Remove/install front seat (seat backrest) adjusting motors

AR91.29-P-1430M

Remove/install front seat (seat backrest) adjusting motors

19.1.98

 

Remove/Install

1

Remove front seat

up to 31.8.02.

AR91.10-P-1000M

as of 1.9.02.

AR91.10-P-1000MB

2

Remove seat-back lining from seat backrest

AR91.10-P-1910E

3.1

Remove head restraint up/down motor (M27m4/M28m4)

 Only when replacing.

First press head restraint up/down motor (M27m4/M28m4) to right side and then remove downward.

4

Expose upholstery (1) around backrest forward/back motor (M27m5, M28m5) (see arrow)

5

Remove side paneling (9) from seat belt buckle (7)

 Screws (8, arrow) and retaining clip (see detail).

6

Disconnect head restraint wiring harness (2) from head restraint up/down motor (M27m4, M28m4)

 Head restraint wiring harness (2) and wiring harness (10) are connected together with the backrest forward/back motor (M27m5, M28m5).

7

Expose head restraint wiring harness (2) at right side of backrest frame

8

Expose wiring harness (1) of left (N32/1), right (N32/2) front seat adjustment control module with memory as far as backrest forward/back motor (M27m5, M28m5)

 Installation:Fix wiring harness (10) to existing cables using tie straps.

9

Unscrew screw (3) from right backrest frame and pull backrest forward/back motor (M27m5, M28m5) out towards rear

Internal torx set

*000589011000

 Bolt, backrest adjustment motor.

*BA91.29-P-1002-01A

10

Install in the reverse order

11

Check seat adjustment for proper function

Number

Designation

Model 220

BA91.29-P-1002-01A

Bolt, backrest adjustment motor

Nm

5