Electrical Issues - HELP!!

[wkeith67]

Okay. Where to begin. I have a 2020 Gladiator Rubicon. Headed to a buddies house the other day. Stopped at a stop light, Jeep Died. My buddy came out and we tried to jump start her, to no avail. I found out later, while waiting on the tow truck, that 'ol girl has two batteries, and that I probably screwed up trying to jump start her. From reading other post I have came to the conclusion that it was because of the AUZ battery being dead. Got her home, and now nothing works. No dome light, dash board, or anything. After reading more post, I bypassed the AUZ battery and pulled the F42 Ess Fuse, and taped off the ground cable. Bought a new main battery and hooked it up. Still no power anywhere. So back to the net... I find that the Z-fuse was blown, so order a new one. Fast forward to today. I get the new Z-fuse today, install it, and ... Nothing. Still no lights, dashboard, or anything. Am completely lost. I have checked that the main fuse box is seated and secure, and tested the other fuses.

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[DylanM]

When the Jeep died originally, before you tried jumping it, was absolutely everything dead then as well such as what you're experiencing now?

Is the vehicle stock or have you added aftermarket components? If modded, have you checked for any wiring that may have been damaged or connectors come loose in the area of the aftermarket parts (of special note, along edges of aftermarket fender liners)?

 

[wkeith67]

No, before we tried jumping it, the lights were flickering, and the wipers were slowly going even though they were not on.
I have only have a set of off road lights, and a CB added at present, all the wiring looks good.

 

[DylanM]

Use a meter or trouble light to check the cable you currently have identified as the AUX ground to see if it has continuity to the chassis or not -- you may have incorrectly identified it and it's in fact the ground cable for the main battery.

 

[wkeith67]

Okay, Just tested it. I have continuity to the chassis.

 

[DylanM]

Okay, Just tested it. I have continuity to the chassis.

You've got the ground cables mixed up then. If you want to have the AUX bypassed, disconnect and isolate the ground cable you currently have connected and reconnect the one that has continuity to the chassis.

 

[wkeith67]

Okay, reconfigured, but still have no power.
I was thinking that, but was hoping to avoid it.

 

[Mr._Bill]

You may have bigger problems, which will require a trip to the dealer. You will need to return it to the stock setup for that, so I would just start there.

Separately charge both batteries (new Main and existing Aux). Put it all back together and see what happens.

Your original symptoms indicate failure of one or both batteries. Even if the Aux battery is in bad shape, it should still come to life with a new Main battery.

 

[wkeith67]

That was my thought also. I bypassed the AUZ, so I should have something, at least that is my train of thought. I have nothing at all. I will go get a new AUZ battery, put it all back together, and if I still have nothing I will plan a trip to the dealer.

 

[SCMojaveGirly]

Okay. Where to begin. I have a 2020 Gladiator Rubicon. Headed to a buddies house the other day. Stopped at a stop light, Jeep Died. My buddy came out and we tried to jump start her, to no avail. I found out later, while waiting on the tow truck, that 'ol girl has two batteries, and that I probably screwed up trying to jump start her. From reading other post I have came to the conclusion that it was because of the AUZ battery being dead. Got her home, and now nothing works. No dome light, dash board, or anything. After reading more post, I bypassed the AUZ battery and pulled the F42 Ess Fuse, and taped off the ground cable. Bought a new main battery and hooked it up. Still no power anywhere. So back to the net... I find that the Z-fuse was blown, so order a new one. Fast forward to today. I get the new Z-fuse today, install it, and ... Nothing. Still no lights, dashboard, or anything. Am completely lost. I have checked that the main fuse box is seated and secure, and tested the other fuses.

We had a 2020 Gladiator Sport S that died on us like that. Apparently the Radio would stay on and drain the batteries. It could possibly be that. Was a defective Radio covered by warranty, but both batteries cost 600.00. Which I should have fought that. Previous owner replaced batteries a year prior. Guess they didn’t know the Radio had issues. Might be something with the 2020’s. Best of luck

 

[wkeith67]

Thank everyone. When I get it figured out I will post what was discovered and hopefully how to fix it.

 

[OldSarge]

Bypass the Aux battery and replace the main battery. 99% that will fix it. Lots of instructions out there on how to do this.

 

[Killroy Was Here]

Bypass the Aux battery and replace the main battery. 99% that will fix it. Lots of instructions out there on how to do this.

He said he already tried that.

 

[wkeith67]

Bypass the Aux battery and replace the main battery. 99% that will fix it. Lots of instructions out there on how to do this.

Yeah, "OldSarge". Already went that route.

 

[Nexstar7]

Okay. Where to begin. I have a 2020 Gladiator Rubicon. Headed to a buddies house the other day. Stopped at a stop light, Jeep Died. My buddy came out and we tried to jump start her, to no avail. I found out later, while waiting on the tow truck, that 'ol girl has two batteries, and that I probably screwed up trying to jump start her. From reading other post I have came to the conclusion that it was because of the AUZ battery being dead. Got her home, and now nothing works. No dome light, dash board, or anything. After reading more post, I bypassed the AUZ battery and pulled the F42 Ess Fuse, and taped off the ground cable. Bought a new main battery and hooked it up. Still no power anywhere. So back to the net... I find that the Z-fuse was blown, so order a new one. Fast forward to today. I get the new Z-fuse today, install it, and ... Nothing. Still no lights, dashboard, or anything. Am completely lost. I have checked that the main fuse box is seated and secure, and tested the other fuses.

Check your fuse aray. It's in front of the fuse box. It has 4 or 5 nuts and one looks like it's missing. There are feuses connected to it.

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