Front emergency tensioning retractor, component description - GF91.60-P-4042G
MODEL 463.306/336/346 as of model year 2011/YoM 10
MODEL 463.202/222/236/237 as of model year 2009/YoM 08
MODEL 463.247/248/249/254/270/271/303/340/341 as of model year 2007
Location
The emergency tensioning retractor unit is integrated in the respective front automatic belt retractors. They are located on the B-pillar on the left and right side of the vehicle.
Task
The emergency tensioning retractor unit removes the seat belt slack in the event of a frontal impact or a rear end collision and prevents the film reel effect of the driver or front passenger seat belt from occurring. The close-fitting seat belt means that vehicle occupants are exposed to the deceleration forces acting on the body at an earlier stage.
The emergency tensioning retractor squibs are triggered by the restraint systems control unit (N2/7).