2018 AUDI A8 brake rotor

u. co .... N
" N .... 0 0 :c ' Driving
General information
Breaking in
A new veh icle must be broken in for the first
1,000 m iles ( 1,500 km). Do not dr ive at speeds
that will ex ceed 2/3 of the max imum perm itted
engine speed (RPM) for the first 600 miles
(1,000 km), and avoid full acceleration during
this period . You may gradually start increasing
the RPM and the speed between 600 miles (1,000 km) and 1,000 miles (1,500 km) .
During the first hours of use, the engine has a
h igher internal friction than later on when all
moving parts have settled into p lace with each
other.
How the vehicle is driven d uring the first 1,000
miles (1 ,500 km) also affects t he engine quality .
Drive at moderate engine speeds after the initial
break-in per iod, part icu larly when running a cold
engine . Th is will reduce eng ine wear and improve
the m ileage .
Do not drive at too
low of an engine speed (RPM).
Shift down if the engine stops running "smooth­ ly". Extremely high eng ine speeds are automati­
cally reduced .
New tires
If your vehicle is running on new t ires, dr ive pa r­
ticularly ca refu l for the first 350 miles (500 kilo­
mete rs) after fi tting .
A WARNING
New tires tend to be s lippery and must also
be "broken -in" . Be sure to remember this dur­
ing the first 350 miles (500 ki lometers).
Brake gently . Avo id following closely behind
other vehicles or other situations that might
require sudden, hard brak ing .
-
Driving
Reducing the risk of vehicle damage
(UJ) Note
When dr iv ing o n poor roads, by curbs and on
steep ramps, make sure that low -hanging
components such as the spoiler and exhaust
system do not come into contact with these
or they co uld be damaged. This espec ia lly ap­
plies to vehicles w ith low ground clearance
and vehicles that are heav ily loaded.
Driving through water on roads
Note the following to reduce the risk of veh icle
damage when dr iving through wate r, fo r example
o n flooded roads:
- The water must not be any higher than the bot­
tom of the veh icle body .
- Do not dr ive faster than walk ing speed .
A WARNING
-
After driv ing through water or mud, the effec ­
tiveness of the b rakes may be reduced due to
moisture o n the brake rotors and brake pads.
A few ca refu l bra ke app lications sho uld d ry
off the brakes and restore the fu ll braki ng ef ­
fect.
(UJ) Note
- Vehicle components such as t he e ng ine,
t ra nsmission, suspe nsion or elect rical sys­
t em can be seve re ly damaged by driv ing
throug h water .
- Alw ays sw itch the Start/Stop system off
w hen driv ing th ro ugh water
q poge 78.
(D Tips
- Determine the depth before d riving throug h
wate r.
- Do not stop the vehicle, drive in reverse or
sw itch t he e ngine off when d riving through
wate r.
- Keep in mind that o ncom ing vehicles may
cr eate waves that raise the wa ter level and
m ak e it too deep for yo ur vehicle to drive
throug h safe ly.
73

