What is the reason for water leakage in the A-pillar of the eighth-generation Accord's cabin?
2 Answers
The reasons for water leakage in the A-pillar of the eighth-generation Accord's cabin are as follows: Clogged sunroof drainage holes: If the sunroof drainage holes are clogged, rainwater that falls on the car cannot be drained in time, and the water will flow along the interface of the conduit into the interior of the car's A-pillar. Poor windshield sealing: After replacing the windshield, if the adhesive is applied unevenly, the car's sealing performance will decrease, and rainwater will seep into the car through the gaps. If the windshield has not been replaced, it is likely that the aging of the sealing rubber strip is causing the leakage. Aging window rubber strips or poor sealing of roof rack mounting holes: The sealing rubber strips of the windows will harden and age over time, reducing the sealing performance of the windows. Additionally, if the mounting holes for the roof rack are not properly sealed during installation, water leakage can occur in the car.
I've repaired many 8th-generation Accords, and the most common cause of A-pillar water leakage in the cabin is aging or damaged roof seals. Over time, the sealant develops cracks, allowing rainwater to seep into the vehicle along the A-pillar. Additionally, clogged sunroof drainage holes are quite frequent—debris blocks the channels, causing accumulated water to leak through A-pillar gaps. Another issue is rust at body welding points; if welds aren't tight, heavy rain can lead to water ingress. When handling such problems, I typically first inspect the sunroof drains, clean them, then check the seal condition—replacement is needed if ineffective. Regular maintenance like clearing drainage holes and inspecting sealant can effectively prevent leaks and extend vehicle lifespan.
