brake light AUDI A8 2020 Owner's Manual

Driver assistance

sensors > page 156, fig. 117 and try to turn on
the systems again later.
If the malfunction remains, drive to an author-
ized Audi dealer or authorized Audi Service Facili-
ty immediately to have the malfunction correct-
ed.

ZA\ WARNING
— Follow the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 154.
— Pay attention to traffic and the area around
your vehicle when predictive control is
switched on. The driver is always responsible
for assessing the traffic situation.
— The system does not consider “right of way”
rules and does not respond to traffic lights,
so lack of driver attention in these situations
can increase the risk of an accident.
— The speed when driving through curves may
be different from what you as a driver would
do or may not be suitable for the weather
and road conditions. If necessary, apply the
brakes and reduce the selected speed to be
maintained in the Adjustment to curves
along route setting to reduce the risk of an
accident.

G) Tips
— Predictive control can exceed or drop below
the maximum permitted speed. The driver
is responsible for adhering to the permitted
speed limit.
— The traffic signs on the road always take pri-
ority over the display. The driver is always
responsible for adhering to the regulations
applicable in the country where the vehicle
is being operated.
—If a speed limit is detected, the marking @
of the set speed limit will be adjusted even
if the adaptive cruise assist is not actively
regulating.
— Control by the system depends on which
adaptive cruise assist driving program is set
or on the selected Audi drive select* mode.

YD In certain countries
170
— After switching on the ignition and first
driving onto a freeway or similar road with-
out a speed limit, the system will regulate
the speed to 80 mph (130 km/h). Then
the system adjusts to the last speed set by
the driver.
— There is no adaptation to speed limits when
driving through highway interchanges and
when driving on or off the expressway.
— The system can fail to provide control or the
control may be faulty if the values from the
camera-based traffic sign recognition* are
incorrect or the navigation system map data
is outdated.
— When route guidance is switched on, the
system adapts to the route provided by the
navigation system. Driving without route
guidance or leaving a route can result in
faulty control.
— Certain settings are stored automatically in
the active personal profile.
Adaptive cruise assist
General information
Applies to: vehicles with adaptive cruise assist
Depending on the vehicle equipment, the adap-
tive cruise assist may consist of the following
functions:
Within the limits of the system, the adaptive
speed and distance control assists the driver in
controlling the speed and the set distance to the
vehicle driving ahead. If the system detects a ve-
hicle driving ahead, the adaptive cruise assist can
brake and accelerate your vehicle within the lim-
its of the system. On open roads with no traffic, it
functions like a cruise control system. The stored
speed is maintained. When approaching a vehicle
driving ahead, the adaptive cruise assist auto-
matically brakes to match that vehicle's speed
and then maintains the set distance as much as
possible. As soon as the system does not detect a
vehicle driving ahead, adaptive cruise assist ac-
celerates up to the set speed.

Driver assistance

— The adaptive cruise assist does not respond to
people, animals, or objects that are crossing or
approaching from the opposite direction.

Z\ WARNING
Follow the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 154.
Display overview
Applies to: vehicles with adaptive cruise assist

3] S|
me Ny Iz G3

Fig. 128 Instrument cluster: driver assistance display
Indicator lights and messages in the speedome-
ter @ -@) inform you about the driving situation
and the settings. In the Driver assistance display
@- ©, you can find more detailed information
about the system. The displays depend on the
country and equipment.
Display in the speedometer
The display in the speedometer is not available in
all layouts*.
@ Marking for the set speed
@ Current vehicle speed
@® Available speed range for adaptive cruise as-
sist (example)
172
Image in the Driver assistance display
The display only appears when the Driver assis-
tance display is open in the on-board computer
=> page 16.
Messages and settings
Detected vehicle driving ahead
Set target distance
If you fall below the set distance, the dis-
tance bars turn red from the bottom upward.
Your vehicle
©®
CO©®
Availability of lane departure warning
= page 180 and lane guidance
© Lane guidance for adaptive cruise assist is ac-
tive 1 or not active
Indicator lights
A - The speed/distance control is active. No
vehicles were detected ahead. The stored speed
is maintained.
Ba - The speed/distance control is active. A vehi-
cle was detected ahead. The adaptive cruise as-
sist controls the speed and distance from the ve-
hicle driving ahead, and accelerates and brakes
automatically.
A - The speed/distance control is active but the
vehicle is not ready to drive. A vehicle was de-
tected ahead. Your vehicle is stationary and will
not start driving automatically.
BS - The speed/distance control is active but the
vehicle is not ready to drive. No vehicles were de-
tected ahead. Your vehicle is stationary and will
not start driving automatically.
aA - The automatic braking is not enough to
maintain a sufficient distance to a vehicle driving
ahead. You must intervene > page 177, Driver in-
tervention request.
& This indicator light appears if steering activity
is no longer detected. Always keep your hands on
the steering wheel so you can be ready to steer at
any time. The indicator light will also turn off, for
example if the steering power from the system is
not sufficient and adaptive cruise assist is can-
celed > page 175.

