Does anyone know how to factory reset a 2018 UConnect UAS 8.4 No-Nav system in a 2018 Dodge Challenger? None of the old procedure work. They changed models in 2018. If anyone knows how I would really appreciate your input. I can get to the Dealer/Engineering Mode menu but no option to reset to factory. I even found this procedure today but it doesn't work either. I don't need to reboot it, I need to reset back to factory. Master Reset for Dodge Charger/Challenger ONLY BEFORE ATTEMPTING A MASTER RESET PLEASE MAKE SURE THAT YOU'VE HAD THE UNIT INSTALLED IN YOUR VEHICLE FOR AT LEAST 48-72 HOURS. MOST ISSUES WILL BE FIXED IN TIME AS YOUR VEHICLE IS ADJUSTING TO THE NEW SYSTEM. A master reset only works for Chargers and Challengers with a UAQ or a UAS. If you are experiencing issues with your UAQ or UAS system please attempt a master reset. Master Reset 1. Power on the radio. 2. Click on the Phone icon. 3. Hold the top right corner of the screen for about 13 seconds *It may take longer. 4. The radio will shut off and restart. 5. Master reset is complete.