Here's the content from the owner's manual - page 227. It is not indicated as "If Equipped" as other items are.
Trailer Tire Pressure Monitoring System (TTPMS)
The Trailer Tire Pressure Monitoring System (TTPMS) is a feature that will display the trailer tire pressure values and warn the driver of a low trailer tire pressure, based on the drivers set target tire pressure value, through the Instrument Cluster (IC). The TTPMS monitors the pressure of each tire and warns the driver, through the IC, when either a low tire pressure condition or a TPM sensor or system malfunction condition exists. The IC will display the actual tire pressure or dashes for each of the trailer tires in the correct trailer position, based on trailer configuration.
The TTPMS consist of the following components:
• Trailer Receiver Module
• Trailer Interface Module
• Two to twelve tire pressure monitoring sensors depending on trailer configuration
The TTPMS is configured through the trailer settings menu in the Uconnect system by selecting the desired trailer number (up to four trailers can be configured), the number of axles (1 - 3), the number of trailer tires (2, 4, 6, 8, or 12), and the set trailer tire pressure. Refer to “Uconnect Settings” in “Multimedia” for further information.