Engine shut down

Probably low the coolant sensor is bad. I had that last winter in Chicago at -6F Low coolant level warning wit engine shutdown, but the coolant was full. I was able to unplug the coolant sensor at the plastic tank. Truck will keep going just fine. The air drier also stopped work when coolant sensor was unplugged on 2020 freightliner. I would try unplug sensor and see if you get warning still. Then get new sensors if that the problem

 

So the truck dies going down the road?
Is there an Override Button on the dash somewhere?
If you press the Override Button before the countdown goes to zero, it will keep the truck running.
Make sure you have plenty of oil and coolant or you could damage the engine.

 

I had this happen. But only in the parked position. I would just step on the the throttle and the messages would go away. I never got a chance to figure out what was the issue. Note: I had replaced the coolant sensor a few months prior to this happening.