2020 AUDI R8 COUPE radiator

Opening and closing

— For additional information about HomeLink,
visit www.homelink.com.
— For the Declaration of Conformity with the
provisions from the FCC in the United States
and Industry Canada, see > page 287.
Applies to: vehicles with garage door opener

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om z 5

Fig. 26 Control panel above the interior rearview mirror
Requirement: the button in the control panel
must be programmed & page 30 and the vehi-
cle must be located within range of the system,
such as the garage door.
> Press the button to open the garage door. The
green LED (@) blinks or turns on.
> Press the button again to close the garage
door.
@ Tips
When opening or closing the garage door, do
not press and hold the button longer ten sec-
onds or the garage door opener will switch to
programming mode.
30


Programming the transmitter
Applies to: vehicles with garage door opener

B4S-0073
Fig. 27 Distance between the radiator grille and the re-
mote control transmitter
Programming the button: step 1 on the
control panel
1. Switch the ignition on.
2. Press both of the outside buttons on the con-
trol unit > page 30, fig. 26 until the yellow
LED @) turns off and the green LED @ turns
on. This procedure clears the standard codes
that were set at the factory and does not
need to be repeated again to program the
other buttons.
3. Briefly press the button in the control panel
that you want to program.
4. Wait until the yellow LED @) blinks. The pro-
gramming mode is active for five minutes.
5. Go in front of the vehicle with the original re-
mote control transmitter for the system that
you are programming to the control panel
button.
Programming the button: step 2 at the
radiator grille
6. Hold the remote control transmitter at the
vehicle radiator grille > fig. 27.
7. Now press the remote control transmitter
until the turn signals on your vehicle blink.
This can take up to 30 seconds.
8. Ifthe emergency flashers blink three times,
the programming was successful. If the
emergency flashers only blink one time, the
five-minute time limit for programming has
expired or the programming was unsuccess-
ful. Repeat the programming procedure
starting from the third step or change the
distance to the radiator grille.

4S1012721BA
Opening and closing

9. Ifthe garage door or other systems do not
open with the HomeLink buttons even if the
programming was successful, the system
may use a rolling code instead of a fixed
code. You must also then perform rolling
code programming > page 31.
The other two buttons in the control panel can be
programmed using the instructions given above.
Start with step 3.
Deleting button programming
The programmed buttons cannot be deleted indi-
vidually. They must be deleted all at once. Repro-
gram the buttons if necessary.
> Switch the ignition on.
> Press both of the outside buttons on the con-
trol unit until the yellow LED @ turns off and
the green LED (@) turns on.
Reprogramming buttons
> Switch the ignition on.
> To reprogram an individual button, press the
desired button until the green LED @ turns off
and the yellow LED (2) starts to turn on (after
approximately 10 seconds). Release the button
immediately. The programming mode is active
for 5 minutes and is indicated by a blinking yel-
low light.
> Continue with step 5.
G) Tips
— The distance needed between the remote
control transmitter and the garage door
opener module in the radiator grille
=> fig. 27 depends on the system you are
programming.
— Depending on the system model, you may
need to release the button on the remote
control transmitter while it is programming
and press it again. Hold every position you
try when programming for at least 15 sec-
onds before trying a new position. Keep an
eye on the vehicle turn signals while doing
this.
Rolling code programming
Applies to: vehicles with garage door opener
On some systems, programming a rolling code is
also necessary.
Identifying a rolling code
After programming a rolling code successfully (in
front of the vehicle), the yellow LED stays on
when returning to the vehicle. It turns off the
next time the button is pressed. It will then blink
green and the garage door opener will send the
required signal. The garage door opener will also
send the signal and the LED will blink green
whenever the button is pressed after that.
> Program the rolling code as follows:
Activating the system motor unit
> Locate the programming button on the system
motor unit. The exact location and color of the
button may vary depending on the brand.
> Press the programming button on the system
motor unit (usually this will activate a “display”
on the motor unit). You now have approximate-
ly 30 seconds to program the button in the
control panel.
Programming the button in the control
panel
> Press and hold the previously programmed but-
ton in the control panel for two seconds.
> To complete rolling code programming, press
and hold the button again for two seconds.
> On some systems, the button might need to be
pressed a third time to end the programming
procedure.
After programming, the system should recognize
the signal and operate when the button in the
control panel is pressed. Now you may program
the other buttons as needed.
@) Tips
— The rolling code can be programmed more
quickly and more easily with the help of a
second person.
— If any difficulties occur when programming
the rolling code, it may be helpful to read
the system operating manual.
31

4S1012721BA
Driving

the Start/Stop system*: the needle in the tach-
ometer moves into the READY position.
> To switch the ignition off, press the button
again. The needle in the tachometer moves into
the OFF position.
Equipment that uses a lot of electricity is switch-
ed off temporarily when you start the engine.
If the engine does not start immediately, the
starting procedure stops automatically after a
short time. If this is the case, repeat the starting
procedure after approximately 30 seconds.
Start/Stop system
See the information in > page 62, Start/Stop
system.

