Notes on seat occupied recognition - AH91.60-P-0760-01SX

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MODEL 221 with CODE 494 (US version)

Front passenger seat cushion

Location

Up to 4.9.08 the weight sensing system (WSS) sensors are on the seat frame for the front passenger seat.

As of 5.9.08 weight sensing system (WSS) sensors on the seat frame are discontinued, weight sensing is then realized through the upholstery top layers on the front passenger seat.

Shown on MODEL 221 up to 4.9.08

Fig 1: Identifying Front Passenger Seat Components (Shown On Model 221)

Courtesy of MERCEDES-BENZ USA

Note on replacing the seat adjustment mechanism

The seat adjustment mechanism with WSS sensors at the seat frame is no longer available as a replacement part. Before removing the seat adjustment mechanism, the installed seat frame must be checked. If a seat frame with WSS sensors is installed, the front passenger seat cushion must be replaced in addition to the seat adjustment mechanism.

Note on replacing front passenger seat (as of 5.9.08)

The new front passenger seat cushion is only delivered complete with seat occupied recognition pressure sensor and WSS control unit and already precalibrated in the factory. The sealed connector must not be separated. This leads to malfunctions of the restraint system (SRS) on the passenger side. Commissioning of the weight sensing with Star Diagnosis is to be performed additionally following installation.