Head Restraint System: Service and Repair

Resetting activated head restraints

If the active head restraints have been triggered in an rear-emd collision, the active head restraints must be reset. Otherwise, the active head restraints cannot offer and additional protection in the event of another rear-end collision. You can tell that the active head restraints that have been activated when they have been are moved forwards and cannot be adjusted.

WARNING
For reasons of safety, have the active head restraints checked at an authorized Mercedes-Benz Center after a rear-end collision.

WARNING
When pushing back the head restraint cushion, make sure your fingers do not become caught between the head restraint cushion and the cover. Failure to observe this could result in injuries.

Note: Be careful not to damage upholstery.

- Take the reset tool out of the Mercedes-Benz vehicle literature pouch.






1 Reset tool
2 Active head restraint


- Guide reset tool 1 into rectangular opening of active head restraint 2.
- Press reset tool 1 downward in direction of arrow until you hear the head restraint release mechanism audibly disengage.
- Pull out reset tool 1.
- Firmly press the active head restraint cushion backward towards the head restraint cover in direction of arrow until it engages.
- Repeat this procedure on the active head restraint for the second front seat.
- After resetting the active head restraints store reset tool 1 in the Mercedes-Benz vehicle literature pouch.