S 550 (221.171) V8-5.5L (273.961) (2007)
Vacuum/Pressure Pump: Customer Interest
Interior - Seat Pump Is Too Noisy
Date: May 16, 2008
Order No.: P-B-91.25/159
Supersedes:
Group: 91
SUBJECT:
Model 221.171/176/177/179/186
Equipped with Dynamic Seat (Code 432) or Multi-Contour Seat (Code 406 / 409)
Dynamic / Multi Contour Seat Pump Noisy
If you receive customer reports in the above model vehicles of the dynamic / multi contour seat pump emitting too much noise (droning or
humming) from the trunk, this may be due to a hardware malfunction in the pump. To resolve, replace pump, as per WIS document
AR91.25-P-1580SX, with a new noise-optimized pump.
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
May 16, 2008. Please refer to Netstar --> Star TekInfo --> Star Time for the most current labor time allowance.
In Case of Warranty, use the table.