User Manual - Page 187

For 2019 BMW X4.

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Up to 10 seconds after the start of the engine
via the Start/Stop button.
During calibration of the camera immediately
after vehicle delivery.
Attaching any objects such as stickers or film in
the beam area of the radar sensors will also im‐
pact the function of the radar sensors and may
even cause them to fail.
A Check Control message is displayed when the
system is not fully functional.
Rear collision preparation
Concept
The system reacts to vehicles approaching from
behind.
General information
Two radar sensors in the rear bumper monitor
the area behind the vehicle.
If a vehicle approaches from the rear at a certain
speed, the system responds as follows:
Active Protection, refer to page 188: if a colli‐
sion seems to be unavoidable, 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.
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
Radar sensors
The radar sensors are located in the rear
bumper.
Always keep the bumper in the area of the radar
sensors clean and unobstructed.
Switching on/off
The system is automatically active after every
driving off.
Seite 187
Safety
CONTROLS
187
Online Edition for Part no. 01402720839 - II/19
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