I have a problem with the sound system, it plays CD's, you see the tracks playing and you can change track, also the USB input works I can see it play the tracks and I can change track, same with the radio. But there is no sound, the parking sensors don't give a warning when you are close to an object either.
I have checked the 10 A Hi-Fi amplifier fuse and it looks good, also double checked with a spare fuse and same thing. (The mute is not on!).
My car is the DS4 2012 sport, any suggestions would be welcome.