2008 Mercedes C-Class Owner's Manual - Page 51

Safety and Security Occupant safety 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. Warning! 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" ( page 427). You cannot remove the active head restraint on the driver's and front passenger's seats. For removal contact an authorized Mercedes-Benz Center. Warning! Warning! G For your protection, drive only with properly positioned head restraints. Adjust 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. G For information on head restraint adjustment, see "Adjusting rear head restraints" ( page 89). Do not attach any objects (e.g. hangers) to the head restraint posts. Otherwise, the active head restraints may not function properly or offer the degree of protection they were designed for in the event of an accident. G 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. Contact an authorized Mercedes-Benz Center for availability. 50