Mercedes Benz S 550 4MATIC Technical Problem #LI91-40_P-050718 Date: 120405 Restraints - Great Effort To Pull Out Front Seat Belt Driver or front passenger seat belt can only be pulled out with great effort.
Mercedes Benz S 550 4MATIC Technical Problem #LI91-40_P-050718 Date: 120405 Restraints - Great Effort To Pull Out Front Seat Belt Driver or front passenger seat belt can only be pulled out with great effort. Topic number LI91.40-P-050718 Version 1 2010 Mercedes Benz S 550 4MATIC (221.186) V8-5.5L (273.968) Page 43 Design group 91.40 Seat belts, emergency tensioning retractors Date 04-05-2012 Validity Model series 164 and model series 251 as of production date 06.2009 (code 800) and model series 221 as of production date 09.2009. Reason for change Complaint: Driver or front passenger seat belt can only be pulled out with great effort. Cause: During the seat belt adjustment sequence after buckling up (belt slack elimination) the control unit A76 (left front reversible emergency tensioning retractor) or A76/1 (right front reversible emergency tensioning retractor) detects an undervoltage. The undervoltage can occur briefly during the starting procedure. The u...