I agree the switch must be bad. I took apart the seat warmer assembly, just under the gear shift and above the center console, and it appears to work fine.
There is an electrical plug that I am going to disconnect to test whether it is in fact the switch causing the malfunction. I think I could probably find the part online and connect it myself, if all esle fails.
However, first I was thinking that I would dissconnect and reconnect the battery, since dissconnecting the battery resets some electrical functions, I think?
Any other ideas? Thanks in advance, Brett