GF91.60-P-4053GZ Driver/Passenger-Side Neck-Pro Head Restraints

GF91.60-P-4053GZ Driver/passenger-side NECK-PRO head restraints
- 164, 251 up to Model Year 8

Component Identification:

The solenoids are integrated in the head restraints.

Function diagram for NECK-PRO head restraint

Component Identification:

Tasks
The solenoid of the driver NECK-PRO head restraint and of the front passenger NECK-PRO head restraint activates a mechanism in the head restraint in the event of a rear end collision. The head restraint impact cushion then moves forward by approx. 40 mm and upward by approx. 30 mm thus reducing the distance between the head and the head restraint during the accident.

Function
The sensor electronics of the restraint systems control unit (N2/7) senses the vehicle acceleration and, if required, switches the solenoid in the head restraints on after a delay period of approx. 20 ms.

This releases a mechanic locking mechanism which activates the NECK-PRO function in the head restraints through spring force.

The cable of the restraint systems control unit that is used to activate the head restraint is routed through the head restraint bracket. Therefore, the head restraint can no longer be removed by the customer.

Triggered head restraints can be recognized by the fact that they are moved forward and cannot be adjusted.They can be reset with the available vehicle tool kit.