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Left front seat adjustment control unit, with memory location/task - GF91.29-P-2106T

MODELS 211.0/2/6 with CODE (275a) Memory package (driver's seat, steering column, mirrors) 

Fig 1: Locating Left Front Seat Adjustment Control Unit With Memory
G07266033Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Left front seat adjustment control unit, with memory, location The driver-side front seat adjustment control unit with memory (N32/1) is located in the seat frame of the left front seat (1).  
Left front seat adjustment control unit, with memory, purpose   GF91.29-P-2106-02T