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ESS battery dead

viper88

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Brand new batteries can be damaged so they might never be 100% by being discharged and sitting. I believe many brand new batteries are damaged before being bought. Think about how many times you see dealers jumping brand new cars. This is not a problem unique to FCA. All brands can have this problem. Having ESS does seem to be a weak link with FCA products?

Some JLs sit around a lot longer then others before being purchased and delivered. They get jumped and start so they evan be moved but never run long enough to fully charge the batteries.

It's the luck of the draw for customers. Thousands of Wranglers sit at the factory after production if there are defects. They sit in huge lots waiting to be repaired. It's not uncommon to have to jump them to move them around because batteries are drained. Then the JLs sit again waiting to be loaded on to trucks for delivery to dealers. Depending on what part of the country they get shipped to, some sit again waiting to be transferred on to another rail and/or truck in yards before being delivered to dealers.

They sit even more on dealer lots waiting to be bought. Average inventory or dealer supply is 90-120 days. Thats in a normal healthy economy. Think about that when you see a left over unsold car or truck on a dealer lot. How long has that brand-new left over 2018 or 2019 been sitting? Another reason to order a new JL. You know it was not sitting on a dealer lot forever.

Some damaged batteries can be repaired if they are hooked up to a good battery charger-conditioner-maintainer. There area lot of brands and you can get one for less then $50. I always hook my cars up to one if they are not used for a couple of weeks. It's cheap insurance to ensure your car starts when you need it to. It's a lot healthier for the battery long term also.
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viper88

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I parked my Jeep for 4 months over winter. Started just fine, everything works just fine. Never put a charger on it.
18 Rubicon 2.0

P.S. as a matter of fact, I drained the battery even more by having lights on, ignition on, etc, while installing mods and stuff.
eTorque equipped JLs do not seem to have the same problem. Your 2.0 does not have the same ESS aux battery as ESS equipped JLs.
 

viper88

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Thanks for the warning. I guess I will have to make sure I park with the front out before my vacation so I can boost the Jeep if needed. I do not like that twin screwed up battery set up at all. What a nuisance .
Or just get a $40-$50 smart battery charger/maintainer.

You can jump a battery that does not have enough power to start engine but the battery has been damaged by then.
 

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dalema

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Bring it in. Owners have had both batteries replaced.
Yep - they fixed it overnight - great service!

they tested and confirmed the second battery was dead - not capable of a charge
 
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dalema

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Brand new batteries can be damaged so they might never 100% by being discharged and sitting. I believe many brand new batteries are damaged before being bought. Think about how many times you see dealers jumping brand new cars. This is not a problem unique to FCA. All brands can have this problem. Having ESS does seem to be a weak link with FCA products?

Some JLs sit around a lot longer then others before being purchased and delivered. They get jumped and start so they evan be moved but never run long enough to fully charge the batteries.

It's the luck of the draw for customers. Thousands of Wranglers sit at the factory after production if there are defects. They sit in huge lots waiting to be repaired. It's not uncommon to have to jump them to move them around because batteries are drained. Then the JLs sit again waiting to be loaded on to trucks for delivery to dealers. Depending on what part of the country they get shipped to, some sit again waiting to be transferred on to another rail and/or truck in yards before being delivered to dealers.

They sit even more on dealer lots waiting to be bought. Average inventory or dealer supply is 90-120 days. Thats in a normal healthy economy. Think about that when you see a left over unsold car or truck on a dealer lot. How long has that brand-new left over 2018 or 2019 been sitting? Another reason to order a new JL. You know it was not sitting on a dealer lot forever.

Some damaged batteries can be repaired if they are hooked up to a good battery charger-conditioner-maintainer. There area lot of brands and you can get one for less then $50. I always hook my cars up to one if they are not used for a couple of weeks. It's cheap insurance to ensure your car starts when you need it to.
Agreed on your points. Mine was a factory order that made its way swiftly to me - it amazed me how quickly it went from order, to built and then delivered (yes I’m one of those people who followed it along the way).
 

viper88

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Agreed on your points. Mine was a factory order that made its way swiftly to me - it amazed me how quickly it went from order, to built and then delivered (yes I’m one of those people who followed it along the way).
Some of us were very lucky with order times. I ordered my '19 JLR in Feb of 2019. It took less then 2 weeks from the day I ordered to the day I picked it up at the dealer. I think it was at the dealer on day 11 after ordering? I could not pick it up for a couple of days. I picked up on day 13 or something. Really unbelievable when everything lines up with logistics.
 

Jeff1

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That settles it. While I've not put on a ton of miles (just under 9k), I've regularly driven my 18 JLUR several times a week. Last week I noticed my ESS giving me the Not Ready notification, yet I've have had zero problems with starting. I do have the factory big alternator (tow package) and I am charging at between 13.9 and 14.1v whenever I'm driving. I'm going to bring it in for a checkup, just in case!
I'm in the same boat as you, I don't put a lot of miles on mine and my light came on Saturday morning. Sunday it was fine. Please post what the dealer says.
 

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Or just get a $40-$50 smart battery charger/maintainer.

You can jump a battery that does not have enough power to start engine but the battery has been damaged by then.

Damaged? Can you explain why the battery would be damaged ? Thanks.
 

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UtahDirt

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If my vehicle won't start after 5 - 7 weeks of being parked in the garage and I know the battery is not older than 3 - 4 years then there is some underling fundamental problem with the electrical system of that rig and I will get it properly fixed
RTFM ;)
STORING THE VEHICLE
If you are storing your vehicle for more than 21 days, we recommend that you take the following steps to minimize the drain on your vehicle’s battery:
• Disconnect the negative cable from battery.
 

viper88

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Damaged? Can you explain why the battery would be damaged ? Thanks.
A quote from a source much better at explaining it then me.

"Excessively draining a battery, or leaving it in a state of discharge, will allow the soft lead sulfate to crystallize. At that point, charging the battery will still cause some of the sulfation to reverse, but any crystallized lead sulfate will remain on the plates. This sulfate cannot, under normal circumstances, return to a solution in the electrolyte, which permanently reduces the available output of the battery.

The other detrimental effect of allowing crystallized lead sulfate to form is that it effectively shortens the lifespan of the battery in an empirically measurable way. If too much of this crystallization is allowed to occur, the battery will no longer be able to provide enough amperage to start the engine, and it will have to be replaced."
 

viper88

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RTFM ;)
STORING THE VEHICLE
If you are storing your vehicle for more than 21 days, we recommend that you take the following steps to minimize the drain on your vehicle’s battery:
• Disconnect the negative cable from battery.
It's what we used to do before all of the smart chargers. That was a long time ago. lol. A $40-$50 smart charger / maintainer is cheap insurance.
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