Front seat adjustment motor, component description - GF91.29-P-5214SX

MODEL 216.3, 221.0 /1 up to Model Year 8 

Shown on left front seat, model 221 

Fig 1: Locating Front Seat Adjustment Motors

Courtesy of MERCEDES-BENZ USA

Location 

The motors are mounted in each seat at the bottom in the seat frame and in the backrest.

Task 

Realization of the following adjustments:

• Head restraint adjustment
• Backrest adjustment
• Seat height adjustment
• Seat fore/aft adjustment
• Seat cushion forward/back adjustment
• Seat cushion inclination adjustment

Function 

The motors are actuated by the left front seat control unit (N32/1) or right front seat control unit (N32/2).

A Hall sensor is located on each motor for position recognition.