Plugged moon roof drains can cause a water leak inside the car. The water will usually leak onto the driver's or passenger's head when the car turns a corner.
Car Problem Reports
Honda Accord Plugged Moon Roof Drains May Cause Water Leak
Honda Accord Problem
Average Mileage: 104,000 mi (30,000 mi - 186,000 mi)
Visitor, 2010 Honda Accord, 30,000 mi
Use a long nylon extension attached to a compressed air gun. There are 4 drain holes in the sun roof drip pan; 1 in easch position: The right & left front and the right & left rear. Open the sun roof. The fronts are easy to locate and blow clean. The rear drain ports you will need to "fish for" but are easy to locate & you will feel then the tip finds the openiing. Simply insert the blow gun nozel into the drain hole & blow for 5 seconds to remove debris covering the drain exits in the wheel wells.
Visitor, 2002 Honda Accord, 110,000 mi
The problem was: very wet floorboards in front (and possibly also rear) of the car. This produced a very bad odor that persisted for a long time. At first I thought it was a windshield problem. Rather, there was an issue with the sunroof (moonroof?) hose. Either it was disconnected or clogged. A local Honda dealership repaired it; took two visits, the first visit didn't quite "take."
When it rains the drivers side carpets front and back get
soaking wet? Sealing the windshield did not help?
Visitor, 2009 Honda Accord, 40,000 mi
Water leaking in driver's side at pillar area seam and also water coming up through carpet on front driver's side. Took it to the dealer to be fixed - however, next rainstorm the leaking problem continued. I took it back to the dealer again today - we'll see if they fix it correctly this time.
Visitor, 2004 Honda Accord, 104,000 mi
My sunroof is still awesome!!! Just wanted to say for report #2 thats what she said!!!!
Visitor, 1996 Honda Accord, 186,000 mi
I have the same problem. Mine is an aftermarket sunroof, in addition my motor male socket seems to just turn in the female socket that open the sunroof. So I just decided to use some weatherstrip silicone and cover the gaps....yeah!!