My daughter's 1999 Jeep Laredo's headlights intermittantly flash when the car is turned off and sitting in the driveway. It stopped for a while and now is back to flashing again. I think it has something to do with sitting in the hot sun all day. It stopped for awhile and started back up again when we had a run of hot weather in October. Any ideas?? Thanks in advance for any help you can give me!

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