A couple times I have found head/taillights flashing while van was not running; I parked van in store parking lot, went into store for about 15 minutes, then returned to parking lot to find van lights blinking. Other (probably related) problems: Electrical system warning light has been coming on at "random" times since September 2017. Dealership (St. Clair Chrysler) checked the battery, told me it was good. They never checked the codes. Light continued coming on. Two different independent mechanics checked codes which showed overcharging (among other things) and suggested alternator regulator was bad. I had alternator replaced at independent shop. Light continued coming on. Same mechanic thought the new alternator was defective, and put another one in. Light continues coming on. Two times van has stalled while driving; multiple times I have found the two front windows down a few inches (not rolled down when I left car); often the remote takes multiple button presses to unlock, even with fresh battery; a couple times I have found head/taillights flashing while van was not running. Rear defroster not working (not sure if this is related). Some folks with similar problems suggesting Totally Integrated Power Module (TIPM) defect.