Anyone find a solution because I’m experiencing the same. The truck starts at 12.9 volts and will not shut down unless I get up and push the stop button. Dealership cleaned batteries terminal and tightened some loose bolts. But I’m still getting the same results. I also noticed that once I push stop, I can go to the back panel and turn on cool and the system still works but the truck will not start once the batteries get low. If I fail asleep, my batteries will be drained. So at night I end up just letting the truck idle. I’m thinking of bypassing the auto start/stop feature with IdleSmart. I then can control how often and how long the truck Idle’s.
Here are the interlocks and general info for when the engine should run and shut down. This is also for LT models. LT's came out in 2017. So if you have a 2019, it is a LT, not a Prostar. Interlocks (Conditions must be met to allow engine cranking) Transmission is in neutral Shifter is in neutral Parking brake is set Clutch is not depressed (for transmissions with clutch pedal) Hood is closed (hood switch) Vehicle Speed is less than 2 mph (3 km/h) Ignition switch is in the OFF position Auto Start Stop switch is turned ON within 30 seconds of key OFF Factory Settings for 0597041 - BCM PROG, AUTO START STOP with Switch Control, with Oil Temperature Sensor With Cummins Engine Starting for Low Voltage Starting for Low Oil Temperature Low voltage threshold is 12.1v After battery voltage is under 12.1v for 30 seconds, the horn will chirp, and the engine will start 5 seconds after the engine starts, the engine speed will increase to 1000rpm Once battery voltage is 12.7v for 70 minutes continuously AND engine oil is 100F, the engine will return to idle The engine will idle for 90 seconds before engine shutdown Low engine oil temp threshold is 50F After engine oil temp is under 50F for 15 minutes, the horn will chirp, and the engine will start 5 seconds after the engine starts, the engine speed will increase to 1000rpm Once engine oil temp is 100F for 1 minute continuously AND battery voltage is 12.7v, the engine will return to idle The engine will idle for 90 seconds before engine shutdown Factory Settings for 0597250 - BCM PROG, AUTO START STOP with Switch Control with International A26 Engines Starting for Low Voltage Starting for Low Temperature Low voltage threshold is 12.1v After battery voltage is under 12.1v for 30 seconds, the horn will chirp, and the engine will start 5 seconds after the engine starts, the engine speed will increase to 1000rpm Once battery voltage is 12.7v for 70 minutes continuously AND engine oil is 150F, the engine will return to idle The engine will idle for 90 seconds before engine shutdown Low temp threshold varies based on the ambient temperature at the time auto start was enabled Time to start decreases at colder ambient temperatures Timers vary from: 7 hours 5.5 hours 4 hours 3 hours 5 seconds after the engine starts, the engine speed will increase to 1000rpm Once engine oil temp is 150F for 1 minute continuously AND battery voltage is 12.7v, the engine will return to idle The engine will idle for 90 seconds before engine shutdown Factory Settings for 0597317 - BCM PROG, AUTO CLIMATE CONTROL for Sleeper with ANY Engine When bunk temperature gets too warm or cold, this feature can request the engine to auto-start to cool or heat the sleeper This is an optional feature (16VKW) that also interacts with the Auto Start-Stop system Starting for High In-Cab Temperature Starting for Low In-Cab Temperature Bunk temperature reaches upper limit (5 degrees above set temperature point) the engine will start and run to cool the sleeper The engine will run for a 20 minutes, to cool the sleeper. The engine will remain off for 15 minutes minimum after it shuts down When ambient temperatures are 90F or hotter, the engine will run continuously to maintain sleeper temperature If ambient temperature falls under 90F, the engine will shut down Bunk temperature reaches lower limit (5 degrees below set temperature point) the engine will start and run to warm the sleeper The engine will run for a 20 minutes, to warm the sleeper. The engine will remain off for 15 minutes minimum after it shuts down When ambient temperatures are 15F or cooler, the engine will run continuously to maintain sleeper temperature If ambient temperature rises above 15F, the engine will shut down So depending on what option you have