Operation CHARM: Car repair manuals for everyone.

Check Valve







Check Valve

The external check valve - 3 - is discontinued as of June 2010. Since then it is located inside the control modules for the multicontour seat. To find out if the control module has the check valve or not, refer to the Parts Catalog.






Remove the separate check valve if installing a multicontour seat control module that contains an integrated check valve. Refer to the => electronic parts catalog.

Removing






- Multi-contour seat: Remove the backrest cover. Refer to => [ Backrest Cover ] Backrest Cover.

- Individual power rear seat: Remove the rear seat backrest. Refer to => [ Lower Seat Frame/Rear Seat Backrest ] Lower Seat Frame/Rear Seat Backrest.

- Press circlip - 2 - in - direction of arrow A - and simultaneously remove pneumatic line - 1 - - arrow B -.

- Repeat the procedure with circlip - 4 - and pneumatic line - 5 -.

- Remove check valve - 3 -.

Installing

Install in reverse order of removal. Note the following:

Installation note: For example tightening specifications, replace components. 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.