Strike Four, You're OUT

[Apexcars]

Isn't it still considered a band-aid if there's a risk of having a warranty claim denied as a result of partially rewiring the electrical system.

Is adding a lift kit, re-gearing for bigger tires, putting in heavy duty axles, etc. considered to be a band-aid for rock crawling? Is putting in the Mopar LCAs considered a band aid for better steering. I call all of those things fixes. Unless they can show that your battery delete caused the problem, they can’t legally deny the warranty claim. They can make it more difficult but ultimately the law is on the side of the consumer on that.

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[Ratbert]

My comment was based on this battery parasitic drain problem being industry wide, not just Jeep. IMHO, 90 percent of the computers in these vehicles shouldn’t be there, and what remains shouldn’t drain the battery when parked. Unfortunately, that is not the world we live in.

Interesting. I've never owned a vehicle where parasitic battery drain was an issue. Even with my JLURD that sits for a week or two at a time.

 

[Heimkehr]

I have always heard that only stops of around 40 seconds or more give you any gas savings.

Fuel savings begins to occur after an average of 7 seconds, when comparing an idling engine to one that shuts down via an ESS function after the vehicle comes to a complete stop.

I keep ESS turned off via a defeat harness because I've the engine's long-term health in mind. Fractional reductions in fuel consumption never came to mind.

 

[Just Jed]

I have a ‘21 JLUR 3.6 auto E-torque. Couldn’t get it any other way. I’m now glad it came like that, it pops off the line, and the ESS is really seamless, and transparent and uses the BSG to restart. Fun to play with. even though we don’t buy Jeeps for fuel mileage, neat to hear that it works after 7 seconds. Maybe more important to me is that I’m not polluting while sitting at a light. I’d much rather breath around the exhaust of an engine that’s not running, and I’m an auto shop/gearhead major. Also, no AUX battery issues, and we’ll see about 48v batt issues in time…I did get an extended warranty!???.

 

[Dusty Dude]

Interesting. I've never owned a vehicle where parasitic battery drain was an issue. Even with my JLURD that sits for a week or two at a time.

My Challenger had a “transport” fuse to deal with the parasitic draw. It was installed by Chrysler because they didn’t know how long a car would sit in a lot waiting to go to a dealer. It killed everything except the dome light and the ignition switch.

I have been wondering if they have this same thing in our Jeeps. It would make sense otherwise there would be a lot of dead batteries to be dealt with when the time came to deliver one to a dealer.

 

[Wylie E. Coyote]

So easily fixed. To bad you just didn't bylass the aux battery (like most of us have). Took me five minutes, and I'm not that handy.

I'm new to this but following! How do you do that? I may be proactive before my Jeep fails!

 

[Oakridge88]

I installed a 2023 Wrangler JL Aurostop Eliminator and I am wondering if that has an effect on the AUX Battery problems. Can it still appear down the road?

 

[Heimkehr]

I installed a 2023 Wrangler JL Aurostop Eliminator and I am wondering if that has an effect on the AUX Battery problems. Can it still appear down the road?

By way of example, I installed this harness exactly one week after taking delivery of my new JLU. But for testing the ESS function 1-2x annually, it's remained off since late 2020.

3 years and 5 months later, ESS continues to function as new when tested. I've not observed any charging system warnings on the dashboard, nor has there been any reduction in the quality of cold starts via the original, main battery.

A data point of one, but hopefully it provides a bit of context here.

 

[thestein13]

Agree to disagree, haven’t had any battery issues since bypassing aux for almost 3 years now. I’d rather do that than have a motorcycle battery that lasts less than a year and ends up draining the main. If it works that long without using an aux, that is a fix in my book.

The system Jeep put in place is ?. Many other vehicles do not use a two battery method and do just fine. Their “fix” is to check the battery voltage and or replace the battery and hope for the best. When Jeep “fixes” their own system, I’ll reconsider.

What is the point of taking it to the same dealership to have them continue implementing the same “fix” if it doesn’t work. Then, to throw your hat in and say you’re done without having another mechanic or someone more Mechanically inclined check it out.

I couldn’t care less about a warranty or saving money if it means not having dumbasses touch under the hood of my vehicle.

