2018 Dodge 2500 6.7ltr diesel Immobilizer triggered by secondary battery failure

[GroundPound]

Okay, so one of my batteries died and was being carried by the other briefly until that one gave out. during the process of problem solving this situation and disconnecting said batteries to replace them my immobilizer was triggered and now having replaced the batteries I can't start the truck. Is there anyway to fix this issue short of taking it into the dealer or having to spend what looks like hundreds of dollars to have the codes wiped and the computer reset? Any help would be absolutely appreciated as I'm to the point of pulling my hair out having tried all the, " quick fix" suggestions, tips, and tricks with no success. I should add it's a keyless start vehicle so no key for that computer reset trick.

 

[Runaround]

I wish someone would answer this because I had my batteries disconnected for a couple of hours Friday and when I reconnected them the immobilizer kicked in on my truck which is also a 2018. The dash has the little red light flashing and shows “push clutch and start button “, but it’s an automatic.

 

[RiverRatJim]

I have a 2016 3500 Laramie, same crap here . Still working on it....... good luck

 

[18CrewDually]

Have you tried unlocking door with key then turn the truck on (don't start) for 10 minutes or so. If you have the push to start button, push the button with the fob when you turn it on. See if that resets the security.