Module, Heated Seat (HSM): Description
WARNING: This page is about a different car, the 2020 Dodge Journey. However, it is still accessible from the selected car via links, so may be relevant.
The Heated Seat Module (HSM) (1), also known 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 heated seats.
The HSM has multiple electrical connector outlets (4) and retaining tabs (2 and 3) that secure it to underside of the driver seat.