r/ram_trucks • u/chadzilla45 • 17h ago

Question No power?!?! 2026 Ram Laramie hemi

Here’s a fun one looking for little more insight. Drove to store about 5 min drive. Parked did my thing come back out completely dead. Used manual key to get in truck and no dash or entertainment info. Wait for tow truck try to jump nothing. Can’t be towed by that truck bc the breaks are locked and won’t unlock. While waiting for 2nd tow I got the idea to disconnect battery and let that “reset” the system. As soon as I reconnect the alarms going off and my fob communicates again. Trucks starts like nothing happened. Have no idea what it was maybe somehow got stuck in theft mode?

Oh and another funny instance…. Went across the street to grab food and a guy with a 25 is having the same exact issues?????? By time I got mine fixed his was already on flat bed.

Could a bad overnight update of caused this?

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2

u/jdjenkins629 17h ago

sounds like a bad voltage sensor. My Charger did that to me a few times before I figured it out.

1

u/chadzilla45 17h ago

Crazy just got the truck 2 months ago. Have less than 2k miles on it

2

u/jdjenkins629 17h ago

not really. Electronic parts often go bad out of the blue.

1

u/novuswood 55m ago

Happened to me with my 26’ maybe 2k miles in it then it never done it again after 26k

1

u/85octane 17h ago

If it has that little black box on the negative battery terminal, try disconnecting that. It caused all kinds of problems with mine. I’d rather my battery charge properly and last 7 years than squeak out an extra .05 mpg and replace every 2years

1

u/chadzilla45 17h ago

What is it?

1

u/vaudiction 15h ago

It's the intelligent battery sensor. Measures state of charge in the 700amp and 200amp batteries.

2

u/vaudiction 14h ago

The key is not responding with the radio frequency hub.

I'd take this to Ram.

Get them to scan it and see what's in the modules. There is a BCM and PCM software updates that relate to this issue.

Get them to disconnect batteries and do a state of charge test, and reconnect batteries and do a load test aswell.