# Interior Light Keeps Coming On

**URL:** <https://community.cartalk.com/t/interior-light-keeps-coming-on/28564>\
**Category:** Maintenance/Repairs\
**Tags:** lights\
**Created:** [March 31, 2009, 12:32pm UTC](https://community.cartalk.com/t/interior-light-keeps-coming-on/28564 "2009-03-31T12:32:14Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![turner16](https://avatars.discourse-cdn.com/v4/letter/t/b3f665/32.png) [@turner16](https://community.cartalk.com/u/turner16)\
**Post date:** [March 31, 2009, 12:32pm UTC](https://community.cartalk.com/t/interior-light-keeps-coming-on/28564/1 "2009-03-31T12:32:14Z")

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When parked and not running, the interior lights in my 2000 Ford Crown Victoria keep coming on and stay on for a minute or so and then go off. A minute later they go on again and then off. What’s up with that?

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**Author:** ![MikeInNH](https://avatars.discourse-cdn.com/v4/letter/m/a587f6/32.png) [@MikeInNH](https://community.cartalk.com/u/MikeInNH)\
**Post date:** [March 31, 2009, 1:19pm UTC](https://community.cartalk.com/t/interior-light-keeps-coming-on/28564/2 "2009-03-31T13:19:28Z")

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Sounds like one of the door switches is shorting out.

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**Author:** ![Ranck](https://avatars.discourse-cdn.com/v4/letter/r/aca169/32.png) [@Ranck](https://community.cartalk.com/u/Ranck)\
**Post date:** [March 31, 2009, 2:26pm UTC](https://community.cartalk.com/t/interior-light-keeps-coming-on/28564/3 "2009-03-31T14:26:17Z")

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Do the interior lights, when working normally, stay on for a minute after you close the door? If so, this may be a bad body control module. A shorted door switch would tend to make the light stay on constantly, as if the door was left open. The timer mechanism that keeps the lights on for a while after the door closes sounds more likely in this case.

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**Author:** ![tardis](https://avatars.discourse-cdn.com/v4/letter/t/f0a364/32.png) [@tardis](https://community.cartalk.com/u/tardis)\
**Post date:** [March 31, 2009, 3:36pm UTC](https://community.cartalk.com/t/interior-light-keeps-coming-on/28564/4 "2009-03-31T15:36:12Z")

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Probably a bad/sticking door switch.

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**Author:** ![tardis](https://avatars.discourse-cdn.com/v4/letter/t/f0a364/32.png) [@tardis](https://community.cartalk.com/u/tardis)\
**Post date:** [March 31, 2009, 3:38pm UTC](https://community.cartalk.com/t/interior-light-keeps-coming-on/28564/5 "2009-03-31T15:38:37Z")

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Ford doesn’t call them body modules. I believe on that year it was called an LCM (Lighting control module). They later changed the functions around a bit and it would be the FEM (Front Electronics Module). Door switch problems are far more common than LCM or FEM issues. A door switch making partial contact will cause the symptoms described.

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**Author:** ![Ranck](https://avatars.discourse-cdn.com/v4/letter/r/aca169/32.png) [@Ranck](https://community.cartalk.com/u/Ranck)\
**Post date:** [March 31, 2009, 5:23pm UTC](https://community.cartalk.com/t/interior-light-keeps-coming-on/28564/6 "2009-03-31T17:23:33Z")

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Well, certainly the door switch is the thing to check first. It’s cheaper and easier to check. But, I expect intermittent switch issues to occur with motion, not just sitting there. Not saying it’s impossible, just my guess would be the electronics.

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**Author:** ![meaneyedcatz](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/meaneyedcatz/32/692_2.png) [@meaneyedcatz](https://community.cartalk.com/u/meaneyedcatz)\
**Post date:** [April 1, 2009, 2:47am UTC](https://community.cartalk.com/t/interior-light-keeps-coming-on/28564/7 "2009-04-01T02:47:42Z")

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Sounds as if the door latch is sticking. Flood the door latch with PB Blast.