Ok, finally decided to check for wires. As I have the 3rd row option I couldn't simply pull up the seat. I actually just raised it up so I could take a peak inside. I did see some wires but not sure if those are for switches indicating the seats are locked in place or for the heater. Judging by the wire gauge, I think they are for the switches. Does someone have 3rd row option with heated seats who can look under the seat and perhaps take a picture? I will try to post a picture tomorrow during the day.