PRE-SAFE® (anticipatory occupant protection system)

WARNING

The PRE-SAFE® system reduces the impact of an accident on vehicle occupants, as long as their seat belts have been fastened correctly.

Although your vehicle is equipped with a PRESAFE ® system, the possibility of injury in the event of an accident cannot be ruled out. You should therefore always drive carefully and adapt your driving style to the prevailing road, weather and traffic conditions.

WARNING

Make sure that nobody can become trapped as you adjust the seat.

Make sure that there are no objects in the footwell or behind the seats when resetting the seats. There is a risk that the seats and/or the objects could be damaged.

PRE-SAFE® takes preemptive measures to protect occupants in certain hazardous situations.

PRE-SAFE® intervenes:
• if BAS intervenes, e.g. in emergency braking situations
• if BAS PLUS intervenes powerfully — on vehicles with DISTRONIC PLUS • if, on vehicles with DISTRONIC PLUS, the radar sensor system detects an imminent danger of collision in certain situations • in critical driving situations, e.g. when physical limits are exceeded and the vehicle understeers or oversteers severely

PRE-SAFE® takes the following measures depending on the hazardous situation detected:
• the front seat belts are pre-tensioned.

• vehicles with the memory function: the front-passenger seat is adjusted if it is in an unfavorable position.

• vehicles with a multicontour seat: the air pressure in the side bolsters of the seat backrest is increased.

• if the vehicle skids, the sliding sunroof/ panorama roof with power tilt/sliding panel and the side windows are closed so that only a small gap remains.

If the hazardous situation passes without resulting in an accident, PRE-SAFE® slackens the belt pretensioning. In vehicles with multicontour seats, the air pressure in the side bolsters is reduced again. All settings made by PRE-SAFE® can then be reversed.

If the seat belts are not released: ■ Move the backrest or seat back slightly, but only when the vehicle is stationary.

The belt pretensioning is reduced and the locking mechanism is released.

More information about seat belt adjustment, a convenience function integrated into PRESAFE ®, can be found in the "Seat belt adjustment" section  .