Fastening and adjusting seat belts
If the seat belt is pulled quickly or sharply, the seat belt retractor locks. The seat belt strap cannot be pulled out any further.
Always engage seat belt tongue 
of the seat belt into seat belt buckle 
of the corresponding seat.
of the seat belt into seat belt buckle of the corresponding seat. Press and hold the seat belt outlet release and slide seat belt outlet 
into the desired position.
into the desired position. Let go of the seat belt outlet release and ensure that seat belt outlet locks into position.
locks into position. Vehicles with automatic co-driver airbag shutoff:
NOTE Deployment of the seat belt tensioner and side impact airbag when the front passenger seat is unoccupied
If the seat belt tongue is engaged in the seat belt buckle of the unoccupied front passenger seat, the seat belt tensioner and the side impact airbag may also deploy in the event of an accident along with other systems.
Only one person should use each seat belt at any one time.
Vehicles without automatic co-driver airbag shutoff:
NOTE Deployment of the seat belt tensioner when the front passenger seat is unoccupied
If the seat belt tongue is engaged in the seat belt buckle of the unoccupied front passenger seat, the seat belt tensioner may also deploy in the event of an accident along with other systems.
Only one person should use each seat belt at any one time.