brake AUDI R8 COUPE 2020 Service Manual

Wheels

Load rating (code)
means the maximum load that a
tire is rated to carry for a given in-
flation pressure. You may not find
this information on all tires be-
cause it is not required by law.
Maximum load rating
means the load rating for a tire at
the maximum permissible infla-
tion pressure for that tire.
Maximum loaded vehicle
weight
means the sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight, and
(d) Production options weight
Maximum (permissible)
inflation pressure
means the maximum cold infla-
tion pressure to which a tire may
be inflated. Also called “maxi-
mum inflation pressure.”
Normal occupant weight
means 150 lbs (68 kg) times the
number of occupants seated in
the vehicle up to the total seating
capacity of your vehicle.
248
Occupant distribution
means distribution of occupants
in a vehicle.
Outer diameter
means the overall diameter of an
inflated new tire.
Overall width
means the linear distance be-
tween the exteriors of the side-
walls of an inflated tire, including
elevations due to labeling, deco-
rations, or protective bands or
ribs.
Ply
means a layer of rubber-coated
parallel cords.
Production options weight
means the combined weight of
those installed regular production
options weighing over 5 lbs
(2.3 kg) in excess of those stand-
ard items which they replace, not
previously considered in curb
weight or accessory weight, in-
cluding heavy duty brakes, ride
levelers, roof rack, heavy duty
battery, and special trim.
Radial ply tire
means a pneumatic tire in which
the ply cords that extend to the >

Wheels

replaced with a regular tire as
soon as possible.
Applies to: vehicles with all wheel
drive: All four wheels must be
equipped with tires that are the
same brand and have the same
construction and tread pattern so
that the drive system is not dam-
aged by different wheel speeds.
For this reason, in case of emer-
gency, only use a spare tire* that
is the same circumference as the
regular tires.

Z\ WARNING
—Only use tire/rim combina-
tions and suitable wheel bolts
that have been approved by
Audi. Otherwise, damage to
the vehicle and an accident
could result.
—For technical reasons, it is not
possible to use tires from oth-
er vehicles. In some cases, you
cannot even use tires from the
same vehicle model.
—Make sure that the tires you
select have enough clearance
to the vehicle. Replacement
tires should not be chosen
simply based on the nominal
size, because tires with a dif-
ferent construction can differ



252

greatly even if they are the
same size. If there is not
enough clearance, the tires or
the vehicle can be damaged
and this can reduce driving
safety and increase the risk of
an accident.
—Only use tires that are more
than six years old when abso-
lutely necessary and drive
carefully when doing so.
—Do not use run-flat tires on
your vehicle. Using them when
not permitted can lead to ve-
hicle damage or accidents.
—If you install wheel covers on
the vehicle, make sure they al-
low enough air circulation to
cool the brake system. If they
do not, this could increase the
risk of an accident.

Tire wear and damage
B4H-0415

Fig. 192 Tire profile: treadwear indica-
tor

4S1012721BA
Wheels

technically referred to as the vehi-
cle’s Gross Vehicle Weight Rating
(“GVWR”).
The “GVWR” includes the weight
of the basic vehicle, all factory in-
stalled accessories, a full tank of
fuel, oil, coolant and other fluids
plus maximum load. The maxi-
mum load includes the number of
passengers that the vehicle is in-
tended to carry (“seating capaci-
ty”) with an assumed weight of
150 lbs. (68 kg) for each passen-
ger at a designated seating posi-
tion and the total weight of any
luggage in the vehicle.
The Gross Axle Weight Rating
(“GAWR’”) is the maximum load
that can be applied at each of the
vehicle’s two axles.
The fact that there is an upper
limit to your vehicle’s Gross Vehi-
cle Weight Rating means that the
total weight of whatever is being
carried in the vehicle is limited.
The more passengers in the vehi-
cle or passengers who are heavier
than the standard weights as-
sumed mean that less weight can
be carried as luggage.
The Gross Vehicle Weight Rating
and the Gross Axle Weight Rating
are listed on the safety compli-
ance sticker label located on the
driver’s side B-pillar.

