2007 Cadillac SRX Heated Seat Gets Too Hot on on Side. When the Seat heater is turned on, it gets way to hot and starts to burn the left leg. Is There anything that can be done, perhaps a regulator or something?

Check for battery power on the orange wire pin D and ground (black wire) pin C- Brown wire pin B should be ignition hot on connector C1 on the Driver Climate Control Seat Module located under the driver seat. If you have power and ground, you may need to use a scan tool to see if there are any codes stored in the module. If the scan tool is unable to communicate with this module, it could either be a bad module or a network problem. If you are missing either battery, ignition hot, or ground- then repair as needed

Electronic's ! drivers Power seat module , driver door module . Do you know anything about automotive electronic's ?

The heated seat module (MSM) controls heated seat operation for both the driver and passenger seats. There are 2 modes of operation available for heated seats; both the seat cushion and seat back heat, or seat back only heat. When a heated seat temperature signal request is received, the MSM will activate both the seat cushion and seat back heating elements. When the heated seat BACK ONLY mode button is pressed once the MSM will deactivate the seat cushion heating element and leave the seat back heating element ON.
The adjustable pedal system is controlled by the memory seat module (MSM).
your best bet , have a qualified repair shop check it out ! Could have DTC'S - diagnostic trouble codes in door module , BCM etc...

This may or may not be the problem , so watch some other heated seat repair videos How to Fix Broken not working seat Heater 2003 10 Cadillac CTS CHEVY GMC SEAT HEATER TROUBLESHOOTING YouTube

As the heater elements get older the parts of them can break down, when this happens the overall resistance reduces so more current passes through the existing elements, causing those left to get hotter.
If left they will burn out completely, there is also a possibility they could damage the upholstery or even catch fire.

They don't in my Cadillac either, They warm just enough not to be cold. I guess that it was designed this way to prevent possible leg burns, sort of like the coffee at Mc Donalds.

Swap it with a relay you know to be good and see if it works again,pick a relay that is not important to the function of your car.

you have a couple of problems first of all your drivers sd=ide heated heat pad is probably faulty, for your heating problem you may have to get the hvac doors recalibrated.

Check the relay for the heated seats first. If not working none of the seats will get warn or hot

most likely relay stuck or switch...

The heated seat element burned out.