Audi A8 2019 Service Training page 94

Pre sense collision avoidance assist
Audi pre sense collision avoidance assist can aid the driver
with evasive maneuvers while approaching another vehicle.
In models equipped with Audi pre sense collision avoidance
assist, the following actions can be taken:
› Steering torque (corrective steering inputs).
› Braking of individual wheels.
› Display of corrective action by Audi pre sense in the
instrument cluster (visual and audible).
Driver Assistance
Systems Front Camera
R242
Right Adaptive Cruise Control
Sensor G259 and Control
Module for Adaptive Cruise
Control J428
Function
Collision avoidance assist is explained here using an
example in which one's own vehicle wants to pass by a
vehicle on the left. It works in the same manner when
passing by a vehicle on the right.
Right Adaptive Cruise Control Sensor G259, Control Module
for Adaptive Cruise Control J428 and Laser Distance Regula-
tion Control Module J1122 monitor the traffic in front of
one's own vehicle. The front camera for driver assistance
systems and the laser scanner of the laser distance control
function send the data they have acquired to Adaptive
Cruise Control Module J428.
J428 merges the data and can instruct other systems to
initiate actions appropriate to the situation. The merging of
data from various sources provides a map of the vehicle
periphery.
Reference
For further information about turning Audi pre sense on and off, refer to "Audi pre sense settings",
90
Installation location
To implement Audi pre sense collision avoidance assist, the
vehicle requires:
› Right Adaptive Cruise Control Sensor G259 and Control
Module for Adaptive Cruise Control J428.
› Driver Assistance Systems Front Camera R242.
› Laser Distance Regulation Control Module J1122.
Switching collision avoidance assist off and on
When Audi pre sense is off, collision avoidance assist is also
off. In addition, collision avoidance assist can be switched
off separately in the MMI menu. If collision avoidance
assist is switched off separately, it stays off until the func-
tion is reactivated in the MMI. Switching the ignition off
and on does not activate collision avoidance assist if it has
been switched off separately.
Laser Distance Regulation
Control Module
J1122
662_166
page 70.