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Thoughts on my plan to avoid future Start/Stop issues???

JL ME

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Leave it alone until the warrantee is up. Then bypass the aux battery.
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smokeythecat

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I don't disagree, Sean. I'm playing the long game as it concerns the adverse effects of ESS on an engine. One man's use case isn't another's.
But what ARE the long term adverse effects of ESS on an engine? All I have read here are a bunch of unsupported assertions. However, I promise to post again in a few years to tell you all how my '21 Willys Sport 3.6 is doing without having disabled ESS.
 

five9dak

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All 3.6s (including JL VVT motors) can have roller rocker / cam failures. Whether these failures are strictly lubrication related, or if there is a hardness or valvetrain dynamic issue at play I do not know. ESS will negatively impact lubrication. Take your chances, you won't learn anything either way without looking at the whole dataset, which we are not privy to.

You call them upsupported assertions, this is tribology 101 stuff, not rocket science.
 

Koolkarguy

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I've been reading this forum daily since I put a deposit down on the new 2024 Rubicon X 2D 3.6, and I notice a lot of issues with the start/stop system. This is a feature I don't happen to like at all anyway, and I certainly do not want to invite future battery or electrical issues, or to put unnecessary wear in the engine continually starting. I've read about getting devices to permanently turn the feature off by remembering the last setting (off) on start up.
My idea is this: after hitting the start button to fire the old girl up, immediately and habitually turn off the Start/Stop feature. I am the sole driver. If I forget, I hit the button to disable when it turns off, reminding me (which rarely happens after the first few days of driving) that I hadn't done it yet. Seems to me it serves the same roll as an alteration, without fidgeting with the electronics or programming at all.
Anyone else following this plan? Is there something I am missing by making a semi-permanent solution with reprogramming, etc?
I use the Tazer it's worked perfect to disable start/stop and to change other setting etc. Mine is a ecodiesel and as a owner of a diesel trucks since the early 90's I can't imagine turning the motor off and on can do anything but wear out parts 10 times faster. Congrats on the new Jeep!!
 
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Bobby Hank

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I use the Tazer it's worked perfect to disable start/stop and to change other setting etc. Mine is a ecodiesel and as a owner of a diesel trucks since the early 90's I can't imagine turning the motor off and on can do anything but wear out parts 10 times faster. Congrats on the new Jeep!!
Thank you!! Can't wait to take it on the first road trip to the mountains (very large hills) of North Alabama in 3 weeks!!
 

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agpthng

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I hate that start/stop system. Cause so many electronic and electrical issues last year at the age of 3. I shut it off every time I get into the Jeep.
 

rcadden

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I truly appreciate you writing all that, and should a problem with the batteries develop I'll reconsider my current plan, but until I have an issue, I won't try to fix it. I am NOT a mechanic (I'm a driver, master helmsman type). I'll probably just lay hands on my batteries and ask them to behave or Buddha won't recycle them into something better.
I tend to agree with you - I've left ESS untouched on my '21 Sahara Altitude until just a few weeks ago when the main battery died (~2 years, 43K miles). Doing a bit of research revealed that removing the auxiliary battery from the circuit is as easy as removing a single fuse and removing/isolating a cable from the main battery. Took me ~10 minutes, and it's all easily reversible - nothing was permanently removed or altered. Full write-up is the last post on my build thread.

I picked up a SmartStopStart from a forum member for a little less than retail and thus far have been happy. Again, nothing permanent - it can all be reversed roadside if necessary.

  1. I installed a hood solar panel. Whenever sunlight hits the hood the parasitic drain is eliminated and batteries are returned to 100% charge. All with zero effort on my behalf. This helps extend battery life considerably. It should be standard equipment on all vehicles at this point IMO.
I live in Texas - tell me more about this hood solar panel.
 

Sean L

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Mine is a ecodiesel and as a owner of a diesel trucks since the early 90's I can't imagine turning the motor off and on can do anything but wear out parts 10 times faster.
I think my main concern with the ecodiesel would be clogging up the DPF faster than normal. If it makes you regen a bit more often then that defeats the entire point of the start stop, lol.
 

JimThomas

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I've been reading this forum daily since I put a deposit down on the new 2024 Rubicon X 2D 3.6, and I notice a lot of issues with the start/stop system. This is a feature I don't happen to like at all anyway, and I certainly do not want to invite future battery or electrical issues, or to put unnecessary wear in the engine continually starting. I've read about getting devices to permanently turn the feature off by remembering the last setting (off) on start up.
My idea is this: after hitting the start button to fire the old girl up, immediately and habitually turn off the Start/Stop feature. I am the sole driver. If I forget, I hit the button to disable when it turns off, reminding me (which rarely happens after the first few days of driving) that I hadn't done it yet. Seems to me it serves the same roll as an alteration, without fidgeting with the electronics or programming at all.
Anyone else following this plan? Is there something I am missing by making a semi-permanent solution with reprogramming, etc?
We have two JL's, we do that with both. Combined we've had them for about three years of service, so far so good. We are no fans of Auto-Stall either. I have come to learn that the aux battery is intended to protect the electronics during the frequent starts. Also that one of two hood-closed switches controls it, and if you just unhook that switch it won't Auto-Stall anymore. Also that over time the aux battery may probably go bad and it should be 'addressed' before that happens, probably around year 3. Also that it is easy to short out / blow fuses when you're changing the primary battery, since the aux battery is still producing a live circuit. Overall, two many electronics where they used to be just electrical.

