My 06 MCS vert has a problem. The problem is, the passenger seat back heater is always on. No matter if the console switch is on or not.

And add to this, the AIRBAG light is also on in the dash. (not overhead) I think theses things are related.. but Im not sure where the controller for them are.

Does anyone know where the controller box is for these?

 

It's part of the Body control module. Needs to get to the dealer to be diagnosed.

 

But where is it?

 

I took a quick look at the wiring diagrams, and this seems to be one of the few things not controlled by the BCM. The seat heater is connected to power from the ignition switch, and the seat heater switch directly controls the on/off. So the "controller" is the switch.

I doubt the airbag light is related. Once an airbag warning goes on, it will not reset by itself even if you correct the offending condition. It needs to be reset with a diagnostic tool at a dealer or shop. By any chance, did you ever remove or disconnect the seats at some point?

 

check the connections under the seat in question.