Remove/install backrest motor for front seat - AR91.29-P-1431V

MODELS 171.4 with CODE (275a) Memory package (driver's seat, steering column, mirrors) with CODE (242b) Electrically adjustable front passenger seat with memory 

Fig 1: Identifying Backrest Motor For Front Seat Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Remove the backrest frame (1) without backrest adjuster (6) from the left or right front seat		AR91.10-P-3331VA
2	Remove the seat cushion from the left or right front seat	On front seats without code (873) heated seats, left and right front seats	AR91.10-P-3310V
		On front seats with code (873) heated seats, left and right front seats	AR91.10-P-3310VA
3	Remove tie strap (3) and disconnect the electrical connector (4)	Installation:  replace tie straps (3).
4	Remove the screws (5) at the backrest adjuster (6) on both left and right sides		*BA91.10-P-1019-01A
5	Remove the backrest adjuster (6) with left front backrest angle motor (M27/5) or with right front backrest angle motor (M28/5) from the seat cushion frame
6	Install in the reverse order