BUT we have two because they're fun to drive (6 spd manual), we love the Sunrider tops, they will go through snow, they look great, and they get decent mpg for what they are.
 

Mightyq

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I've been reading this forum daily since I put a deposit down on the new 2024 Rubicon X 2D 3.6, and I notice a lot of issues with the start/stop system. This is a feature I don't happen to like at all anyway, and I certainly do not want to invite future battery or electrical issues, or to put unnecessary wear in the engine continually starting. I've read about getting devices to permanently turn the feature off by remembering the last setting (off) on start up.
My idea is this: after hitting the start button to fire the old girl up, immediately and habitually turn off the Start/Stop feature. I am the sole driver. If I forget, I hit the button to disable when it turns off, reminding me (which rarely happens after the first few days of driving) that I hadn't done it yet. Seems to me it serves the same roll as an alteration, without fidgeting with the electronics or programming at all.
Anyone else following this plan? Is there something I am missing by making a semi-permanent solution with reprogramming, etc?
I agree. This is a bad feature to have when your wheeling.
 

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Willys41

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I have had a taze on day one
When my auxiliary battery went out the battery was only 2 years old
Not knowing what was going on at the time I tried starting it 3 times
On the third try it fried the 8.4 radio (non repairable)
From that point forward I replaced the main / disconnected auxiliary battery ground and f42 fuse
It cost me $750 for a used radio and $200 for a new main battery
My stop/star has been disabled sense day one
 

Bandit59

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I've been reading this forum daily since I put a deposit down on the new 2024 Rubicon X 2D 3.6, and I notice a lot of issues with the start/stop system. This is a feature I don't happen to like at all anyway, and I certainly do not want to invite future battery or electrical issues, or to put unnecessary wear in the engine continually starting. I've read about getting devices to permanently turn the feature off by remembering the last setting (off) on start up.
My idea is this: after hitting the start button to fire the old girl up, immediately and habitually turn off the Start/Stop feature. I am the sole driver. If I forget, I hit the button to disable when it turns off, reminding me (which rarely happens after the first few days of driving) that I hadn't done it yet. Seems to me it serves the same roll as an alteration, without fidgeting with the electronics or programming at all.
Anyone else following this plan? Is there something I am missing by making a semi-permanent solution with reprogramming, etc?
I do the same thing. Hit the button problem solved. You do get used to it. Sometimes I forget to hit the button. But really not an issue especially if you have a 3.6 etorque. It is more of an issue with the two battery system.
 

smokeythecat

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All 3.6s (including JL VVT motors) can have roller rocker / cam failures. Whether these failures are strictly lubrication related, or if there is a hardness or valvetrain dynamic issue at play I do not know. ESS will negatively impact lubrication. Take your chances, you won't learn anything either way without looking at the whole dataset, which we are not privy to.

You call them upsupported assertions, this is tribology 101 stuff, not rocket science.
My point is that a lot of people point out "common sense" explanations which may sound good but still aren't borne out by data. For instance, let's say it does cause extra wear. How much? And is that extra wear even relevant compared to the normal wear? It is just as easy to point out the "common sense" assertion that in the 30 seconds your engine is off you aren't losing much lubrication at all.
 
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Bobby Hank

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My point is that a lot of people point out "common sense" explanations which may sound good but still aren't borne out by data. For instance, let's say it does cause extra wear. How much? And is that extra wear even relevant compared to the normal wear? It is just as easy to point out the "common sense" assertion that in the 30 seconds your engine is off you aren't losing much lubrication at all.
I get your point, but why lose .01% of lubrication if you can keep it at 0%? Over 200k miles, you lose (insert math here) lubrication total.
 

Dyolfknip74

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I installed a Cascadia 4x4 VSS and it's basically a trickle charger for the POS batteries. Still going strong at 2. 5 years old as well. Never disabled ESS at all. Got used to it in about a week.



Yeah, but I don’t like it. I can’t get past thinking that the engine just died. I grew up having too many cheap ā€˜80’s vehicles where the engine would die. PTSD
You know that's not actually PTSD though, right? Lol.

I thought I remembered when the JL first came out that you could disable start/stop by disconnecting one of the two hood closed indicator buttons. I'm sure you needed to disconnect the proper one but certainly cant remember that. My Jeep does not have it.
Ya, except you can't remote start and you have to look at a dash light. How is that better than either getting used to it, hitting the button or disabling it properly? Lol
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