I have a 14 Roush which I purchased last year from Carvana. This problem happened to my wife last week and had to have it towed to the Roush Certified dealer. They diagnosed the problem and discovered a wiring harness under the factory installed cold air intake had rubbed through the factory wire loom and caused a short which is blowing the fuse that controls the shifter and turn/brake lights. After 2 days of battels with Silver Rock, Carvanas warranty company, which i was told sorry, its an...
Electrical issue causing shifting problems