Z\ WARNING
Overloading a vehicle can cause
loss of vehicle control, a crash
or other accident, serious per-
sonal injury, and even death.
—Carrying more weight than
your vehicle was designed to
carry will prevent the vehicle
from handling properly and in-
crease the risk of the loss of
vehicle control.
—The brakes on a vehicle that
has been overloaded may not
be able to stop the vehicle
within a safe distance.
—Tires ona vehicle that has
been overloaded can fail sud-
denly, including a blowout and
sudden deflation, causing loss
of control and a crash.
—Always make sure that the to-
tal load being transported
does not make the vehicle
heavier than the vehicle’s

Gross Vehicle Weight Rating.

257

Care and cleaning


ZA WARNING
—To reduce the risk of accidents, only wash
the vehicle when the ignition is off and fol-
low the instructions from the car wash oper-
ator.
—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 with a few careful brake appli-
cations.

©) Note
— If you wash the vehicle in an automatic car
wash, you must retract the extendable rear
spoiler* if necessary, and fold the exterior
mirrors in to reduce the risk of damage.
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.
—To reduce the risk of damage, do not wash
decorative decals* with a pressure washer.
—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.
— When washing 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 components painted with
matte finish paint. The paint could be
damaged when the stickers or magnets
are removed.
(*) 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 recommen-
dations. For questions or for components that
Exterior cleaning
are not listed, consult an authorized Audi dealer
or authorized Audi Service Facility. Also follow
the information found in > A.





Component Situation Solution
Windshield wiper | Deposits Soft cloth with glass cleaner > page 48
blades
Headlights/ Deposits Soft sponge with a mild soap solution®
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 >

266

4S1012721BA
Emergency assistance

Emergency assistance
General information
> Park the vehicle as far as possible from moving
traffic in the event of a breakdown. In the event
of a flat tire, park the vehicle ona level surface.
If you are ona steep hill, be especially careful.
> Set the parking brake.
> Switch the emergency flashers on.
> Have the passengers exit the vehicle. They
should move to a safe place, for example be-
hind a guard rail.

Z\ WARNING
Follow the steps given above. This is for your
protection and the for the safety of others on
the road.


Equipment
Vehicle tool kit/tire mobility kit/
compressor

B4S-0198

Fig. 195 Vehicle tool kit bag
The vehicle tool kit bag with vehicle tool kit, tire
mobility kit and the compressor are located in
the luggage compartment.
Completely retract the vehicle jack arm before
storing the vehicle jack”.
@ Tips
The vehicle jack* does not require any mainte-
nance.
Tire mobility kit
Applies to: vehicles with tire mobility kit
> Read and follow the important safety precau-
tions > page 271, General information.
>» Set the parking brake.
> Select the "P" selector lever position.
> Check if a repair with the tire mobility kit is pos-
sible > page 271.
UE Raimi) sala
Applies to: vehicles with tire mobility kit

B8K-1475



Fig. 196 Tire: tire damage that cannot be repaired
The tire repair is only meant for temporary use.
Change the damaged tire as soon as possible
SA.
If the tire is pierced by an object such as a nail,
do not remove the object from the tire.
The tire repair set is able to be used at tempera-
tures as low as - 4 °F (- 20 °C).
The tire mobility kit must not be used:
—If the tire has cuts or punctures that are larger
than 0.16 in (4 mm) @ ° fig. 196.
— If the rim is damaged (2)
— If you have driven with very low tire pressure or
without air in the tire @)
See an authorized Audi dealer or authorized Audi
Service Facility for assistance in these situations.

ZA WARNING
— Please note that the tire mobility kit cannot
be used in all situations, and that it may on-
ly be used temporarily. >

271

4S1012721BA
Emergency assistance

> Inflate the tire to between 29 psi (200 kPA)
and 36 psi (250 kPA) and read the pressure on
the gauge.
> If this tire pressure is not reached, remove the
filler hose. Drive slowly approximately 33 feet
(10 m) forward or in reverse so that the sealant
can be distributed in the tire. Inflate the tire
again > A\.
ZA\ WARNING
— Read and follow the manufacturer's safety
precautions on the compressor and in the in-
structions on the bottle of sealant.
— Ifa tire pressure of 29 psi (200 kPA) cannot
reached after inflating for 6 minutes, then
the tire is too severely damaged. Do not con-
tinue driving.
— If the tire cannot be repaired with the tire
sealant, see an authorized Audi dealer or au-
thorized Audi Service Facility for assistance.
@) Tips
Do not operate the compressor for more than
six minutes continuously, or it can overheat.
Once the compressor has cooled, you can con-
tinue to use it.
CeeTnn eas]
Applies to: vehicles with tire mobility kit



> Affix the sticker that says "max. 50 mph (max.
80 km/h)" that is provided with the tire mobili-
ty kit within the driver's field of vision.
> Stop the vehicle after driving for about 10 mi-
nutes and check the tire pressure.
> If the tire pressure is lower than 19 psi (130
kPA), then the tire is too severely damaged. Do
not continue driving.

