S 55 AMG (220.173) V8-5.5L (113.982) (2001)
Power Seat Motor: Locations
Backrest Adjustment Motor (Fore/Aft) - M27m5
Backrest, left front seat
Backrest Adjustment Motor (Fore/Aft) - M28m5
Backrest, right front seat
Head Restraint Adjustment Motor (Raise/Lower) - M27m4
Backrest, left front seat
Head Restraint Adjustment Motor (Raise/Lower) - M28m4