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Seat ventilation blower regulator, location/task/design/function - GF91.30-P-3102T

MODELS 211.0/2/6 with CODE (401a) Front luxury seat, incl. heated seat and seat ventilation 

Illustrated on the right front seat 

Fig 1: Locating Front Seat Ventilation Blower Regulators
G07266045Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Seat ventilation blower regulator, location The left front seat ventilation blower regulator (N29/5) and right front seat ventilation blower regulator (N29/6) are mounted into the backrest of the driver and front passenger seat.
Seat ventilation blower regulator, purpose The left front seat ventilation blower regulator (N29/5) and right front seat ventilation blower regulator (N29/6) control the speed of the ventilation motors depending on the control voltage of the HS [SIH] and seat ventilation control unit (N25/7).
Seat ventilation blower regulator, design The left front seat ventilation blower regulator (N29/5) and right front seat ventilation blower regulator (N29/6) consist of an electronic circuit in a plastic housing with eight terminals.
Seat ventilation blower regulator, function The integrated electronic circuit in the left front seat ventilation blower regulator (N29/5) and right seat ventilation blower regulator (N29/6) can be used to regulate the voltage supply of the seat ventilation motors, in accordance with the actuation voltage of the HS [SIH] and seat ventilation control unit (N25/7).