Head Restraint System: Service and Repair

Resetting triggered active head restraints

If the active head restraints have been triggered in an accident, reset the NECK-PRO active head restraints on the driver's and front-passenger seats. Otherwise, the additional protection will not be available in the event of another rear-end collision. Active head restraints that have been triggered are moved forwards and can no longer 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 active 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.

Resetting the active head restraints requires a lot of strength. If you have difficulty resetting the active head restraints, have this work carried out at a qualified specialist workshop, e.g. an authorized Mercedes-Benz Center.






- Take reset tool 1 out of the Mercedes-Benz literature pouch.
- Guide reset tool 1 into rectangular opening 3 between head restraint cushion 2 and head restraint cover.
- Press reset tool 1 downward in direction of arrow until you hear the head restraint release mechanism audibly engage.
- Pull out reset tool 1.
- Firmly press the head restraint cushion 2 backward towards the head restraint cover in direction of arrow until it engages.
- Repeat this procedure for the second front seat.
- After resetting the active front head restraints store reset tool 1 in the Mercedes-Benz literature pouch.