[Phuz]

I have the same issue. Been left dead battery four times now. Truck is in with the dealer almost 2 months.

All I can say is explore whatever options you to be reimbursed or made whole.

Be interested to hear if anybody else has been reimbursed or gotten a settlement either through FCA or other means.

 

[TimF]

My new 1500 night edition with 2,900 miles was cold dead yesterday morning in the Maine North Woods. On Monday we drove 3.5 hours to reach our destination. Less than 20 hours later, I went out to start my truck, and it was dead. Not even a light from anything. I got out my jump kit and tried to jump the truck. I got some dashboard lights, one click when I hit the ignition button, then everything started flickering, and then nothing. I grabbed my generator and a new battery charger. Got the generator running and charger hooked up. The charger said I had 4.4 volts from the AGM battery. I gave it a 30A charge for 30 minutes and brought the voltage up to 4.7 volts. I hit the jump start button on the charger and tried to start the truck. Same results as with my jump kit. Last resort, I had my boat battery in the back of the truck. Fortunately, the post were on the same side, but on the opposite side of the battery. I had to cut a lot of wire ties to get enough slack to hook up the battery. The truck started right up. I tied the battery in place because the battery bracket would not fit. I drove 4 hours home, right to the dealership. I called them on my way home and told them I was on my way. The said they had to keep my truck to run some test on the batteries. This truck has the large AGM battery, and a smaller one between the AGM battery, and the firewall. The little one is called the "stop/start" battery. They called today and said my truck was all set. When I got there, I told them I wanted someone with authority to explain exactly what happened to this $65K truck with less than 3k miles. I had two mechanics and the service manager explain what happened. The "stop/start" battery shorted out. Because of that, it drained down the AGM battery. I could not jump it, because with the "stop/start" battery shorted out, (it is either in parallel or series with the AGM battery) the AGM battery wouldn't take a charge. They said they have had issues with the "stop/start" batteries, but they can't replace them under warranty unless they fail. I asked them how I could get around this issue if it happens again. One of the mechanics said to take the positive lead off the "stop/start" battery, wrap it up tight with a rag (isolate the end of the cable), and then jump start the truck with my jump pack. I am not totally sold on this, but I take my truck off the grid, and AAA is not going to get me. I don't have the time to research the electrical wiring, but does anyone know what the "stop/start" battery does? Does it have something to do with coming to a stop, and the engine shuts off? I hope this helps someone in the same situation I was in. I sold my 2017 Chevy Silverado with a bad transmission, to get myself in a truck I can trust. My trust just went out the window.

 

[jm55]

I had the same issue. The dealer told me the small battery runs all the interior stuff and possibly start button too but he wasn't sure. He said to keep a jumper in the truck to connect positive leads if it has to be jumped

 

[jbarr924]

8K is no guarantee - my "eats the batteries overnight" issue started at just over 8000 miles. Now at 44 days and counting (third visit) in the shop working through detailed troubleshooting with RAM.

While this has been massively irritating, my dealer has gone above and beyond on the troubleshooting. We have a meeting once a week with our service advisor and the service manager to review progress. I am retired, and don't need my truck until boating season starts (which is now only a few weeks away).

What they are seeing is that "something" is causing the truck electronics to "wake up" multiple times a night. Then all the systems stay active for ~ 20 minutes. This happens enough times that the batteries are completely discharged. After some parts "easter egging" they stopped that. Now they are putting the truck on a monitor, pulling one fuse and watching overnight. The hope is to find the device / circuit that is causing the wake up, then figure out why the wake up is happening. At last meeting, they were down to circuits on one main connector, around nine fuses. The "good news" is that my truck has passed the intermittent / occasional stage, reliably eats its batteries nearly every night, so it is a good troubleshooting guinea pig.

sorry to hear about all your issues. I'm over 10K now and the truck is performing absolutely perfect. No issues except they replaced the right mirror under warranty. Best of luck to you.

 

[DesertBoat]

... I don't have the time to research the electrical wiring, but does anyone know what the "stop/start" battery does? Does it have something to do with coming to a stop, and the engine shuts off? ...

I don't believe the small battery would handle start / stop duties.

I also don't know why they have two separate batteries, when the drain pulls both batteries down the same. You would expect that the would be diode isolated.

My recommendation is to carry a good (2000 A +) jump pack. The draw down to 4.4 volts, dealer thinking that a battery change would resolve, matches the beginning of my odyssey.

 

[jm55]

Except when mine died both batteries were toast. Tried a jump but it did nothing

 

[DesertBoat]

Except when mine died both batteries were toast. Tried a jump but it did nothing

If you are having the same battery eating problem I have, the batteries are getting pulled down so far that you need to let the jump pack charge the battery for a little while until you try a start. Or get a larger capacity jump pack.

