2013 Pilot Touring. My USB audio and HD audio are intermittently inop. They will function for a while, sometimes at startup, sometimes after a period of driving. When they are inop...no audio output...the audio display for my USB connected iPod shows the full library, the selection playing and transitions to the next track normally however there is no sound. The HD display shows the entire saved library and I can select tracks but they appear not to be playing (time is not running) again, no audio output. All other functions of the Nav system, AM/FM, SAT radio, Bluetooth phone and audio as well as Aux input from iPod function normally. CD and DVD work normally. Dealer says the HD is “skipping” and cannot be replaced on its own but only by replacing the entire “audio unit.” Any information or thoughts would be greatly appreciated.