Please help me - so frustrated

[ColonelSanders]

You can disconnect the door plugs and drive to make sure it’s not a door ajar issue

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[GearWhore]

Chased this issue a few times in my '21 JLURD. Sucks & can be a little scary when a light changes & you can't move.

Mine seems to have been one or both of the batteries going/gone. And green "canbus" behind the dash replaced, twice.

Dealer will "try" to chase it until you're out of warranty.

 

[alphawolff]

I purchased my 2024 Wrangler 2.0 in May and in October I started having a problem. It only did it 5 times between the last week of October and mid-December and then it started happening a whole lot more often. When I am at a stop with the auto/ stop steer feature activated, when I try to then go, it’ll come up “shift to Park to start “ and the D will flash on the shifter (so basically the same as if your car door is left open). And now the past two times it has done it, it also flashes “push brake and push button to start” and I can’t just shift into park and then drive but I have to turn the jeep back on. The dealership First said that it was a wire to one of my aftermarket lights run incorrectly on the battery and they moved the wire. That of course didn’t fix it. The second visit they said both batteries failed the test and my alternator was bad and they replaced those. The third visit was they said my grill insert and it was keeping the hood switch from contacting so they put a piece of foam in there. I picked it up today and it did it again tonight. I am at a complete loss and so frustrated. Does anyone have any insight?

This only happens during stop start?


OK. Stop using stop start.

 

[AndySpill]

I'm fine with those favoring that you disable engine start stop (ESS) provided two conditions are met:

1) The underlying problem is fixed by the dealer such that if you ran start stop events this problem would no longer occur, and

2) Not running such events is your wish. In fact if it is, I'd also recommend that you bypass the Aux battery (instructions available on request.). That Aux battery if often less reliable than your main, and since it is connected in parallel with it, if either battery dies it not only can take the other with it, but even if it doesn't, it's recommend that when one battery is replace, so is the other. What little benefit it provides in additional amp hours is not offset by its lack of reliability or purpose if ESS events are prevented, either by pressing the button or buying tech to turn ESS off for you.

The problem with turning ESS off, temporarily or permanently to solve this is that it might mask an underlying problem you're having that if not addressed could turn up elsewhere. By this logic those that recommend turning ESS off might as well just suggest that you disconnect the Aux battery but not yank Fuse 42: both normally being part of the bypass process. In all but the earliest of 2018's, doing so will turn the ESS off light on the dash, no tech required. The problem with this approach is that, by analogy, that light being on can mask other problems that cause it to come on that you need to know about.

Turn ESS off because you don't like it. Not as a tool to prevent other problems from manifesting themselves.

 

[gato]

This only happens during stop start?


OK. Stop using stop start.

This. The untold amount of grief that Jeep's implementation of Start/Stop on the JL/JT has brought to owners is beyond comprehension. It was there to improve test condition MPG by ~0.5MPG and enable Jeep to round up the CAFE MPG.

The fact that owners persist on trying to use this system and spend hundreds replacing the aux battery when it dies, etc is pure lunnacy.

Pull fuse 42, disconnect and tape the aux battery negative. Get a Tazer to make sure it remember the last status of S/S at the first indication of trouble and live life.

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