I buy brand new AVH unit and i want to install bluetooth adapter. I call connect my cellphone to my unit i can speak when i receive call but when i'm ine main menu i select phone and at the bottom left i select AV MENU in this page i can see 3 selection FUNCTION AUDIO and SYSTEM. SYSTEM and AUDIO is blue i can select BUT i can"t select function menu and i don't know why. I rest my radio and my bluetooth adapter but FUNCTION MENu stay gray.

I call pioneer and he tell me they never see that before so....

Plz give me answer to my problem

 

Nbody can give me suggestion for my problem