2018 AUDI A8 change wheel

Ass is tanc e system s
In the sporty dynamic mode, the transmission
shifts at higher speed ranges.
Air su spen sion
The adaptive air suspension/adaptive air suspen­
sion spo rt* is an e lectron ica lly contro lled a ir sus ­
pens ion and damping system . The adjustment
depends on the driving mode selected, steering movements, the driver's braking and accelera­
tion , and as the road surface, vehicle speed and
load . A sporty sett ing is generally used in vehicles
with adap tive a ir suspension sport*.
The vehicle ground clearance depends on the mode se lected and the speed . When you are in
the auto or dynamic mode, the h ighway sett ing is
activated when you dr ive above 75 mph (120 km/
h) for more than 30 seconds . The ground clear­
ance is increased automatically if the speed
drops below 44 mph (70 km/h) for more than 120 seconds .
Stee ring
The power steer ing adap ts . Indirect steer ing that
moves easily as in comfort mode is especially
suited to long drives on a h ighway . The dynam ic
mode p rovides spo rty , d irect steering.
Applies to: vehicles with dynamic steering
The steering ratio changes based on vehicle
speed in order to ma intain optimum steering ef­
fort for the dr ive r at all times . This sets the steer­
i n g to be less sensit ive at hig he r speeds in o rder
to p rovide imp roved vehicle contro l. At reduced
speeds, steer ing is more direct in order to keep
the steering effort as minima l as possib le when
the driv er is maneuvering the v ehicl e. At low and
average speeds, dynamic steering* addit ionally
provides more responsive steering performance.
Sport diff ere ntial *
As a component of the all wheel drive system (quattro)
¢ page 131, the sport differential dis ­
tributes the driving power to the rear axle de ­
pending on the situation. The distribution of
power va ries from balanced (comfort) to sporty
(dynamic) depending on the selec ted mode . The
goal is a high level of agility and ab il ity to accel ­
erate on curves . The ve hicle is very respons ive to
steer ing .
112 Corn
ering light *
The co rnering ligh t adapts the hig h beams to the
direction of the curve depending on the speed.
The pivoting action and the lighting also adapt to
the mode.
Adaptive cruise cont rol*
The be hav io r whe n accelerat ing ca n be adjusted
from comfortable to sporty, depending on the drive select mode. Adaptive cruise control also
responds to the driving behavior of the vehicle
ahead in a more cons ervative or sporty manner.
Engine sound *
The eng ine sound adapts to the c urrent mode
and can be subtle to spo rty.
{[» Note
- Make s ure there is enough clearance above
and be low the vehicle when pa rk ing . T he
heig ht of t he ve hicle can change on ce it is
parked d ue to temperature fluctuations,
changes to the load conditions and changes
to the driv ing modes, which can affect clear­
ance .
- When transporting the vehicle on a car car ­
rier, train, ship or by other means, on ly tie
the vehicle down at the runn ing surface of
the tires, which is the outer c ircumference.
Securing the vehicle at the axle compo­
nents, suspens ion struts o r tow ing eyes is
not pe rm itted because the p ressure i n the
air suspe nsion s truts ca n change d uring
t ra nspo rt. The vehi cle may not be secu red
sufficiently i f th i s happens.
(D Tips
- In some mo dels, the max imum ve hicle
speed can only be reached in t he auto and
dynamic modes.
- Th e S se lector lever posi tion a utomat ic all y
engages if the dynami c mode is selected.
- In ve hicl es tha t h ave dynam ic stee rin g*, op ­
erat ing no ise is he ard when sta rting o r stop ­
ping the engine . This does no t indi ca te a
prob lem.

u. co .... N
" N .... 0 0 :c ' Parking systems
General information
A pp lies to: ve hicles with pa rk in g system p lus/rearview cam ­
era/peripheral camera
Depending on your vehicle 's equipment, various
pa rking aids wi ll help you when parking and ma­
ne uvering.
The
p arki ng sys tem plu s assists you when park­
ing by aud ibly and visua lly indicating objects de­
tected in front of and behind the vehicle
¢ page 116.
The re arv ie w ca mer a shows the area beh ind the
veh icle in the Infotainment system d isplay. This
d isplay assists you when you are cross or parallel
pa rking
¢ page 117 . The park ing system p lus
functions are also available
¢ page 116.
The periph eral ca mera s give var ious views to
h e lp you whe n pa rking or maneuver ing
¢ page 120. T he pa rking system pl us functions
are also availab le
¢ page 116.
