Start/stop disabled?

[danimal2000]

You can get that message just from running the air conditioner... its a sensitive system. Mine said that the other day, turned air off... bam works, turned air on, same msg again.

Right but in that case I've seen the message is more specific "start/stop not ready. Cabin heating or cooling" or something along those lines. Even specifically "driver seatbelt unbuckled" "driver door open" etc. Turn the heat off, close the door, etc... just says "not ready" with no other info

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[Mr._Bill]

If that's the case, would the EVIC indicate something more than just "start/stop not ready"?
I've seen plenty of reasons on that screen, heat or ac is on, Door open, seatbelt not buckled...seems odd that "battery charging" or something like that isn't displayed.

You and others are probably right and it may just be time for new batteries. It's just confusing that there's no message, error, indicator etc that says so. My initial concern was I screwed something up with the fusetap and my tinkering. Maybe I pull f52 again see of there's any change. Would be a pain to undo my cigarette lighter mod and truly go back because I'd have to pull apart the dash.

It will show various messages for conditions that keep ESS from activating. It does not show specific messages for anything battery related, just the ESS not ready message. If the batteries get low enough, it will show a Aux Switches unavailable message that indicates the batteries need charging.

The only thing your wiring changes have done is to slightly increase the parasitic draw. The Jeep monitoring system is somewhat arbitrary with voltage levels and behavior. Your batteries are getting to a point where they will soon need replaced. They are still viable enough to operate the vehicle, but not healthy enough to satisfy the monitoring system.

 

[SargeDiesel]

Right but in that case I've seen the message is more specific "start/stop not ready. Cabin heating or cooling" or something along those lines. Even specifically "driver seatbelt unbuckled" "driver door open" etc. Turn the heat off, close the door, etc... just says "not ready" with no other info

Mine did not give me the additional heat/cabin msg.

It said exactly what yours said. I literally turned my air on and off several times just to make sure. The message disappeared and reappeared in concert.
(could have been just fresh air without the A/C button pushed)

But turning the system on/off definitely gave me the same msg you got.

I guess it is possible that maybe my battery was teetering the proper voltage to run the ESS and when I would put on the air conditioning, it would drain it just enough for the system not to be ready.?
but when that is, it usually says "charging".

But it definitely said "not ready" with no other explanation when I would turn on and off the climate control power button.

 

[danimal2000]

It will show various messages for conditions that keep ESS from activating. It does not show specific messages for anything battery related, just the ESS not ready message. If the batteries get low enough, it will show a Aux Switches unavailable message that indicates the batteries need charging.

The only thing your wiring changes have done is to slightly increase the parasitic draw. The Jeep monitoring system is somewhat arbitrary with voltage levels and behavior. Your batteries are getting to a point where they will soon need replaced. They are still viable enough to operate the vehicle, but not healthy enough to satisfy the monitoring system.

Great that all makes sense. So I don't have a "battery is shot" indication yet because it's still viable to operate the truck. 2yr5m, smh. Will probably look to replace both in the next few months. I suppose if I didn't drive so often it would get more obvious and they'd be done even sooner as they wouldn't get a daily top-up

 

[Mr._Bill]

Great that all makes sense. So I don't have a "battery is shot" indication yet because it's still viable to operate the truck. 2yr5m, smh. Will probably look to replace both in the next few months. I suppose if I didn't drive so often it would get more obvious and they'd be done even sooner as they wouldn't get a daily top-up

That is correct. This is the warning sign that something will need to be done.

The only 'Battery is Shot' message you will get is when the Aux battery is bad enough to fail the startup test. Other than that, it will drop hints, but won't come right out and tell you the batteries are in bad shape.

What usually happens is one of the batteries hits its breaking point, and you go out the next morning and need to jump start it. My Main Battery failed first, and I had to do that for five days until I got a replacement.

 

[egads]

I just bought my Gladiator two months ago, a 2023. It had 200 miles on it, new. The ESS has never worked. I checked the status on the dash and all it says is "Stop Start not Ready". Maybe a bad battery from the factory?

 

[sharpsicle]

It will show various messages for conditions that keep ESS from activating. It does not show specific messages for anything battery related, just the ESS not ready message.

That is correct. This is the warning sign that something will need to be done.

The only 'Battery is Shot' message you will get is when the Aux battery is bad enough to fail the startup test. Other than that, it will drop hints, but won't come right out and tell you the batteries are in bad shape.

What usually happens is one of the batteries hits its breaking point, and you go out the next morning and need to jump start it. My Main Battery failed first, and I had to do that for five days until I got a replacement.

This information isn't accurate. It will tell you "battery charging" quite frequently. It doesn't need to get to the breaking point to tell you that, just a state lower than ESS's operational threshold based on IBS information. Once the IBS indicates the batteries have recharged enough, the system will start working.

The "AUX Switches Unavailable" message is more a result of the overall system status at start-up, not an ongoing ESS monitoring situation. But I agree that seeing that message is a good indicator that batteries likely aren't holding charge like they should.

