2021 AUDI E-TRON brake sensor

Driver assistance

Driving situations
The situations to which the system reacts de-
pends on the vehicle speed.
Up to speeds of approximately 50 mph
(85 km/h), the system may react to the following
situations:
— Pedestrians and cyclists in your lane
Up to speeds of approximately 155 mph
(250 km/h), the system may react to the follow-
ing situations:
— A vehicle driving ahead clearly applies the
brakes
— When approaching a vehicle ahead that is clear-
ly traveling more slowly
— When approaching a stationary vehicle
Prewarning
To warn about detected dangers, Audi pre
sense o will appear in the instrument cluster
and an audio signal will sound.
A brief application of the brakes
If a collision is imminent, there may be an acute
warning using a brief application of the brakes.
You will also be warned about the danger by an
indicator in the instrument cluster display. You
may only be able to avoid a collision by swerving
or braking strongly.
Automatic braking force increase
If there is an impending collision and you are not
applying the brakes enough, the braking force
may be increased, depending on the situation.
Automatic braking
If you do not react to the acute warning, the sys-
tem may apply the brakes with strong braking
force within the limits of the system in order to
reduce the speed of impact in the event of a colli-
sion.
If the brakes were applied until the vehicle stop-
ped, © Please take over! will appear in the in-
strument cluster and you must take over control
of the vehicle.
158

ZA WARNING
— Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 129.
— 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.
— In trailer mode, the braking behavior of the
trailer can be different than usual during au-
tomatic braking.
@) Tips
Certain pre sense front functions are switched
off when the hill descent assist is actively con-
trolling the vehicle.
Audi pre sense rear
Applies to: vehicles with Audi pre sense rear

Within the limits of the system, Audi pre sense
rear uses data from radar sensors at the rear cor-
ners of the vehicle and calculates the probability
of a rear-end collision with the vehicle behind
you.
Audi pre sense preemptive safety measures can
be initiated if the risk of a collision with the vehi-
cle behind you is detected.

Driver assistance

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. 118 when
the Driver assistance display is open in the on-
board computer > page 14.
— Warnings: the message Cross traffic! @ can
warn about 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 132.
Messages
fi or 2 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 131 and try to turn the system 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.
164

ZA WARNING
— Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 129.
— 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
as well as the vehicle's surroundings with di-
rect eye contact.
— The system may not react if vehicles are ap-
proaching very fast.
G) Tips
— The coverage areas of the sensors > fig. 117
are diagrams and do not represent a true-
to-scale image of the sensor ranges.
— The system complies with United States FCC
regulations and ISED regulations
> page 288.


Emergency assist
Applies to: vehicles with emergency assist
General information
Within the limits of the system, emergency assist
can detect inactivity from the driver. In these in-
stances, the system will warn the driver, assume
control of the vehicle if necessary, and bring 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 available
at speeds above approximately 40 mph
(65 km/h).
Emergency assist functions
Measures may be initiated in stages. The vehicle
can be controlled with the limits of the system.
The measures depend on the dangerous situation
and the vehicle equipment:
— Visual and audio warnings
— Vehicle control
— Reduction of vehicle speed in stages

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Driver assistance

— Lowers the volume of the Infotainment system
— Tugs on the safety belt
— Activates the brakes
— The emergency flashers are activated
— Audi pre sense preemptive safety measures are
triggered > page 157
— The brakes are applied until the vehicle is sta-
tionary
As soon as the vehicle comes to a full stop, the
vehicle prepares for the vehicle passengers to be
rescued. The parking brake is set, “P” gear is en-
gaged, the doors are unlocked, and the interior
lighting is activated. The emergency call) will be
started if necessary once the vehicle has been
stationary
for several seconds.
Display
If /\ is displayed for example, the emergency
assist is active.
Overriding the emergency assist
You can override emergency assist as follows
>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 98.
Switching the emergency assist on and off
The system can be switched on and off in the
MMI & page 132.
Messages
rg or Ey 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 131 and try to turn the system 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.

A WARNING
— Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 129.
— The emergency assist is an assist system
that should only be used in cases of emer-
gency
to take over control of the vehicle and
bring it to a stop.


) This function is not available in every market and on all ve-
hicle equipment levels.
(i) Tips
— Depending on the severity of the detected
situation, not all safety measures will be ini-
tiated. Certain functions can be adjusted or
skipped if necessary.
— If the emergency assist was triggered, it will
only be available again after a brief period.
165

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Parking and maneuvering

Automatic deactivation
The distance indicator for the parking aid plus
will deactivate automatically when driving for-
ward faster than 6 mph (10 km/h).

