Stop/start revisited. Need clarification.

[Terrymo]

Does your Foxwell show CCA, SOC, and SOH? If so, do you recall roughly what it reported?

I ask because I have a Foxwell that does and am wondering if I should be more skeptical of it.

im sure it must have reported low numbers, I don‘t recall now, Maybe a little hyperbole on my part to make the point that without a load test it’s not 100% reliable. As you’re well aware, I’m not a battery expert.

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[THAW]

im sure it must have reported low numbers, I don‘t recall now, Maybe a little hyperbole on my part to make the point that without a load test it’s not 100% reliable. As you’re well aware, I’m not a battery expert.

 

[mwilk012]

I wish, but unfortunately not. Thanks

If it doesn't make sense to you, the problem is not something you're going to understand without simply changing out the batteries to prove it.

 

[alphawolff]

Thanks, that’s what I’ll do in the spring.

This is silly. Weak batteries show their head in the winter. You very well might find yourself in need of a jump if you wait. I strongly suggest dealing with the issue now rather than waiting.

 

[Terrymo]

Do you wait until you have a blow out to replace your tires, or wait until your wiper arms are scraping on the glass before you replace wiper blades?

Why not preemptively change batteries when they show signs of reaching end of useful life as well? The amount of posts on this forum with people trying to squeeze another few weeks or months out of their battery is strange to me.

 

[mwilk012]

Do you wait until you have a blow out to replace your tires, or wait until your wiper arms are scraping on the glass before you replace wiper blades?

Why not preemptively change batteries when they show signs of reaching end of useful life as well? The amount of posts on this forum with people trying to squeeze another few weeks or months out of their battery is strange to me.

While I don’t condone it, it is understandable in the current economy and with Christmas coming up. Especially for people who will need to pay to have it done at a cost of 500-700 dollars.

 

[Terrymo]

While I don’t condone it, it is understandable in the current economy and with Christmas coming up. Especially for people who will need to pay to have it done at a cost of 500-700 dollars.

Fair enough

 

[Steph1]

Do you wait until you have a blow out to replace your tires, or wait until your wiper arms are scraping on the glass before you replace wiper blades?

Why not preemptively change batteries when they show signs of reaching end of useful life as well? The amount of posts on this forum with people trying to squeeze another few weeks or months out of their battery is strange to me.

Oh but I keep charging the batteries a few times a week. -10 temp is why I’ll wait.

 

[Steph1]

Do you wait until you have a blow out to replace your tires, or wait until your wiper arms are scraping on the glass before you replace wiper blades?

Why not preemptively change batteries when they show signs of reaching end of useful life as well? The amount of posts on this forum with people trying to squeeze another few weeks or months out of their battery is strange to me.

To be honest, while it seems obvious to you, I’m not convinced that the batteries are the problem. By spring, I will have searched some more and might end-up changing them.

Reason why I’m not convinced is this: As we all know by now, my ESS triggers flawlessly on the first stop of a commute. If my batteries are too weak to make ESS trigger on all the other stops of that same commute because the Jeep is on “battery protection “ mode, then why does it work on the first stop of the next commute and on and on…. If I have 5 errands to run on a 2 hour period, ESS will trigger on each first stop of each commute.

My take is if it’s the batteries going dead, then it would only fire up on the first stop of the first commute and then wouldn’t work again on that same 5 errand day. I can leave the instrment cluster on the ESS info and see, as soon as I lift my foot from the gas pedal, the message switch from ESS operating, to ESS not available, battery protection mode.

I did changed the battery sensor but it didn’t change a thing. Next thing I’ll investigate is the alternator.

 

[Terrymo]

To be honest, while it seems obvious to you, I’m not convinced that the batteries are the problem. By spring, I will have searched some more and might end-up changing them.

Reason why I’m not convinced is this: As we all know by now, my ESS triggers flawlessly on the first stop of a commute. If my batteries are too weak to make ESS trigger on all the other stops of that same commute because the Jeep is on “battery protection “ mode, then why does it work on the first stop of the next commute and on and on…. If I have 5 errands to run on a 2 hour period, ESS will trigger on each first stop of each commute.

My take is if it’s the batteries going dead, then it would only fire up on the first stop of the first commute and then wouldn’t work again on that same 5 errand day. I can leave the instrment cluster on the ESS info and see, as soon as I lift my foot from the gas pedal, the message switch from ESS operating, to ESS not available, battery protection mode.

I did changed the battery sensor but it didn’t change a thing. Next thing I’ll investigate is the alternator.

Well it’s not obvious to me, I’m just speculating. If the batteries are good and none of the circumstances in the list I cut and pasted from the owners manual are occurring then it seems very strange. I wish you luck in getting it sorted out.

 

[plastrd]

To be honest, while it seems obvious to you, I’m not convinced that the batteries are the problem. By spring, I will have searched some more and might end-up changing them.

Reason why I’m not convinced is this: As we all know by now, my ESS triggers flawlessly on the first stop of a commute. If my batteries are too weak to make ESS trigger on all the other stops of that same commute because the Jeep is on “battery protection “ mode, then why does it work on the first stop of the next commute and on and on…. If I have 5 errands to run on a 2 hour period, ESS will trigger on each first stop of each commute.

My take is if it’s the batteries going dead, then it would only fire up on the first stop of the first commute and then wouldn’t work again on that same 5 errand day.

The reason for this behavior is simple, the Jeep doesn't remember anything since the last time the ignition was turned off. The protection mode doesn't throw a persistent code so it forgets the next time you start it and runs that check the next time the ESS triggers to put it back in protection mode. Shutting off the ignition clears that state and it repeats.

 

[Ratbert]

I did changed the battery sensor but it didn’t change a thing. Next thing I’ll investigate is the alternator.

If the cost of new batterie(s) is a concern then you might be in for a shock when looking at alternators.

 

[THAW]

@Steph1, use your JScan to check IBS data. Select MODULES > Body Controller > LIVE DATA > search "Intelligent" and select some (relevant) PIDs.

 

[Steph1]

@Steph1, use your JScan to check IBS data. Select MODULES > Body Controller > Live Data > search "Intelligent" and select the (relevant) PIDs.

Ok cool, I’ll do that.

Thanks.

 

[mwilk012]

At this point I can’t even tell if this is a joke or what. It’s the batteries.

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