The driver side seat heater, in a 2006 Satern View, is not working. Where is the fuse/circuit breaker located?
I don’t know where the fuse for your car’s seat heater is, but I would think that it is more likely a broken wire under the seat. That seems to be more of a problem. Moving the seat back and forth can wear the wires. It also can cause a short under the seat and that could be a reason for a blown fuse.
Fuses and circuit breaker locations are shown in your owner’s manual.