Remove/Install Front Seat Height Adjustment Drive Motor - AR91.29-P-1427XG

Model 463 

as of model year 2019 

Fig 1: Front Seat Height Adjustment Drive Motor Components Location - Model 463 As Of Model Year 2019

Courtesy of MERCEDES-BENZ USA

Courtesy of MERCEDES-BENZ USA

	Risk of injury.  Moving parts can pinch, crush or, in extreme cases even sever extremities.	No parts of the body or limbs should be within the operating area of mechanical components when moving components.	AS00.00-Z-0009-01A
	Notes on self-locking nuts and bolts		AH00.00-N-0001-01A
	Remove/install
1	Remove front seat and lay it on its side.	To allow the driver seat height adjustment seat adjustment motor (M27/10) or the front passenger seat height adjustment seat adjustment motor (M28/10) to be removed, the front seat must not be standing upright.	AR91.10-P-1000XG
2	Disconnect electrical connector (5).
3	Remove retaining ring (1).	Check the retaining ring (1) and replace if necessary.
4	Remove the screw (3).	Note left-hand thread of screw/bolt (3). Bolt (3) is shorter than the bolts (2). Bolt, electric motor for seat height adjustment to seat adjustment unit	*BA91.29-P-1005-01B
5	Unscrew bolts (2).	Replace the screws (2). Bolt, electric motor for seat height adjustment to seat adjustment unit	*BA91.29-P-1005-01B
6	Remove driver seat height adjustment seat adjustment motor (M27/10) or front passenger seat height adjustment seat adjustment motor (M28/10).
7	Install in reverse order.

SEAT ADJUSTMENT

Number	Designation			Model 463 up to model year 2019	Model 463 as of model year 2019
BA91.29-P-1005-01B	Bolt, electric motor for seat height adjustment to seat adjustment unit	Short bolts	Nm	-	4
		Long bolt	Nm	-	6