When Monitored:
WARNING: This page is about a different car, the 2012 Jeep Wrangler. However, it is still accessible from the selected car via links, so may be relevant.
Continuously when the ignition is on.
Battery voltage between 10 and 16 volts.
Ignition Off Draw (IOD) fused installed.
Totally Integrated Power Module (TIPM) is configured correctly.