Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Module, Heated Seat (HSM): Description
The Heated Seat Module (HSM) (1), also know as the comfort seat wheel module, is a microcontroller designed to use the Controller Area Network (CAN) data bus messages from the U-Connect Touch™ screen module to operate the front heated seats, front vented seats, heated steering wheel and the rear heated seats, depending on how equipped.
When equipped with rear heated seats, the HSM receives request signals from the rear heated seat switches over hard-wired circuits.
The HSM has multiple electrical connector outlets (2) and three retaining tabs (3 and 4) that secure it to a bracket mounted to the underside of the front passenger seat.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.