Problem With My Courtesy Light
Q. I have a 2010 Ford Edge and the door ajar light comes on. I have had the switch replaced before under warranty but now I am having the same problem. I went looking for a door switch (pin style) that cars have had for years but didn’t find one. How do the curtesy lights work on this model?
A. There was a time when the dome and other interior lights were on very simple circuits. Today that has all changed, now the lighting circuit runs through the car’s computer system and smart junction box. The switch is actually part of a latch/lock system. Unfortunately there is no repairing the switch only replacing it. A good technician will check the system for fault codes as well as all of the associated wiring.
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