Calm down, Punkn.

 

[Punkn89]

Calm down, Punkn.

 

[Hookr26]

Current issue..Ok, 50k on 2021 jlu Rubicon 3.0 Diesel. Till then not one issue with ESS. @10-12k, added a winch, set of two lights, midland radio, and Redarc trailer brake controller. No issues till now except a full transmission replacement at 45k.

What happened:
Main battery went dead. Read many posts. Decided to replace main battery with Costco H7, and do the aux delete where you hook the aux + to other +, aux - to other - on the main battery. Pulled the appropriate fuse.

Well 3 days later main battery dead again. Purchased an AGM charger.

Put back in, same thing 4 days later.
So this time I disconnected the aux + and taped it all up. Left the negative all one. Charged the new main all up again.

Same thing 3 or 4 days.

Ok, give up go purchase a replacement aux (the little bit bigger one) hook it all up as manufactured, After charging my costco main all back up.

Again, made 3-4 days. I found a relay on my lights may have broke and was shorting/drawing power away. Using jeep aux switch just to power the relay on the supplied flood lights wiring harness.

Pulled, taped up, looked good. Charged it all back up again thinking maybe I'd found the draw and be done with it.

Nope 4 more days and same place. Again. So this time I pull my winch +, my midland +, my lights +, Charged it all up again. I'm on day 3. I'll try it again tomorrow to see if that fixed it.

Was thinking of taking my new Costco (interstate) battery back in for load testing.

When it's discharged since the new battery: I get in. The jeep doesn't start when I git the button, then looks like an interior light show (dash) till I pull the neg off the battery. It doesn't even think about turning over the engine.

Quick question? Do I have to charge both batteries back up separately Before trying again?

I've only been charging the primary back up. Usually most part of a Saturday from red to green.

Any ideas are appreciated.

 

[Hookr26]

Current issue..Ok, 50k on 2021 jlu Rubicon 3.0 Diesel. Till then not one issue with ESS. @10-12k, added a winch, set of two lights, midland radio, and Redarc trailer brake controller. No issues till now except a full transmission replacement at 45k.

What happened:
Main battery went dead. Read many posts. Decided to replace main battery with Costco H7, and do the aux delete where you hook the aux + to other +, aux - to other - on the main battery. Pulled the appropriate fuse.

Well 3 days later main battery dead again. Purchased an AGM charger.

Put back in, same thing 4 days later.
So this time I disconnected the aux + and taped it all up. Left the negative all one. Charged the new main all up again.

Same thing 3 or 4 days.

Ok, give up go purchase a replacement aux (the little bit bigger one) hook it all up as manufactured, After charging my costco main all back up.

Again, made 3-4 days. I found a relay on my lights may have broke and was shorting/drawing power away. Using jeep aux switch just to power the relay on the supplied flood lights wiring harness.

Pulled, taped up, looked good. Charged it all back up again thinking maybe I'd found the draw and be done with it.

Nope 4 more days and same place. Again. So this time I pull my winch +, my midland +, my lights +, Charged it all up again. I'm on day 3. I'll try it again tomorrow to see if that fixed it.

Was thinking of taking my new Costco (interstate) battery back in for load testing.

When it's discharged since the new battery: I get in. The jeep doesn't start when I git the button, then looks like an interior light show (dash) till I pull the neg off the battery. It doesn't even think about turning over the engine.

Quick question? Do I have to charge both batteries back up separately Before trying again?

I've only been charging the primary back up. Usually most part of a Saturday from red to green.

Any ideas are appreciated.

3/23. So I let my jeep sit since last weekends charge after I pulled the positive wires from my set of lights, first radio, and my winch.

Tonight I threw a volt meter on the battery and got a 12.35. This was very promising. Jeep sat all week with me touching it. Hit remote start and woohoo she fired right up. So I'm praising God. Took it for a 30 min one way to get a DQ blizzard for the wife and I. The Ess worked several times. So I sure hope I've at least removed the problem. Now how to 1 device at a time get these items back powered and not experience (or cause) the draw that cost me two batteries to start with. I'm going to start by finding a direct switch for the winch positive. Any suggestions.

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