& WARNING
-Always look for traffic and check the area
around your vehicle by looking at it direct ly
as well. The parking system cannot replace
the driver's attent ion. The driver is always
responsible when enter ing or leav ing a park­
ing space and during similar maneuvers.
- Please note that some surfaces, such as
clothing, are not detected by the system .
-
-Sensors and cameras have blind spots in
wh ich people and objects cannot be detect­
ed . Be especially caut ious of small children
and animals .
- The sensors can be displaced by impacts or
damage to the radiator gr ille, bumper,
wheel housing and the underbody . The park­
ing system may be impa ired as a result.
Have a n author ized A udi dealer or author­
ized Audi Serv ice Facility check their func ­
tion .
- Make s ure the senso rs a re not obstructed by
stickers, deposits o r other materia ls. If they
are, the sensor function could be impaired.
For additiona l information on cleaning, see
¢ page 306.
Parking syste m s
@ Note
-Some objects are not detected or disp layed
by the system under certain circumstances:
- objects such as barrier cha ins, tra iler draw
bars, vertical po les or fences
- objects above the sensors such as wall ex ­
tensions
- objects with certain surfaces or structures
such as cha in link fences or powder snow
- If you continue driving closer to a low ob­
ject, it may disappear from the sensor range . Note that you will no longer be
wa rned about t his obstacle.
(D Tips
-The system may provide a warning even
tho ugh the re are no obstacles in the cover­
age area in some situations, such as:
- certain road surfaces or when there is tall
grass
- externa l ultrasonic sources such as from
cleaning vehicles
- in heavy rain, snow, or th ick vehicle ex ­
haust
- We recommend tha t you practice par king in
a traffic-free location or parking lot to be ­
come fami liar with the system . W hen doing
this, there sho uld be good light and weath­
er conditions.
- You can change the volume and pitch of the
signa ls as well as the
display ¢ page 125.
-Please refer to the instructions for towing a
trai ler located in
r:!:> page 125 .
-What appears in the infotainment display is
somewhat time-delayed .
- T he sensors m ust be kept clean and free of
snow and ice for the parking aid to operate .
115

Parking syste m s
-For objects that do not touch the ground,
such as the bumper of a parked vehicle, a
trailer hitch or the rear of a truck. Do not
use the orientation lines in this case.
- If driven from a level surface onto an in­
cline, or a downward slope.
- If driven toward protruding objects.
- If the vehicle is carrying too much load in
the rear.
- The accuracy of the orientation lines and
blue surfaces decreases when the vehicle is
raised/lowered
¢ page 111.
(D Note
-Always read and follow the applicable warn ­
ings
¢ (D in General information on
page 115.
- The orange -colored or ientation lines in the
Infotainment display show the vehicle path based on the steering wheel angle. The
front of the vehicle swings out more than
the rear of the veh icle. Maintain p lenty of
distance so that an exterior mirror or a cor­ ner of the veh icle does not co llide w ith any
obstacles.
Switching on/off
Ap plies to: ve hicles w ith rearview camera
Switching on
~ Sh ift i nto reverse, or
~ P ress the p, qA bu tton in the cente r console
¢ page 116, fig . 130. A sho rt confirmat io n
tone sounds and the LED in the but ton turns
on .
Switching between the rearview camera and
optical display
~ Press t he Graphic contro l but ton ®
¢ page 118, fig. 135 to see the optica l disp lay.
~ Press the Rear view contro l button to see the
rearview camera image.
Sw itch ing off
~ D rive faster than 6 mph (10 km/h), or
~ Press the p, qA bu tton, or
~ Switch the ignition off.
118
@ Tips
- The visua l display in the left part of the dis ­
play should he lp you detect the crit ica l vehi-
cle areas.
- You can change the vol ume and pitch of the
signals as well as the display¢
page 125.
Perpendicular parking
App lies to : vehicles wi th rearv iew camera
This view may be used when parking in a garage
or in
a parking space.
F ig. 13 S Infota inment system: aim ing at a pa rk in g space
Fig. 1 36 Infota inment system : alig ning the vehicle
~ Turn the Infotainment system on and shift into
reverse gear.
~ The orange orie ntation lines (!) show the vehi­
cle 's direction of travel. Turn the steering wheel
until the orange o rientation lines appear in th e
parking
space ¢ fig. 135. Use the ma rkings @
t o he lp you estima te the dist ance to an obsta­
cle . Each marking represents approximate ly 3
ft (1 m). The b lue area represents an extension
of the vehicle's outline by approximate ly 16 ft
(5 meters) to the rear.
~ Wh ile driving in reverse gear, ad just the steer-
ing wheel angle to fit the park ing space using
..,.

