Had leak through sunroof (sunroof has been fixed) , water seaped to the driver side floor and as a result my power door locks, power windows and power driver seat do not work. Also air bags service light is always on , has anyone else encountered this problem and found a solution TIA.

 

check fuses? (both under the hood and under the dash?). See if you are getting power to the fuse as well. You can also go grab the wiring diagrams at volvowiringdiagrams.com and look for common points - fuses, junctions, grounds, relays etc. I think there is actually a circuit breaker for the windows and seats that can be reset (never had to before and you didn't note which year you have).