Press button h. Each pulse on the button will obtain increase by one unit. Automatic fast increase is obtained by keeping the button pressed for few seconds. When you are near the required value, release the button and complete adjustment with single presses.
See also:
General instructions for using the seat belts
The driver must comply with (and have the vehicle occupants follow) all the local
legal regulations concerning the use of seat belts.
Always fasten the seat belts before starting.
Seat belts are ...
Instruments
Instrument background and type can change according to versions. ...
Front And Side Impact Sensors
In front and side impacts, impact sensors can aid the ORC in determining appropriate
response to impact events. ...