As an owner of a 2004 with a chronic leaking sunroof, my best advice would be for you to take the car into the dealer for repair. I am currently on four attempted repairs. Not looking forward to this winter's rains.

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David

Macan Turbo / 997.1TT (gone) / e83 (gone)/ e46 M3 / e90 335xi (gone)/ Sienna XLE Ltd
B7 A4 2.0T CVT (gone) / Pilot EXL-RES (gone)