Hello, (Sorry if it's a repost, first post in the wrong section.... )
I noticed several times that the back of my driver's seat became very hot sometimes, intermittent , and the switch of the heated seat is in off position .... I don't think it's a problem with the switch because everything seems to work normally exept when it is in the off position, the back is hot, really....

I don't know how to start to investig.... Thanks for your help ! ;-)

 

The circuit runs thru the switch to the seat. I would be looking at the switch, because that is where the power to the seat comes from. Also check connections under the seat .

 

Thanks Milliesdad, I gonna look at it....
I noticed the light (night light) doesn't work either... Maybe a major trouble with the switch...

Thanks again ! ;-)