Interior - Grind Noise In Backrest (Multicontour Seat)

NOISE FROM ACTIVE MULTICONTOUR BACKREST WITH SEAT VENTILATION SWITCHED ON

Topic number LI91.30-P-048290

Version 1

Design group 91.30 Seat heater, seat ventilation

Date 11-10-2009

Validity Model series 221 as of model refinement package with seat ventilation (401) and DS (432) up to production date 22.09.2009

Reason for change

Reason for block

Complaint:

Grinding noises can occur in the backrest on active multicontour seats with the backrest under load and the seat ventilation switched on.

Cause:

When a person sits on the seat, the yellow pneumatic line can slip over the bracket of the control unit for the active multicontour seat and then scrape against the fan of the backrest.

Remedy:

Attach a cable tie to the bracket of the multicontour backrest and fix the three pneumatic lines (yellow, red, clear) in place as shown in the illustration in the attachment (Pic_1).





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Attachment - Positioning of cable tie