Head Restraint System: Service and Repair

Resetting activated head restraints

If the active head restraint have been triggered in an accident, the head restraints must be reset. Otherwise, active head restraint cannot offer any additional protection in the event of another rear-end collision.

You can tell that the head restraints have been activated when they have been moved forward and cannot be adjusted.

Note: For your convenience, we recommend that you have this work carried out by an authorized Mercedes-Benz Center. You will find the reset tool for manually operating the head restraints in the Mercedes-Benz vehicle literature pouch.

Warning!
For safety reasons, have the active head restraints checked by an authorized Mercedes-Benz Center after a rear-end collision

Warning!
When pushing back the head restraint cushion, take care that your fingers do not become caught between the head restraint cushion and the cover. Failing to do so may lead to injury.

ALLDATA Editor Note: The depictions below may not match your particular vehicle, however the essential information is correct.






- Take the reset tool out of the Mercedes-Benz vehicle literature pouch.
- Guide reset tool into center of head restraint between head restraint cushion and rear head restraint cover.

Important! Be careful not to damage upholstery.

- Press reset tool forward in direction of arrow.

- Press reset tool downward until you hear the head restraint release mechanism audibly engage.
- Pull out reset tool.
- Firmly press head restraint cushion backward towards rear head restraint cover until it engages.

- Repeat this procedure for second head restraint.