Bad battery already??

[hiilong]

Mine is also 2021 but just a JL Sport with 28k miles...I'm supposed to drop it off at the dealership so they can give me a proper diagnostic and work on it.
I'm still under warranty until Sep this year. I hope they can fix it under warranty and not charge me. I'll keep you updated just in case. Not sure if this is because of the extra battery my car has?

@SouthernJL @Gabriela1179

Mine didn’t have that issue particularly, but I had other electrical issues. My ESS Stop/Start would just constantly say it’s “Not Ready”, or “Not Ready Battery Charging”. I recently learned that that a bad battery can cause other weird electrical issues, and I’m wondering if that’s why my Blind Spot Sensors would temporarily go out while I’m driving, and it will work again the next time I start the car.

Digging through this forum, I’ve been seeing a list of posts about how the manufacturer’s battery are poor quality, and they go seem to go bad really fast. Many suggest that you’re better off buying aftermarket batteries . That’s what I ended up doing, bought a couple of Duralast batteries from Autozone and replaced it myself. But you’re both still within warranty so you might as well take advantage of that.

Sponsored

 

[rocksarntpeople]

I noticed something similar when I was scrolling through the MFI that my '22 diesel consistently says "Start/Stop Not Ready. Battery Charging." It also hasn't actually activated the ESS for a few months now, Im guessing due to this message being hidden in the background somewhere. I plan on mentioning it the next time its in for service, however they didn't catch it (and neither did I apparently) the last time it was in service in December so YMMV I guess

 

[SouthernJL]

Mine is also 2021 but just a JL Sport with 28k miles...I'm supposed to drop it off at the dealership so they can give me a proper diagnostic and work on it.
I'm still under warranty until Sep this year. I hope they can fix it under warranty and not charge me. I'll keep you updated just in case. Not sure if this is because of the extra battery my car has?

I hadn't driven the Jeep for about a week. Cranked it and saw that Aux was disabled due to battery charging. It went away after a few minutes and never returned. This was about a month or so ago.

 

[hiilong]

I noticed something similar when I was scrolling through the MFI that my '22 diesel consistently says "Start/Stop Not Ready. Battery Charging." It also hasn't actually activated the ESS for a few months now, Im guessing due to this message being hidden in the background somewhere. I plan on mentioning it the next time its in for service, however they didn't catch it (and neither did I apparently) the last time it was in service in December so YMMV I guess

Yeah. That’s a good indication that your auxiliary battery is bad. And everyone seems to recommend to replace both batteries because if one battery goes bad then there is likely a parasitic draw from the other battery. Both of my batteries were bad, and after replacing both of my batteries, things are working fine again.

 

[rocksarntpeople]

Yeah I will see what they say when it goes in for service. Is there anything specifically I should mention to get them to properly look at the system? Seems to be kind of a dice roll weather or not they'll actually look at something correctly haha

 

[hiilong]

Yeah I will see what they say when it goes in for service. Is there anything specifically I should mention to get them to properly look at the system? Seems to be kind of a dice roll weather or not they'll actually look at something correctly haha

I just went in and told them that my ESS stopped working, and they ran a GR8 test against the batteries. You can mention to them about the GR8 test.

 

[Yawnie'sPapa]

I just went in and told them that my ESS stopped working, and they ran a GR8 test against the batteries. You can mention to them about the GR8 test.

That's the FCA REQUIRED battery test. A dealership must use that test to determine if a battery is bad for warranty replacement.
It's fairly involved, and the battery must be above a certain level before they can proceed so don't go in and expect them to be done in 60 minutes. If it's not up to that percentage of charge, they must charge it first. And doing two batteries could take longer.

I hadn't driven the Jeep for about a week. Cranked it and saw that Aux was disabled due to battery charging. It went away after a few minutes and never returned. This was about a month or so ago.

Infrequent driving is one reason people have problems with these. There's a fair parasitic drain on some models. And driving it for 30 minutes will not charge the batteries back up. That's a lot of capacity to recharge and alternators are not battery chargers - they maintain as you drive and top them off.