When the EVIC tells you nothing under the 'not ready' message, like OP is experiencing, it could be literally anything that doesn't have a pre-programmed message. I would agree that batteries would be my #1 suspect, but let's not say it's the only suspect, or that the EVIC will never tell you the battery needs charging.

 

[Mr._Bill]

This information isn't accurate. It will tell you "battery charging" quite frequently. It doesn't need to get to the breaking point to tell you that, just a state lower than ESS's operational threshold based on IBS information. Once the IBS indicates the batteries have recharged enough, the system will start working.

The "AUX Switches Unavailable" message is more a result of the overall system status at start-up, not an ongoing ESS monitoring situation. But I agree that seeing that message is a good indicator that batteries likely aren't holding charge like they should.

When the EVIC tells you nothing under the 'not ready' message, like OP is experiencing, it could be literally anything that doesn't have a pre-programmed message. I would agree that batteries would be my #1 suspect, but let's not say it's the only suspect, or that the EVIC will never tell you the battery needs charging.

Read what I wrote. There are no messages that the batteries need replaced. It does drop hints with the charging messages, but the only actual Bad Battery indicator is when the Aux fails the startup test.

 

[sharpsicle]

Read what I wrote. There are no messages that the batteries need replaced. It does drop hints with the charging messages, but the only actual Bad Battery indicator is when the Aux fails the startup test.

Yes, I read this, and it's incorrect:

It will show various messages for conditions that keep ESS from activating. It does not show specific messages for anything battery related, just the ESS not ready message.

I'm trying to clarify what happens for those reading this thread as I can already see it's being misinterpreted. You've got OP thinking that since the EVIC isn't giving a reason for 'start stop not ready' that it immediately means the battery is the issue, and that the EVIC will never show a battery-related message until it's completely crapped out.

 

[Mr._Bill]

Yes, I read this, and it's incorrect:

I'm trying to clarify what happens for those reading this thread as I can already see it's being misinterpreted.

I never received any message from ESS that indicated battery issues. It would just show ESS Not Ready. I did get the Aux switches unavailable message a couple times. The only bad battery indicator I ever received was when the Aux failed the startup test. My experience comes from 4.5 years driving a JT built in March of 2019. To say I'm providing incorrect information is not accurate.

 

[sharpsicle]

I never received any message from ESS that indicated battery issues. It would just show ESS Not Ready. I did get the Aux switches unavailable message a couple times. The only bad battery indicator I ever received was when the Aux failed the startup test. My experience comes from 4.5 years driving a JT built in March of 2019. To say I'm providing incorrect information is not accurate.

Well, you are, whether you want to believe it or not. Not saying you didn't experience what you experienced, but the EVIC 100% can and will often show battery-related messages. @SargeDiesel already posted a picture of that very thing. Your choice to accept that or not.

I'm just here trying to help by making sure we're all sharing the right information rather than trying to create new facts from anecdotal experience. I totally believe that you may have never received that message, but let's not turn that into "it will not show you a message". That's just not right.

 

[Mr._Bill]

Well, you are, whether you want to believe it or not. Not saying you didn't experience what you experienced, but the EVIC 100% can and will often show battery-related messages. @SargeDiesel already posted a picture of that very thing. Your choice to accept that or not.

I'm just here trying to help by making sure we're all sharing the right information rather than trying to create new facts from anecdotal experience.

Well, you're not helping any by saying that all will show the charging messages, because they don't. That is also incorrect information. I'll update in 2.5 years when my 2023 HA starts having battery issues.

 

[sharpsicle]

Well, you're not helping any by saying that all will show the charging messages, because they don't. That is also incorrect information. I'll update in 2.5 years when my 2023 HA starts having battery issues.

Then you're not reading my posts, because that is not what I have been saying:

When the EVIC tells you nothing under the 'not ready' message, like OP is experiencing, it could be literally anything that doesn't have a pre-programmed message. I would agree that batteries would be my #1 suspect, but let's not say it's the only suspect, or that the EVIC will never tell you the battery needs charging.

Let's let this be. No need to argue over a simple clarification. I was saying these things to help others in the thread, not attack you.

 

[jackalope]

I've had my 2023 for two months now, it has 1800 miles on it. Stop/start has never worked. I took it to a truck topper place yesterday to get a Venturous top put on it. The tech there showed me that of the three threaded screws coming up off the positive battery terminal, one had sheared off and the wire was rattling around loose on the screw post. He wedged a clip thing on it to hold it tight after installing the topper. Driving home the stop/start system started working.

 

[Mr._Bill]

I just bought my Gladiator two months ago, a 2023. It had 200 miles on it, new. The ESS has never worked. I checked the status on the dash and all it says is "Stop Start not Ready". Maybe a bad battery from the factory?

It could be a defective battery. It could be another issue. When does the door sticker show it was built, and when did you purchase it? If it sat on the lot for a while and it's not being driven regularly, it could just be that the batteries need to be charged.

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