Rav4 sunroof leaks because of worn rubber seal and not because of clogged drain hole

These usually have a drain in the unit which may be clogged. If it is just the rubber worn you might try using black RTV to make a patch, as a cheap fix, or just replace the worn part.

Can't fix anything till you find out where the leak is

Get inside & have someone run the hose on it

Remove whatever trim you have to,to see the water
entering

It sounds to me that your problem is above the headliner. There are drain tubes at each corner of the sunroof pan that allow water to drain under an outside of the vehicle. It sounds like one of the front tubes has either cracked, come off, or are just plugged up and allowing the water to overflow the pan.

You use low pressure air.

The drail holes in the sunroof are probably clogged up with debris, allowing the water to overflow into the car. Open the sunroof, look to the extreme front and rear of the sunroof tracks. That is where the four drain holes are and they may be clogged. Remove any large pieces of debris by hand and then use a small, pointed object to clear the drain holes. That should solve your sunroof overflow water issue.

Check for a drain hole around the sunroof and spray the rubber with spray can silicone spray to soften the weatherstripping so it will be easier to seal

The 2002 Explorer drain holes come out in the door panel. (I looked under the car for awhile before I figured this out.) Open the door and you'll see a rubber grommet between the hinges. Gently poke a wire in the hole to loosen caked dirt.

Gary in Seattle--10/14/11

This is easily fixed if it is in fact a clogged drain. Open the sunroof, and you will see a small drain hole at each of the four corners of the opening. The holes drain down through the inner body work, and the water leaks out through a bottom weep hole. Try pouring a few ounces of water down one of the holes, it should flow freely, and you will see it puddle under the car. If the drain is clogged or flows slowly, you must unclog it by blowing compressed air down the hole, or use a long flexible wire to roto-root the clog. Do this for the other three drain holes, and you should be ready for the next rainfall or car wash. While you are at it, clean out the weep holes at the bottom of the rocker panels, there are several holes on each side of the car. Good Luck.

It sounds as though you will have to replace or clean and lubricate the weather strip seal. Take the car to a car wash and vacuum the back floor dry; otherwise it will start to smell.

I had the same problem... fairly simple fix. Just park the truck so the front end is lower than the back. Open then sun roof and you will see in each corner on the front of the sun roof that there is a little hole..this is the drain hole. Pour some water down the hole and see if either one is backed up. (If so keep reading for the solution) If not, park so the back of the truck is lower than the front. The channel that leads to the front drain also leads back behind the rear doors to the rear drain for the sun roof. Pour water in the channel and see if it drains. It will drain right in front of the rear tire, just behind the running board. If you dont get any drainage, you found the clogged drain. To clean the front draines, simply blow it out with an air compressor. For the back ones, you should check underneath the vehicle right in front of the rear tire and see if you can find the drain. If there is debris or dirt there, it could be clogging it. Clean it up and try again to see if you can get some drainage. If it isn't draining and the bottom of the drain is clean, it looks like you are going to have to tear down the head liner and try the same steps as cleaning the front draines. Good luck, and I hope this helps!