ZA\ WARNING
To reduce the risk of poisoning, never allow
the engine to run in confined spaces.
@) Note
Avoid high engine speed, full throttle, and
heavy engine load if the engine has not
reached operating temperature yet. You could
damage the engine.

@) For the sake of the environment
Do not let the engine run while parked to
warm up. Begin driving immediately. This re-
duces unnecessary emissions.
G) Tips
— Some noise after starting the engine is nor-
mal and is no cause for concern.
— If you leave the vehicle with the ignition
switched on, the ignition will switch off af-
ter a certain amount of time. Make sure that
electrical equipment such as the exterior
lights are switched off.
Stopping the engine
> Bring the vehicle to a full stop.
> Press the [START ENGINE STOP] button.



)_ This function is not available in all countries.
Steering lock!)
The steering is locked when you switch off the en-
gine and open the driver's door. The locked steer-
ing helps prevent vehicle theft.

Z\ WARNING
— Never turn off the engine before the vehicle
has come to a complete stop. Switching it
off before the vehicle has stopped may im-
pair the function of the brake booster and
power steering. You may need to use more
force when braking or steering. Because you
cannot brake and steer as you usually would,
this could lead to accidents and serious inju-
ries.
— If you leave the vehicle, switch the ignition
off and take the vehicle key with you. If you
do not do this, the engine could be started
and electrical equipment such as the power
windows could be activated. This can lead to
serious injuries.
— For safety reasons, always park the vehicle
with the selector lever in the P position.
Otherwise, there is the risk that the vehicle
could roll unintentionally.
() Note
If the engine has been under heavy load for
an extended period of time, heat builds up in
the engine compartment after the engine is
switched off and there is a risk of damaging
the engine. For this reason, let the engine run
at idle for approximately two minutes before
shutting it off.
@) Tips
For up to 10 minutes after stopping the en-
gine, the radiator fan may turn on again auto-
matically or it may continue to run, even if the
ignition is switched off.
Messages
Pressing the start/stop button again will switch
off the engine


61
>

4S1012721BA
Parking aid

Parking aid
Introduction
Depending on the vehicle equipment, various
parking aids will help you when parking and ma-
neuvering.
The parking system plus assists you while park-
ing by audibly and visually warning you of objects
detected in front of and behind the vehicle
=> page 81.
The rearview camera shows the area behind the
vehicle in the Infotainment system display. The
lines in the rearview camera image help you to
park or maneuver > page 83.

ZA WARNING
— Always look for traffic and check the area
around your vehicle by looking at it directly
as well. The parking system cannot replace
the driver's attention. The driver is always
responsible when entering or exiting 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
which people and objects cannot be detect-
ed. Be especially cautious of small children
and animals.
— The sensors can be displaced by impacts or
damage to the radiator grille, bumper,
wheel housing and the underbody. The park-
ing system may be impaired as a result.
Have an authorized Audi dealer or author-
ized Audi Service Facility check their func-
tion.
— Make sure the sensors are not obstructed by
stickers, deposits or other materials. If they
are, the sensor function could be impaired.
For additional information on cleaning, see
=> page 265.

@) Note
— Some objects are not detected or displayed
by the system under certain circumstances:
— objects such as barrier chains, trailer draw
bars, vertical poles or fences
— objects above the sensors such as wall ex-
tensions
— objects with certain surfaces or structures
such as chain 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
warned about this obstacle.
— Maintain enough distance from the curb to
reduce the risk of damage to the rims.
@ Tips
— The system may provide a warning even
though there are no obstacles in the cover-
age area in some situations, such as:
— certain road surfaces or when there is tall
grass
— external ultrasonic sources such as from
cleaning vehicles
— in heavy rain, snow, or thick vehicle ex-
haust
— We recommend that you practice parking in
a traffic-free location or parking lot to be-
come familiar with the system. Practice
parking in good light and weather condi-
tions.
— You can change the volume of the signals.
— What appears in the display is slightly de-
layed.
— The sensors must be kept clean and free of
snow and ice for the parking aid to operate.
Parking system plus
Description
Parking system plus provides audio and visual
signals when parking.

B4S-0092

Fig. 83 Principle of operation
81

4S1012721BA
Checking and Filling


the high temperature of the emissions sys- or authorized Audi Service Facility to have the
tem could start a fire. malfunction corrected.

— Do not apply underbody protectant in the
exhaust system area, because this increases AN WARNING
the risk of fire. Incorrect use of the connection port for the
On Board Diagnostic System can cause mal-
eo functions, which can then result in accidents
and serious injuries.

