Hi Mitsubers ;-)
My back is cooked because of my heater seat (Driver seat's back) heats at high level..... That's not cool.... The switch is switched to OFF but still running... Randomly... yes, sometimes, it's off

I don't think it's a switch problem, or the entire seat should be hot... but in my case, the back only gets hot...

Thanks for your help... Wire Short in cushion ?

Very useful in winter but days are warmer and warmer... ;-)