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Adjust front passenger seat, function - GF91.29-P-2015SX

MODEL 221.0 /1 with CODE (275) Memory package (driver seat, steering column, mirrors) with CODE (223) Rear bench seat with electrically adjustable outer seats with PRE-SAFE positioning function for outer seats and outer head restraints up to Model Year 8 

Shown on vehicle up to 31.5.07 

Fig 1: Adjust Front Passenger Seat Function Diagram
G07601702Courtesy of MERCEDES-BENZ USA

Function requirements 

Driver-side control point 

By actuating the seat adjustment selection switch in the left front seat operation switch group, the adjustment request is read in over the front door LIN by the left front door control unit and sent over the Interior CAN to the right front seat control unit. After actuating the seat adjustment selection switch, the front passenger seat adjustment is active for 10 s and this is indicated by the light emitting diode (LED) in the seat adjustment selection switch.

The following adjustment functions are possible:

Rear control point (with code (223) Rear bench seat with electrically adjustable outer seats, lumbar support and pneumatically raisable head restraints) 

By actuating the seat adjustment selection switch in the right rear seat operation switch group, the adjustment request is read in over the rear door LIN by the right rear door control unit and sent over the Interior CAN to the right front seat control unit. After actuating the seat adjustment selection switch, the front passenger seat adjustment is activated for 10 s and this is indicated by an LED in the seat adjustment selection switch.

The following adjustment functions are possible:

IMPORTANT Adjustment requests from the right front door control unit have priority over requests from the left front door control unit or right rear door control unit.

  Front seat adjustment motor, component description M28/1, M28/4, M28/5, M28/8, M28/9 and M28/10 GF91.29-P-5214SX 
  Right front seat control unit, component description N32/2 GF91.29-P-5240SX 
  Driver-side front door control unit, component description N69/1 GF72.29-P-6000SX
  Rear door control unit, component description N69/4 GF72.29-P-6020SX
  Electronic ignition/starter switch control unit (EIS), component description N73 GF80.57-P-6000SX
  Front seat adjustment switch group, component description S22 GF91.29-P-5220SX 
  Rear seat adjustment switch group, component description S55/2
For vehicles with code (223) Rear bench seat with electrically adjustable outer seats, lumbar support and pneumatically raisable head restraints
GF91.29-P-5216SXA