brake sensor AUDI A8 2020 User Guide

4N0012721BD
Driver assistance

Audi pre sense basic
Applies to: vehicles with Audi pre sense basic
Audi pre sense basic is automatically active at
speeds of approximately 20 mph (30 km/h) and
higher. Audi pre sense basic can trigger the Audi
pre sense preemptive safety measures during
emergency braking and dangerous braking ma-
neuvers as well as in unstable driving situations,
such as oversteering or understeering.

Z\ WARNING
Follow the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 154.
Audi pre sense front
Applies to: vehicles with Audi pre sense front

The Audi pre sense front uses the data from the
camera and calculates the probability of a rear-
end collision. Within the limits of the system, an
impending frontal impact with vehicles, pedes-
trians), or cyclists!) may be detected in both ur-
ban and rural speed ranges.
Audi pre sense front is active at speeds of approx-
imately
6 mph (10 km/h) and higher. It can react
to pedestrians”) or cyclists!) at speeds up to ap-
proximately 50 mph (85 km/h), and can react to
vehicles at speeds up to approximately 155 mph
(250 km/h).
Early warning/acute warning
The system can recognize various dangerous sit-
uations. The early warning occurs if:
— A vehicle driving ahead brakes suddenly
— Your own vehicle approaches a vehicle in front
of you that is traveling at a significantly slower
speed or that is stationary
—A pedestrian or cyclist!) is standing in the lane
or is moving into the lane
The message Audi pre sense [J and a warning
tone will warn you about the danger.
The brakes may also be applied as an acute warn-
ing when there is an impending collision. You will

D_ This is not available in some countries.
also be warned by an indicator in the instrument
cluster display. When this warning occurs, it may
only be possible to avoid a collision by swerving
or braking strongly.
Automatic deceleration
If you do not react to the acute warning, Audi pre
sense front can brake the vehicle to a full stop
within the limits of the system )). This reduces
the vehicle speed in the event of a collision.
Automatic braking force increase
If Audi pre sense determines that you are not
braking strongly enough when a collision is immi-
nent, it can increase the braking force based on
the
situation.
Take-over
If the message Bo Please take over! appears, the
vehicle has been braked to a stop by Audi pre
sense and you must resume control of the vehi-
cle.

ZX WARNING
— Follow the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 154.
— Audi pre sense front cannot overcome natu-
ral physical laws. It is a system designed to
assist and it cannot prevent a collision in ev-
ery circumstance. The driver must always in-
tervene. The driver is always responsible for
braking at the correct time. Do not let the
increased safety provided tempt you into
taking risks. This could increase your risk of
a collision.
— Audi pre sense front does not react to cer-
tain objects, such as animals, crossing or on-
coming vehicles, bars, railings, or railcars.
— Audi pre sense front may be limited or un-
available when driving in curves.
— Loose objects can be thrown around the ve-
hicle interior during sudden driving or brak-
ing maneuvers, which increases the risk of
an accident. Store objects securely while
driving.

183

4N0012721BD
Driver assistance

Intersection assistant
Applies to: vehicles with intersection assistant
o D
oS
& > &
ao

Fig. 144 Instrument cluster: directional display from the
intersection assistant
General information
The intersection assistant can warn the driver of
approaching cross traffic in complex intersections
> fig. 143.
The system monitors intersections and exit
ramps using the sensors installed in the vehicle
that detect the front and side areas around the
vehicle. Moving objects that are approaching
from behind, such as cars, are detected within
the limits of the system > A\. The system can al-
so warn the driver of a potential collision with de-
tected approaching cross traffic in intersections
and exit ramps with poor visibility.
Requirements for using the intersection
assistant:
— The speed must not be higher than approxi-
mately 18 mph (30 km/h).
— The “D” gear is selected.
Displays, warnings, and braking
— Display: the red arrow (@) can indicate the direc-
tion from which the cross traffic is approaching.
The indicator in the upper display only appears
when the parking aid is activated. For vehicles
with peripheral cameras only in the Front and
Front corner camera views. The display only ap-
pears in the instrument cluster > fig. 144 when
the Driver assistance display is open in the on-
board computer > page 16.
— Warnings: the message Cross traffic! © can
warn you of critical cross traffic when driving
forward. There may also be an audible signal.
— Automatic brake activation: if you do not react
to a warning, a brief braking by the system can
warn you of a potential collision with an ap-
proaching object when driving forward at
speeds up to approximately 6 mph (10 km/h).
Switching the intersection assistant on and
off
— The system can be switched on and off in the
MMI & page 157.
Messages
If Ey, or > is displayed when there is a mal-
function, the intersection assistant functions
may be unavailable 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.

