Head Restraint System: Service and Repair

Active head restraints

If the luxury active head restraints (front seats) 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.

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

WARNING
For reasons of safety, have the active head restraints/NECK-PRO luxury 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.

Head restraints (standard)






1 Fold back
2 Push down
3 Push back

- Push the head restraint cushion by the bottom, back as far as it will go 1.
- Push the head restraint cushion down into the guide as far as it will go 2.
- Fold the head restraint cushion by the top, back firmly until it engages 3.
- Repeat this procedure on the active head restraints for second head restraint.

Luxury head restraints





- Take reset tool 1 out of the vehicle literature pouch.
- Guide reset tool 1 into center of head restraint between head restraint cushion and rear head restraint cover.

Note: Be careful not to damage upholstery

- Press reset tool 1 forward in direction of arrow.
- Press reset tool downward until you hear the head restraint release mechanism audibly engage.
- Pull out reset tool 1.
- Firmly press head restraint cushion backward towards the rear of the vehicle until it engages.
- Repeat this procedure on the active head restraints for second head restraint.