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Home >> Mercedes Benz >> 2018 >> S450 Base >> Repair and Diagnosis (Single Page) >> Restraints >> Restraints Control Systems >> Seats, Bunks, Restraint Systems - 222 Chassis (2 Of 4) >> Testing & Repair >> Remove/Install Active Belt Buckle Control Unit >> Remove/Install Active Belt Buckle Control Unit - AR91.40-P-1523LF
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Remove/Install Active Belt Buckle Control Unit - AR91.40-P-1523LF

Model 222.0/1/9 with code 223 (Electric backrest adjustment and head restraints) with code P36 (PRE-SAFE® rear package) except code Z07 (B7 armoring on special protection version) 

Model 222.0/1/9 with code 224 (Individual rear seats) with code P36 (PRE-SAFE® rear package) except code Z07 (B7 armoring on special protection version) 

G15367649Courtesy of MERCEDES-BENZ USA
Notice  Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
  Note on working on active belt buckle   AH91.40-P-1521-01LFA
REMOVINGINSTALLING Remove/install     
1 Connect vehicle diagnosis system and conduct initial startup of active seat belt buckle control unit (N2/3) When replacing the active seat belt buckle control unit (N2/3).  
REFER TO SELF-DIAGNOSTIC SYSTEMS     AD00.00-P-2000-04B
2 Remove partition wall panel (1)   AR68.30-P-4600LF
3 Disconnect battery ground line   AR54.10-P-0003LF
4 Unscrew nut (2)    
5 Remove active belt buckle control unit (N2/3) from the brackets (arrows) and swivel to one side    
6 Remove electrical plugs (3)    
7 Remove active belt buckle control unit (N2/3)    
8 Install in the reverse order