BMW 3: Rear collision preparation
Concept
The system reacts to vehicles approaching from behind.
General information
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Two radar sensors in the rear bumper monitor the area behind the vehicle.
When a vehicle approaches from the rear at a certain speed, the system responds as follows:
- Active Protection: when a collision 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 appropriate.
Warning Indicators and warnings cannot serve as a substitute 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
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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.
The system is deactivated in the following situations:
- When driving in reverse.
System limits
The system may not be fully functional in the following 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 the field of view of the sensors is covered, e.g., by garage walls, hedges or snow hills.
- If cargo protrudes.
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Emergency Stop Assistant
Concept
If the driver is no longer fit to drive, the system
helps to safely bring the vehicle to a standstill.
General information
The emergency stop function is not triggered
automatically. The emerg
BMW Drive Recorder
General information
The system stores brief video recordings of the
surrounding area of the vehicle, e.g., to document
traffic events.
Additionally, the following parameters are stored
for the trip:
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
fun
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Operating strategy
The following graphic shows the positions of the rotary valve as the coolant
temperature increases:
Switching diagram heat management module
0% - Rotary valve closed
100% - Rotary valve open
Cold start
Warm-up phase
Operating temperature
Transition from normal operation to maximum cooling req
Steptronic transmission
Engaging selector lever position D,
N, R
Drive mode D.
Neutral N.
R is reverse.
With the driver's safety belt fastened, briefly push
the selector lever in the desired direction, past a
resistance point, if needed. The selector lever returns
to the center position in each case.
To prevent the