Parking systems
Peripheral cameras
Introduction
Applies to: ve hicles with per ipheral cameras
W ith this equipment, the parking system plus*
¢ page 116 is supplemented w ith vario us periph­
eral cameras.
The four cameras g ive you the following views:
area around the vehicle, front corner view and rear corner v iew, view in front of the veh icle and
behind the vehicle.
General information
Applies to: ve hicles w ith pe ripheral cameras
F ig. 139 Location of peripheral cameras
....
"' gg
± ., a,
The four peripheral cameras are located in the ra­
d iator grille, in the luggage compartment lid and
on both exterior mirrors¢
fig. 139. Make sure
that the lenses are not covered by deposits or any
other obstructions as this may impair the system.
For information on cleaning, see ¢
page 306.
In the Surrounding mode, black corners are
shown in the vehicle silhouette. Objects in these
areas are outside of the camera's field of view
and are not detected.
The accuracy of the orientation lines and the blue
surfaces is reduced if the adaptive ai r suspen­
sion/sport* is faulty, if the vehicle is lifted or if
the
Dynamic mode is activated ¢ page 111.
A WARNING
-Always read and follow the applicable warn­
ings
¢&. in General information on
page 115.
-If the position or the installation angle of a
camera was changed, for example after a
120
collision, do not continue to use the system
for safety reasons. Have it checked by an au­ thorized Audi dealer or authorized Audi
Service Facility .
- Keep in mind that the image in the display is
incorrect if the exterior mirror housing has
been moved out of place.
- Use the
Rear mode and the Corner view
( rear)
mode only when the luggage com­
partment lid is completely closed . Other­
wise the image in the disp lay w ill be distort­
ed.
- The vehicle surroundings are shown using
the camera images. The vehicle image is
shown by the system. Objects and obstacles
above the camera are not displayed .
- Camera lenses enlarge and distort the field
of vision. The objects appear both altered
and inaccurate on the screen.
(D Note
-Always read and follow the applicable warn­
ings
¢ (Din General information on
page 115.
-The Infotainment disp lay shows the direc­
tion in which the rear of the veh icle is travel­
ing based on the steer ing wheel angle. The
front of the veh icle swings out more than
the rear of the vehicle. Maintain plenty of
distance so that an exterior mirror or a cor­
ner of the vehicle does not collide with any
obstacles.
@ Tips
If
the 8/IT;M/c:5 symbol appears in the dis­
play and the respective disp lay area is grayed
out, then the power exterior mirrors were
folded in or one of the doors/luggage com­
partment lid was opened .

Parking systems
,.. Turn the Infotainment system on and shift into
reverse gear. The parking system is turned on
and the
Cross parking view is displayed.
,.. Press the control button on the Infotainment
unit @ Q page 119, fig . 13 7. The Parallel park­
ing
view is displayed .
,.. Back up and align your vehicle so the blue area
@ borders on the rear end of the vehicle be­
hind yo u or on the parking space line
Q .&. in
General information on page 120,
Q (Q) in Gen­
eral information on page 120 .
The blue area
rep resents an extension of the vehicle's out line
by approximately 16 ft (5 meters) to the rear.
The long s ide of the blue area should be on the
curb . The entire blue area must f it into the
parking space.
,.. With the vehicle stopped, turn the steering
wheel to the right as far as it w ill go .
,.. Back into the parking space until the b lue curve
Q fig. 150 touches the curb-=?.&. in General in­
formation on page 120, ¢@ in General infor­
mation on page 120.
Stop the vehicle .
,.. With the vehicle stopped, turn the steering
whee l to the left as far as it will go.
,.. Continue to back into the parking space until
the vehicle is parked parallel to the
curb¢ &.
in General information on page 120, ¢@ in
General information on page 120 .
® repre­
sents the rear bumper. At the very latest, stop
the vehicle when the red orientation
line ©
borde rs an object . Keep an eye on the front of
your vehicle while doing this.
Parking next to obstacles
If there is an obstacle (such as a wall) next to the
parking space, position the vehicle so there is
mo re space on that side. Position the long side of
the blue area so that there is sufficient space
from the object. The area must not be on the
ob­
stacle. You will a lso need to start turning the
steering whee l earlier. The blue curve
¢ page 119, fig . 138 must not touch the obsta ­
cle , but rather there should be enough distance.
@ Tips
The left or right orientation lines and surfaces
will be displayed, depending on the turn
sig­
nal being used.
124
Trailer mode
Applies to: vehicles with peripheral cameras and trailer hitch
This view assists you in positioning the vehicle in
front of a trailer .
