooth . . . . . . . . . . . . . . . . . . . 184
Audio track (DVD) . . . . . . . . . . . . . . . . . . . . . 191
Audi Service R epair Manuals and Literature 336
AUTO Automatic climate control system . . . . . . . 70
Automatic headlights . . . . . . . . . . . . . . . . . 43
Auto Lock (central locking) . . . . . . . . . . . . . . 27
Automatic belt retractor . . . . . . . . . . . . . . . 222
Automat ic climate control . . . . . . . . . . . . . . . 69
Automatic traffic rerouting . . . . . . . . . . . . . 173
Automatic transmission (tiptronic) . . . . . . . . 83
Emerg ency mode . . . . . . . . . . . . . . . . . . . . . 87
Hill descent control . . . . . . . . . . . . . . . . . . . 86
Overboost . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Parking lock emergency release . . . . . . . . . 88
Automatic wipe/wash system . . . . . . . . . . . . SO
Auto Safety Hotline . . . . . . . . . . . . . . . . . . . 215
Average consumption . . . . . . . . . . . . . . . . . . . 12
Average speed . . . . . . . . . . . . . . . . . . . . . . . . 12
B
BACK button . . . . . . . . . . . . . . . . . . . . . . . . . 135
Balance (sound) . . . . . . . . . . . . . . . . . . . . . . 206
Belt tensioners . ..... ............. 217,225
Blended gasoline . . . . . . . . . . . . . . . . . . . . . 268
Blower (automatic climate control) . . . . . . . . 71
Bluetooth Audio player . . . . . . . . . . . . . . . . . . . . . . . . 184
Connecting a cell phone . . . . . . . . . . . . . . 147
Booster seats . . . . . . . . . . . . . . . . . . . . . . . . 2 5 7
Brake fluid Checking the brake fluid level . . . . . . . . . . 279
341