Follow the safety precautions > page 228, Gener- — Only allow an authorized Audi dealer or au-
al information. thorized Audi Service Facility to read out the
engine data.

The vehicle may only be driven with unleaded
gasoline, or the catalytic converter will be de- .
stroyed. Engine compartment
Never drive until the tank is completely empty. General information
The irregular supply of fuel that results from that
can cause engine misfires. Uncombusted fuel
could enter the exhaust system, which could

Special care is required if you are working in the
engine compartment
cause overheating and damage to the catalytic For work in the engine compartment, such as
converter. checking and filling fluids, there is a risk of in-
jury, scalding, accidents, and burns. For this
On Board Diagnostic System (OBD) reason, follow all the warnings and general
safety precautions provided in the following in-
formation. The engine compartment is a dan-
gerous area. > /\.
The On Board Diagnostic System monitors the
engine and transmission components that influ-
ence emissions.
ZA\ WARNING
— Turn the engine off.
— Switch the ignition off.
— Set the parking brake.
— Select the “P” (Park) selector lever position.
— Allow the engine to cool.
— Keep children away from the engine com-
partment.
— Never spill fluids on a hot engine. These flu-
ids (such as the freeze protection contained
in the coolant) can catch fire.
— Avoid short circuits in the electrical system.
— Never reach into the radiator fan. The fan is
Engine data can be read out at the On Board Di- temperature-controlled and can turn on
agnostic System connection port using a special suddenly, even when the ignition is switched
testing device > fig. 175. off.
S S$
z a

port for the On Board Diagnostic System (OBD)
On Board Diagnostic System
Indicator light — Never open the engine compartment lid
when there is steam or coolant escaping
from the engine compartment, because
there is a risk that you could be burned.
Wait until no steam or coolant is escaping.
If the S indicator light blinks or turns on, there
is a malfunction that is causing poor emissions
quality and that could damage the catalytic con-
verter. Drive slowly to an authorized Audi dealer
229

Checking and Filling



— Never open the cap on the coolant expan-
sion tank when the engine is warm. The
cooling system is under pressure.
— To protect your face, hands, and arms from
hot steam or coolant, cover the cap with a
thick cloth when opening.
— Do not remove the engine cover under any
circumstances. This increases the risk of
burns.
— Due to the risk of electric shock, never touch
the ignition cable or other components in
the electronic high-voltage ignition system
when the engine is running or is starting.
— If a gear is engaged while the vehicle is sta-
tionary and the engine is running, do not
press the accelerator pedal inadvertently.
Pressing the accelerator pedal will cause the
vehicle to move, and this could result in an
accident.
— If inspections or repairs must be performed
while the engine is running, moving compo-
nents (such as the ribbed belt, generator,
and radiator fan) pose an additional risk.
— Set the parking brake first and select the
“p” (Park) selector lever position.
— Always make sure that no parts of the
body, jewelry, ties, loose clothing, and
long hair can be caught in moving engine
components. Before any work, always re-
move any jewelry and/or ties, tie back long
hair, and make sure all clothing fits close
to the body to reduce the risk of anything
becoming caught in engine components.
— Pay attention to the following warnings list-
ed when work on the fuel system or on the
electrical equipment is required.
— Do not smoke.
— Never work near open flames.
— Always have a working fire extinguisher
nearby.
— All work on the battery or electrical system
in your vehicle can result in injuries, chemi-
cal burns, accidents, or burns. Because of
this, all work must be performed only by an
authorized Audi dealer or authorized Audi
Service Facility.
— Limit your exposure to exhaust and chemi-
cals to as short a time as possible.


ZA\ WARNING
California Proposition 65 Warning:
— Engine exhaust, some of its constituents,
and certain vehicle components contain or
emit chemicals known to the State of Cali-
fornia to cause cancer and birth defects and
reproductive harm. In addition, certain flu-
ids contained in vehicles and certain prod-
ucts of component wear contain or emit
chemicals known to the State of California
to cause cancer and birth defects or other
reproductive harm.
— Battery posts, terminals and related acces-
sories contain lead and lead compounds,
chemicals known to the State of California
to cause cancer and reproductive harms.
Wash hands after handling.


230
() Note
When filling fluids, be sure not to add any flu-
ids to the wrong reservoirs. Otherwise severe
malfunctions and engine damage will occur.
@) For the sake of the environment
You should regularly check the ground under
your vehicle in order to detect leaks quickly. If
there are visible spots from oil or other fluids,
bring your vehicle to an authorized Audi deal-
er or authorized Audi Service Facility to be
checked.

