How do you fix the radio display on a Mazda 6?

To fix the radio display on a Mazda 6, start by checking the fuse related to the radio in the fuse box, as a blown fuse can cause display issues. If the fuse is intact, try resetting the system by disconnecting the car battery for a few minutes and then reconnecting it. If the display still doesn’t work, consider updating the software or taking the vehicle to a professional for further diagnostics, as it may be a hardware issue.