Fig. 151 In fota inment system: rear mode
Requirement: the trailer mode must be selected
¢ page 122, Rear.
.,. Now you can posit ion your veh icle in front of
the trailer
c::;, .&. in General information on
page 120,
c::;, (Q) in General information on
page 120.
The orange or ientation line indicates
the expected path toward the trailer hitch. Use
the blue lines to help you estimate the d istance
to the trailer hitch.
Setting the mode
Applies to : vehicles with peripheral cameras
,.. Select: !CAR ! function button> Car systems
control button > Driver assistance > Parking
aid > Change to front/rear > Auto or Manual.
Auto
-this view behind the vehicle ( Rear mode) is
displayed automatically when you shift into re­
verse. The view in front of the vehicle
(Front
mode) is d isplayed automat ically when you shift
i nto the forward gears .
Manual -When you switch the system on, the
view beh ind the veh icle
( Rear mode) is always
displayed and it does not switch to the
Front
mode when a forward gear is se lected.

Audi pre sense Preventative passenger
protection
Applies to: ve hicles with Audi pre sense
Pre sense can initiate steps to protect vehicle oc­
cupants in certain dangerous situations. The
functions descr ibed are available depending on
veh icle equ ipment:
Audi pre sense ba sic
The fo llowing functions can be triggered in cer­
tain driving situat ions:
- Tightening of the safety belts (for examp le,
during heavy braking) : the front safety belts
have reversible belt tensioners. If a collision
does not occur, the safety belts loosen slightly
and are ready to trigger again.
- Closing the w indows and the sunroof*
The function of the pre sense basic is activated at
a speed of 20 mph (30 km/h) or hig her . The de­
p loyment time is adapted in the drive select dy ­
namic mode .
Audi pre se ns e front ( vehicl es with adapti ve
cruise contr ol* }
Pre sense front contains the f unctions of pre
sense basic. In add ition, the likelihood of a rear­
end collis ion with the vehicle ahead is also calcu­
lated, within the limits of the system . If the risk
of a collision is detected, t he following functions
can t rigger:
- Audi braking guard
¢page 100
-Tensioning of the safety belts
- Closing the windows and the sunroof *
Audi pre sense rear (vehicles with side
a ss is t*)
Pre sense rear contains t he functions of pre sense
basic. In addition, the like lihood of a rear-end
col lision from t he vehicle behind is a lso ca lculat­
ed, w ith in the lim its of the system. If the risk of a
collis ion is detected, the following functions can
~ tr igger :
.... N
~ -Tensioning of the safety belts
g -Closing the windows and the sunroof *
:c ' Audi pre sense
-Adjusting the seats : the settings for the powe r
head restrains, the upper sections of the backr ­
ests and the pne umatic side bolsters* change
on the front seats and the outer rear seats*. If
a co llision does not occur, the seat sett ings
that were previously used are restored .
Audi pre sen se plus
Pre sense plus contains the f unctions of pre
sense front and pre sense rear .
Error messag e
Audi pre sens e: Unavailable
Preventative passenger protect ion is not ava ila­
ble. Drive to an autho rized Aud i deale r or author­
ized Audi Se rvice Facility immed iately to have the
malfunction corrected.
& WARNING
--
Pr e sense cannot overcome natural p hys ica l
l aws .
It is a system designed to assist and it
cannot prevent a co llision. Do not let the in­
creased safety provided tempt you into tak ing
risks. This could inc rease your r isk of a colli ­
sion.
- The system can dep loy incorrectly.
- Please note that t he sensors do not a lways
detect a ll objects. T his increases the r isk of
a co llision.
- Pre sense does not react to peop le or ani­
mals or objects that are cross ing the vehi­
cle's path or are difficu lt to detect
¢page 95.
- Reflective objects such as gua rd ra ils or the
entrance to a tunnel, heavy ra in and ice can
affect the funct io n of the radar sensors and
the system's ab ility to detect a collision risk.
@ Note
The sensors can be d isplaced by impacts or
damage to the bumper, wheel housi ng and
underbody. Pre sense can be impaired by this .
Have an autho rized Aud i deale r or au tho rized
A udi Se rvice Fac ility check the ir funct io n.
.,.
217

Airbag syste m
(D Tips
If the weight-sensing mat in the front passen ­
ger seat detects an empty seat, the front air ­
bag on the passenger side w ill be turned off,
and the
PASSEN GER AIR BAG OFF light will
stay on.