ZA\ WARNING
Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 129.

@ Note
Keep enough distance from the curb to avoid
damage to the rims.
@ Tips
— 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 aid plus

Fig. 120 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 (@) 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 (8) 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. A continu-
ous tone sounds when an obstacle is less than
approximately 0.7 feet (0.20 m) away from the
sides of the vehicle. Do not continue driving for-
ward 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 aid 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: VE-
HICLE > Parking aid. Or
> Press|] in the upper display when the parking
system is active.


Possible settings:
Front volume - Volume for the front and side
area.
Rear volume - Volume for the rear area.
Entertainment fader - The volume of the audio/
video source is lowered when the parking aid is
activated.
The new level is demonstrated briefly* when the
volume is adjusted. >
167

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Parking and maneuvering

Rear cross-traffic assist
Applies to: vehicles with rear cross-traffic assist
3 s
&
= st a

Fig. 127 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. 126. A display in the MMI and
various warnings provide assistance when exiting
a parking space.
Requirements for using the rear cross-traffic
assist:
— The parking system is switched on > page 166.
— 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 display @ appears only when the
parking aid is active. In vehicles with peripheral
cameras, the display only appears in the Rear
and Rear corner camera views. Arrows show the
direction from which the cross traffic is ap-
proaching.
— 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
— Select |--| > Rear cross-traffic assist in the upper
display when the parking aid 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 system on 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-

— Observe the safety precautions and note the
limits of the assist systems, sensors, and
cameras > page 129.
— 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


173

Parking and maneuvering


your vehicle is pulled too far into the park-
ing space so that it is hidden by adjacent
vehicles.

iG) Tips
— 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 aid may not warn you of detected obsta-
cles under certain circumstances.
— The system is not available when the vehicle
detects that you are towing a trailer. There
is no guarantee the functions will be deacti-
vated when using a retrofitted trailer hitch.
Do not use these functions when towing a
trailer.
— The coverage areas of the sensors > fig. 126
are diagrams and do not represent a true-
to-scale image of the sensor ranges.
— The system complies with United States FCC
regulations and ISED regulations
> page 288.
174

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 56
blades
Headlights/ Deposits Soft sponge with a mild soap solution®
tail lights
Sensors/ Deposits Sensors: soft cloth with a solvent-free cleaning product
camera lenses Camera lenses: soft cloth with an alcohol-free cleaning sol-
ution
Snow/ice Hand brush/solvent-free de-icing spray >

262

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Fuses and bulbs


Fuse panel (2) (black) Fuse panel (4) (brown)

9 |Instrument cluster No. | Equipment

10 | Volume control Right front safety belt tensioner

11 | Light switch, switch panels Left front safety belt tensioner

12 | Steering column electronics Air suspension/suspension control

15 |Steering column adjustment Right headlight

16 | Steering wheel heating Left headlight


Fuse panel 2) (black)
Left rear door control module


No. | Equipment
WOl/@OIN|
A)
M|AILN
Right rear door control module


10 | Infotainment system


























1 |Front seat heating - -
> |Cimateconerl system 11 Exe Sealealite systems control module
3 |Left headlight electronics 12 | Diagnostic interface
4 |Panoramic glass roof Fuse panel (5) (black)
5 |Left front door control module No. | Equipment
6 | Sockets 1 Seat electronics, front seat ventilation,
8 | Instrument panel rearview mirror, diagnostic connection
9 | Right headlight electronics 2 Vehicle electrical system control module,
Windshield washer system/headlight diagnostic interface
10 washer system 3 | Exterior sound generator
12 | Parking lock 5 | Electric drive system
raven 6 | Traffic information antenna (TMC)
Fuse panel (8) (re
ueeiP eed) 7 |Active accelerator pedal
No. | Equi it
o. atipmen 8 | Night vision assist
1 |Anti-theft alarm system - - -
9 |Adaptive cruise assist
2 |Drive system control module , - . -
ll Driver assistance systems, intersection as-
3_| Emergency call module sistant control module
4 | Selector lever 15 |USB input
5 |Horn
6 | Parking brake Fuse assignment - luggage compa
7 High-voltage battery, battery monitoring
control module

8 | Roof electronics control module

10 | Airbag control module

11 | Left front lumbar support

12 | Diagnostic connection, light/rain sensor

14 | Right front door control module

15 | Climate control system compressor


16 | Climate control system blower

5 iF
| | eo ed oO
' rR mae Y= ae
aR EE


Fig. 177 Left side of the luggage compartment: fuse panel
with plastic clip
279
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