I noticed the digital time on the touch screen would take a long time to update and display after I start my 2015 3.8 sedan. This morning, funny enough, driving to the dealership for an oil change I noticed the date and time was completely off (Was set to Feb). So I manually reset it. I told the service guys and they said they rebooted the system and said they could not get the time to display. To my surprise, after I drove off I noticed it was not displaying the date and time anymore at all even after a long drive. I tried to go into the clock and set it myself but it would not allow me to. Even if I switched off GPS to manually enter the time the option was all grayed out. Is there a way to reboot/reset the system manually?