What is making a tapping noise against windshield on 1999 Grand Marquis?

Asked by Jun 22, 2015 at 04:04 PM about the Mercury Marquis

Question type: Maintenance & Repair

1 Answer

I feel like it happens when i turn on my AC only. It will randomly tap few times, quit, then do it again somewhere along the way. It sounds as if someone is tapping against the window with a key.

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