Restraints - Seat Weight Sensor Replacement

DTB

Date: October 2, 2008
Order No.: S-B-91.29/117a
Supersedes: P-B-91.29/117 and T-B-91.29/118 dated October 2, 2006
Group: 91







SUBJECT: All Model 164 and 251 Vehicles
All Model 211 Vehicles, MY04 as of Production 19.2.04 and Later
All Model 219, MY07 and Later
Replacement of Weight Sensing Seat Sensors

If you receive customer reports in the above model vehicles of the passenger side Weight Sensing Seat (WSS) not functioning correctly the cause could be the WSS sensor mounted to each corner of the seat frame. The seat frame assembly should no longer be replaced as an assembly since it is possible to replace each individual WSS sensor. If it is determined one or more of the WSS sensors is at fault follow the procedure listed below to resolve.

1. Remove/install WSS sensors. Refer to WIS Document AR91.60-P-0811T (211 and 219), AR91.60-P- 0810GZ (164 Left and right front sensor), AR91.60-P-0810GA (164 left and right rear sensor) and/or AR91.60-P-0810RT (251 all sensors).

NOTE: Move seat fully forward and upward prior to disconnecting from power. This will ensure access to right front sensor bolt.

2. Use special tool W211 589 00 32 00 and STAR Diagnosis to recalibrate the WSS sensors. STAR Diagnosis path: Control Units -> Body -> WSS -> Initial Startup/Recalibration

NOTE: All seat frame assemblies replaced under warranty for faulty WSS sensors will be debited back to the dealer.

Special Tools







NOTE: This special tool should already be in every MB Dealers Special Tool Inventory as it was released and automatically shipped in March 2002.

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 October 2, 2008. Please refer to Netstar -> Star TekInfo -> Star Time for the most current labor time allowance.

In Case of Warranty

Operation: Short test, perform (54-1011)
Front passenger seat, remove/install (91-3602)
Driver seat, R&R (91-3512)
WSS left front sensor, replace (with seat removed) (91-9357)
WSS right front sensor, replace (with seat removed) (91-9358)
WSS sensors, calibrate (after check) (91-9353)