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Hopefully what putting here is related! Another low voltage system alert, related somehow to the TPMS, below is what I still get on my scanner after changing out the battery : B210A System Voltage low Basic Description: System Voltage Low Module Type: TPMS

I do believe, with the help of others, that my 2018 JK does not have an auxiliary battery like the JLs. Thanks All!

Thanks again for replying and I’ll proceed with trying to find out what the low voltage is all about. I may get a portable battery charger to have at all times.

Yes, also I think when everyone hears 2018 they think it’s a JL. It’s a Jk!!

I feel like a real dummy with my questions about an Auxiliary battery in my JK. Yes it is a 2018 JKU. But everywhere I look and all that I read, JKs, do not have an auxiliary battery!! Right???

I’m going to take your 1st advice and not worry about it until I see some objective findings. Thanks

It is a JK! Now is there any special technique to changing out the auxiliary battery?

From what I understand Jeep built JKs for half of 2018 and the rest of the year built JLs. I’ve attached a photo of my engine bay. Notice my fuse box is in front of the battery. on videos I’ve seen of jls the fuse box is near the fire wall

No, I have a 2018 wrangler JK unlimited.

I have not tried to get it out yet, but I think so, Supposedly under the fuse box. I’ve watch several videos on removing it by taking the fuse box apart. That’s a little scar for me. I’m just not sure which battery is making the scanner show low voltage.

I did go and check with some tire companies and they had no clue. I went, then, to a mechanic and he thought the low voltage issue could be the main battery or the auxiliary battery? Thoughts? Getting to the Auxiliary battery is a chore/pain!

Thanks, I’ll try that tomorrow.

This is what I’m getting on my JScan: What does this mean? B210A System Voltage Low Basic Description: System Voltage Low Module Type:Tpms

I don’t think anything will happen other than the annoying sound and the tire sign on the dash! I would like to think and show that all is ok.

Thanks, I’ll try that!

No other issues. Seems to be starting and running fine.

Ok, I disabled the Tpms and rescanned it and the same A210B came up. The battery is 5 years old and given us no problems. Is this something to worry about or not?

I have a new question for all. Today I scanned my Jeep, a 2018 jku and it’s showing a B201A Tpms code. I know it means low voltage but is it referring to the Tpms system or could there be battery issues. If I use my JScan to turn off the tpms will take solve the problem?

I there is an increase in wind noise, but it’s not much. Barely noticeable! Big tires add more noise!

I’ve had a Sunrider top on and off my Jeeps for several years. I have had trouble with water leaks (rain) at times. Other than the leaks it is great! Easy installation and removal. I’m sure the leak problem can be solved but in the meantime I just remove it and go back to the freedom tops. In a...