Just an update to this post: The headlights were the same yesterday morning.??? SOMEBODY must have changed the headlight switch from "auto". Please notice that I am NOT blaming my wife. So the headlights being 'dim' had nothing to do with the batteries.Well, this post is not exactly about 'procedure'. Running some errands Saturday and when I lifted my foot off the brake the normal ESS seemed odd. Kind of like it did a double start in a micro second and sure enough............"Service ESS system" appeared on the dash. We finished our errands and by the time we got back to the house the message and symbol were gone. Sunday I used the remote start and the van seemed fine except the message was back. I had an early meeting Monday morning. Remote start. I noticed the LED parking lights were on as normal. When I started to drive down the street, the headlights didn't seem to be on. Got home from my meeting and called the dealership. I told them about the ESS service message and asked if they had the battery (I can't for sure recall if I asked about 'battery' or 'batteries'). The service writer said sure the battery is in stock, bring it on in. Within 20 minutes of getting it to the dealership, they told me that both batteries needed to be replaced and the ESS battery wouldn't be there for several hours. They got me a loaner Pacifica that I kept overnight.
The work order says that: "Auto start/stop function is not working. Low battery voltage codes in several modules. Both the main and aux battery failed when tested with the GR8 tester. Both batteries must be replaced and the stop start system relearned. Replaced both the aux and main battery. Relearned stop start feature. Repair complete 1390".
So both batteries were replaced under warranty - 25,710 miles and under 3 years old. The van seems to working normally again. The work was done at Atlantic Dodge, Chrysler, Jeep in St. Augustine, FL.