 

[ramcares]

Hi everyone, we're sorry to hear of your experiences. If anyone is currently experiencing concerns with their vehicle, please send our team a detailed private message so we can offer an extra layer of assistance. We're happy to help!

Diamond
Ram Cares

 

[DesertBoat]

Hi everyone, we're sorry to hear of your experiences. If anyone is currently experiencing concerns with their vehicle, please send our team a detailed private message so we can offer an extra layer of assistance. We're happy to help!

Diamond
Ram Cares

Not sure what else there is to do.

• 25% of time we have owned our 2025 Laramie it has been in the dealer (% increasing daily - 78 days in shop as of today).
• Dealer does not know what is wrong, they get things to try from HQ, one of the "fixes" actually increased the passive draw.
• At this point, every single circuit has been disconnected at least once, passive battery draw exceeding 4 amps does not go away.
• We get twice a week calls from the RAM customer team, telling us the same thing the dealer does - they do not know what is causing the problem, but keep waiting for a fix.
• Is sort of traumatic visiting the dealer and seeing numerous major wiring connectors disconnected, panels laying off.
• Not sure how you trust the truck long-term when everything has been pulled apart trying to find the phantom passive draw.
• Our arbitration date is set for early June.
• This truck needs to go back to Ram engineering so they can figure out what the problem is, and understand if they have a fleet problem.

 

[ramcares]

Thanks for those details. Feel free to send our team a private message along with your case number so we can take a further look into this for you.

Diamond
Ram Cares

 

[olivamealonenow]

Mine is doing the same! 2025 Ram Rebel.

 

[TimF]

Mine is doing the same! 2025 Ram Rebel.

Keep us posted on what happens, and fix (hopefully).

 

[jbarr924]

I bought a 2025 big horn six weeks ago. It's been in the shop for the last three weeks. Same dead battery issues. They are going to replace the alternator now but I don't think that will help. I did notice the start/stop wasn't working a few days after I picked truck up. Maybe realted?

Talk to your dealership about a software update. Good luck.

 

[kdviner70]

2025 Limited SST HO. 1100 miles. Traded in 2019 RAM Limited. Issues to date on new 2025: 1. Passenger window will not go down all the way. 2. Backup camera blue screen of death. 3. Key fob not recognized when in truck and pressing start button. 4. Key fob will not unlock truck. 5. Button on door handle will not unlock truck. 6. Driver side seat position memory quit working. 7. Sirius radio would not come on. 8. Blind spot indicators in BOTH mirrors came on while starting truck. Issues 1-7 were intermittent and currently working okay after Central hub RF module replaced. Issue 8 - one time occurrence (so far) MOPAR says known issue, solution not yet known - working on it. Had I read though this thread before my purchase, would not have bought the truck. That's on me.

 

[TdHawks14]

Well this makes my day. I’ve had my RHO 2.5 days now and won’t sleep a wink tonight. Maybe I should just leave it running all night

 

[DesertBoat]

Now at 90 days in the shop, and counting.

Dealer now is expecting a Stellantis field engineer to look at the issue at some point. None of the tests requested by engineering has come up with a cause for the 4+ amp static battery draw.

Dealer says they now have two Rams and one Grand Cherokee with the "battery eating" problem.

 

[kdviner70]

2025 Limited SST HO. 1100 miles. Traded in 2019 RAM Limited. Issues to date on new 2025: 1. Passenger window will not go down all the way. 2. Backup camera blue screen of death. 3. Key fob not recognized when in truck and pressing start button. 4. Key fob will not unlock truck. 5. Button on door handle will not unlock truck. 6. Driver side seat position memory quit working. 7. Sirius radio would not come on. 8. Blind spot indicators in BOTH mirrors came on while starting truck. Issues 1-7 were intermittent and currently working okay after Central hub RF module replaced. Issue 8 - one time occurrence (so far) MOPAR says known issue, solution not yet known - working on it. Had I read though this thread before my purchase, would not have bought the truck. That's on me.

Blue screen of death back today. Two restarts did not solve. Third restart did engage the backup camera. Back to the dealer next week. Do they have any competent software folks at Stelantis?

 

[DesertBoat]

Blue screen of death back today. Two restarts did not solve. Third restart did engage the backup camera. Back to the dealer next week. Do they have any competent software folks at Stelantis?

Interesting - I more suspect a hardware issue causing the problem. The uConnect software has lots of miles on it.

 

[BDS1776]

Xx

 

[kdviner70]

Wow. 90 days. Did MOPAR.Stelantis do anything to compensate you for the trouble caused?