Operation CHARM: Car repair manuals for everyone.

Interior - Front Seat Noises When Adj. Lumbar Support

Noises during lumbar support adjustment

Topic number LI91.10-P-048505

Version 1

Design group 91.10 Front seats

Date 03-24-2010

Validity Model series 164/251 for all vehicles with manually adjustable lumbar support

Reason for change WIS reference

Reason for block

Complaint:

Noises can occur when the manually adjustable lumbar support is adjusted.

Cause:

The Bowden cable of the manually adjustable lumbar support can rub against the spring core of the backrest.

Remedy:

1. Remove seat-back lining (164: AR 91.10.-P-1915 GZ/251: AR 91.10-P-1915RT)

2. Manually adjust the lumbar support with a load on the seat and determine the friction points.

Note:
There must be a person seated on the affected seat when determining the friction points so that there is adequate pressure on the backrest. The attached picture shows the routing of the Bowden cable for the manually adjustable lumbar support and potential points of friction with the spring core of the backrest.

3. Glue felt onto the friction point on the spring core of the backrest.





Attachments





Symptoms





Parts





Work units





WIS-References





Validity





Attachment - Routing of Bowden cable for manually adjusted lumbar support in backrest. The red arrows show potential points of friction between the Bowden cable and the spring core of the backrest.