Z\ WARNING
Pay attention to the following after repairing
the tire:
— Do not drive faster than 50 mph (80 km/h).
— Avoid hard acceleration or braking and driv-
ing fast around curves.
— The vehicle may become more difficult to
control.


— If the tire is too severely damaged, see an
authorized Audi dealer or authorized Audi
Service Facility for assistance.


(@) For the sake of the environment
You can give the used tire sealant bottle to an
authorized Audi dealer or authorized Audi
Service Facility for disposal.
G) Tips
Remember to obtain a new bottle of sealant
from an authorized Audi dealer or authorized
Audi Service Facility after repairing a tire.
Replacing wheels
You must complete the preparation before
changing a tire.
> Read and follow the important safety precau-
tions > page 271, General information.
> Set the parking brake.
> Select the "P" selector lever position.
> Lay out the vehicle tool kit > page 271.

ZA\ WARNING
When using the vehicle jack* on a road with a
steep hill or when offroad, you must take ex-
tra precautions to prevent the vehicle from
rolling. Use suitable objects to block the front
and back of the wheel that is diagonal from
the wheel with the flat tire.


Removing the cover

te

Fig. 199 Wheel: wheel bolts with caps
273

Emergency assistance

Removing and mounting a wheel
2 i
2 Q
+ ao

B4s-0154


Fig. 205 Wheel: alignment pin in the top and bottom
holes
Removing a wheel
> Remove the top and bottom wheel bolts com-
pletely using the hex socket in the screwdriver
handle (in the vehicle tool kit) > fig. 204 and
place it on a clean surface.
> Install the alignment pins (from the vehicle
tool kit) by hand into the empty holes
> fig. 205.
> Remove the rest of the wheel bolts.
> Remove the wheel >(@). The alignment pins re-
main in the holes.
Installing a wheel
Read the directions on > page 276 when instal-
ling unidirectional tires.
> Slide the wheel on over the alignment pins
>©.
> Install the wheel bolts and tighten them gently
using the hex socket.
> Remove the alignment pins and also tighten
the remaining wheel bolts.
> Carefully lower the vehicle using the vehicle
jack*.
276
> Tighten the wheel bolts in a diagonal pattern
using the wheel wrench.
The wheel bolts must be clean and loosen and
tighten easily. Check the contact surfaces for the
wheel and hub. Contaminants on these surfaces
must be removed before installing the wheel.

ZA WARNING
— Read and follow the important information
and notes under > page 251.
— Never use the hex socket in the screwdriver
handle to tighten the wheel bolts. Using the
hex socket will not achieve the required
tightening torque, which increases the risk
of an accident.
(!) Note
When removing or installing the wheel, the
rim
could hit the brake rotor and damage the
rotor. Work carefully and have a second per-
son help you.
Unidirectional tires
A unidirectional tire profile is identified by arrows
on the tire sidewall that point in the running di-
rection. You must always maintain the specified
running direction. This is necessary to ensure the
tire's optimal performance in regard to adhesion,
running noise, and friction, and to reduce the risk
of
hydroplaning.

To benefit fully from the advantages of the uni-
directional tire design, you should replace faulty
tires as soon as possible and restore the correct
running direction on all of the tires.
> Reinstall the caps on the wheel bolts if necessa-
ry.
> Store the vehicle tool kit in its designated
place.
> Make sure that the wheel that was removed,
the vehicle tool kit, and the vehicle jack* are se-
curely stored in the luggage compartment
=> page 54.

4S1012721BA
Emergency assistance

— The maximum permitted towing speed is 30
mph (50 km/h).
— The maximum permitted towing distance is 30
miles (50 km).
Additional information on towing with a tow
truck
The vehicle must not be towed with the front axle
or rear axle raised. Do not wrap any chains or ca-
bles around the brake lines.
Tow bar and towing cable
The vehicle can be towed with a tow bar or tow-
ing cable. Both drivers should be familiar with
the special considerations when towing, especial-
ly when using a towing cable.
Always make sure the traction force does not ex-
ceed the permitted level and there are no shock
loading conditions. There is always the risk of the
coupling becoming overloaded when driving off-
road.
For the most safety and security, drive with a tow
bar. You should use a towing cable only if a tow
bar is not available. Use a towing cable made of
synthetic elastic cable similar elastic material.

