Electric backrest and headrest
Installation details of electric motors for adjusting the backrest and headrest of the front seat
1 - Lid; 2 - Overlay; 3, 4 - Screws; 5 - Screwdriver; M27/4 - Left seat headrest adjustment drive motor; M28/4 - Right seat headrest adjustment drive motor; M27/5 - Left seat backrest adjustment drive motor; M27/6 - Right seat backrest adjustment drive motor
1. Remove the front seat assembly (see Chapter Body).
2. Remove the mounting screws and remove the rear seat back trim.
3. Remove the headrest.
4. Disconnect the electrical wiring from the headrest adjustment drive electric motor (M27/4 or M28/4).
5. Slide to the right and remove the electric motor through the bottom of the backrest (M27/4 or M28/4).
Material based on data from the portal [www.mercedesman.ru]
6. Unscrew the fastening screws (3) and remove the decorative trim (2).
7. On the right side, detach the backrest cover (1).
8. Unscrew the screws (4) located on the right and remove the electric motor for the backrest adjustment drive (M27/5 or M28/5) and disconnect the electrical wiring from it.
9. Installation is carried out in reverse order.
Electric airbag drive
Installation details of electric motors for the front seat cushion adjustment drive
1 - Overlay; 2, 3, 4 - Screws; M27/1 - Left seat cushion longitudinal adjustment drive motor; M28/1 - Motor for adjusting the cushion of the right seat in the longitudinal direction; M27/2 - Motor for adjusting the rear edge of the left seat cushion in the vertical direction; M28/2 - Motor for adjusting the rear edge of the right seat cushion in the vertical direction; M27/3 - Motor for adjusting the front edge of the left seat cushion in the vertical direction; M28/3 - Motor for adjusting the front edge of the right seat cushion in the vertical direction; N32/1 - Driver's seat adjustment control unit with memory (and steering column); N32/2 - Memory-equipped control unit for passenger seat adjustment
1. Remove the front seat assembly (see Chapter Body).
2. Remove the memory seat adjustment control unit (N32/1 or N32/2) and disconnect the electrical wiring from it, - prepare replacement strapping bandages.
3. Loosen the screws (2) and remove the drive motor (M27/1 or M28/1).
4. Remove the cover (1), unscrew the screws (3) and remove the electric motor (M27/2 or M28/2).
5. To remove the motors (M27/3 or M28/3) remove the screws (4).
6. Installation is carried out in reverse order.