When did your battery die?

[Pismo61]

Are both batteries covered under 3/36000 mi.

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[DigitalDiem]

Jeep has 40K miles on it and both batteries still going strong. Even after using a camp fridge for 10 days last year out west. ....now that I've typed this they'll both be dead this morning

 

[VKSheridan]

This is probably a stupid question, but shouldn't the JL be able to start using either battery? I thought both batteries had to die at the same time for the car not to start.

You would think that but when my main battery went belly up, my dash looked like a Christmas tree and there was no cranking. The little auxiliary battery is “supposed” to be the source for cranking but once the big battery frogs out, it’s anybody’s guess if there’s enough control voltage to power the ignition circuit.

 

[TaiMc]

You would think that but when my main battery went belly up, my dash looked like a Christmas tree and there was no cranking. The little auxiliary battery is “supposed” to be the source for cranking but once the big battery frogs out, it’s anybody’s guess if there’s enough control voltage to power the ignition circuit.

SAME! I thought for sure my starter had conked out or something because when I turned the jeep on, the display and everything came on. I was surprised when the jump worked.

 

[TaiMc]

Are both batteries covered under 3/36000 mi.

Good question. I’d assume not, sorta like brake pads aren’t covered, because it varies on how people use their jeeps and where they live and how they drive.

I could be wrong though.

 

[mwilk012]

2018 3.6. Bought it February 2019. Stop/start quit working so I took it in. They replaced the main but didnt replace the aux. They said it just needed a charge and put it back in. Didnt call me, said they were busy. I would have paid to replace it since they had it out. Main lasted 29 months since ownership, aux still going. They also said they'd never heard of the software update TSB to allow it to crank with a dead aux. I'll have to print it and hand it to them.

They probably just lied to you, said they pulled it out and didn’t. That thing is hard to get to.

 

[mwilk012]

Good question. I’d assume not, sorta like brake pads aren’t covered, because it varies on how people use their jeeps and where they live and how they drive.

I could be wrong though.

They are.

 

[VKSheridan]

Are both batteries covered under 3/36000 mi.

Because ESS is used to acquire the emissions certification and ESS won’t work with inadequate batteries, both batteries are covered as are their respective solenoids, controllers and relays.

 

[Paluss]

2018 Rubicon 42,000 miles will be 4 years old in April, my battery needs to be replaced. would not start after sitting for 6 days, charged battery and worked fine for about a week, now its cranking slowly and remote start is not working time for a replacement. I usually get 5-6 years out of batteries...

 

[SIGP2101]

With all this horror stories about dead batteries has anyone think of going back to good old lead acid chemistry? That way no more this AGM BS and batteries dried out prematurely. Sealed LA batteries should give us back those 5 years at least.

 

[Nomod]

36 months, 15,600 miles - originals still 'good'.

 

[Paluss]

2018 Rubicon 42,000 miles will be 4 years old in April, my battery needs to be replaced. would not start after sitting for 6 days, charged battery and worked fine for about a week, now its cranking slowly and remote start is not working time for a replacement. I usually get 5-6 years out of batteries...

So just replace battery with an AGM Die Hard with 4 year warranty, everything is fine now, it did take about 20 minutes of driving before the remote start began working again...

 

[Steph1]

Had both batteries replaced within a year after purchase. Last spring, my Start/stop wasnt working anymore AGAIN since the secondary battery was always charging. Numerous searches lead me to find the solution by installing an engine bay charger with an extension cord routed to outside the jeep (like a block heater power cord). When I know I'll be a few days without using the Jeep, or only very short commutes will be made, I plug it in.

Been working like a champ ever since. AND, since my alternator isnt constently charging the secondary battery as it is always fully charged now, I saw a notable increase in mpg.

 

[cride1]

So I came here because I think I may be having a battery issue but something really weird just happened. It started yesterday when my remote start would not work after setting for 6 or 7 hours. It would honk once and would not start. When I did start it, it kind of started slowly, kind of dragged, turned over a couple more times that normal before starting. Remote start would not work today at lunch time either, but the ESS function worked normally. On my way back from lunch today, setting at a stop light, the light turns green and I start to push the gas and it dies. Don't really recall seeing any kind of message or on the dash or anything. It starts back up and I am able to drive away. Now what is really odd is that I started watching the voltage when remote start would not work. It was setting between 12 and 13 volts typically which I think is low. When ESS restarted it after a stop I saw it dropped down into the 11s. After this episode at the stop light, it is now setting at 14.3 volts continuous... I have not idea what is going on with it.

 

[SavannahAL]

Purchased 20 August 2018 = 39 months and 54,000 miles = still on originals

Although after reading the thread I feel I'm on borrowed time.

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