I resolved issues with my 2020 by pulling the IBS off, setting it aside, then -
Charge the aux battery alone using a good AGM capable charger (not the cheap 2 amp maintainers they call chargers sold on Amazon)
Charger the main battery using the same AGM capable battery charger - this may take hours so be patient - correctly charging an AGM battery goes through 4 phases and the last 10-15% takes a lot longer than the first 80 percent.
A 2 or 5 amp maintainer isn't a full battery charger - go at least 10 or better yet, a 20 amp charger.
When done, connect everything back up.
The above resets the IBS and starts it over again on fully charged batteries.
It's also an opportunity to see that each battery will take a charge - and hold it while you charge the other battery. (I check the battery voltage after charging, then a few hours later to see if a disconnected battery is holding that charge)
The above got the ESS in my 2020 JT working again.
Batteries were not great, but were fine 3 months later when I traded it.
If your Jeep sits a lot or you do almost all short drives (30 minutes or less) you may need a battery maintainer.

 

[sjappers]

Mine is also 2021 but just a JL Sport with 28k miles...I'm supposed to drop it off at the dealership so they can give me a proper diagnostic and work on it.
I'm still under warranty until Sep this year. I hope they can fix it under warranty and not charge me. I'll keep you updated just in case. Not sure if this is because of the extra battery my car has?

So what did you find out? I also am gettign this same Aux switches Temporarily Unavailable Battery Charging ...I am wondering if its jsut something normal with the latest updates?

 

[The Last Cowboy]

That's the FCA REQUIRED battery test. A dealership must use that test to determine if a battery is bad for warranty replacement.
It's fairly involved, and the battery must be above a certain level before they can proceed so don't go in and expect them to be done in 60 minutes. If it's not up to that percentage of charge, they must charge it first. And doing two batteries could take longer.



Infrequent driving is one reason people have problems with these. There's a fair parasitic drain on some models. And driving it for 30 minutes will not charge the batteries back up. That's a lot of capacity to recharge and alternators are not battery chargers - they maintain as you drive and top them off.

I resolved issues with my 2020 by pulling the IBS off, setting it aside, then -
Charge the aux battery alone using a good AGM capable charger (not the cheap 2 amp maintainers they call chargers sold on Amazon)
Charger the main battery using the same AGM capable battery charger - this may take hours so be patient - correctly charging an AGM battery goes through 4 phases and the last 10-15% takes a lot longer than the first 80 percent.
A 2 or 5 amp maintainer isn't a full battery charger - go at least 10 or better yet, a 20 amp charger.
When done, connect everything back up.
The above resets the IBS and starts it over again on fully charged batteries.
It's also an opportunity to see that each battery will take a charge - and hold it while you charge the other battery. (I check the battery voltage after charging, then a few hours later to see if a disconnected battery is holding that charge)
The above got the ESS in my 2020 JT working again.
Batteries were not great, but were fine 3 months later when I traded it.
If your Jeep sits a lot or you do almost all short drives (30 minutes or less) you may need a battery maintainer.

This is why I just bought new batteries and did mine myself. Yeah, it cost $300. But I know that I got 2 brand new, fresh batteries. I bench charged them to 100% before installing, and I was done in a couple hours.

The other option is to make a dealer appointment, who knows how many weeks out. Then you drop it off, as the appointment only secures you a place in line. A few days later they call you to go back to the dealer to pick it up. They may have changed only one, or just charged them. If you got one or two new ones, they will be Mopar units with an unknown amount of time in storage.

 

[Gabriela1179]

So what did you find out? I also am gettign this same Aux switches Temporarily Unavailable Battery Charging ...I am wondering if its jsut something normal with the latest updates?

Im still trying to find a day when I can leave the car at the dealership. They said it would take most of the day so i would have to drop it off. I’ll make sure to give you an update as soon as I do this!

 

[Gabriela1179]

So what did you find out? I also am gettign this same Aux switches Temporarily Unavailable Battery Charging ...I am wondering if its jsut something normal with the latest updates?

They ended up replacing the battery and the radio because the light would go down every time i turned on the wipers….and to make things worse; i experienced my first DW in the fwy and the dealer said they have to replace the steering damper which might take months to arrive because its on back order and I’ll just have to drive the car as is.

Sponsored