Totally dead…momentarily

[TomApple]

Had something weird happen last night. 2019 2500 6.4. Just completed a 300 mile drive, towing a small cargo trailer. Backed trailer into the driveway and shut the truck down. Got out, went inside for a couple of minutes, came back out, opened rear passenger side door and no interior lights. Closed the door, hit lock and unlock on the fob…nothing. Went to drivers door, climb in, it’s dead as a doornail. No power showing anywhere. Unplug my phone from the USB cable to head inside with it and grab a cup of coffee and do some cogitation. Came back outside and thought I probably should manually lock the doors. Open rear passenger side door….interior lights come on, display says push brake to start…like nothing ever happened.

Any ideas?

 

[motorhead426]

Had something weird happen last night. 2019 2500 6.4. Just completed a 300 mile drive, towing a small cargo trailer. Backed trailer into the driveway and shut the truck down. Got out, went inside for a couple of minutes, came back out, opened rear passenger side door and no interior lights. Closed the door, hit lock and unlock on the fob…nothing. Went to drivers door, climb in, it’s dead as a doornail. No power showing anywhere. Unplug my phone from the USB cable to head inside with it and grab a cup of coffee and do some cogitation. Came back outside and thought I probably should manually lock the doors. Open rear passenger side door….interior lights come on, display says push brake to start…like nothing ever happened.

Any ideas?

The first thing I'd check is your battery terminals. Sounds like a loose connection somewhere.

 

[Wholeo]

Make sure all your fuses and relays are fully seated.

 

[TomApple]

The first thing I'd check is your battery terminals. Sounds like a loose connection somewhere.

After checking in the light of day, the negative terminal was loose. Pulled it, scuffed post and terminal with 400 grit and reassembled.