Ford Mustang intermittent water leak in passenger side and driver's floorboard during rain with potential electrical issues on Ford Mustang

Submitted by Vehicle Owner · Aug 7, 2025
Published by RepairPal

Problem overview

Some Ford Mustang owners report experiencing intermittent water leaks affecting the passenger side and driver's floorboard during rain, which can lead to potential electrical issues. These leaks may originate from clogged drain channels, failed stickers covering holes, or compromised seals around the windshield, cowl, and heater core. Owners have noted that the A pillar panels and cowl area are common entry points for water, necessitating careful inspection and maintenance of these areas. Additionally, water intrusion poses risks to electrical components, as pooling water near these systems can result in malfunctions or short circuits. To resolve these issues, some owners seek professional assistance or consult Ford dealerships familiar with Technical Service Bulletins on water leaks. Taking proactive measures, such as clearing drain holes and resealing vulnerable areas, is essential to prevent future leaks and protect the vehicle's electrical integrity.

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Ford Mustang vehicles with this problem

1 model year affected

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