BMW X3 2018 Owner's Manual page 189

System limits
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.
▷ When the approaching vehicle approaches
slowly.
▷ In heavy fog, wet conditions, or snowfall.
▷ In tight curves or on narrow lanes.
▷ If the bumper is dirty, iced up, or covered,
for instance by stickers.
▷ If cargo protrudes.
Brake force display
Concept
Additional brake lights indicate emergency brak‐
ing to the traffic behind. This can reduce the risk
of a rear-end collision.
General information
▷ During normal brake application, the outer
brake lights light up.
▷ During heavy brake application, the inner
brake lights additionally light up.
Online Edition for Part no. 01402989843 - II/18
Safety
Active Protection
Concept
Active Protection prepares occupants and the
vehicle for a possible accident in critical driving or
collision situations.
General information
Active Protection consists of various PreCrash
functions, which can vary depending on the
equipment.
The system is used to detect certain critical driv‐
ing situations that might lead to an accident. This
includes the following critical driving situations:
▷ Emergency stop.
▷ Severe understeering.
▷ Severe oversteering.
Certain functions of several systems can - within
the system limits - lead to Active Protection trig‐
gering:
▷ Approach control warning with braking func‐
tion: automatic brake intervention.
▷ Approach control warning with braking func‐
tion: brake booster.
▷ Rear collision prevention: detection of immi‐
nent rear collisions.
Safety information
WARNING
The system cannot serve as a substitute for the
driver's personal judgment. Due to the system
limits, critical situation could not be detected
reliably or in time. There is a risk of an accident.
Adjust driving style to traffic conditions. Watch
traffic closely and actively intervene where ap‐
propriate.
CONTROLS
189