2009 Mercedes CLS-Class Owner's Manual - Page 59

Safety and security Occupant safety PRE-SAFE® takes action in: REmergency braking situations, e.g. if the Brake Assist System (BAS) (Y page 66) is activated. dynamic driving situations, e.g. when the vehicle is understeering or oversteering because it has exceeded its physical limitations or in case of evasive steering maneuvers at speeds above approximately 85 mph (140 km/h). RCritical Once the hazardous situation is over without an accident occurring, the seat belt pre-tensioning is deactivated. You can readjust all of the settings made by PRE-SAFE®. If the seat belts do not release: X Adjust the seat backrest or seat slightly to the rear until the seat belt tension is diminished. The locking mechanism releases. G Warning! Do not attach any objects (e.g. hangers) to the head restraint posts. Otherwise, the active head restraints may not be able to function properly or offer the intended degree of protection they were designed for in the event of a rear-end collision. If the active head restraints have been triggered in an accident, the active head restraints must be reset. Otherwise, the active head restraints cannot offer any additional protection in the event of another rearend collision. For information on resetting the activated active head restraints, see "Resetting activated head restraints" (Y page 305). You cannot remove the active head restraint on the driver's and front passenger's seats. For removal contact an authorized MercedesBenz Center. When you are driving faster than 20 mph (30 km/h), PRE-SAFE® takes the following measures in such situations: RThe front seat belts are pre-tensioned automatically. RIf ! When moving the seats, make sure there are no items in the footwell or behind the seats. Otherwise, you could damage the seats. Active head restraints The active head restraints are intended to offer the driver and front passenger increased protection from whiplash-type injuries. In the event of a rear-end collision, the active head restraints on the driver's and front passenger's seats are designed to move forward in the direction of travel, providing the head with increased support earlier on in the collision sequence. The active head restraints move forward whether the seat is occupied or not. the passenger seat is in an unfavorable position, it will be adjusted to a better position. situation, the door windows and the tilt/ sliding sunroof also close until only a small gap remains. If the closing procedure of the tilt/sliding sunroof or door windows is blocked, the tilt/sliding sunroof or door windows will stop and open slightly. RIf the vehicle is in a critical dynamic driving G Warning! Only use seat or head restraint covers which have been tested and approved by Mercedes-Benz for your vehicle model. Using other seat or head restraint covers may interfere with or prevent the activation of the active head restraints and/or the Z 57