I think what is happening is that you press the CD display button (ex: cd 4) to quickly then hit something else. This happens to me when I am being too quick. Essentially, the volume becomes inaccessible on the steering wheel + it is impossible to switch to a different CD. The radio works fine, though, as does bluetooth. Not the CD though nor can you remove the CD cartridge as it becomes basically 'stuck'.
What I do is walk away from the truck for a few minutes & when I come back I restart the vehicle & things are back to normal (for a Range Rover). The CD cartridge is sticking out & the issues mentioned before are long gone.
What I do is walk away from the truck for a few minutes & when I come back I restart the vehicle & things are back to normal (for a Range Rover). The CD cartridge is sticking out & the issues mentioned before are long gone.