VIDEO : HOW TO Replace the Main & Auxiliary Battery on a JL Wrangler / JT Gladiator

wayoflife said:
I did not but it can some times take a bit for UConnect to restore information in the compute after a full 12V battery kill. As in, being completely disconnected from the battery. It can sometimes take up to 24 hours and you need to have your Jeep outside to get the signal. During that time, you may experience some weird electrical shit going on. All this is totally normal.
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Is it really true that the Wrangler JL does not persistently save its settings, and a cell signal is needed to "boot" the Jeep? I have noticed that my screen says " Updating Subscriptions" many of the times that I start it up.
 
bobfriesenhahn said:
Is it really true that the Wrangler JL does not persistently save its settings, and a cell signal is needed to "boot" the Jeep? I have noticed that my screen says " Updating Subscriptions" many of the times that I start it up.
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Cell signal not required to boot, but to run updates; the "Updating Subscriptions" is an update that runs on its own then fails.

I went thru this on my 2018, it would run late at night, fail and get stuck updating again and again.

A couple of times the head unit would be on and stuck on the next day (no idea how long it had been on other than it was hot to the touch). Used the tazer to do a reboot when the button reboot maneuver did not work.

I did several hard reboots (luckily, the failed update it did not brick my unit), called Jeep doesn't Care to be told they were aware of the issue, and it required a trip to the dealer to get the update installed; for a fee ($150 at the time) that you will have to pay out of pocket

I opted to keep doing a hard reset, run updates until it didn't fail (30-45 minutes each time) did this as I had time to waste over the course of a couple of weeks, uConnect shitty update.
 
Still not working this morning. I unmarried the Tazer, removed the auxiliary battery lead from the fuse box and disconnected the starting battery. I let it sit for a few minutes, and reconnected. The lights on the dash and cameras work again, so we’ll see what it does in the next couple days.

It seems the tazer was giving it issues, I need do update it and reinstall to see if this was the fix
 
piginajeep said:
Still not working this morning. I unmarried the Tazer, removed the auxiliary battery lead from the fuse box and disconnected the starting battery. I let it sit for a few minutes, and reconnected. The lights on the dash and cameras work again, so we’ll see what it does in the next couple days.

It seems the tazer was giving it issues, I need do update it and reinstall to see if this was the fix
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That's crazy. I appreciate the update. I'm still trying to figure out electrical gremlins on our big Gladiator and may try to unmarry my Tazer as well.

Regarding the auxiliary battery, is there a reason why you didn't disconnect the negative lead from the main terminal?
 
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