These Jeeps act really weird with a failing or dead battery. Mine died in the middle of downtown Greenville, this time last year. It's no Atlanta or New York - but having a battery die in the middle of an urban area is by no means a picnic. My Jeep was throwing tranny codes, and sensor codes left and right. Then I tried a few things out and isolated it to the battery - So thats what I did - My OEM battery lasted me 4 years. - I tossed in a Mopar battery, didn't know anything about Optima batteries then. She's been fine since.