I found the issue with the passenger seat. If I unplug the fore and aft motor and then plug it back in, all functions of the seat work, including the heater. When I try lowering the rear of the seat pad down, everything stops working until I disconnect the fore and aft seat motor again. I believe it's an issue with the rear part of the seat up function that is binding that particular motor. At least the seat warmer works, so as we get closer to Montana winter, that'll keep my wife's butt happy until I get motivated enough to pull the seat and rebuild the motor. I think the formula is something like this: Warm Buhind = happy wife = happy life