Ford Explorer windshield leak caused by clogged roof drains leading to corrosion of moonroof control unit on Ford Explorer

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Ford Explorer owners report experiencing windshield leaks that lead to corrosion of the moonroof control unit. These leaks can result from a damaged or worn windshield seal, allowing water to ingress and drip onto sensitive components like the GEM or moonroof control unit. Many owners find it crucial to address the root cause of the leak, such as repairing gaps between the windshield and the roof, to prevent further water damage. To fix a leaky windshield, some owners apply Liquid Butyl Sealer under the weatherstrip around the windshield periphery. However, there is a risk that the windshield may break during the repair process, potentially necessitating replacement. It is essential for owners to inspect the windshield seal and take prompt action to mitigate any damage to internal components.

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