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I have a 2007 honda pilot and have been dealing with a water leak in the roof for over a month now. My mechanic has replaced the windshield twice, thinking that it was a bad seal. He now thinks that it might be a leak in the sunroof, specifically he thinks that it might be one of the drains from the sunroof being broken.

The water itself shows up between the driver side window and the windshield, just above the airbag compartment.

Does anyone know if this is a likely explanation? Are there other things that I should have him look at first?

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I don't have any Honda experience, but on my Mitsubishi I have that exact problem. There's a primary seal around the sunroof to keep water from getting into the sunroof recess. There's also a drain system inside the recess to drain out water that gets past the seal. It started leaking right where you say, and it was due to the drainage tubes being kinked/cracked and leaking.

I hope yours is easier to fix than mine. In mine the drain tubes go into the shell of the car, between some basically inaccessible (without cutting the shell open) parts. I ended up using the black RTV gasket maker to just seal the sunroof shut and keep water from seeping down to the drains to begin with.

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Some times the sunroof drains can get plugged with leaves or some other debris and then the water starts overflowing into the car. You could try blowing compressed air through the drains and see if it fixes the problem.

I have also seen where the drain hoses have become detached and let water leak into the car. To check for that would involve pulling down the headliner.

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For first generation Honda Pilots, the common cause of roof leaks is the screw holes of the standard equipment roof rails. They should be removed, the roof and rail mounts cleaned, and then replaced using an automotive seal product such as 3M Dynatron 550 Auto Seam Sealer.

Tube of 3M Dynatron 550

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THERE IS A WATER PROBLEM NOT DO TO SUNROOF DRAINS I FOUND , IM AN UPHOLSERER AND A CUSTOMER HAVEING SAME ISSUES AFTER WE DID HEADLINER SO REMOVED TO SEE WHAT PROBLEM WAS AND NOT A WINDSHEILD OR DRAIN .THERE ARE SEAM IN ROOF WERE THE ROOF PUT TOGETHER JUST UNDER ROOF RACK SEAMSEALER THEY USE AT FACTOR LEAKS WHEN WE RAN WATER ON ROOF WITH NO HEADLINER IF YOU SPRAY FROM FRONT OFF CAR .MADE LITTLE VIDEO WERE ON U TUBE HARD TO NOTICE IF YOUR THINKING LIKE MOST THE DRIAN .Sorry l messed up it was for Ridgeline but feel the roof is seamed the same .Hope it helped ,They fixed leak headliner in again

  • Hi! Welcome to Motor Vehicle Maintenance & Repair! Could you edit your answer to use proper capitalization and grammar? It looks like you have some useful information, but it's hard to read as it stands. Also, instead of noting outside resources like YouTube, try to put the relevant information in your post itself. Thanks! – Cullub Jun 11 at 2:38

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