Battery Drain. Parasitic Drain.

[Tdkrum5]

I also had this problem after replacing both batteries and them going dead around ten days and after a couple days a sitting. I disconnected my winch and lights also. One day I noticed the lights in the center dash still on after sitting overnight. Unmarried my taser ran three weeks without it and no problems . Updated it and just reconnected everything’s yesterday. Here is my thread on this. https://www.jlwranglerforums.com/fo...tween-the-tach-and-speedo-dont-go-off.100571/

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[PA JLUR]

@PA JLUR

Rule out a blown N3 on the high amp fuse array..... if N3 is blown, the alternator will not charge the Aux battery.

The Main and Aux are hooked up in parallel..... that Aux battery not being charged will negatively impact the dual battery system....

IF you have been running the Tazer JL with the same firmware on it for months, I doubt it is the Tazer JL. Yes, there is a small chance though .... and the Tazer JL should be unmarried and removed temporary.

Caveat... Never leave Tazer JL feature, set in motion nav, enabled if you are not actively using that feature. The feature if left enabled can cause UConnect wake-ups that can deplete batteries and cause a no start situation. This is alluded to in the Tazer JL instructions.
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Closing the loop on the battery drainage issue. It was the Tazer. Tazer update eliminated the issue. Thanks, guys.

 

[F Cerioni]

hi,
I experienced the same issue with my 2018 JLU Sport, where I installed a Tazer JL Mini around a month ago. Even after replacing the Aux battery (the Main one showed good health when tested), I kept having depleted batteries overnight: I'll come next morning to see the EVIC, Cluster & Radio ON all night... Took the Tazer JL Mini out and for 5 days in a row no dead batteries.
I contacted Z Automotive via text last week (you can text them directly to 631-533-3363 ; texts only, no phone call to this number) and they replied fairly quickly.

Check your Tazer JL firmware version: if it is 11.3.7 it DOES have an issue that will drain your batteries. Update the Tazer to the latest version (11.4.1 now), and problem should go away.

Also, don't forget to follow the "Full Reboot + 2 Sleep Cycles" procedure carefully and completely!!

good luck

 

[entropy]

I recently went through all the fuses and found these items are draining my battery:

F97 pulling 1 amp (Something related to RADIO)
F105 pulling .10 amps (something related to AC)
f15 pulling 1 amp (IPC/switch bank HD elec)

I do have a tazer. I just updated the firmware and the parasitic draw still exists. It is all related to the uconnect screen. So this could very well be an issue with my uconnect firmware or something.

I might try unmarrying and removing the tazer and connecting the screen/radio cables back to how they were OEM and see if that fixes it.

I have the 7inch screen and my Jeep is from 2019.

 

[95lfc]

I updated my profile. Its a 2019. 3.6 auto. Ess works and no warning lights or messages.

I forgot to mention i did the aux battery delete. I also have ess always disabled via the tazer

Last week i put in a new battery thinking it was a bad battery issue ( my battery charger wouldn't charge the AGM so i thought it was toast, but ive got a smart charger now) But i still have the draining problem this week. So thats why i pulled the fuse on my trailer wiring module, and im monitoring voltage

What smart charger do you have?

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