[RoadiJeff]

yep, mine goes in in a week for this. 17k miles, always says battery charging ESS not available

I'm going to make an appointment tomorrow to take mine in for this. The ESS would occasionally say that the battery is charging but usually after driving 35 minutes to work it would be ready to go. It has been charging for the past two weeks.

I have about 600 miles left on my factory warranty and, although I have MaxCare lifetime coverage, I want to avoid a $100 ded. payment to get it fixed. Plus, I found out one time that even when things are still covered by the factory warranty my MaxCare plan kicks in with a free rental vehicle if they have to keep it overnight.

 

[RoadiJeff]

I dropped my 2018 HA off this morning because the ESS system was showing a constant "Battery Charging" status for the past several weeks. Even though I usually turn that feature off when I start the engine it's nice to have it available whenever I want to use it.

After 6 hours they called and said it's ready to go. They found battery cables loose and both batteries still tested bad after tightening everything. They replaced both batteries and also the IBM sensor, whatever that is.

They also found some stored codes that did not show up as faults on the IP. Something about a park sensor shorted to ground, left headlamp relay control and park assist signal. There is apparently a related Star Case s1808000017 about it. After removing the passenger side kick panels they found three loose pins in a connector. That was repaired, bcm reset, cleared learned adaptives, test drove and all was well.

I had around 650 miles left on my original 36k mile factory warranty, so it did not cost me anything. The service advisor said that my MaxCare lifetime warranty would not have covered the battery replacements. I'm glad I had it done now.

 

[RoadiJeff]

I put my battery tender on my Grd Cherokee for about 8 hours and now the start stop works. Obviously there is a problem with the charging algothrim.

Not necessarily. How many minutes do you usually drive it each time you go out? It will not fully charge on a trip under 20 minutes or so.