4N0012721BD
Driver assistance



ZA\ WARNING
Follow the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 154.

Using adaptive cruise assist
Applies to: vehicles with adaptive cruise assist


RAZ-0096

Fig. 129 Lever: using adaptive cruise assist


2
z
5
©

B4M-0232

Fig. 130 Operating lever: changing the speed
Switching on
> To switch on the adaptive cruise assist, pull the
lever up to position @ until it engages.
Storing the speed and activating regulation
If you have switched the system on, you can set
the current speed as the “regulated speed” and
activate regulation:

> Press the SET button (2). The set speed is indi-
cated with a marking in the speedometer (@)
=> page 172, fig. 127 and shown in the instru-
ment cluster > A\.
> To store the speed when stationary, the brake
pedal must also be pressed.
You can set any speed between 20 mph
(30 km/h) and the maximum possible speed
range @).
Pausing cruise control
The control can be stopped at any time:
> While driving or when the vehicle is stationary:
press the lever away from you in the direction
of the arrow. Or
> while driving: Press the brake pedal.
The A indicator light turns off.
Resuming regulation
The previously set speed can be resumed at any
time after a pause.
> To resume cruise control while driving, pull the
lever
toward you in the direction of the arrow.
> To resume cruise control when stationary, pull
the lever toward you in the direction of the ar-
row while pressing the brake pedal.
Changing the speed
> To increase or decrease the set speed in smaller
increments, briefly tap the lever toward @) or
© to the first level.
> To increase or decrease the set speed in larger
increments, briefly tap the lever toward @) or
© to the second level.
> To increase or decrease the set speed quickly,
hold the lever toward () or ©) until the mark-
ing in the speedometer @) > page 172, fig. 127
has reached the desired speed.
Preselecting a speed
You can also preselect the set speed when adap-
tive cruise assist is not active by moving the lever
in the desired direction toward () or C). Activate
the previously selected speed by pulling the lever
toward you in the direction of the arrow.
Switching off
If you do not want to use the adaptive cruise as-
sist for a longer period of time, you can switch it
off.
> To switch off the adaptive cruise assist, push
the lever away from you to position © until it
engages.
The indicator light and the set speed will turn on. >
173

4N0012721BD
Driver assistance

— The driver's hands are not on the steering
wheel
Steering intervention request
If no steering activity is detected or the steering
power is not sufficient, the driver steering inter-
vention request will alert the driver using audio
and visual signals. Take over the steering and
keep your hands on the steering wheel so that
you will be ready to steer at any time. The system
will become inactive after a short time and will
only be active again later.
If the driver does not take over steering, adaptive
cruise assist will be canceled. If the vehicle is
equipped with emergency assist and it is ready to
function, it will be activated > page 190.

ZA WARNING
Follow the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 154.

@ Tips
— Always keep your hands on the steering
wheel. The driver is always responsible for
adhering to the regulations applicable in
the country where the vehicle is being oper-
ated.
— It is recommended to only switch on lane
guidance on well-constructed roads.
— Certain settings are stored automatically in
the active personal profile.
—The & fig. 131 button switches lane guid-
ance availability and the lane departure
warning on or off simultaneously, if lane
guidance is preset in the adaptive cruise as-
sist settings.
Setting the distance
Applies to: vehicles with adaptive cruise assist

B4M-0234



Fig. 132 Operating lever: setting the distance
If you adjust the speed, you must also change the
time gap to the vehicle driving ahead. The higher
the speed, the greater the distance that is need-
ed.
> Tap the rocker switch to display the distance
that is currently set.
> To increase or decrease the distance in incre-
ments, tap the switch again toward G) or ().
The newly-set distance will be shown briefly, for
example with the indicator light. In the Driv-
er assistance display, a graphic display is shown
instead of the indicator lights > page 172,
fig. 128. The display matches the functions of
the indicator lights.
When approaching a vehicle driving ahead, the
adaptive cruise assist brakes to the set speed and
then maintains the set distance. If the vehicle
driving ahead accelerates, then the adaptive
cruise assist will also accelerate up to the speed
that you have set.
The following distances can be set:
175

