2025 Laramie - Battery Discharge > Entire Wire Harness Replacement

[overberg29]

I have a 2025 Laramie that I picked up in November 2024. Build date was May 2024.
Check engine light came on around February 20th.
Scheduled a dealer appointment and the soonest they could get me in was March 13
Went out of town of the weekend of March 1. Went to start it on on March 4. Battery was dead and the dash was going crazy saying everything needed to be serviced. (ABS, Power Steering, 4x4, TCS, etc..)
Had it towed to the dealer.
Dealer says the battery caused the check engine light. They recharged the batteries and all good.
Went to pick it up on March 7, took valet 20 minutes to get my truck. Battery was dead again and had to jump it. Dealer kept the truck.
March 12. Dealer calls, says the junction box where the front and rear wire harness meet is full of water! Wires are shorting out the battery.
March 13. Dealer calls, need to order the entire wire harness. Can't just replace the junction box and re-terminate the wires. They will need the truck for 3 weeks as they need to lift the cab and bed to replace the wire harness.
Dealer give me a loaner Jeep and I have since registered a case with RAM.
I will update this post once I get it back and if any other issues arise.
Anyone else out there have this done to their truck?

 

[Willwork4truck]

Haven't read anything about a complete harness needed... Lots of 25' electrical gremlins and bad batteries, but yours seems to be all on its own. Not that the distinction is very good...

 

[Cygnus A]

I am having a battery drain issue on my 2019.. dead battery so i replaced it. drove 8 hours out of state. next day it was dead so I figured it was the alternator. replaced it and drove home. next day dead again (new battery and new alternator). Now what do I do?

 

[Marine6212]

Here is a video to show you how to Troubleshoot a battery draw.

 

[Go BIRDS!]

I have a 2025 Laramie that I picked up in November 2024. Build date was May 2024.
Check engine light came on around February 20th.
Scheduled a dealer appointment and the soonest they could get me in was March 13
Went out of town of the weekend of March 1. Went to start it on on March 4. Battery was dead and the dash was going crazy saying everything needed to be serviced. (ABS, Power Steering, 4x4, TCS, etc..)
Had it towed to the dealer.
Dealer says the battery caused the check engine light. They recharged the batteries and all good.
Went to pick it up on March 7, took valet 20 minutes to get my truck. Battery was dead again and had to jump it. Dealer kept the truck.
March 12. Dealer calls, says the junction box where the front and rear wire harness meet is full of water! Wires are shorting out the battery.
March 13. Dealer calls, need to order the entire wire harness. Can't just replace the junction box and re-terminate the wires. They will need the truck for 3 weeks as they need to lift the cab and bed to replace the wire harness.
Dealer give me a loaner Jeep and I have since registered a case with RAM.
I will update this post once I get it back and if any other issues arise.
Anyone else out there have this done to their truck?

overberg - I had the same issues. I purchased a 2025 RAM 1500 - Big Horn in July. The Check Engine Light, Cut Outs, Head Lights Shut Off when the vehicle turned over 4,000 miles. Took it to the Dealership several times as they reached for the fix with multiple tries. The dealership did provide me with a Loaner vehicle (Chevy Travers). I started to be undriveable at the end of November and I had to wait to take it in early in December. I took it in on December 2 and they had it for over a Month and they finally replaced the Engine Harness. It's supposed to be fixed, I will pick up up next week on Tuesday (January 13). Let's keep our fingers crossed! I'll keep you posted.