Right front seat control unit, component description - GF91.29-P-5240SX

MODEL 221.0/1, 216.3 up to Model Year 08 

Location 

The right front seat control unit is located on the seat cushion frame of the front passenger seat (1).

Tasks 

The right front seat control unit has the following tasks:

• Actuation of the seat adjustment
• Actuation of seat belt comfort fit feature
• Control of lumbar support (without code (409) Left/right front multicontour seats and without code (432) Left and right dynamic multicontour seat)
• Control of heated seats HS [SIH] (on model 221 with code (873) Right and left front seat heaters or code (401) Front comfort seats, incl. seat heating and seat ventilation and on model 216)
• Control of seat ventilation (with code (401) Front comfort seats, incl. seat heating and seat ventilation)
• Control of front passenger seat memory function (on model 221 with code (275) Memory package (driver seat, steering column, mirrors) and on model 216)
• Actuation of footwell illumination in rear (on model 221)

Discrete outputs 

Voltage supply for the following components:

• Right rear footwell lamp (E17/17) (on model 221)
• Right front seat fore/aft adjustment motor (M28/1)
• Right front head restraint motor (M28/4)
• Right front backrest angle adjustment motor (M28/5)
• Right front seat cushion fore/aft motor (M28/8)
• Right front seat cushion inclination motor (M28/9)
• Right front seat height adjustment motor (M28/10)
• Right front seat belt comfort solenoid (K18/5)
• Right front seat belt lock relay (K18/3) (on model 216)
• Right front seat heated cushion (R13/3) (on model 221 with code (873) Right and left front seat heaters or code (401) Front comfort seats, incl. seat heating and seat ventilation and on model 216)
• Right front backrest heated cushion (R13/4) (on model 221 with code (873) Right and left front seat heaters or code (401) Front comfort seats, incl. seat heating and seat ventilation and on model 216)
• Right front seat cushion ventilation motor group (M18/11) (with code (401) Front comfort seats, incl. seat heating and seat ventilation)
• Right front seat backrest ventilation motor group (M18/12) (with code (401) Front comfort seats, incl. seat heating and seat ventilation)

Discrete inputs 

• Circuit 30
• Circuit 31
• Hall sensors of motors (M28/1, M28/4, M28/5, M28/8, M28/9, M28/10)
• Front passenger lumbar support regulator control unit (N32/24) (without code (409) Left/right front multicontour seats and without code (432) Left and right dynamic multicontour seat)
• Vehicle-sensitive seatbelt lock sensor (A60) (on model 216)
• Right front seat backrest angle microswitch (S92/1) (on model 216)

The right front seat control unit serves as a contact point for:

• Right front seat ventilation blower regulator (N29/6) (with code (401) Front comfort seats, incl. seat heating and seat ventilation)
• Front passenger lumbar support regulator control unit (N32/24) (without code (409) Left/right front multicontour seats and without code (432) Left and right dynamic multicontour seat)
• Right front multicontour backrest control unit (N32/16) (with code (432) Left and right dynamic multicontour seat)

CAN signals 

The right front seat control unit is an interior CAN participant.