Google the Axxera and model # to help you find a possible solution.
Is it the model with the blue button that you need to push and hold for it to turn on/off.
As said, check the radio fuse and its location as per the trucks owners manual.
I had to swap out my OEM radio because the screen was blinking .
The Ford warranty covered it but I upgraded to a DVD/navigation Panasonic and its a much better radio.
Someone on the Thor forum had the same issue and had to reset the radio by pulling it out of the dash, unplugging the power connector at the rear of the radio and that reset it to enable it to work.
