Interior - Venting Noises From Seat Back Rest

DTB

Date: September 26, 2008
Order No.: P-B-91.25/158a
Supersedes: P-B-91.25/158 dated May 19, 2008
Group: 91







SUBJECT: Model 216.371/376/377/379/386
Model 221.171/176/177/179/186
Equipped with Dynamic Seats (Code 432)
Venting Noises from Dynamic Seat Backrest

If you receive customer reports in the above model vehicles of venting noises from the seat backrest when the dynamic seat function is active, this may be caused by the filter element in the air outlet of the valve units in the dynamic seat system modules (Figure 1, arrow).






To resolve, perform the following.

1. Remove dynamic seat control unit as per WIS document AR91.25-P-1900SX.

2. Cut a piece of felt strip 120 mm in length. Attach or glue felt strip to the right side of the existing felt strips (Figure 2). Ensure there is an overlap of 5 mm (Figure 3).










3. Cut a piece of felt strip 95 mm in length. Attach or glue felt strip to the top of the existing felt strips. Ensure there is an overlap of 5 mm (Figure 4).







4. Cut a piece of felt strip 120 mm in length. Attach or glue felt strip to the left of the existing felt strips. Ensure the signal plugs for the valves are covered (Figure 5).







5. Reinstall dynamic seat control unit and seat back as per WIS document AR91.25-P-1900SX.

Parts Information







NOTE: The following allowable labor operations should be used when submitting a warranty claim for this repair. This information has been generated on September 26, 2008. Please refer to Netstar -> Star TekInfo -> Star Time for the most current labor time allowance.

In Case of Warranty

Operation: Multi-contour/dynamic seat control unit - specify location, R&R/replace (80-5025)
Cut and install felt tape (80-0000)