Just done my first coding with ODBEleven. Control unit 5F Multimedia. Byte 4. Set bits 1 and 7 to one. Equivalently, change the hex value from 3C to BE. Slide to write. Turn ignition off and on again. Fader now active!
Hopefully this is useful for ODBELeven users without the drop down boxes in VCDS, especially since they have a sale on at the moment.
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