ZA WARNING
— Towing highly increases the risk of an acci-
dent, for example from colliding with the
towing vehicle.
— To reduce the risk of an accident, do not al-
low anyone to remain inside the vehicle
when it is being transported by a tow truck
or a special transporter.
@) Note
— If normal towing is not possible, for exam-
ple if the transmission is faulty or if the
towing distance is greater than 30 miles
(50 km), then transport the vehicle on a
special carrier.
— If the vehicle is towed by a tow truck at the
axle that is not permitted, this can cause se-
vere damage to the transmission.


D_ Requirement: the vehicle battery must have a sufficient
charge level.
— The vehicle must not be tow started for
technical reasons.
G) Tips
— If the power supply is interrupted, the se-
lector lever will not move out of the "P" po-
sition. The parking lock must be released
using the emergency release before towing
the vehicle > page 73.
— Follow the local legal regulations for tow-
ing.
Read and follow the important information under
=> page 278.
Preparations
> Only secure the towing cable or tow bar at the
designated towing loop > page 280.
> Make sure the towing cable is not twisted. Oth-
erwise it could disconnect from the towing loop
while towing.
> Switch the emergency flashers on in both vehi-
cles > page 44. However, do not do this if it
prohibited by law.
Towing vehicle (front)
> Only start to drive when the towing cable is
taut.
> Be especially careful when accelerating.
> Avoid sudden braking or driving maneuvers.
Vehicle being towed (rear)
> Make sure the ignition is switched on so that
the steering wheel is not locked and so that you
can use the turn signals, the horn, and the
windshield wipers if needed > A\.
> The brake booster only works when the engine
is running. Power steering only works when the
ignition is switched on and the vehicle is roll-
ing )). If the brake booster and power steering
are not functioning, you must press the brake
pedal much harder and use more force to steer.
> Release the parking brake > page 65.
279
>

Fuses and bulbs



































Fuse panel @) (black) Fuse panel © (red)
No. | Equipment 4 |Terminal 15
1 |Steering column switch module 5 |Selector lever (automatic transmission)
2 Headliner interior light, Haldex clutch, air- 7 |Interior lights
bag, switch panel, steering 8 | Windshield wiper (driver's side)
3. | Electronic Stabilization Control (ESC) 9 | Windshield wiper (front passenger's side)
4 |Dynamic steering 10 |Horn
5_| Garage door opener 11 | Steering column switch module
6 Diagnostic port, light control panel, front 12 | Light switch
central electric system control module —
Gateway Fuse panel () (brown)
ESC control module No. | Equipment
Airbag 1 |ESC control module
10 | Climate control system, pressure sensor 2_|ESC control module
11 | Left LED headlight 3 | Climate control system
13 |Right LED headlight 4 |Vehicle positioning
14 | automatic dimming rearview mirror 5_ Left door control module
15 |Engine start 6 |Right door control module
16 | Rear fuse panel 7 Front central electric system control mod-
ule
Fuse panel (@) (black) 8 Front central electric system control mod-
No. | Equipment ule
3 | Climate control system blower fan 9 Front central electric system control mod-
4 Front central electric system control mod- ule
ule 10 | Anti-theft alarm system
6 |Rearview camera 1 Front central electric system control mod-
- ule
nue pene) sBisch 12 |Rain/light sensor
No. | Equipment
1 | Diagnostic connector Fuse panel () (black)
2 | Electronic parking brake switch No. | Equipment
3 | Gateway 7 \Infotainment unit
4 |Brake booster 8 |Infotainment system control module
6 | Cigarette lighter, sockets 9 Infotainment system Bluetooth, safety
7 |Instrument cluster belt microphone
Rear central electric system control mod- £0 | Infotainment:system:sound amplifier
8 ule 12 | Infotainment system Audi music interface
9 Rear central electric system control mod-
ule Bulbs
Fs panel © ed ot
No. | Equipment Your vehicle is equipped with maintenance-free
3 | Electronic Stabilization Control (ESC) headlights and tail lights. However, if a light bulb >

