2009 Mercedes S-Class Owner's Manual - Page 62

Safety and security Occupant safety If the closing procedure of the door windows or tilt/sliding sunroof is blocked, the door windows or tilt/sliding sunroof will stop and open slightly. Once the hazardous situation is over without an accident occurring, the seat belt pretensioning is deactivated. You can readjust all of the settings made by PRE-SAFE®. If the seat belts do not release: X 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 seat 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. You cannot remove the active head restraint on the driver's and front passenger's seats. Adjust the seat backrest or seat slightly to the rear until the seat belt tension is diminished. The locking mechanism releases. ! When moving the seats, make sure there are no items in the footwell or behind the seats. Otherwise, you could damage the seats. 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 rear-end collision. For information on resetting the activated active head restraints, see "Resetting activated head restraints" (Y page 345). 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 deployment of the front side impact air bags. Contact an authorized Mercedes-Benz Center for availability. G Warning! For your protection, drive only with properly positioned head restraints. Adjust the head restraint so that it is as close to the head as possible and the center of the head restraint supports the back of the head at eye level. This will reduce the potential for injury to the head and neck in the event of an accident or similar situation. For information on head restraint adjustment, see "Head restraints" (Y page 97). 60