Hey guys, I have a 21 F-250 deisel. Tried stating this morning and a bunch of dingers started going on and won't let truck start. Hill descent, cross traffic, engine coolant reading at -76, hill start assist, pre collision, advance track. Anyone know what would be causing this? thanks!

 

Bad batteries?

 

Batteries were replaced yesterday.

 

Did it do this before the replacement?

 

I suppose I should have given that info. Yes this happened yesterday as well. It started later on in the day and I then replaced the batteries thinking they were getting old. (They were original)
today now it is not starting at all

 

This seems like a battery problem, still.

Check all 4 of the connections, make sure they are good.

I would load test the batteries as well, make sure both are fully charged and healthy.

Did you have a lightning storm recently?

 

Got this figured out after a few hours. The fuse terminal for the ecm is bad. The fuse itself was not blown. I jumped a wire from the drivers side of the fuse to the positive battery terminal to turn on the ecm. Truck fired right up. Will need to replace that fuse box now.

 

Nice work!