2017 AUDI A8 brake rotor

0 co .... N ,..... N .... 0 0 :c ' Driving
General information
Breaking in
A new vehicle must be broken in, and the break­
in distance should be 1,000 mi les ( 1,500 km). Do
not drive at speeds that w ill exceed
2/3 of the
maximum permitted engine speed
(RPM) for the
first 600 miles (1,000 km) , and avoid full accel­
eration 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
higher internal friction than later on when all
moving parts have settled into place with each
other.
How the vehicle is driven during the first 1,000
miles (1,500 km) also affects the engine quality.
Drive at moderate engine speeds after the initial
break-in per iod, part icularly when running a cold
engine . This will reduce engine wear and improve
the mileage .
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 tires, drive pa r­
ticularly careful for the first 350 miles (500 kilo­
meters) after fitting .
.&_ WARNING
-
New tires tend to be slippery and must also
be "broken-in". Be sure to remember this dur­
ing the first 350 miles (500 kilometers).
Brake gently . Avo id following closely behind
other vehicles or other situations that might
require sudden, hard brak ing.
Avoid damaging the vehicle
When you are driving on poor roads, or over
curbs, steep ramps, etc., make certain that low-
Driving
lying parts such as spoilers and exhaust system
parts do not bottom out and get damaged .
T h is is espec ially true for veh icles with low-s lung
chass is (sports chassis)* and fully loaded
vehicles .
Driving through water on roads
Note the following to reduce the risk of vehicle
damage when driving through water, for example
on flooded roads:
- The water must not be any higher than the bot­
tom of the vehicle body.
- Do not drive faste r than walk ing speed.
.&_ WARNING
=
After driving through water or m ud, the effec-
tiveness of the brakes may be reduced due to moisture on the brake rotors and brake pads.
A few careful brake applications should dry
off the brakes .
(D Note
-Vehicle components such as the engine,
transmission, suspension or electrical sys­
tem can be severely damaged by driving
through water.
- Always switch off the Start/Stop system
when driving through water r::;,page
78.
{i) Tips
- Determine the depth before driving through
water.
- Do not stop the vehicle, drive in reverse or
switch the engine off when driving through
water.
- Keep in mind that oncom ing vehicles may
create waves that raise the water level and
make it too deep for your vehicle to drive
through safely.
- Avoid dr iving through salt water, because
this can cause corrosion .
73

Intelligent Technology
Brakes
New brake p ads
New b rake pads do no t achieve the ir full b raking
effect during the firs t 250 mi (400 km) . They
m ust be "broken in" first . The b reak -in period can
be considerably longe r for vehicles with ceram ic
brake rotors* . However, you can compensate for
the slightly reduced braking force by pressing
firm ly on the brake pedal. Avo id heavy braking
during the break-in period .
Wear
Brake pad wear depends largely on the way the
veh icle is driven and on operat ing cond itions.
This is especially true if you are driving frequently
in the c ity and on curves or with a sporty driving
style .
Operating noise
Noises may occur when braking depend ing on the
speed, braking force and outs ide cond itions such
as temperature and humidity.
Noises may become more appare nt at lowe r
speeds due to the nature of the materia ls in the
ceramic brake rotors*.
Effect of water and road salt
I n cer tain s ituations, for example a fter driving
through water, in heavy rain, afte r ove rnig ht con ­
densation or after washing your car, the braking
effect can be red uced by moisture or ice on the
brake rotors and b rake pads . The brakes must be
"dr ied" first w ith a few care ful b rake applica­
tions .
At higher speeds and with the windshie ld wipers
turned on, the brake pads press aga inst the brake
rotors for a short amount of time. T his action,
which is no t felt by the driver, happens at regular
i n tervals a nd ensu res a better react ion time for
the bra kes in wet weather.
The braking effect can also be reduced if you are
driving on salted roads a nd you do not apply the
brakes fo r long pe riods of time. The laye r of salt
o n th e brake roto rs and pads mus t be wo rn off
fi rs t when the brakes are app lied.
128
D ue to its s urface, the ce ram ic brake rotor * ab ­
sorbs moisture in ce rtain situations. The refore,
there will tempora rily be less brak ing fo rce than
whe n the brakes are d ry . You can compensate for
th is by press ing the brake pedal harder.
Corrosion
Leav ing the ve hicl e pa rked for long periods of
time , low mileage and avoiding heavy b raking
can contrib ute to corros ion on the b rake roto rs
and to dirty brake pads.
If you usua lly avoid heavy bra king or if there is
cor rosion p resent, occasiona l heavy brak ing at
high speeds is recommended to clean the brake
rotors and pads
c> ,& .
Brake system malfunction
if you no tic e th at the b rake peda l t ravel has sud­
denly
increase d, then a bra ke circuit in the dua l­
c ir cuit b rake system may have malfunctioned.
D rive to an authorized A udi dealer or authorized
Audi Service Facility immed iate ly to have the
problem corrected . On the way there, drive w ith
reduced sp eed and keep in m ind that you wilt
need a longe r distance to stop and you will need
to press the b rake peda l ha rder.
Low b rake fluid level
When the brake fluid level is low, malfunctions in
the b rake system may occur . The brake fl uid level
i s e lec tronically moni to red.
Brake booster
The brake booster amp lifies the pressure you ap­
ply to the brake pedal. It only wor ks when the en­
gine is running.
A WARNING
- On ly app ly the brakes for the purpose of
cleani ng the bra ke sys tem w hen road and
t raffic cond itions permit. You must not en­
da nger ot her roa d users . T h is i ncreases the
r isk of an acci den t.
-
- Never le t th e ve hicle roll while t he engi ne is
stop ped bec ause this increa ses the r is k of an
a cciden t. ..,.