4S1012721BA
Checking and Filling




Coolant Freeze protec-
additive tion
Warm min. 40% min. -13 °F
regions max. 45% (-25 °C)
Cold min. 50% max. -40 °F
regions max. 55% (-40 °C)

@) Note
— Before the start of winter, have an author-
ized Audi dealer or authorized Audi Service
Facility check if the coolant additive in your
vehicle matches the percentage appropriate
for the climate. This is especially important
when driving in colder climates.
— If the appropriate coolant additive is not
available in an emergency, do not add any
other additive. You could damage the en-
gine. If this happens, only use water and re-
store the correct mixture ratio with the
specified coolant additive as soon as possi-
ble.
— Only refill with new coolant.
— Radiator sealant must not be mixed with
the coolant.
@ Tips
In certain weather conditions, water can
evaporate on the radiator and exit the side
vents as steam after stopping the engine.
Adding coolant
Applies to: vehicles without power top

st SN
S QD < a


Fig. 183 Engine compartment: markings on the coolant
expansion tank
Observe the safety precautions > page 229, Gen-
eral information.
Checking the engine coolant level
>» Park the vehicle on a level surface.
>» Switch the ignition off.
> Allow the engine to cool.
> Place a large, thick cloth over the coolant ex-
pansion tank cap and unscrew the cap counter-
clockwise > A\.
> Read the coolant level using the coolant level
float. The coolant level float may only stick out
over the edge of the coolant expansion tank a
maximum of 0.39 in (1 cm) when the engine is
cool.
Adding coolant
If you must add coolant, use a mixture of water
and coolant additive. Mixing the coolant additive
with distilled water is recommended.
> Add coolant in the correct mixture ratio
=> page 236 until the dipstick is no more than
0.39 in (1 cm) above the edge of the coolant
expansion tank.
> Make sure that the fluid level remains stable.
Add more coolant if necessary.
> Close the cap securely.
Coolant loss usually indicates that there is a leak.
Immediately drive your vehicle to an authorized
Audi dealer or authorized Audi Service Facility
and have the cooling system inspected. If the
cooling system is not leaking, coolant loss can re-
sult from the coolant boiling due overheating
and then being forced out of the cooling system.

ZA\ WARNING
— The engine compartment in any vehicle can
be a dangerous area. Stop the engine and al-
low it to cool before working in the engine
compartment. Always follow the informa-
tion found in > page 229, General informa-
tion.
— Never open the engine compartment lid if
you can see or hear steam or coolant escap-
ing from the engine compartment. This in-
creases the risk of burns. The cooling system
is under pressure. When you no longer see
or hear steam or coolant escaping, you may
open the engine compartment with caution. |>

237

Checking and Filling


— When working in the engine compartment,
remember that the radiator fan can switch
on even if the ignition is switched off, which
increases the risk of injury.
— Coolant additive and coolant can be danger-
ous to your health. For this reason, store the
coolant in the original container and away
from children. There is a risk of poisoning.
o Note
Do not add coolant if the expansion tank is
empty. Air could enter the cooling system and
damage the engine. If this is the case, do not
continue driving. See an authorized Audi deal-
er or authorized Audi Service Facility for assis-
tance.

Adding coolant
Applies to: vehicles with power top


° ©
S a + oO


Fig. 185 Power top storage bay: coolant expansion tank
Observe the safety precautions > page 229, Gen-
eral information.
The coolant expansion tank is located in the pow-
er top storage compartment cover on the right
side under the oval metal cover > fig. 185. To
check the coolant level, the vehicle must be level
238
and the power must be in the service position
> fig. 184.
Bringing the closed power top into the
service position
> Switch the ignition on.
> Pull and hold the power top switch.
> Press and hold the rear window switch as well
until the power top moves into the service posi-
tion > fig. 184.
Bringing the open convertible to into the
service position
> Switch the ignition on.
» Press and hold the power top switch.
> Press and hold the rear window switch as well
until the power top moves into the service posi-
tion > fig. 184.
Opening the coolant expansion tank cover
> Stop the engine and allow it to cool.
> Switch the ignition off.
> Carefully remove the bolts in the cover (4) using
a screwdriver and remove the cover. The cool-
ant expansion tank is located underneath
> fig. 185.
Checking the engine coolant level
> Place a cloth over the coolant expansion tank
cap and unscrew the cap counterclockwise
of.
> Read the coolant level using the coolant level
float. The coolant level float may only stick out
over the edge of the coolant expansion tank a
maximum of 0.39 in (1 cm) when the engine is
cool.
Adding coolant
If you must add coolant, use a mixture of water
and coolant additive. Mixing the coolant additive
with distilled water is recommended.
> Add coolant in the correct mixture ratio
=> page 236 until the dipstick is no more than
0.39
in (1 cm) above the edge of the coolant
expansion tank.
> Make sure that the fluid level remains stable.
Add more coolant if necessary.
> Close the cap securely.