Does anyone know what would be the cause? I press the talk (voice command) button, then there is a voice prompt, saying it can be interpreted, then I press the same button again to say either "navigation", or "phone call", or whatever the standard command is, it always responds "pardon", followed by "no command is heard". I did another Garmin update without sucess. I have already made an appointment with dealer, but just didn't want them to find out some simple things I omitted and charge me for the time. I have Honda extended warranty on it, and if it's a real issue, it would be covered.