Yeap you have to cycle through the mode button bottom right. It switches Radio/cd/ect - mine says no disc when I get to the changer as there are no discs in it... but I have a disc in the front loader.

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BMW X5 E53 3.0 Diesel Sport | Sapphire Black Dakota Beige Leather interior | Year 2004

What I had updated
Carbon Effect Steering Wheel
Panoramic Sunroof Fix
PVC Replacement
All glowplugs and glowplug regulator
New discs and pads all round
All new front suspension links, bushes and rods