PRE-SAFE® (preventative occupant protection)

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.

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

PRE-SAFE® intervenes:

- in emergency braking situations, e.g. if BAS is activated or, in vehicles with DISTRONIC PLUS, BAS PLUS intervenes powerfully
- if the radar sensor system detects an imminent danger of collision in certain situations (on vehicles with DISTRONIC PLUS)
- in critical driving situations, e.g. when physical limits are exceed 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.
- it adjusts the front-passenger seat if it is in an unfavorable position.
- the air pressure in the side bolsters of the seat cushion and seat backrest of the front active multicontour seats 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. The air pressure in the side bolsters on the active multicontour seat

is reduced again. All settings made by PRESAFE ® 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.

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.

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

    See also:

    MB Info call button
    •► Press and hold MB Info call button 1 for more than two seconds. This initiates a call to the Mercedes-Benz Customer Assistance Center. The indicator lamp in MB Info call button 1 fla ...

    Braking
    If ABS intervenes when braking, you will feel a pulsing in the brake pedal. •► If ABS intervenes: continue to depress the brake pedal with force until the braking situation is over. • ...

    Useful information
    This Operator's Manual describes all models and all standard and optional equipment of your vehicle available at the time of publication of the Operator's Manual. Country-specific differences ...