BMW 4 Coupe Series Manual page 203

Rear-end collision
preparation
Principle
Depending on the equipment and national-mar‐
ket version, the rear-end collision preparation can
react to vehicles approaching from behind.
General information
Radar sensors monitor the area behind the vehi‐
cle.
When a vehicle approaches from the rear at a
certain speed, the system can react as as fol‐
lows:
▷ Where applicable, the hazard warning flashers
will be switched on.
▷ Where applicable, the PreCrash functions are
triggered.
Safety information
Warning
The system cannot serve as a substitute for the
driver's personal judgment in assessing visibility
and traffic situation. There is a risk of accident.
Adjust driving style to traffic conditions. Watch
traffic closely and actively intervene where ap‐
propriate.
Online Edition for Part no. 01405A392C9 - VI/21
Safety
Warning
Indicators and warnings cannot serve as a sub‐
stitute for the driver's personal judgment. Due
to its limits, the system may not issue warnings
or reactions, or these may be issued late or in a
manner that is not consistent with their normal
use. There is a risk of accident. Adjust driving
style to traffic conditions. Watch traffic closely
and actively intervene where appropriate.
Overview
Sensors
The system is controlled by the following sen‐
sors:
▷ Radar sensors, side, rear.
Additional information:
Sensors of the vehicle, refer to page 37.
Switching on/off
The system is automatically active when the ve‐
hicle is turned on.
The system is deactivated in the following situa‐
tions:
▷ When driving in reverse.
System limits
System limits of the sensors
Additional information:
▷ Radar sensors, refer to page 38.
Functional limitations
The system may not be fully functional in the fol‐
lowing situations:
▷ When a vehicle is approaching at a speed
much faster than your own.
▷ The approaching vehicle is approaching
slowly.
CONTROLS
203