last time in drove my 04, i dont think the heated seat was working. i thought i remember reading it could be a tear in the soldering in the cushion from sliding in and out? any way to test this? I assume I could check if the heater is getting power?

 

Is the light coming on via the switch? more then likely, the wire is burnt in the seat. I just recently fixed mine it took me longer to read what needed to be done then to actually fix the seat. there is a sticky that explains how to fix it.