Repair, care and disposal of the airbags
Parts of the a irbag system are installed at many
d ifferent p laces on your Aud i. Install ing, remov­
i n g, servic ing o r repa iring a part in an area of the
ve hicle can damage a pa rt of an airbag system
and prevent that system from working properly
in a co llision .
There are some important t hings yo u have to
know to make sure th at the effect iveness of the
system wi ll not be impaired and that dis carded
components do not cause injury or pollute the
environment .
A WARNING
Improper care, serv icing and repair proce­
dures can increase the r isk of personal injury
and death by preventing an airbag from de­
ploying when needed or deploying an airbag
unexpectedly:
-
-Never cover, obstruct, or change the steer­
i ng wheel horn pad or a irbag cover or the in­
strument pa ne l or mod ify them in any way.
-Never attach any objects such as cup holders
o r te lephone mount ings to the surfaces cov­
er ing the ai rbag units.
-For cleaning the horn pad or instrument
pane l, use on ly a soft, dry cloth or one mois­
tened with plain water. Solvents or cleaners cou ld damage the airbag cover or change
the stiffness or st rengt h of the materia l so
t h at the airbag cannot dep loy and protect
properly.
-Never repair, adjust, or change any parts of
the airbag system.
-All work on the stee ring wheel, i nstr ument
pane l, front seats or electrical system (in ­
cluding the installation of audio equipment,
ce llular telephones and CB rad ios, etc.)
must be performed by a qualified technician
240
who has the training and specia l equipment
necessary.
-F or any work on the airbag system, we
strong ly recommend that you see yo ur au­
thorized Audi dealer or qualified workshop.
-Never modify the front b umper or parts of
the vehicle body.
- Always make sure that the side airbag can
inflate w ithout interference:
-Never install seat covers or replaceme nt
upholstery ove r the front seatbacks that
have not bee n specific ally app roved by
A udi.
-Neve r use additional seat c ushi ons that
cover the areas where the side airbags in ­
flate.
-Damage to the orig inal seat cove rs o r to
t h e seam in the area of the s ide airb ag
module mus t always be repai red immedi ­
ate ly by an authorized Audi dealer.
-The airb ag sys tem can be act iv a ted only
once . A fter an airbag has in flated, it must
be replaced by an authorized Audi dealer or
qua lified tech nic ian who has the technical
information, train ing and spec ial equ ipment
necessary.
-The airbag system can be deployed only
once. After an airbag has been deployed, it
must be replaced with new rep lacement
parts des igned and approved espec ially for
your Aud i model version. Replacement of
comp lete airbag systems or airbag compo­
nents must be perfo rmed by qualified work­
shops only. M ake sure that any a irb ag se rv ­
ice act ion is entered in your Audi Warranty
& Maintenance booklet under AIRBAG RE ­
PLACEMENT RECORD.
-For safety reasons in severe accidents, the
a lter nator and starter a re separated from
the vehicle battery with a pyrotechnic circu it
interrupter.
-Wo rk on the pyrotechnic c ircuit inte rrupt­
e r must o nly be perfo rmed by a qua lified
dealer
-r isk of an a cciden t!
-If the vehicle or the c ircuit inte rr u pte r is
sc rapped, all appli cable safety p recau tions
mus t be followed.
..,.

Wheels
"XL" "xl" "EXTRA LOAD" or "RF" I I I
on the sidewall.
Rim
means a metal support for a tire
or a tire and tube assembly upon
which the tire beads are seated.
Rim diameter
means nominal diameter of the
bead seat . If you change your
wheel size, you will have to pur ­
chase new tires to match the new rim diameter .
Rim size designation
means rim diameter and width .
Rim width
means nominal distance between
rim flanges.
Sidewall
means that portion of a tire be­
tween the tread and bead .
Speed rating (letter code)
means the speed at which a tire is
designed to be driven for extend­
ed periods of time. The ratings range from 93 mph (150 km/h)
to 186 mph (298
km/h)¢ table
on page 284 .
You may not find
this information on all tires be­
cause it is not required by law .
288
The speed rating letter code,
where applicable, is molded on the tire sidewall and indicates the maximum permissible vehicle
speeds
¢ .1,. in Winter tires on
page 298 .
Tire pressure monitoring
system*
means a system that detects
when one or mo re of a vehicle 's
tires are underinflated and illumi­
nates a low tire pressure warning
telltale .
Tread
means that portion of a tire that
comes into contact with the road .
Tread separation
means pulling away of the tread
from the tire carcass .
Treadwear indicators (TWI )
means the projections within the
principal grooves designed to give
a visual indication of the degrees
of wear of the tread. See
¢ page 292, Treadwear indicator
for more information on measur- ing tire wear.
.,.