u. co .... N
" N .... 0 0 :c ' Brakes
New brake pads
New brake pads do no t ac hieve t heir f ull b raking
effect during the firs t 25 0 mi (4 00 km). They
must be "b roken
in" fi rst . The b rea k-in per io d can
be considerably longe r for vehicles with ce ram ic
brake roto rs*. However, yo u can compensate for
the slightly reduced br aking fo rce by p ressing
firm ly on the brake pedal. Avo id heavy braking
d uring the brea k-in period .
Wear
Brake pad wear depends largely on the way the
ve hicle is driven and on operat ing cond itions.
This is especially true if you are driving frequently
i n the c ity and on curves o r with a sporty driving
style .
Operating noise
Noises may occur when bra king depend ing on the
speed, braking force and outs ide cond itions s uch
as temperature and humidity .
Noises may become more appare nt at lowe r
speeds d ue to the nature of the mater ia ls in the
ceramic brake rotors*.
Effect of water and road salt
I n ce rtain s it u at ions, for ex ample a fter dr iving
throu gh water, in heavy ra in, afte r overnig ht con ­
densat io n or after washing your car, the bra king
effect can be red uced by moisture or ice on the
brake rotors and b ra ke pads. The brakes must be
"dr ied" fi rst w it h a few careful brake applica­
tions .
At highe r speeds and with the windsh ie ld w ipers
turned on, the brake pads press aga inst the brake
rotors for a sho rt amount of time. T his action,
which is not felt by the d rive r, happens a t regular
in te rvals a nd ens ures a bette r reac tion time fo r
the bra kes in wet weat her.
The braking ef fect can also be reduced if you are
d riving on salted roads and you do not apply t he
b rakes fo r long pe riods of time . The laye r of sa lt
on the br ake ro to rs and pads must be wo rn off
fi rs t when the br akes are app lied.
Intelligent Technology
Du e to its s urface, the ceram ic b rake rotor * ab ­
sorbs moistu re in ce rtain s ituations. The refore,
t h ere w ill tempora rily be less brak ing fo rce t han
whe n the brakes are d ry . Yo u can compensate for
t hi s by press ing t he b rake pedal harder.
Corrosion
L eaving t he vehi cle pa rked fo r lo ng p eriods o f
time, low mileage and avoidin g heavy b raking
can contrib ute to corros ion on the b rake roto rs
and to dirty brake pads.
If you usu a lly avoid heavy bra king or if the re is
cor rosion prese nt, occasiona l heavy bra king at
high speeds is recommended to clean the b ra ke
r oto rs and pads
c:> ,& .
Brake system malfunction
If
you notice that the br ake pe dal trave l has sud ­
denly in crease d, then a brake circuit in the dua l­
c ir cuit b rake system may have malfu nctioned .
Drive to an authorized A udi dealer or autho rized
Audi Se rvice Facility immed iate ly to have the
prob lem cor rected . On the way there, drive w ith
red uced speed and kee p in mind that you will
need a longer dis tance to stop an d you will need
to press the bra ke pe dal harder.
Low brake fluid level
When the bra ke fluid level is low, malfu nctions in
the b rake system may occur . T he b rake fl uid level
i s e lec tron ically moni to red .
Brake booster
The brake booster ampli fies t he p ress ure you ap ­
ply to the brake pedal. It on ly works w hen the en­
gine is runn ing.
A WARNING
-
- Onl y app ly the brakes for the purpos e of
cleani ng the bra ke sys tem when road and
t raffic cond ition s permi t. You mu st not en ­
dan ger oth er r oad users . T hi s incr ea ses the
r isk of a n accid ent.
- N eve r let t he ve hicle roll wh ile th e e ngi ne is
st opp ed bec au se this incr eas es th e risk o f an
a ccide nt.
ll),
129

