S80 Movable seat fuse keeps blowing

[Mike Shuken]

I have a 2001 S80 T6 with the power/heated seats. About a month ago I realized that the passenger side front seat would not go forward or backward (electric).

I pulled off the fuse box cover and noticed that the fuse was blown. So I replaced the fuse. When I toggled the seat switch to move the seat it didn't move and it blew the fuse. I tried another fuse and the same thing happened.

I was going to say that the heated part of the seat still works because the orange lights on the panel indicating the seat is heating stay lit with no problem whether my fuse is blown or not, but I never checked if it was actually heating. Car is not here right now but I'll check when I have it back, not sure if it is relevant.

Any suggestions on how to track down what is blowing the fuse when I toggle the move switch?

Thanks

[p0peye]

I don't have a lot of experience with Volvos, but I'm just going to spout off some basic electrical troubleshooting in this matter.

1. If you can gain access to the switch, remove it and verify that the wires aren't lose or touching each other or metal.
2. While you have the switch out, replace the fuse again. Don't touch any metal on the car and activate the switch. A lot can be told from the source.
3. Be sure that you don't have something jammed in the way of the seat tracks.

It'd be my guess that some water or other liquid got into the switch, shorting it out. Before spending the money on a new one, remove the one from the driver's side temporarily and use it in place of the other. Replace the fuse, and actuate the seat. If it moves without issues, replace the switch.

Good luck,
Tom