The front passenger and driver mats were soaked while sitting in the rain. All windows and sun roof were closed. Where are sun roof drains located

Body leaks can be a nightmare to find as the ingress point is sometimes well away from the wet spots.

Door seal, sun roof, sun roof drain(s) and windscreen are the most common ingress points though sometimes a blocked heater drain can cause a flood especially if the car is not parked on level ground.

I had this problem once with mini-van that I owned and it turned out that the grill on the outside, at the base of the windshield had plugged with tree debris and the water could not find the drain hole so it backed up and came in under the dash and filled the cavity where the blower motor for the heater sits.

I cleaned that out, pulled the blower motor and dried the tub it sat in which by then had mildewed, then put it all back together and things were fine. The blower motor had shorted out by the way so I had the fun of buying and installing a new one.

hi i'm not familar with your car but if you can wind the sunroof back so the sunroof is fully open look at all four corners where the sunroof sits into there should be at least 2 drain holes which can over time become clogged with debris, if you find them use some warm water and flexi pipe to clean the drain holes out. hope this helps

The two most common causes are rain water leaking in or the ac drain being clogged up. I would vote for rain water if the entire carpet area is wet.
Could be coming in around the windshield, or one of the door gaskets.

Sun roof ¿
wiper motor compartment
full of leaves
rust issues
door seals?

a couple things to look at if it has a sunroof the sun roof would have drain hoses that run down in each corner next you need to look at the cowl this is the section in front of the windshield that has a drain on it as well if you find nothing there the next step would be to remove the seats and carpet and sit in the car while running water over it either way you should remove the carpet and make sure it is dry all the way threw or mold will start to grow and you will never get ride of it not good for your heath other key spots to look at is if the windshield was ever replaced it could be a poor seal

Not familiar with the Volvo, but many cars (Toyota, Lexus, Acura, Honda, etc.) have drain holes at the corners of the sun roof assembly. These holes allow water that gets past the sunroof gasket to drain through tubes that carry the water to the bottom of the car, where it exits the car.

These drain holes are prone to clogging. If the Volvo setup is like those cars mentioned, you can see the front drain holes by opening the sunroof and looking closely at the two front corners of the assembly that holds the sunroof. I have used plastic weedeater line to open up these lines. Compressed air can also be used.

have the rubber seal around your windshield check by a wind shild installer base on what you explain the sel at that corner is leaking and the water is leaking back into the vehicle

you need to check and see if there is any debris blocking the drain tubes for the sun roof. If not then you need to follow the tubes and look for kinks or other reasons why its not able to drain off quickly.

you have 2 drains in the front that go down the a pillars and dump near the fenders.

The rear usually go down the B pillar or C pillar and out thebottom near the rocker panel.

Blow them out from the top with compressed air and make sure you have air flow at the exits.. Open the roof to see drain holes in the four corners.

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• The roof opening panel leaks

• Roof opening panel adjustment.
• Front rail seal.
• Drain tube attachment points.
• Roof opening panel water trough and seal.
• Roof opening panel drain hose.
• Roof opening panel seal.
• Roof opening panel.

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1 is the drain hoses