Ive had a few issues with my Wagoneer, from seat heaters shutting off to speakers being blown, but twice the computer has crashed on startup and rendered the car completely useless until the dealer could reset the system. They reset everything and it was fine for a couple weeks, then crashed again. Has anyone else seen this? Ive had four service visits in the first five weeks of ownership. Hoping this is just a lemon and not a larger vehicle issue.