Z\ WARNING
— Follow the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 154.
— The intersection assistant will not provide
alerts about people and cannot warn you
about every type of approaching objects,
such as cyclists. Always monitor the traffic >

189

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.

4N0012721BD
Parking and maneuvering


ZA\ WARNING
Follow the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 154.
@) Note
Keep enough distance from the curb to avoid
damage to the rims.
@) Tips
— Certain settings are stored automatically in
the active personal profile.
— If the parking aid is deactivated, it can only
be reactivated automatically when one of
the following conditions is met:

— The vehicle speed exceeds 6 mph
(10 km/h)
— The ignition is switched off and back on
again
— The parking brake is set and then released
—The “P” gear is engaged and released
again
Applies to: vehicles with parking system plus

Fig. 146 Upper display: distance indicator
If the sensors detect an obstacle, audible and vis-
ual signals will warn you.
Visual warnings
The visual warnings in the upper display help you
to detect the critical vehicle area and to estimate
the distance to an obstacle.
Red segments (4) show detected obstacles that
are in your vehicle's path. The red lines (2) mark
the expected direction of travel based on the
steering angle. A white segment (3) indicates a
detected obstacle that is outside of the vehicle's
path. The closer your vehicle comes to the obsta-
cle, the closer the segments will move to the ve-
hicle. The collision area has been reached when
the next to last segment is displayed. Obstacles
in the collision area, including those outside of
the vehicle's path, are shown in red. Do not con-
tinue driving farther.
Audio signals
The closer your vehicle gets to a detected obsta-
cle, the shorter the time between the audible sig-
nals. A continuous tone sounds when an obstacle
is less than approximately 1 foot (0.30 m) away
from the front or rear of the vehicle. Do not con-
tinue driving forward or in reverse >(@).
> To deactivate audio signals while parking, press
«Jin the upper display. The audio signals will be
automatically activated again the next time the
parking system is activated.
Adjusting the volume
You can adjust the volume to your preferences.
The settings depend on the vehicle equipment.
> Applies to: MMI: Select on the home screen:
VEHICLE > Parking aid. Or
> Press |---| in the upper display when the parking
system is active.


Possible settings:
Front volume - Volume for the front area.
Rear volume - Volume for the rear area.
Entertainment fader - The volume of the audio/
video source is lowered when the parking system
is activated.
The new level is demonstrated briefly* when the
volume is adjusted.
Error messages
If P4 appears, the sensor in the respective area
or the speaker is faulty. Drive immediately to an
authorized Audi dealer or authorized Audi Service
Facility to have the malfunction repaired.
If Avis displayed in the MMI, the ultrasonic sen-
sor indicated is icy or dirty. Clean the area in front
of the sensors > page 156. >
193

Parking and maneuvering


A WARNING
— Follow the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 154.
— The Surroundings and 3D surroundings are
created from the individual camera images.
The vehicle image is shown by the system.
Objects and obstacles above the camera are
not displayed.
@) Note
Only use the images provided by the camera
on the rear of the vehicle when the luggage
compartment lid is completely closed. Make
sure any objects you may have mounted on
the luggage compartment lid do not block the
rearview camera.
iG) Tips
— Depending on the selected gear, it will auto-
matically switch between the Front and
Rear views. If you switch the view manually,
the automatic front/rear camera change will
be temporarily deactivated.
— When first activated while a forward gear is
engaged, the Front corner is displayed.