4N0012721BD
Driver assistance

Driving in stop-and-go traffic
Applies to: vehicles with adaptive cruise assist
> Press the brake pedal to slow your vehicle
down.
S 3 S z
ee

Fig. 134 Instrument cluster: safe start monitor
Stopping with adaptive cruise assist
The adaptive cruise assist also assists you in stop-
and-go traffic. Within the limits of the system,
your vehicle may brake and remain at a stop if a
vehicle driving ahead stops.
Starting to drive with adaptive cruise assist!)
As long as the message ready to drive and aA is
displayed, your vehicle will begin driving when
the vehicle ahead starts to move > /\.
If you are stopped for several seconds, your vehi-
cle will no longer drive autonomously for safety
reasons, and the message will turn off.
> To extend ready to drive for several seconds or
reactivate, pull the lever briefly towards you in
the direction of the arrow > page 176, fig. 133.
> To resume manual control of the vehicle, tap
the accelerator pedal.
Safe start monitor
The vehicle can still start to drive even if certain
obstacles are detected when starting to drive
=> /\. For example, if an obstacle is detected by
the camera behind the windshield, the a indica-
tor light will warn you of the danger.
If you are in the Driver assistance display, the
display @) © fig. 134 and the message Warning!
will also appear. An audio signal will also sound.
Your vehicle will drive more slowly when starting.
This may also occur in some situations when
there is no apparent obstacle.

D_ This is not available in some countries.
Z\ WARNING
— Follow the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 154.
— If the message ready to drive!) appears,
your vehicle will start driving even if there is
an obstacle between your vehicle and the ve-
hicle ahead. To reduce the risk of an acci-
dent, always make sure there are no obsta-
cles between your vehicle and the vehicle
driving ahead.
G) Tips
For safety reasons, adaptive cruise assist is
only active if:

— The driver's safety belt is fastened
— All doors and the hood are closed
— Your vehicle is not stopped for a long period
of time
Tamia e cme [sid
Applies to: vehicles with adaptive cruise assist

Fig. 135 Instrument cluster: request for driver interven-
tion
The request for driver intervention instructs you
to resume manual control of the vehicle if the
adaptive cruise assist braking function is not able
to maintain a sufficient distance to the vehicle
ahead. The system will warn you of the hazard
with the A indicator light and the message Dis-
tance!.
177
>

Driver assistance

The display @ only appears when the Driver as-
sistance display is open in the on-board
computer > page 16.

ZA WARNING
Follow the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 154.
Adjusting the adaptive cruise assist
Applies to: vehicles with adaptive cruise assist

You can adjust the adaptive cruise assist to your
own preferences. The settings depend on the ve-
hicle equipment.
> Applies to: MMI: Select on the home screen:
VEHICLE > Driver assistance > (<3) > Adaptive
cruise assist.
Possible settings:
Lane guidance - If lane guidance is also active
when adaptive cruise assist control is active, you
can switch it on or off.
Driving program - Depending on the driving pro-
gram and the distance that are set, the vehicle
handling will be adjusted from Sport to Moder-
ate and the lane guidance haptic feedback will be
adjusted.
Store last distance - The last distance that was
set will be stored after the ignition is switched
off. If the distance is not stored, distance
(time distance of approximately 1.8 seconds) is
automatically preset every time the ignition is
switched on.
Applies to: vehicles with efficiency assist
Predictive control - When predictive control is
switched on, the system reacts automatically to
situations > page 169.
G) Tips
Certain settings are stored automatically in
the active personal profile.
178
Messages
Applies to: vehicles with adaptive cruise assist
a | or is displayed when there is a malfunc-
tion, the adaptive cruise assist functions may be
unavailable or limited.
A message that indicates the cause and possible
solution may appear with some displays. The
weather conditions may be too poor or a sensor
may be covered. Clean the area in front of the
sensors > page 156, fig. 117, > page 156,
fig. 118 and try to turn on the systems again lat-
er.
If the malfunction remains, drive to an author-
ized Audi dealer or authorized Audi Service Facili-
ty immediately to have the malfunction correct-
ed.
Applies to: vehicles with narrowed road assist
Narrow area
Depending on vehicle equipment, this message
appears in the Driver assistance display if the
adaptive cruise assist is adjusting the speed ina
narrow area, for example a construction zone.
Adaptive cruise assist: Please take over!
This message appears if the vehicle rolls back
when starting ona slight incline, even though the
systems are active. Press the brake pedal to pre-
vent the vehicle from rolling or starting to move.
The message will also appear, for example if the
steering power from the system is not sufficient
and adaptive cruise assist is switched off.
Adaptive cruise assist: limited availability.
See owner's manual
This message appears when the sensor view is
limited, for example, when weather conditions
are too poor or a sensor is covered. You can
switch on the adaptive cruise assist, but certain
functions such as assistance in narrow areas will
not be available. Under certain circumstances,
some objects may be detected late or may not be
detected at all. Be especially careful. However,
cleaning the area in front of the sensors
=> page 156, fig. 117, > page 156, fig. 118 may
correct the malfunction.

