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Home >> Mercedes Benz >> 2012 >> SL63 >> Repair and Diagnosis (Single Page) >> Restraints >> Restraints Control Systems >> Seats & Restraint Systems -- Testing & Repair -- 230 Chassis >> Testing & Repair >> Remove/install WSS control unit - AR91.60-P-0800R

Remove/install WSS control unit - AR91.60-P-0800R

MODEL 230.4 as of 1.3.06 with CODE (494) USA version 

Shown on code (401) Front comfort seats, incl. seat heating and seat ventilation 

Fig 1: Identifying WSS Control Unit Components - Shown On Code (401) Front Comfort Seats
G05076990Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install    
1 Remove passenger seat   AR91.10-P-1000R 
2 Remove seat-back lining from backrest of front passenger seat   AR91.10-P-1910R 
3 Place front passenger seat with backrest on a clean surface    
4 Remove cable ties (2)    
5.1 Detach electrical connector (4) from right front seat adjustment control unit with memory (N32/2) On vehicles with code (873) Heated left and right front seats or code (401) Front comfort seats, incl. seat heating and seat ventilation  
6.1 Detach electrical connector (5) from right front seat adjustment control unit with memory (N32/2) On vehicles with code (401) Front comfort seats, incl. seat heating and seat ventilation  
7 Remove connector (3) from bracket and expose electrical wiring harness    
8 Disconnect belt tension sensor connector (B48/3x1) and detach from seat frame    
9 Remove bolts (6) and remove seat cushion (1) upwards out of side guides IMPORTANTInstallation:  Align guides. Install new bolts (6).  
NOTES Notes on seat occupied recognition   AH91.60-P-0760-01P
10 Install in the reverse order