Emergency tensioning retractor component description - GF91.60-P-4058MCC

MODEL 451.3 /4 

Location 

The emergency tensioning retractor is located at the inside of the B-pillar.

Fig 1: Identifying Emergency Tensioning Retractor, Driver GUS Squid And Front Passenger GUS Squib

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Task 

The emergency tensioning retractors take up the seat belt slack in the event of a frontal impact or rear-end collision and prevent the film reel effect of the seat belts.

The close-fitting seat belt means that vehicle occupants are subjected to the deceleration forces acting on the body at an earlier stage.

Triggering is conducted by the restraint systems control unit (N2/7) igniting the squibs.