Driver assistance


as well as the vehicle's surroundings with di-
rect eye contact.
— The system may not react if vehicles are ap-
Proaching very fast.
@ Tips
For an explanation on conformity with the
FCC regulations in the United States and the
Industry Canada regulations, see > page 339.


Emergency assist
Applies to: vehicles with emergency assist
General information
Within the limits of the system, the emergency
assist detects if the driver is inactive. In these in-
stances, the system warns the driver, assumes
control of the vehicle if necessary, and brings the
vehicle automatically to a stop in the lane.
Regardless of the speed, the emergency assist is
automatically available when the adaptive cruise
assist* is activated. When the adaptive cruise as-
sist® is deactivated, the system is only active at
speeds higher than approximately 40 mph
(65 km/h).
Emergency assist functions
Within the limits of the system, the emergency
assist monitors the driver’s steering, accelerator,
and brake pedal activity. Depending on the se-
verity of the situation, it may initiate visual, au-
dio, and haptic warnings in stages:
— Reduces the speed
— Messages
— Lowers the volume of the Infotainment system
— Audible warning
— Tightening of the safety belt
—A brief application of the brakes

D_ This function is not available in every market and on all ve-
hicle equipment levels.
190
If the driver remains inactive despite the warn-
ings, the emergency assist controls the vehicle
within the limits of the system:
— The Audi pre sense preemptive safety measures
are triggered > page 182.
— The vehicle will stay in the lane and will be
braked to a stop.
— As soon as the vehicle comes to a full stop, the
emergency flashers are activated and the vehi-
cle prepares for the vehicle passengers to be
rescued. The parking brake is set, “P” gear is
engaged, the doors are unlocked, and the inte-
rior lighting is activated. If there is no move-
ment for several seconds, the emergency call ))
will be made if necessary.
Overriding the emergency assist
You can override the emergency assist > A\:
— Move the steering wheel. Or
— Press the brake pedal. Or
— Press the accelerator pedal distinctly.
When stationary, you can end the emergency as-
sist by leaving the "P" position or releasing the
parking brake > page 124.
Switching the emergency assist on and off
The system can be switched on and off in the
MMI ®& page 157.
Messages
1f E or EB is displayed when there is a malfunc-
tion, the emergency assist functions may be un-
available or may be limited.

A message that indicates the cause and possible
solution may appear with some displays. The
weather conditions may be too poor or a sensor
may be covered. Clean the area in front of the
sensors > page 156 and try to turn on the sys-
tems again later.
If the malfunction remains, drive to an author-
ized Audi dealer or authorized Audi Service Facili-
ty immediately to have the malfunction correct-
ed.

Checking and Filling

Stop the vehicle and check the brake fluid level.
See an authorized Audi dealer or authorized Audi
Service Facility for assistance.
Changing the brake fluid
Brake fluid should be changed at regular inter-
vals. Have the brake fluid changed by an author-
ized Audi dealer or authorized Audi Service Facili-
ty. The authorized Audi dealer or authorized Audi
Service Facility will inform you of the replace-
ment intervals.

Z\ WARNING
— If the brake fluid level is below the MIN
marking, it can impair the braking effect and
driving safety, which increase the risk of an
accident. Do not continue driving. See an au-
thorized Audi dealer or authorized Audi
Service Facility for assistance.
— If the brake fluid is old, bubbles may form in
the brake system during heavy braking. This
could impair braking performance and driv-
ing safety, which increases the risk of an ac-
cident.
— The brake fluid in your vehicle must meet
the standard VW 501 14 and is available at
an authorized Audi dealer or authorized
Audi Service Facility. If this brake fluid is not
available, another high-grade brake fluid of
equivalent quality may be used, and it must
meet the U.S. Federal Motor Vehicle Stand-
ard (FMVSS) 116 DOT 4, Class 6.

