When Monitored
WARNING: This page is about a different car, the 2014 RAM 3500 HD and 2014 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
With the ignition off, fuel level less than 88%, ambient temperature between 4°C and 35°C (40°F and 95°F) and the fuel system in closed loop.