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Home >> Mercedes Benz >> 2007 >> S550 Base >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> Seats, Restraint Systems -- Testing & Repair -- S-Class (221) >> Testing & Repair >> Remove/install head restraint drive unit - AR91.29-P-1200SX

Remove/install head restraint drive unit - AR91.29-P-1200SX

MODELS 221.0 /1 front seat 

Fig 1: Identifying Front Head Restraint Drive Unit Components
G07601835Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
1 Remove left or right head restraint   AR91.16-P-0040SX 
2 Detach terminal strips (1) on front seat backrest    
3 Disconnect electric connector (2)    
4 Release catch hook (3) to right and remove left front head restraint motor (M27/4) or right front head restraint motor (M28/4)    
5 Install in the reverse order