Jabberjaw

[jeeeep]

mine started the same way, both batteries, went about 8 months before it wouldn't start at all; something about that aux battery when it goes, it damages the primary battery.

I have a good AGM charger with conditioning cycles, both batteries crapped and would not charge

 

[wayoflife]

As all have already stated, it’s time for new batteries

 

[Mike Pierson]

Pfft, batteries? Time to do an aux delete… and if you’re really cool, try a main delete… you won’t do it.

 

[Sharkey]

I figured. Honestly, I feel like that had a good run. Hell, my stock tires made it to 60K.

If I delete the aux battery, should I do the speedo and mpg gauge delete at the same time so I can safely descend hills?

Screw it, I’ll follow the Jeep engineers’ lead and replace both batteries. They know a bit more than me.