Intellig ent T echn olo gy
- New brake pads do not achieve their full
braking effect during the first 250 mi
(400 km). They must be "broken in" first.
However, you can compensate for the
sl ightly reduced brak ing force by pressing
firmly on the brake pedal. Avoid heavy brak­
i ng dur ing t he break- in per iod.
- Certa in weather and operat ing cond it ions
such as dr iv ing through water, driving in
heavy ra in or driving after washing your ve ­
hicle can impair the effectiveness of the
brakes . In the winter, ice may build up on
the brake pads, rotors and drums . Check
these components by braking carefu lly. Ap­
plying the brakes carefully severa l times
dr ies the brakes and removes ice bu ild-up.
- The effic iency of the brakes can also be im­
paired by driving for long stretches on roads
covered w ith salt w ithout using the brakes.
You can remove salt deposits from the brake rotors and pads by carefully applying
the b rakes severa l t imes .
- If the front spo iler is damaged or you install
another spoiler, make sure the front wheel
bra kes are vent ilated properly. Otherwise,
the brake system could ove rheat, w hich re ­
duces the ir effectiveness.
- Failure of a b rake circuit impa irs b raking
perfo rmance, which inc reases brak ing dis ­
tance . Avoid driving the vehicle and have it
towed it to the nearest authorized Audi
dealer or authorized Audi Service Facility .
- If the brake booster is not working, you will
have to press m uch harder on the brake
peda l to compensate for the lack of the
booster.
@ Note
- Never let the brakes " rub" by pressing the
pedal light ly when braking is not actually
necessary. This causes the brakes to over­
heat and increases braking distance and
causes wear.
- Before driving downhill a long distance on a
steep hill, decrease your speed and select a l ower gear. This makes use of the engine
braking effect and relieves the brakes. If
130
you need to brake add itiona lly, brake in in­
terva ls and not continuous ly .
(D Tips
- If the bra ke boos ter is not wor king, you
must press the brake peda l with much more
force than normal.
- If you retrof it your vehicle with a front spoi l­
er, wheel covers or simi lar items, make sure
that the air flow to the front wheels is not interrupted. Otherwise the brake system
can become too hot.
Electromechanical
steering, dynamic
steering
The electromechonicol steering supports the
driver's steering movements.
Power steering adapts electronically based on
the vehicle speed .
Indicator lights and messages
• Do not drive vehi cle: S tee rin g defect ive
If this indicator light turns on and stays on and
th is message appears, the power steering may
have failed .
Stop the vehicle in a safe location as soon as pos­
s ible. Do
not conti nue driving. See an authorized
Audi dealer or authorized Audi Service Fac il ity for
ass istance.
l;rfl St ee ring: System faul t You ca n cont inue
dr ivi ng
If the indicator light turns on and the message
appears, the steering wheel may be more diffi­
cu lt to move or more sensitive than usual. The
steering wheel may also be at an angle when driv ing stra ight .
Drive slowly to an authorized Audi dea ler or au­
thori zed Audi Serv ice Facility to have the mal­
funct io n corrected.
'-r-ij Dynamic stee ring: Init ializing
If the indicato r light is blinking and this message
appears, dynamic steering* is being initialized.
IJ>-

u. co .... N
" N .... 0 0 :c ' & WARNING
-Only wash the vehicle when the ignition is
off and follow the instructions from the car
wash operator to reduce the risk of acci­
dents.
-To reduce the risk of cuts, protect yourself
from sharp metal components when wash­
ing the underbody or the inside of the wheel
housings.
-After washing the vehicle, the braking effect may be delayed due to moisture on the
brake rotors or ice in the winter . This in­
creases the risk of an accident. The brakes
must be dried first with a few careful brake
applications.
@ Note
-If you wash the vehicle in an automatic car
wash, you must fold the exterior mirrors in
to reduce the risk of damage to the mirrors.
Power folding exterior mirrors* must only
be folded in and out using the power folding
function.
-To reduce the risk of paint damage, do not
wash the vehicle in direct sunlight.
-
Care and cleaning
-To reduce the risk of damage, do not wash
the power top with a pressure washer.
-To reduce the risk of damage to the surface,
do not use insect removing sponges, kitchen
sponges or similar items.
-Matte finish painted vehicle components:
-To reduce the risk of damage to the sur-
face, do not use polishing agents or hard
wax.
-Never use protective wax. It can destroy
the matte finish effect .
-Do not place any stickers or magnetic
signs on vehicle parts painted with matte
finish paint. The paint could be damaged
when the stickers or magnets are re­
moved .
@ For the sake of the environment
Only wash the vehicle in facilities specially de­
signed for that purpose . This will reduce the
risk of dirty water contaminated with oil from
entering the sewer system.
Cleaning and care information
When cleaning and caring for individual vehicle
components, refer to the following tables. The
information contained there is simply recom­
mendations. For questions or for components that are
not listed, consult an authorized Audi
dealer or authorized Audi Service Facility. Also
follow the information found
in~.&. -
Exterior cleaning
Component Situation Solution
Windshield wiper
Deposits ~ page 51
blades
Headlights/
Deposits Soft sponge with a
mild soap solutiona)
Tail lights
Sensors/
Deposits Sensors: soft cloth with solvent-free cleaning solution
camera lenses Camera lenses: soft cloth with alcohol-free cleaning solu-
tion
Snow/ice Hand brush/solvent-free de-icing spray
Wheels Road salt Water
Brake dust Acid-free special cleaning solution
307
...

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.