See also:

Engine block heater (if so equipped)
● Do not use your engine block heater with an ungrounded electrical system or a 2-pronged adapter. You can be seriously injured by an electrical shock if you use an ungrounded connec ...

Storage box (if so equipped)
...

Checking seat belt operation
Seat belt retractors are designed to lock seat belt movement by two separate methods: ● When the seat belt is pulled quickly from the retractor. ● When the vehicle slows down rapidly. ...