Multicontour Seat Pneumatic Components Overview

Multicontour Seat Pneumatic Components Overview

• Repair instructions and test methods for pneumatic components. Refer to => [ Repair Instructions and Test Methods for Pneumatic Components ] Repair Instructions and Test Methods For Pneumatic Components.






1 Seat bolster inflation adjustment

• Assembly Overview, refer to => [ Seat and Backrest Bolster Adjuster Assembly Overview ] Seat and Backrest Bolster Adjuster Assembly Overview

• Removing and Installing, refer to => [ Seat Bolster Adjuster ] Seat Bolster Adjuster

2 Driver seat multicontour seat compressor (V439)

• Front passenger side: front passenger multicontour seat compressor (V440)

• Assembly Overview, refer to => [ Multi-Contour Seat Compressor Assembly Overview ] Multi-Contour Seat Compressor Assembly Overview

• Removing and Installing, refer to => [ Multi-Contour Seat Compressors V439/V440 ] Multi-Contour Seat Compressors V439/V440

3 Backrest bolster inflation adjuster

• Assembly Overview, refer to => [ Seat and Backrest Bolster Adjuster Assembly Overview ] Seat and Backrest Bolster Adjuster Assembly Overview

• Removing and Installing, refer to => [ Backrest Bolster Adjuster ] Backrest Bolster Adjuster

4 Check valve

• Depending on the version, separate component or integrated in the multi-contour seat control module

• Remove the external check valve if installing a multicontour seat control module that contains a check valve. Refer to the => Parts Catalog

5 Massage mat

• integrated in the backrest cushion; if defective replace backrest cushion => [ Backrest Cover and Backrest Cushion for Multi-contour Seat, Separating and Connecting ] Backrest Cover and Backrest Cushion For Multi-Contour Seat, Separating and Connecting

• Assembly Overview, refer to => [ Backrest Cushion with Massage Mat Assembly Overview ] Backrest Cushion With Massage Mat Assembly Overview

• Removing and Installing, refer to => [ Backrest Cover and Backrest Cushion for Multi-contour Seat, Separating and Connecting ] Backrest Cover and Backrest Cushion For Multi-Contour Seat, Separating and Connecting

6 Driver side multicontour seat control module (J873)

• Front passenger side: right front multicontour seat control module (J872)

• The connection for the restrictor is deleted on the Original Replacement Part with an integrated check valve and the separate check value must be removed. Refer to the Parts Catalog.

• Assembly Overview, refer to => [ Front Multicontour Seat Control Module, Lumbar Support air Cushion Module Carrier and Backrest Fan Assembly Overview ] Front Multicontour Seat Control Module, Lumbar Support Air Cushion Module Carrier and Backrest Fan Assembly Overview

• Removing and Installing, refer to => [ Multi-Contour Seat Control Modules J873/J872 ] Multi-Contour Seat Control Modules J873/J872

7 Valve block 1 in the driver seat (N475)

• for massage mat

• Front passenger side: valve block 1 in front passenger seat (N477)

• Assembly Overview, refer to => [ Backrest Cushion with Massage Mat Assembly Overview ] Backrest Cushion With Massage Mat Assembly Overview

• Removing and Installing, refer to => [ Valve Blocks N475/N476/N477/N478 for Massage Mat ] Valve Blocks N475/N476/N477/N478 For Massage Mat

8 Pulsation damper

9 Module carrier with air cushions for lumbar support

• Cannot be disassembled

• Assembly Overview, refer to => [ Front Multicontour Seat Control Module, Lumbar Support air Cushion Module Carrier and Backrest Fan Assembly Overview ] Front Multicontour Seat Control Module, Lumbar Support Air Cushion Module Carrier and Backrest Fan Assembly Overview

• Removing and Installing, refer to => [ Module Carrier with Air Cushions for Lumbar Support ] Module Carrier With Air Cushions For Lumbar Support

10 Valve block 2 in the driver seat (N476)

• for massage mat

• Front passenger side: valve block 2 in front passenger seat (N478)

• Assembly Overview, refer to => [ Backrest Cushion with Massage Mat Assembly Overview ] Backrest Cushion With Massage Mat Assembly Overview

• Removing and Installing, refer to => [ Valve Blocks N475/N476/N477/N478 for Massage Mat ] Valve Blocks N475/N476/N477/N478 For Massage Mat