BMW GRAN COUPE 4 Series Owner's Manual page 134

Controls
E.g., the following situations may not be de‐
tected:
▷ Slow moving vehicles when you approach
them at high speed.
▷ Vehicles that suddenly swerve in front of
you, or sharply decelerating vehicles.
▷ Vehicles with an unusual rear appearance.
▷ Two-wheeled vehicles ahead of you.
Functional limitations
The system may not be fully functional in the
following situations:
▷ In heavy fog, rain, sprayed water or snow‐
fall.
▷ In tight curves.
▷ If the driving stability control systems are
limited or deactivated, for instance DSC
OFF.
▷ If, depending on the vehicle equipment
version, the field of view of the camera in
the mirror or the radar sensor is dirty or ob‐
scured.
▷ Up to 10 seconds after the start of the en‐
gine via the Start/Stop button.
▷ During calibration of the camera immedi‐
ately after vehicle delivery.
▷ If there are constant blinding effects be‐
cause of oncoming light, for instance from
the sun low in the sky.
Warning sensitivity
The more sensitive the warning settings are,
such as the warning time, the more warnings
are displayed. However, there may also be an
excess of false warnings.
134
Safety
Online Edition for Part no. 01402978272 - II/17
Collision warning with
braking function
Concept
The system can help prevent accidents. If an
accident cannot be prevented, the system will
help reduce the collision speed.
The system sounds a warning before an immi‐
nent collision and actuates brakes independ‐
ently, if needed.
The automatic braking intervention is executed
with limited braking force and for a brief period
only.
If the vehicle is equipped with Active Cruise
Control with Stop&Go, the approach control
warning is controlled via the cruise control ra‐
dar sensor.
The approach control warning is available even
if cruise control has been deactivated.
With the vehicle approaching another vehicle
intentionally, the approach control warning and
braking are delayed in order to avoid false sys‐
tem reactions.
General information
The system issues a two-phase warning of a
possible danger of collision with vehicles at
speeds above approx. 3 mph/5 km/h. Time of
warnings may vary with the current driving sit‐
uation.
Detection range
Objects that the system can detect are taken
into account.