Rear cross-traffic assist
Applies to: vehicles with rear cross-traffic assist
7]
s
g
= = a

Fig. 151 Sensor detection range for rear cross-traffic assist
198

Fig. 152 Upper display: rear cross-traffic assist display
General information
The rear cross-traffic assist monitors the area be-
hind and next to the vehicle using radar sensors
at the rear corners of the vehicle. The system can
detect moving objects that are approaching, such
as vehicles > fig. 151. A display in the MMI and
various warnings provide assistance when exiting
a parking space.
Requirements for using the rear cross-traffic
assist:
— Reverse gear must be engaged and the speed
while driving in reverse must not be higher than
6 mph (10 km/h).
Displays, warnings, and braking
— Display: the indicator @ in the upper display
only appears when the parking aid is activated.
In vehicles with peripheral cameras, the display
only appears in the Rear and Rear corner cam-
era views. Arrows show the direction from
which the cross traffic is approaching.
— Audible warnings: an audio signal may sound
as an additional warning when driving in re-
verse.
— Automatic brake activation: if you do not react
to a warning, a brief braking by the system can
warn you of a potential collision with an ap-
proaching object.
The audible warning signal and the automatic
brake activation occur only when driving in re-
verse.
Switch rear cross-traffic assist on and off
— Applies to MMI: Select on the home screen: VE-
HICLE > Parking aid > Rear cross-traffic assist.
Or

4N0012721BD
Parking and maneuvering


— Select |--| > Rear cross-traffic assist in the upper
display when the parking system is active.

Messages
re or > is displayed when there is a mal-
function, the rear cross traffic assist functions
may be unavailable 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 sensor area in the ve-
hicle rear and try to turn the systems on 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.

Z\ WARNING
— Follow the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 154.
— The rear cross-traffic assist will not provide
alerts about people and cannot warn you
about every type of approaching objects,
such as cyclists. Always monitor the traffic
as well as the vehicle's surroundings with di-
rect eye contact.
— The system may not react if objects are ap-
proaching very quickly.
— The rear cross-traffic assist will not provide
alerts if your vehicle is parallel parked or if
your vehicle is pulled too far into the park-
ing space so that it is hidden by adjacent
vehicles.

@) Tips
— Certain settings are stored automatically in
the active personal profile.
— Once an automatic brake activation occurs,
the system cannot initiate another activa-
tion for several seconds.
— System functions may not be available if the
ESC is limited or switched off, or if there is a
malfunction.
— If there is an acoustic warning signal from
the rear cross-traffic assist, then the park-
ing system may not warn you of detected
obstacles under certain circumstances.
— For an explanation on conformity with the
FCC regulations in the United States and the
Industry Canada regulations, see
> page 339.
— The coverage areas of the sensors > fig. 151
are diagrams and do not represent a true-
to-scale image of the sensor ranges.
199

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

4N0012721BD
Fuses and bulbs


Windshield washer system/headlight
washer system

Right headlight electronics

Front seat heating

Right rear door control module

Sockets

Left front door control module

Parking heater



. | Equipment

Anti-theft alarm system

Engine control module

Horn

Parking brake

Gateway control module (diagnosis)

Interior headliner lights

Driver assist systems control module

Airbag control module

Electronic Stabilization Control (ESC), An-
ti-Lock Braking System (ABS)

12
Rear climate control unit, diagnostic con-
nector,
light/rain sensor

13) Climate control system

14 Right front door control module

15 Climate control system, body electronics

16 Brake system



13 | Radiator fan

14 | Engine control module

15 | Engine sensors


16 | Fuel pump

Fuse assignment - luggage compartment



Fig. 213 Luggage compartment: fuse panel with plastic
bracket


No. Equipment





Fus 1 |Thermal management
No. | Equipment 5 |Air suspension
2 |Engine components 6 |Automatic transmission
3 | Engine components 7 |Right rear seat adjustment
4 | Engine components 8 |Rear seat heating
5 | Brake light sensor 9 |Central locking, left tail light
6 |Engine components 10 | Front belt tensioner on driver's side
7 |Engine components 11 | Central locking, rear blind, fuel filler door
8 | Engine components 12 |Luggage compartment lid
9 | Engine components
10 | Oil pressure sensor, oil temperature sensor

