Join Date: Mar 2018
Location: NW burbs, Chicago, Illinois
Expected operation of ESS in cold weather
OK, there are threads about the ESS but I have not been able to find the right answers. If I missed one, point me to the right place.
My commute is about 12 miles and lately (it is winter now and temperatures are in the 20's and 30's)ESS hasn't activated for the entire trip. I've observed that when the coolant temperature reaches to 180 degrees or so the ESS low engine temperature indication switches off and ESS is ready. What I have noticed lately is once I reach 180, instead of ESS activating, the next message is "charging battery". Which battery is that referring to? It seems that after ten miles at moderate speeds there should be no need for further charging. The same observation pretty much reflects the trip home though often the ESS is ready part way home. The car is driven almost every day and rarely does it sit for three days.
Otherwise ESS has worked and I have no complaints about it but now I have questions.
What good is ESS if it doesn't activate in, what I call a "normal trip"? Am I missing something?
Am I on the way to being a candidate for a battery replacement? FYI, the battery voltage indicated is 14.6-7 Volts.
1966 Chevy Nova Sport Coupe (wish I could get it back)
1975 Plymouth Valiant
1989 Plymouth Voyager
2005 Chrysler T&C
2018 Chrysler Pacifica Red Velvet w/Advanced Safety and upgraded audio (March 2018 build)