0 co .... N ,..._
N .... 0 0 :c ' -New brake pads do not achieve their fu ll
brak ing effect during the first 250 mi
(400 km). They must be "broken in" first.
However, you can compensate for the
sl ightly reduced braking force by pressing
firmly on the brake pedal. Avoid heavy brak­
ing dur ing the b reak-in per iod.
- Certa in weather and operat ing cond it ions
such as dr iving t hrough water, d riving in
heavy ra in or d riving after washing your ve­
hicle ca n impair the effectiveness of the
bra kes . In the w inter, ice may b uild up on
the brake pads, rotors and drums . Check
these components by braking carefu lly. Ap­
plying the brakes carefu lly several 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 st retches on roads
cove red w ith salt without using the b rakes.
Yo u can remove sa lt deposits from the
bra ke rotors and pads by caref ully applyi ng
the brakes severa l t imes .
- If the front spoiler is damaged or you install
another spoiler, ma ke sure the front wheel
bra kes are vent ilated prope rly. O therwise,
the br ake system could overheat, wh ic h re­
duces the ir effectiveness.
- Failure of a brake circui t impai rs b raking
perfo rmance, whi ch incre ases bra king dis­
tance . Avoi d driving the vehicle and have it
towed it to the nearest author ized Audi
dealer or authorized A udi Se rvice Facility .
- If the bra ke booster is not wor king, you will
have to press m uch ha rder on the bra ke
peda l to compensate for the lack of the
booster.
(D Note
- Never let the brakes "rub" by pressing the
pedal lightly when braking is not actually
necessary. This causes the brakes to over­
heat and inc reases braking d istance and
causes wear.
- Before driving downh ill a long distance on a
steep h ill, decrease your speed and select a
l ower gear. This makes use of the engine
braking effect and relieves the brakes . If Intellig
ent Technology
you need to bra ke ad ditiona lly, bra ke in in­
terva ls and not continuous ly .
(D Tips
- If the brake 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 spo il­
er, wheel covers or simi lar items, make su re
that the air f low to the front wheels is not
inter rupted. Otherwise the b rake system
can become too hot.
Electromechanical
steering., dynamic
steering
The electromechanical steering supports the
driver's steering movements.
Power s teer ing adapts electronically based on
the ve hicle speed .
Indicator lights and messages
• Do not dr ive vehicle: Steering defective
If this indicator light turns on and stays on and
t hi s message appears, the power steering may
have failed.
Stop the vehicle in a safe location as soon as pos­ s ible. Do
not cont inue drivi ng. See an authorized
Audi dealer or authorized Audi Service Fac il ity for
ass ista nce.
l;rj Steering: System fault You can continue
driving
If the indicator light turns on and the message
appears, the steering wheel may be more d iffi ­
cu lt to move or m ore sensitive than usual. The
steering wheel may also be at an angle when
driv ing stra ight .
Drive slowly to an a uthorized Audi dea ler or au­
thori zed Audi Serv ice Facility to have the mal­
funct ion corrected .
'T-ij Dynamic stee ring: Initializing
If the indicato r ligh t is blinking and this mess age
appe ars, dynamic steering* is be ing ini tialized. .,.
129

0 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.
(D 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. 281 Changing a wheel: using the screw driver handle
(with the blade removed) to turn the bolts
Fig. 282 Chang ing a whee l: alignment pin inside the top
hole
After you have loosened all wheel bolts and
raised the vehicle off the ground, remove and re­
place the wheel as follows:
Removing the wheel
• Use the hexagonal socket in the screwdriver
handle
to completely remove the topmost
wheel bolt and set it aside on a
clean surface
¢fig. 281.
• Screw the threaded end of the alignment pin
from the tool kit hand-tight into the empty bolt
hole
c> fig. 282 1) _
• Then remove the other wheel bolts as described
above.
•Ta keoff the wheel leaving the alignment pin in
the bolt hole ¢0 .
l) Applies to vehicles w ith ce ram ic b rake rotors*: Use a sec­
ond alignment pin* (sto red in th e spa re wheel well mo ld­
ing) for the lower hole, follow ing the description for the
firs t alignment pin.
318
Putting on the spare wheel
• Lift the spare wheel and carefully slide it over
the alignment pin to guide it in place ¢0 .
• Use the hexagonal socket in the screwdriver
handle to screw in and tighten all wheel bolts
slightly.
• Remove the alignment pin and insert and tight­
en the remaining wheel bolt slightly like the
rest.
• Turn the jack handle counter-clockwise to lower
the vehicle until the jack is fully released.
• Use the wheel bolt wrench to tighten all wheel
bolts firmly¢
page 315. Tighten them cross­
wise,
from one bolt to the (approximately) op­
posite one, to keep the wheel centered.
(D Note
When removing or installing the wheel, the
rim could hit the brake rotor/ceramic brake
rotor* and damage the rotor. Work carefully
and have a second person help you.
(D Tips
Never use the hexagonal socket in the handle
of the screwdriver to loosen or tighten the
wheel bolts.
- Pull the reversible blade from the screwdriv­
er before you use the hexagonal socket in
the handle to turn the wheel bolts.
- When mounting tires with
unidirectional
tread design
make sure the tread pattern is
pointed the right way¢
page 319.
-The wheel bolts should be clean and easy to
turn. Check for dirt and corrosion on the
mating surfaces of both the wheel and the
hub. Remove all dirt from these surfaces be­
fore remounting the wheel.