I let my ASS be used for the 1st time...

[FKN Slayer]

I have to say, I am not a fan of it. Not that there is anything wrong with it and if you are pro ASS, more power to you. I actually forgot to hit the button and it took advantage of me. The brief hesitation is what made me realize I had not hit the button. The auto start stop can't possibly save any gas the way that it functions. Plus, the need for the stupidly designed aux battery, that creates additional problems when it dies, is just a bad design. Is there any warranty issue with deleting the aux battery?

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[Mr._Bill]

Since you are modifying the factory electrical system, deleting the AUX battery will result in warranty issues for the electrical system.

 

[Divided_Wood]

I hated it when I first got my JT and thought the people who said "you don't notice it after a while" were dumb. Well, it's been a while and I don't notice it anymore...

 

[ShadowsPapa]

I have to say, I am not a fan of it. Not that there is anything wrong with it and if you are pro ASS, more power to you. I actually forgot to hit the button and it took advantage of me. The brief hesitation is what made me realize I had not hit the button. The auto start stop can't possibly save any gas the way that it functions. Plus, the need for the stupidly designed aux battery, that creates additional problems when it dies, is just a bad design. Is there any warranty issue with deleting the aux battery?

There's proof from independent research showing it DOES save fuel. My wife and I have both found the same. It works. Edmunds says their testing showed 7%-10% fuel savings - the savings obviously depend in the individual driver, the vehicle, but most of all, the driving conditions (city vs. rural, a lot of stops vs. a few and so on)
There have been other tests done by other entities that have proven it DOES save fuel.
Time to research instead of knee-jerk reactions like hate of what's not understood.

Sounds to me, since you mention "hesitation" that you drive as if on a quarter mile track looking for a 0.001 second reaction score.
I've never really felt it was "hesitating" but then I tend to be observant while driving and the engine is running by the time my light is green.

These systems have been around for many years, and have been used by multiple auto makers for as long.
I've never had any negative impact with any of our Jeeps that have this system other than battery issues - but that's not due to the ESS, it's more the batteries themselves, and the lack of tighter control over the aux battery charging methods.

 

[Mr._Bill]

When used at long stop lights, it saves fuel and reduces emissions. I always turn it off since it gets hot here and I like to be as comfortable as possible. When I do forget to turn it off, it works without any issues.

 

[ShadowsPapa]

I hated it when I first got my JT and thought the people who said "you don't notice it after a while" were dumb. Well, it's been a while and I don't notice it anymore...

My wife was the first in our family to have ESS with an earlier Grand Cherokee. She came to me saying something was wrong with her Jeep when it stopped working - she missed it. Well, her Jeeps sit a lot so the batteries get low and her 30-40 minute drives didn't charge things back up. After I did full charges on her batteries - oddly things were just fine from there on.
She asks what's wrong if it ever fails to shut down at a stop light. Often I have to remind her it's 0 degrees out, or she's got the the AC on max on a 95 degree day, or she has the steering wheel turned a few degrees. I showed her how to display the auto stop/start status on her screen and now she's happy.

 

[ShadowsPapa]

When used at long stop lights, it saves fuel and reduces emissions. I always turn it off since it gets hot here and I like to be as comfortable as possible. When I do forget to turn it off, it works without any issues.

It does, plus it allows FCA to keep selling the Jeep models we love. Make it totally go away, so do our Wranglers and Gladiators.

 

[Joe Gladiator]

so are the fuel saving eaten up by replacing the starter and batteries ?

 

[Mr._Bill]

so are the fuel saving eaten up by replacing the starter and batteries ?

The starters are supposed to be designed for the additional use. The batteries should last at least three years. Depending on the use, it may eat up the fuel savings. The ESS system is only there to satisfy EPA regulations so that Jeeps can continue to be sold.

 

[sharpsicle]

so are the fuel saving eaten up by replacing the starter and batteries ?

ESS is not there to save money on fuel. It's there for reducing emissions while stopped by reducing the time an engine runs idle.

 

[Klicht87]

I trust the people smarter than me have designed the system to function for a specific reason with zero negative impacts. I've had start/stop in a few vehicles and my previous etorque ram had it which was a much more smoother transition but it doesn't bother me. I don't get the negativity of this feature...maybe to someone who's never had it and isn't used to the shutting on an off...who knows

 

[TimC]

At least it can be shut off for those who don’t care for it.
Count your blessings I guess.

 

[FKN Slayer]

There's proof from independent research showing it DOES save fuel. My wife and I have both found the same. It works. Edmunds says their testing showed 7%-10% fuel savings - the savings obviously depend in the individual driver, the vehicle, but most of all, the driving conditions (city vs. rural, a lot of stops vs. a few and so on)
There have been other tests done by other entities that have proven it DOES save fuel.
Time to research instead of knee-jerk reactions like hate of what's not understood.

Sounds to me, since you mention "hesitation" that you drive as if on a quarter mile track looking for a 0.001 second reaction score.
I've never really felt it was "hesitating" but then I tend to be observant while driving and the engine is running by the time my light is green.

These systems have been around for many years, and have been used by multiple auto makers for as long.
I've never had any negative impact with any of our Jeeps that have this system other than battery issues - but that's not due to the ESS, it's more the batteries themselves, and the lack of tighter control over the aux battery charging methods.

It actually activated at a 4 way stop. I waved someone on and went to accelerate right as it activated. That caused the little hesitation. Coming from driving a Ram with a Hemi and performance exhaust, I drive like a grandpa in the Gladiator. I'm sure living in a rural setting, I won't have the same fuel savings as someone living in Chicago. They probably save in a week what it costs me to drive the 8 minutes to work daily.

 

[ShadowsPapa]

so are the fuel saving eaten up by replacing the starter and batteries ?

No. The starters are not what you may be used to. I restore starters in my shop to this day, and the starters used in these are going to outlast the starters of the 70s, 80s, 90s, etc. no matter what.
Bearings instead of bushings, far better windings, total design change.
It's not only FUEL saved - auto makers get CAFE credits, there's emissions reductions (in fact, EPA uses methods to calculate these things that most aren't aware of)

And - many locations are starting to limit idle time, even to the point of ticketing or finding violators.

ESS doesn't impact battery life.
ESS tracks exactly where each piston is, when each injector last fired, and much much more so starting after an ESS event is a mere fraction of what it takes for a cold start.

If you want to conserve parts and batteries - avoid COLD starts and keep things in good shape so it is easy to start the thing early in the morning for the first time. Don't try to save money on cheap oil - use the recommended oil, for example.
ESS starts present no issues for the batteries, there's almost nothing pulled from the battery for an ESS restart - sitting for a week or longer is the issue.

 

[ShadowsPapa]

ESS is not there to save money on fuel. It's there for reducing emissions while stopped by reducing the time an engine runs idle.

Fuel too - CAFE........... but the EPA connects the two. Save fuel, reduce emissions. EPA says if you are burning fuel you are creating emissions, but they also have CAFE numbers to meet and they get mpg credits for this sort of thing.

As far as fuel, like I said, independent research shows 7 to 10% isn't uncommon for the ESS systems.

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