@) Note
— If the brake fluid level is above the MAX
marking, brake fluid may leak out over the
edge of the reservoir and result in damage
to the vehicle.
— Do not allow any brake fluid to come into
contact with the vehicle paint, because it
will corrode the paint.
Electrical system
If the = / B or = indicator light turns on,
there is a malfunction in the power supply, the
battery, or the vehicle electrical system.
284
= / B Electrical system: malfunction! Safely
stop vehicle
Do not continue driving and switch the ignition
off > A\. See an authorized Audi dealer or author-
ized Audi Service Facility for assistance.
= Electrical system: malfunction! Restart not
possible. Please contact Service
If you switch the ignition off, you will not be able
to restart the vehicle. Vehicle functions/driving
stability may be limited. Drive to an authorized
Audi dealer or authorized Audi Service Facility im-
mediately.
=} Electrical system: malfunction! Please con-
tact Service
Switch off all electrical equipment that is not
needed. Vehicle functions/driving stability may
be limited. Drive to an authorized Audi dealer or
authorized Audi Service Facility immediately.
= Electrical system: low battery charge. Bat-
tery
will be charged while driving
The starting ability may be impaired.
If this message turns off after a little while, the
vehicle battery has charged enough while driving.
If this message does not turn off, drive immedi-
ately to an authorized Audi dealer or authorized
Audi Service Facility.

ZA\ WARNING
When there is an electrical system malfunc-
tion, vehicle functions may not work and driv-
ing stability may be limited, which increases
the risk of an accident. Do not continue driv-
ing and switch the ignition off. See an author-
ized Audi dealer or authorized Audi Service Fa-
cility for assistance.

Battery
Pela lame ered)
Because of the complex power supply, all work on
batteries such as disconnecting, replacing, etc.,
should only be performed by an authorized Audi
dealer or authorized Audi Service Facility > A\. >

Care and cleaning


height and width of the inside of the car
wash.
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.
—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 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.
@) Note — 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.

— 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 @) For the sake of the environment
function.
—To reduce the risk of damage to the rims
and tires, compare the width between the
wheels on your vehicle with the distance be-
tween the guide rails in the car wash.
—To reduce the risk of damage, compare the
height and width of your vehicle with the
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 are not listed, consult an authorized Audi dealer
components, refer to the following tables. The or authorized Audi Service Facility. Also follow
information contained there is simply recommen- __ the information found in > A.
dations. For questions or for components that
Exterior cleaning



Component Situation Solution
Windshield wiper | Deposits Soft cloth with glass cleaner > page 69
blades
Headlights/ Deposits Soft sponge with a mild soap solution®
Tail lights
Sensors/ Deposits Sensors: soft cloth with a solvent-free cleaning solution
camera lenses Camera lenses: soft cloth with an alcohol-free cleaning sol-
ution
Snow/ice Hand brush/solvent-free de-icing spray >

310

Emergency assistance

4. Attach the other end of the negative cable
(black) to the jump-start pin @) on the vehi-
cle.
Starting the engine
> Start the engine in the vehicle giving the charge
and let it run at idle.
> Now start the engine in your vehicle, which has
the
drained battery.
> If the engine does not start, stop the starting
procedure after 10 seconds and then repeat it
after approximately 30 seconds.
> Turn on the rear window defogger in your vehi-
cle in order to reduce any voltage peaks that
may occur when disconnecting the jump start
cables. The headlights must be switched off.
> With the engines running, remove the cables in
reverse order of the way they were installed.
> Close the red cover on the positive terminal.

ZA WARNING
— Never connect the jump start cable directly
to your vehicle battery. Only use the connec-
tions in the engine compartment.
— Do not touch the non-insulated parts of the
terminal clamps. The cable must also not
come into contact with vehicle components
that conduct electricity when it is connected
to the positive vehicle battery terminal. This
can cause a short circuit.
— The plugs on the battery cells must not be
opened.
— Keep ignition sources (such as open flames,
burning cigarettes, etc.) away from the vehi-
cle batteries to reduce the risk of an explo-
sion.
— Route the jump start cables so they cannot
get caught in the moving parts in the other
vehicle's engine compartment.

@ Note
Please note that the connecting process previ-
ously described for the jump start cables is in-
tended for when your vehicle is being jump
started.
324
G) Tips
Make sure that the connected jump start ca-
bles have sufficient contact with metal.
Towing
General information
You should only perform the steps that follow if
you have the necessary tools and technical ex-
pertise.
Towing requires a certain amount of practice.
Audi recommends contacting a towing company
to have the vehicle transported.
You should only have your vehicle towed by an-
other vehicle when disabled in exceptional cir-
cumstances. Inexperienced drivers should not
tow.
Notes on towing
When the engine is stopped, the transmission
will not be sufficiently lubricated if traveling at
high speeds and long distances:
— 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 may only be towed with the front axle
raised. Do not wrap any chains or cables 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 ifatow >