Heater
The heater can only be used while the engine is running.
See also:
Seat belt pretensioner system and force limiter system
The driver’s seat and front passenger’s seat each have a seat belt equipped with
a pretensioner system. ...
During cold weather
The capacity of the battery is reduced at low temperatures. This is an inevitable
result of its chemical and physical properties. This is why a very cold battery,
particularly one that is not full ...