2019 Jeep Grand Cherokee Battery drain Part 2

This is a part 2 of a case study that I have not seen before. In part 1 I got confused to what is killing the battery. In this part I found the cause. not only one but 2. Hopefully you enjoy it and have a good day.
Part 1
• 2019 Jeep Grand Cherok...
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Thanks For Watching!

[@janicevostry3890]

That was an interesting story. Don't remember ever seeing a 2 battery problem.

[@DallasAutoDiag]

Me neither. That was the first time for me also

[@mks-1982]

عاشت ايدك صارلي فترة انتظر التكملة والحمد لله انك لكيت المشكلة وحليتها ، بالتوفيق اخي

[@DallasAutoDiag]

اشكرك

[@gilbertomoran7420]

Good job, Ali ! We all learned a big lesson thru your pain . Test batteries before diagnosing battery drain . Thanks for the video brother !

[@DallasAutoDiag]

Thanks G

[@franciscodiez5825]

Great video! Thanks for sharing and bringing us along

[@DallasAutoDiag]

Thanks

[@nickayivor8432]

Can't wait for the next video Brilliant video 👍 ASTUTE, Dallas Auto Diag From Nick Ayivor from London England UK 🇬🇧 ⏰️ 14:51 Good Afternoon

[@DallasAutoDiag]

Thanks Nick!

[@DuaneDonaldson]

I did not think this was possible, I was thinking unplug the alternator late in the video as I have seen an internal short several times. I see some shops only change the AUX battery due to some STOP START problems. I believe it is in print somewhere that recommends that both batteries be changed together as they are tied together and charged together. In some Jeeps, the 2 batteries are not located together but they still ought to be changed together and then, QUESTION, does a Jeep need a battery reset in the computer?? Thanks for all the great diagnostic or technician-level videos, I don't watch the DIY-type videos based on the name of the video, this is why the Title of the video is so important IMHO, cheers.

[@NextLevelAutoDiagnostics]

Wow! So I was on the right track when I called the batteries in Part 1. I asked if you tested the batteries....remember? 😊

[@DallasAutoDiag]

You were. I didn't wanna ruin it for other viewers.

[@NextLevelAutoDiagnostics]

@DallasAutoDiag Great job buddy!

[@joeandgod1]

I had a big truck with two batteries and one battery was bad and drawing current from the other battery, as it sat, as I understand it.

[@DallasAutoDiag]

Yes correct

[@_ericsanchez]

Interesting. What a toilet on wheels.

[@DallasAutoDiag]

First time I hear this expression lol. Love it.

[@benjaminlevi7792]

Good job bro ❤

[@DallasAutoDiag]

Thanks Ben

[@VitalieSurdu-tr5rx]

Woow!! Great find! My 2019 started doing the same thing (also, no horn on locking the car). I took it to Napa Autoshop, they tested the battery and said that the battery it's good. Should I test the small battery separately and change it? Thank you.

[@DallasAutoDiag]

Yes test the small battery for sure

[@billluzius3778]

That was a good one tricky

[@DallasAutoDiag]

For sure

[@danman9017]

the small battery is weak and getting charge by the other battery that cause battery drain you did not do battery test is only thing that make sense to me

[@DallasAutoDiag]

I agree. The reason why I did not do battery test because its obvious that the test is going to indicate a bad battery as it dies quickly. I have diagnosed many power drain vehicles with dead or bad batteries. This one was tought. I am glad I record it and in the future I will always recommend to replace both batteries if the car has more than one even if only one is bad.