Replacing Stock Battery(and Bypassing the Aux Battery) Easiest Solution

[DaltonGang]

The Jeep gets driven a little more now, and everything is functioning flawlessly. ESS is back to its normal annoying self.

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[J0E]

And, no.. you do not need a pricey aftermarket dual battery system. Most guys/gals don't need to go that route. Yes, for some it is a terrific way to go but.. And again, no you do not have to delete the Aux battery... just simply bypass it..

I'm skeptical a dual battery system for ESS is good deal for anyone. I might add a dual battery tray with ESS disabled - so I have double the reserve when winching and drawing 100 amps over the 240 amp output.

 

[RenegadeJeeper]

If I remove and disconnect aux battery does the Aug switches still work?
I.e. only main battery and Aug switches will work?

Cannot find and I cannot use then as dumb message keeps populating auxswitches cannot be used and I am 99% after reading all its the aux battery but don't want to lose aux switches.

 

[jthoms1]

If I remove and disconnect aux battery does the Aug switches still work?
I.e. only main battery and Aug switches will work?

Cannot find and I cannot use then as dumb message keeps populating auxswitches cannot be used and I am 99% after reading all its the aux battery but don't want to lose aux switches.

Someone with a bit more technical acumen can confirm this, but I don’t believe there is any correlation or connection between the aux switches and the aux battery, other than a common part of their name. I don’t think they would slave the aux switches to the aux battery in isolation and I have stalked all the threads about bypassing or removing the aux battery and no one has brought this up as a potential issue.

 

[DaltonGang]

If I remove and disconnect aux battery does the Aug switches still work?
I.e. only main battery and Aug switches will work?

Cannot find and I cannot use then as dumb message keeps populating auxswitches cannot be used and I am 99% after reading all its the aux battery but don't want to lose aux switches.

Don't know. I don't have the Aux Switches on mine. It should power everything, with the Tiny Battery bypassed. Its a simple 5-10 minute fix, and reversible. Try and post results.

 

[Rhinebeck01]

If I remove and disconnect aux battery does the Aug switches still work?
I.e. only main battery and Aug switches will work?

Cannot find and I cannot use then as dumb message keeps populating auxswitches cannot be used and I am 99% after reading all its the aux battery but don't want to lose aux switches.

@RenegadeJeeper

Yes, the Aux switches still work when you run with just the Main battery and the Aux battery bypassed.

 

[RenegadeJeeper]

Well I did this and bad things started happening.1st headlights were flickering, checked battery voltage in info area video attached.
And now I park I n a parking garage and when I went into reverse said autopark engaged and shif to park.
I was rolling into concrete.
Slammed on brakes and park and off.
Then back on and parked.
Have a realllly good feeling main battery is shot then?

 

[myexcursion]

my ESS stopped working about 2 years ago... Battery message in dash always says ' not fully charged for ESS to be enabled ' ... I drove to Florida and back from NY and it still says not charged enough.. who knows ??

 

[RenegadeJeeper]

So thinks I will have a dead battery then ya know 9 hours from now?

Can I just hook up the golf cart battery and start her up?

 

[DaltonGang]

So thinks I will have a dead battery then ya know 9 hours from now?

Can I just hook up the golf cart battery and start her up?

Only if you keep the Golf cart Battery hooked up when you drive. Not like the older cars that would run without a battery, once started.

 

[RenegadeJeeper]

So battery is dying then?

 

[RenegadeJeeper]

Womp qomp dead battery

 

[DaltonGang]

So battery is dying then?

Sounds like it. Easy fix. Replace the main battery, disconnect one wire, and pull one fuse. 10-15 minutes time.

 

[RenegadeJeeper]

I'm dumb. I am keeping the L shaped correct.

 

[Jshwon]

This is an interesting thread and glad I found it. Wife went to bring my son to school this morning and Jeep wouldn't start. 2019 Rubicon with 31k miles. Never had a batter issue until today. Don't know if it's failing or just the cold Denver morning.

Looking to be preemptive and change out the battery and do what's suggested here. Two questions. The EverStart battery is out of stock, anywhere else you can get it or an equivalent? And anything other than ESS (what is that exactly) I should worry about when bypassing the Aux battery?

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