Belt height adjuster Automatic belt retractor, belt tensioner and belt roll-back function Please refer to at the start of the chapter on page 34. Please refer to at the start of the chapter on page 34. Seat belts are part of the vehicle's safety system → page 45 and are made up of the following im- portant functions: Automatic belt retractor The safety belts are fitted with an automatic re- triever roller, this device keeps the safety belt ad- justed to the passenger's body. Full freedom of movement in the passenger's upper body area is made possible when the seat belt is pulled slowly or when the vehicle is travelling at normal speeds.
However, the automatic belt retractor locks the seat belt if the belt is pulled out quickly, during sudden braking, when driving uphill or downhill or around bends, and during accelera- tion. Fig. 35 Next to the front seats: seat belt height ad- juster. Depending on the vehicle's version, seat belt height adjustment may not be available. The seat belt height adjusters for the front seats can be used to adjust the seat belt position on the shoulder area according to the body size, so it can be fastened properly: Seat belt tensioners Front seat belts are equipped with belt tension- ers and roll-back function. Rear seat belts are not equipped with these features.
– Press and hold the shoulder belt guide as indi- cated by the arrows → Fig. 35 . Belt tensioners are activated by sensors during severe frontal and rear collisions, tightening the seat belts against the direction in which they are pulled. Safety belt clearances are eliminated when the belt tensioner is activated, reducing the forward movement of passengers towards the impact direction. Belt tensioners works to- gether with the airbag system. Belt tensioners are not activated in minor front collisions, rolls or accidents in which the threshold in the control unit is not exceeded.
– Push the shoulder belt guide up or down so that the seat belt lies over the middle of the shoulder → page 39, Seat belt routing . – Let go of the shoulder belt guide. – Pull sharply on the seat belt to check whether the shoulder belt guide is engaged securely. WARNING Never adjust the seat belt height when the ve- hicle is in motion. A fine dust may be generated upon activation. This is perfectly normal and does not represent fire risk. Seat belt roll-back function The front seat belts are equipped with roll-back function. The seat belt roll-back function minimizes seat belt force acting over the body in case of acci- dents. 25A.5L1.POL.20 Safety 41