Everything on the inside of the car is controlled and displayed through the GPS screen and controls. When this went out there was no radio; no disc player; no phone connection. Everything that depended on memory also was out including the clock, the steering and seat set points. The electric door locks were also out. I was not able to get the car to the repair shop for six (6) days and literally the minute I drove up to the repair door, it all started working again!