Sorry for the late answer.
You need the original Audio Aero remote to activate the CD/PRE function, not the optional universal remote with LCD screen, it has only basic functions stored in memory.
I suggest that you call the seller, a dealer or Audio Aero and get an original remote.
You need the original Audio Aero remote to activate the CD/PRE function, not the optional universal remote with LCD screen, it has only basic functions stored in memory.
I suggest that you call the seller, a dealer or Audio Aero and get an original remote.