Q: Driver mirror seems to be in the night vision mode all the time. What could be the cause?

asked by on October 29, 2016

My car is a Cadillac XTS 4The drivers side mirror appears to be in the night driving mode all the time. it looks like it has a permanent black mark st the top and you can see the heating lines. not sure what to do to fix.

My car has 54000 miles.
My car has an automatic transmission.

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