Join Date: Jun 2006
Location: Eastern ON Canada
Car: 07 OBW 2.5i D-4AT
Feedback Score: 6 reviews
Probably some water or condensation got into the switch behind the rubber cover, and it being very cold, has frozen a bit so that the switch. If the car is parked in a warm garage, the water might dry out. It might be possible to lift the rubber cover off and use a hair dryer to speed up the drying.
Check that the rubber cover is on properly and there's no tears in it that allow water to enter.
To protect the battery, the ceiling light can be switched off (the switch has three positions, ON, DOOR, and OFF) however, the dash warning light cannot be easily defeated. This is an LED and shouldn't drain the battery unless it is already quite run down and there are no other lights on.
The alarm is sounding because it senses a door open when it shouldn't be (e.g. the car has been locked)