Sunroof Issues (Not drain tubes) created a $600 bill plus..... now stuck with water swishing around the floor boards under carpet.
Does anyone have access to step by procedures or a good comprehensive video showing how to remove seats, disengaging electronic motor and carpet removal for an older 2007 Model XC90
Thank you in advance.

 

search Youtube, plenty of vids on how to remove seats. The seat rails have front and rear bolts covered by end caps so the main trick is how to release the end caps to slide off. (should be a release button the press with a small pick/screw driver). so slide the seat forward and do the rear bolts, then back to do the front. Once the rails are unbolted you can tilt the seat back to access the wire harness to disconnect the power to the motor and SRS leads. I'd probably disconnect the battery first too to avoid setting off an SRS code. The motor and airbag should be self contained with the seat. The carpet is glued down so if you pull it up, you may need to read up on how to glue it back down. To note when I had a similar wet floor issue, I used my shop vac to suck up as much water as I could, then I left the doors open with a large fan to blow air onto the carpet. Left over night that way and it was mostly dry the next day. Helps when you do it in summer or a heated space :-)

 

Yeah it isn't too hard to figure out. Carpet isn't glued down so once the seats are involved it slides out basically.

 

Thanks!
My Son and I were really nervous to do this but think we just pulled it off (Well...…. at least the 1st half)
Carpet and foam has been pulled, soaked up tons of water with towels and filled up two WetVac basins with water.
Now have two fans going.

We only did the front seats...…..
I hope that's enough? or are there more deep troughs in the back...….PLEASE Say no!!!!!

 

If you pulled out that much water then the rear carpets are suspect too. You already have the front seats out. The rear seats are easier. You will probably need a 12" extension on your ratchet to get to the rear bolts on the rear seats. The other concern is that water may have been high enough to impact the yaw rate sensor under the amp that is under the front passenger seat. Water might have hit the connections for the amp too. I would pull both, clean connections with rubbing alcohol, and dry with a hair dryer.

 

Thanks you were correct backseat was much easier and yes there was water back there. It has been removed and have fans going as we speak.

Hopefully this will be my final question:
The three combo foam/carpet pieces clearly have moisture trapped. It appears to be molded plastic sandwiched between thin carpet on one side and thick foam insulation on the other.
Any other alternate faster methods to ensuring that we have removed all of the moisture?

Thanks for everyone's help on this project.
BTW-We are DREADING putting the carpet back in

 

once you feel the car has dried, before you put the carpets back in, I'd do a hose test (or car wash?) just to make sure the corrections to the sun-roof seal addressed the root cause.

 

I don't know a fast way. Sunshine would be your best friend.....but it is December 23, so unless you live in the desert southwest sunshine is at a premium. I would just hang them up in a garage or basement, buy a small space heater to run underneath them, and wait. It will take several days at best.

 

Final comment - run your hand underneath the heavy insulation on the firewall just above passenger and driver footwells and make sure that the foam there is dry. There is a drain for the AC/Heater blower that runs to a grommet on the right side of the passenger footwell. My drain was okay but I think that I was getting water in at the air plenum inlet that is underneath the plastic piece that seals across the base of the windshield (I think we call this the cowling). I think this water was dripping down behind the blower motor for the AC/Heater - not much but just enough. There are drains on both sides of the car underneath this cowling. The drain holes can get clogged with debris that builds up over time. Additionally, there is a black cover that sits over the air plenum to prevent splashing down into the blower motor. This cover could be bigger. I jerry-rigged a rectangular bucket that I cut down to fit and placed it over the black cover for additional protection. Finally, there is a foam seal that sits between the air plenum and the guts of the AC/Heater system that resides under the dash. This foam seal is likely crumbly and not very effective anymore. Unfortunately, you can't get to the foam seal without taking out the dashboard and dropping the guts of the AC/Heater system. While I definitely would not recommend doing this, I was feeling ambitious and took out the dashboard and replaced the components of the AC/Heater system that typically go bad such as blower motor, blower motor resistor, heater core, and AC exchanger. What the heck, I already had all the seats out, all the carpets out, the headliner and pillar covers out, etc. I am pretty confident that the swamp monster I purchased will not leak during its remaining lifetime as long as I am good about cleaning the sunroof drains once a year and popping off the cowling cover to clean underneath. Cars that get parked outside collect a lot of debris.

 

Thanks to all who provided their valuable insight, experience & assistance.
Looks like we are all sorted.
Rear seat and carpet have been reinstalled and will tackle the front tomorrow.