282

Index

Automatic belt retractor................ 183
Automatic climate control system
refer to Climate control system (automatic) . 57
Automatic post-collision braking system.... 86
Automatic transmission.................- 67
Launch Control Program..............-- 70
Parking lock emergency release.......... 73
Automatic transmission (S tronic)
Emergency program..............+000- 72
KIGKSAOW Mires v0 ences a 0 manors w ananite « oxenens «6 71
Manual shifting................2-.000- 71
Selector lever positions................- 67
Automatic wiper/washer system........... 47
Automatic zoom (navigation) ............ 141
AUX input... 2... eee eee eee 156
Average fuel consumption................ 14
Average speed..... 2.2... cee eee 14
B
BACKIBUEEON 5 wssens so snsnente « oxenen oo ateeean «sma 93
Balancei(SOUnd) eswisue so seasive «areca wv avons 171
Band
refer to Frequency band............... 146
Bassx(SOUnG) « sence uo ssesnes a a anexene a acagene a 6 ane 171
Batteny, sesciss ov axeuius 6 a axveins wo anveana © 6 eaves a 6 240
Charging.............. eee eee eee eee 242
WINtEPOPEration 5 « wea se came ge ween see 240
Befor@drivitiG sscs 2 2 came s 2 wate sb eee a is 173
Better route (navigation)................ 144
Blower... cece eee eee 57
Bluetooth
Audio player < s..s ss ices ci resa ct eeneee 153
Connecting acell phone............... 110
SettingS
0... cece eee ee eee eee 169
BoosterSeats’, « cscs + + wvosse a 0 vssness © o micas + 218
Brake fluid
Checking the brake fluid level........... 239
BRAK CS: ansse sx ccvmans 6 1 acixaue 9 0 anmeee ow emeete a 0) orate 88
Brake assist... 2.0.0... eee eee eee 86
Brake assist systeM..........: cee een eee 86
Brake:bOO@ster’. senso « « swine a 0 sania © anotane © 6 88
Brake fllid.. 2... eee eee ee 239
Electromechanical parking brake......... 65
Emergency braking function............. 65
Indicator lights................0000005 16
New brake pads ...... 0... cee ee eee eee 88
292
Break-in security feature................. 26
Breaking in
New brake pads. ..............-0000005 88
NEW TiRGStas « ¢ scion x s caum @ x aes 2 2 Heme 4G 251
Browser
refer to Media center...............-.. 158
Bulb failure (indicator light).............. 19
Bulb replacement.............-0ee eee ee 282
Buttons
Control: pariel (MMD) «se » & seam « x ogee oe 93
Cc
Cable (USB adapter/AUX connector cable).. 155
California Proposition 65 Warning........ 230
Battery speeificees:: «cies «x wasn ay wees 2 5 241
Galllist: » wersn so soee ¢ gees & sere gos were 114
Call Options sca < sae ¢ + neem « e eee & goes 122
Capacities
PUCETANG: 5s osscu oo scams v anna a 2 eee 2 8 290
Washer fluid reservoir... . cewee ees 290
Car REY sarees weauens wo wrecies a ame oo renee» 6 are 22
Carwash 2 ase so wens © 0 mene oo mene © 2 sae 265
Catalytic ConVerter’s « sens as caves xs eases a 2: 229
Cell phone
Playing:Music « wii so ensens o & cowie « 0 como 153
also refer to Telephone................ 110
Cell phone compartment
refer to Audi phone box............005 112
Center armrest............ 00.002 e eee 52
Central locking.............. cece eee ee 21
AUTO LOCK: » weave 2 namin 2 yen 3 2 ee a 2 Bas 21
Gonvenienee:key cscsese x ssw o syiens oo wswene 24
Convenience opening and closing......... 29
Mechanically unlocking and locking....... 26
Remote control key.........eseeeeeeeee 23
Setting......... 0.0.02 eee eee eee eee 25
Central locking switch..............20--. 25
Ceramic Drake Sisccis + + assens si ssetue ow cvaeere ow 88
Certifications « i ssuve s 6 amas «a saesne a 0 smvve 287
Changing light bulbs................... 282
Charging
refer to Power sourceS...........--.+--5 53,
Charging the battery (mobile devices). 112, 156
Child restraint
Danger of using child restraints in the front