Cooling system shut down on 2020 Freightliner

Paccar had a batch of bad coolant level sensors, maybe some are still in the supply chain?

 

Can also be the connector to the sensor. Have a rash of Freightliner trucks with that issue

 

Check your transmission fluid while you are checking. That is if you have a water cooled transmission.

 

2019 Freightliner: radiator coolant hose came off and all fluid came out of engine. Engine protection shut off turn the truck off. Is there still a chance Imy engine may be damaged?

 

Also coolant hose came off during regen. What causes this to happen? Truck was running fine until regen. Regen on dash showed full red bar.

 

What causes the hose to come off? Possibly and most likely loose clamp due to improper pre trip or lack of pre/post trip inspections.

Is the engine damaged? Most likely no, but are we 100% certain? No and only a competent mechanic can tell you.

 

When there is a low level of coolant a light and buzzer come on. After 30 seconds the engine will shut off to protect it. So it is unlikely that the engine was damaged. What was the temp gauge reading at time of shutdown? Repair/replace the hose, refill the coolant, and run it.

 

Don’t notice I was resting during regen.