HIGH VOLTAGE WARNING on Jeep 392

wayoflife

wayoflife

Administrator
Staff member
LOL - man, I just can't get a break! Just went for a test drive in my 392 after installing our new EVO lift and a couple of miles into it, I got a BATTERY light pop up on the EVIC and with the Voltage showing a pretty high 14.8v :oops:

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I'm pretty sure that this is a totally unrelated problem and that the lift install had nothing to do with it but that said, have any of you had this problem on your 392 or really, any JL Wrangler for that matter?
 
wayoflife said:
LOL - man, I just can't get a break! Just went for a test drive in my 392 after installing our new EVO lift and a couple of miles into it, I got a BATTERY light pop up on the EVIC and with the Voltage showing a pretty high 14.8v :oops:

20250501133619-34425db9.jpg


I'm pretty sure that this is a totally unrelated problem and that the lift install had nothing to do with it but that said, have any of you had this problem on your 392 or really, any JL Wrangler for that matter?
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Ugh, sorry, that bites!! It seems to me someone on here had that problem in the recent past.

Edit: https://www.wayalife.com/threads/16-9-volt-reading.67189/#post-1415181
 
cozdude said:
delete the auxiliary battery. that will fix it :rolleyes:


in all seriousness, that sucks. did you leave the key on by accident and have a lowish battery?
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LOL - right!

The key was not on but it is possible that the battery was a bit on the low side. There was a time about a month ago that I left my race radio on overnight but it didn't kill the battery. Figured things were okay since I haven't seen any issues since or at least, till now.
 
I had it and it got fixed by replacing aux battery.
Message in the image below appeared also around the same time that the high voltage warning.
 

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I kept getting that warning on my 3.6, along with power steering out, engine shutting down, etc.. seemed to happen on the first start after idling the Jeep for 30 minutes or so. Ended up getting rid of because of this
 
JKrob15 said:
I kept getting that warning on my 3.6, along with power steering out, engine shutting down, etc.. seemed to happen on the first start after idling the Jeep for 30 minutes or so. Ended up getting rid of because of this
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sounds like that Jeep was made after the xmas party drunk lunch break.

I've left my 2018, 3.6 idling for long periods of time (summer with the dog) and haven't faced any issues.

I have noticed the remote start shuts off quicker than it does on the JKU
 
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