I learned that there are 4 drains in the 99 sienna roof and probably in all years of that body style i actually had a hard time confirming this even toyota dealer couldn t say over the phone.
1993 toyota moon roof drain holes.
The drain hole exits under the back of the truck basicly under where the little storage compartment is.
I have 1994 toyota land cruiser.
Test the flow of each drain by pouring a small amount of water about cup down the openings of the drain where they are located near the sunroof.
You can see the 2 or so of tubing sticking out.
You might poke the wire right through the tubing or disconnect it from the drain hole.
These should be self evident and located in the front and rear corners of the sunroof area.
You may be tempted to run a coat hanger down the tubes or blast them with compressed air.
Open the sunroof all the way so that you can see the drain holes.
If you are noticing water in your under carriage especially after heavy rain it could mean your drain hole in your sunroof area is clogged and needs to be cleared.
Depending on where you live sunroof drains may become plugged sooner than later.
The tubes clog with dirt and debris and the water will eventually begin draining inside of the car.
Video tutorial on how to unplug a sunroof drain.
Unblocking sunroof drains is easy when you can access the holes but what if you can t access them.
Fyi for anyone suspecting that your sunroof may be the source of your leak.
Those tubes run through the door pillars and drain through to the rocker panels.
When cleaning the drain it s also a great idea to ensure there is no debris around the sunroof area which could worsen the clog or cause another clog.
If you live in a treed are.
Cleaning the drainage tubes is an imperative task on the toyota rav4.
The drains normally continue down the roof or window posts directing water flow to the underside of the vehicle.
The water will damage your carpet and risk creating mold inside the.
Open your sunroof and look for the drain holes in both front corners.
Passenger side is easy.
It s a good possibility that a clogged drain is the cause.
The tubes collect and drain water off the roof to help protect the sunroof area.
Pour some water in each hole to verify water is coming out.
Run some weed eater line down each corner drain hole in the front.
