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Thread: Auto STOP-START Stopped on its Own

  1. #61
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    Quote Originally Posted by BillArnett View Post
    I connected my compressors to one of the two bolts on top of the negative battery post, just like Eddie did in his winch video. Is that not correct? Where is that current sensor? Is it the black thing below those two bolts?
    Yes it is the black thing :-)

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  2. #62
    Been Around the Block BillArnett's Avatar
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    Thanks!

    So... When I air up my tires it's pulling quite a lot of current (maybe 100A) but only for a couple of minutes. That's a small fraction of the battery's capacity. But apparently enough to trigger the "battery protection" mode in the Start/Stop system. But oddly, NOT enough to cause the charging system to activate the alternator at idle. Ergo, it's useless to run the engine while running the compressors since it isn't charging anyway. Right?

    What will happen when I'm pulling 500+ amps with my (yet to be installed) winch? Several years ago I had to do a pretty hard pull with the winch on my JK. It wasn't moving until I revved up the engine which raised the voltage which gave the winch just enough extra power to move the load. What will the JL's tricky charging system do in a similar circumstance?
    JLUR Granite, 3.6L auto, all the goodies; ARB "Quad" on-board air, Cooper STT Pro 37x13.5R17, Pro Comp Predator 17x8.5 wheels, Rubicon Express 2.5" lift, King remote res shocks, aFe Rock Basher exhaust, more to come...

  3. #63
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    Quote Originally Posted by BillArnett View Post
    Thanks!

    So... When I air up my tires it's pulling quite a lot of current (maybe 100A) but only for a couple of minutes. That's a small fraction of the battery's capacity. But apparently enough to trigger the "battery protection" mode in the Start/Stop system. But oddly, NOT enough to cause the charging system to activate the alternator at idle. Ergo, it's useless to run the engine while running the compressors since it isn't charging anyway. Right?

    What will happen when I'm pulling 500+ amps with my (yet to be installed) winch? Several years ago I had to do a pretty hard pull with the winch on my JK. It wasn't moving until I revved up the engine which raised the voltage which gave the winch just enough extra power to move the load. What will the JL's tricky charging system do in a similar circumstance?
    You revving your engine increased the current not just the voltage. Which you shouldn't have to do winching if u have a healthy battery. I have had my jeep buried 50" deep in mud and never had to rev the engine to winch out. Regardless if it sees a 500A draw it's going to fully excite the alternator.

    What do you mean it put it in "battery protection mode"? There were faults on the dash? Or it just didnt shut down so it was working fine?

    Remember draining your battery down some then charging it back up when needed versus running it constantly overcharging isn't only good for fuel economy it very good for your battery.

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  4. #64
    Been Around the Block BillArnett's Avatar
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    Quote Originally Posted by BillArnett View Post
    Thanks!

    So... When I air up my tires it's pulling quite a lot of current (maybe 100A) but only for a couple of minutes. That's a small fraction of the battery's capacity. But apparently enough to trigger the "battery protection" mode in the Start/Stop system. But oddly, NOT enough to cause the charging system to activate the alternator at idle. Ergo, it's useless to run the engine while running the compressors since it isn't charging anyway. Right?

    What will happen when I'm pulling 500+ amps with my (yet to be installed) winch? Several years ago I had to do a pretty hard pull with the winch on my JK. It wasn't moving until I revved up the engine which raised the voltage which gave the winch just enough extra power to move the load. What will the JL's tricky charging system do in a similar circumstance?
    Quote Originally Posted by 13_gecko_rubi View Post
    You revving your engine increased the current not just the voltage. Which you shouldn't have to do winching if u have a healthy battery. I have had my jeep buried 50" deep in mud and never had to rev the engine to winch out. Regardless if it sees a 500A draw it's going to fully excite the alternator.

    What do you mean it put it in "battery protection mode"? There were faults on the dash? Or it just didnt shut down so it was working fine?

    Remember draining your battery down some then charging it back up when needed versus running it constantly overcharging isn't only good for fuel economy it very good for your battery.

    Sent via....
    No faults, just the ESS not shutting off the engine because it wanted to charge the battery.

    I get it about not constantly charging unless necessary. It's just unexpected and it would be nice if the owner's manual explained what's going on.

    The situation I mentioned was actually kind of amusing. It was my first big trip with my new 2011 JK two-door. We were in southern Utah many miles from civilization on an easy road when we came to a T intersection that was completely blocked by a semi truck which had tried to make the turn and got hung up on a berm. I'm talking about one of those huge 80,000 lb rigs firmly on his frame rail in soft dirt. I could have easily driven around him but with a brand new Warn Powerplant and a bit too much confidence I decided to try to pull him out. A straight pull only dragged my Jeep toward him. So I used another strap to attach my rear bumper to a big tree. But with all 9500 pounds from my winch the big rig wouldn't budge. So I rigged a double line pull with one of my ARB blocks. That didn't go, either (19000 pounds). So I rigged a triple line pull with two blocks (28500 pounds). It was at that point that it finally made it but only by revving up. But stupidly, I didn't take any photos
    JLUR Granite, 3.6L auto, all the goodies; ARB "Quad" on-board air, Cooper STT Pro 37x13.5R17, Pro Comp Predator 17x8.5 wheels, Rubicon Express 2.5" lift, King remote res shocks, aFe Rock Basher exhaust, more to come...

  5. #65
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    Quote Originally Posted by BillArnett View Post
    No faults, just the ESS not shutting off the engine because it wanted to charge the battery.

    I get it about not constantly charging unless necessary. It's just unexpected and it would be nice if the owner's manual explained what's going on.

    The situation I mentioned was actually kind of amusing. It was my first big trip with my new 2011 JK two-door. We were in southern Utah many miles from civilization on an easy road when we came to a T intersection that was completely blocked by a semi truck which had tried to make the turn and got hung up on a berm. I'm talking about one of those huge 80,000 lb rigs firmly on his frame rail in soft dirt. I could have easily driven around him but with a brand new Warn Powerplant and a bit too much confidence I decided to try to pull him out. A straight pull only dragged my Jeep toward him. So I used another strap to attach my rear bumper to a big tree. But with all 9500 pounds from my winch the big rig wouldn't budge. So I rigged a double line pull with one of my ARB blocks. That didn't go, either (19000 pounds). So I rigged a triple line pull with two blocks (28500 pounds). It was at that point that it finally made it but only by revving up. But stupidly, I didn't take any photos
    Ok I change my tune. That pull may requires revving lol

    If there are no faults nothung is wrong. The jeep is smart and know what's better for itself long term. Intentionally draining the battery down a tad then recharging it during optimum conditions is what it will try to do to be most efficient. It never lets it get low enough to cause an issue. The owners manual could never explain how things work like that. It's easy, no fault code, no issue. Lol

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