Jeep Gladiator electrical gremlins

[bobfriesenhahn]

well hell, you're the vehicle wiring engineer by trade for 30+ years for the Big 3, you tell us lol

I have deep concerns about our collective future when someone with so much experience and skills gleaned from 30 years+ at the big 3 finds a need to come to this forum to find answers.

 

[HighwayTrout]

@HighwayTrout, why do you think I need to replace my main battery again when its 6 months old and it checked out fine on load test and shows 12.7+ volts after being fully charged by a AGM slow trickle battery charger? Also, if you have any comments on why you think the aux battery needs to be the equation, I'd appreciate to hear that as well.

I value everyone's input, but I'm not just gonna blindly follow somebody that says I need to have both batteries replaced in the truck with a main battery that tested well and without a technical explanation on why.

Sooo.
Batteries-
unfortunately new batteries these days and their components have significantly gone down in quality compared to 10-15 years ago. A six month old battery does not surprise me that all of a sudden displays problems. And like was mentioned earlier. Just cause a volt meter is reading “okay” does not indicate a cell or component inside the battery is failing.

-Why replacing batteries without technical explanation.
I will flip that back to you. Why would you remove the aux battery just cause someone on the internet said so?
And from personal experience. I had electrical gremlins with my last Jeep and played the entire gamut of battery mumbo jumbo. After all the bullshit and configurations. Guess what resolved everything? Replacing both batteries with new ones from the dealership. Even after replacing the main battery a few months prior. What your describing was exactly what I went through.

-30 years experience.
Not to discredit your experience or knowledge and I agree you are kinda on the right track. However your training and experience is based off of 50 year old technology. Why on earth would you experiment by removing electrical components on a 60,000+ dollar vehicle and not want to try just replacing the easiest and cheapest thing. A pair of batteries.

Also.
Added benefit is if nothing changes you can come back and say that I’m wrong and feel good about yourself.