Seat heater

saturn

#1

I have a 2007 Saturn Relay with heated seats. One of the seat heaters has quit working and now the other one gets super hot after it is turned on for a while. What is causing the seat to get super hot? I don’t want to burn up anything.


#2

Sounds like the controls themselves are bad, perhaps the thermostat portion. I don’t know if these are controlled by a Body Control Module (BCM) as so many other things are these days, but perhaps someone on a Saturn forum would have some insight.

Sorry, I wish I could be more help, but I’m unfamiliar with the heated seat systems on Saturns.


#3

I agree with @samemountainbike here. The only experience I’ve had with heated seats is with the ones in my daughter-in-law’s truck. She had me disconnect the one that was working because it got too hot. I have a theory that both seats must work off the same circuit and when one fails the other gets more current somehow.


#4

I thought of that too, miissileman, but having them in series rather than parallel would seem too “3rd grade” to believe the designers would do that, and I can’t think of a way they could be in parallel and the failure of one would allow more current through the second. But, then, I don’t have the circuit schematic in front of me! If I did, I’d probably say “oh yeah, no wonder…”.


#5

There are fuses and relays that could be causing the problem The BCM is supposed to control the temp using the sensor in the seat. The HVAC control sets demand.