I was hoping someone from your area would jump in and help. I know nothing about the AU's. I'm guessing there is a button or a series of buttons to push that would display the serial number on the readout. Do you have an owners manual?
so i was driving my 2001 ford mustang gt 4.6l v8 last night and all of a sudden it just made this loud CLIICKKCKCKCK noise..scared the shit outa me so i turned down the music then when i pressed the gas it made the click noise and i pulled into a parking lot and shut it off then i turened it back on and it did the noise and smoke came out the back end.. gray smoke not blue.. so what the hell happened? i took it the the dealership cause its still under warranty and i either threw a rod or blew the engine?