See also:

Lights-On Reminder
If the headlights, parking lights, or cargo lights are left on after the ignition is turned OFF, a chime will sound when the driver’s door is opened. ...

Engine
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Extreme Cold Weather (Below –20°F Or –29°C)
To ensure reliable starting at these temperatures, use of an externally-powered electric engine block heater (available from your authorized dealer) is recommended. ...