bh BR Engine start

Bb N

Engine components


No. | Equipment

1 | Rear climate control system blower >

329

4N0012721BD

Online services
refer toconnect.........c cece eee eee 216
Online system update.................. 267
Online traffic information............... 238
OPeNiiG se « swesius © o cxouens « eteweas we euseoue ao eemeoe 43
Automatic luggage compartment lid...... 51
Convenience opening..............02005. 54
Fuel-filler:door's « s sis +o wave © wane aes 271
HOOd .. 1... cece eee 276
Luggage compartment lid............... 50
Luggage compartment lid with foot motion . 52
Panoramic glass roof................00. 55
Rear window sunshade...............-. 56
Sunshade (root) « secon oo scone 2 x omens e 2 soc 55
Sunshade (windows) ..............0000- 54
Windows ......... 000s 54
Opening and closing
refer to Unlocking and locking........ 43,48
Opening the charging port door.......... 139
Operating
AUGitaBlet scars a « aren oo mews 4 » eee 2 18, 33
Head-up display................002200. 37
Instrument cluster........-...02-.005- 13
Multifunction steering wheel............ 13
Multi Media Interface............... 18,21
Rear Seat Remote.............00008 18,27
Textinputss « ses ¢ 2 ces « + sews ¢ ee x 8 oe 24
Touch displays. « « scvssne sv carers x sean wna 18
Voice recognition system............... 38
Operating mode................02-000. 119
Optional equipment number............. 341
Options
Media... ... cece eee eee eee 259
Navigation: « = savas 5 2 anes x ¥ eras eo Ree 239
RadiOves. cs scans x awccane w cecteee wv cmeemes QUESIAEINOISE
« wc ss wise so arate 4 x oe 120
Overview (Cockpit). » swe: ¢ 2 news s ¢ sees + 2 oes 6
P
Paint damage’ « « sews « ¢ mews 2 wows go pees 311
PAltMUMBER: sees = a wees = x eee Fy eee SY 341
Panic button. ........ 20.0.0... eee ee eee 47
PANIC button....... 0... cee eee eee eee 47
Panic function ............... 0000 cece 47
Panoramic glass roof................200. 55
Convenience opening and closing......... 54
Emergency closing. .........seeeseeeees 56
Quick opening and closing.............. 56
Parental control
AUGitablett « scccozs oo: omeseis a v wee » wiotwas 6 sei 35
DVD... 0... eee eee 260
Rear Seat Remote: «cic ss cies se ncen ses 28
Parking Sides s < eves x x ewes x mes « 2 pee 192
Cleaning the sensors and camera........ 310
Peripheral cameras.................-. 194
RearvieW CaMEraeuy. & ¢ ews 4 s aweas a ew 194
Parking and maneuvering..............- 192
Parking
brake
refer to Electromechanical parking brake. 124
Parking heater
refer to Auxiliary climate control........ 108
Parking lightSici 2s mene + wae os were as eee 60
Parking lock emergency release.......... 116
Parking system
Adjusting the volume................. 193
Automatic activation.................. 192
Deactivating rear cross-traffic assist... . . 198
Parking systems
Parking system plus...............00. 192
PasS=through ses x & news & & eawey xe veiw soa 101
PathSis = eras 2 sees 5 2 eee EE ER ee eR YO Re 19
Pause (media files) ..............200000. 255
Pedals... 0. cee eee eee eee 115
Pedestrian detection................... 163
Perchlorate’. «ices ow aeeiue « « semis « sustonne © a 336
Peripheral cameras............---0000- 194
Personal route assistance. ...........4.. 233
Phone
Answering/endingacall............... 207
Connecting a second mobile device...... 201
Connecting with the MMI.............. 212
Disconnecting a mobile device.......... 202
Settings.......... 0.00. e eee eee eee 210
Phonebook
refer to Contact’ ss < s esa% i sean st roan 205
Playback (media) ............000000000. 255
Plug-in-hybrid drive
POWer Meter es « s sews x o news 3 o cae oe ew 15
351