Auto stop disable

[Gvsukids]

Frankly, if I had so much hatred of the ESS (and didn't mind giving up a few mpg and didn't care about emissions at all), I'd disable it "properly".

How about https://www.jlwranglerforums.com/forum/threads/jumperless-aux-battery-bypass.95945/

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[Blizzard]

I hate this feature. I know that I can use the button on the dash but it resets every start. I am fairly certain that there is a way to permanently disable it. I guess my bigger question is, should I? I mean it annoys TF outta me, but maybe I should get used to it? To me it seems to be extra wear and tear on all the starter parts. Thoughts?

bought a plug in module and never worried about it again, it is just always off. you'll get enough grey beards on here telling you this or that or engine tests or whatever.. like you i didn't like it and for less than a hundred bucks and 20 mins to install i no longer have to worry about it.

 

[Elff]

by itself, it’s not the cause of the auxiliary battery failure.

But isn't it the reason why we have a second battery, the ESS?

 

[ShadowsPapa]

But isn't it the reason why we have a second battery, the ESS?

Yes, but look at it this way - if it's raining it must be cloudy != if it's cloudy it must be raining.

You have the aux battery to operate the electronics during an ESS event, but the ESS isn't the cause of the batteries going bad or not being charged.

Aux battery used for ESS, but ESS isn't destroying batteries.

So if you use a circuit to shut off ESS at every start the aux battery isn't needed.

 

[Elff]

True, but it's a crappy setup and has resulted in their being an overly high amount of battery failures compared to systems that do not have a second battery.

 

[ShadowsPapa]

True, but it's a crappy setup and has resulted in their being an overly high amount of battery failures compared to systems that do not have a second battery.

It's likely the Jeep implementation. I've posted before where Volvo, Chevy (Malibu) and other cars and trucks have used this setup with two batteries, one that handles the electronics and cabin, the other a crank battery.
So it's either the batteries themselves, or how they are handled (including the parasitic drain while sitting)

 

[ChrisNLA]

After having my truck for two months, I have almost fully trained myself to just press the button. Sometimes I forget and the truck shuts off at a stop sign somewhere. Personally, I find it to be very noticeable when the engine shuts off and them starts back up. At any rate - it's there for a reason and was engineered to work - so I just press the 'free' button they provided for picky overly sensitive people like me ?

 

[Rat]

Just spend $99 for the Autostop Eliminator. It took about 15 minutes to install and you never have to push the button again. Put it in my Gladiator diesel last year and couldn't be happier.

 

[Lunentucker]

How about https://www.jlwranglerforums.com/forum/threads/jumperless-aux-battery-bypass.95945/

This

 

[Jteakus]

What are the real-world numbers for MPG increases per tank when using the ESS?

 

[Mr._Bill]

What are the real-world numbers for MPG increases per tank when using the ESS?

There really are not any, since it varies for the particular driving situation of each vehicle. If you dig through the EPA documents, you can probably find the numbers they use. The current incarnation of ESS on these vehicles is being used to get overall Fleet MPG credits from the EPA so they can continue the production of these gas guzzling vehicles.

 

[Jteakus]

I don’t feel like 24-28 mpg in a Jt should be considered “gas (diesel) guzzling”. I do have my ESS “off” in both my JTRD and JLRD. I can’t wrap my mind around how the extra stop/start cycles can’t wear items quicker than not using it. Some here say it doesn’t due to improvements base on starter design etc. I may reactivate in wife’s JL and give a report on mpg increase then we will have an idea.

 

[Jteakus]

Here we go, the past week’s average. I turned the ESS back on. I will fill the tank today and report back next Sunday.

 

[GrubbyBaja]

What are the real-world numbers for MPG increases per tank when using the ESS?

Depends greatly on driving profile. I live in a rural area and my "city" driving occurs in small towns with very little traffic. Stopping at a traffic light rarely lasts more than 10-15 seconds. So in my case, based on my driving profile, I would estimate I have saved approximately 2 ounces of fuel over my 26,000 miles. Also, if I pull up to a light and I know it is getting ready to change...I just keep my foot on the clutch which keeps the ASS from activating .

 

[ShadowsPapa]

What are the real-world numbers for MPG increases per tank when using the ESS?

Edmonds and another said "7 - 10%" of course it depends on the driver and location, but they did real testing. Another outfit tested multiple vehicles over the same courses and of course, got different numbers but still found a definite increase.
That's not the EPA talking, that's independent testers trying to either disprove the EPA, or prove it.
All of the testing I've read about showed increases, and most were indeed around the 7-10% range.

Here we go, the past week’s average. I turned the ESS back on. I will fill the tank today and report back next Sunday.

LOL - that's not how it works. You can see a change based on air temperature, humidity and other factors. The testing done was within very scientific standards - keeping all outside influences as close to the same as possible given it was being done on real streets with real lights and real traffic.

I can say that my wife and I both are quite observant of MPG and we've both noted gains when ESS is working compared to when not - and that's over a period of weeks or months. Not comparing this tank to that tank.
You are going to make different trips under different conditions over different streets.
My wife generally drives the same routes each time, she uses her Jeep for very limited specific reasons, almost always to the same destinations and back. She's a creature of habit on those ways.

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