Not sure if this has been figured out yet. I did a quick search on the forums but didn't really find an answer. Hopefully it has already been discussed. I have a 2013 c2. Is there a way to enable a beep sound when you unlock and lock the car? I think in the manual it implies that only the smart key has a beeping sound but I hope that isn't true.
Often easier to use Google to search the forums. The answer is no, on the C1 and C2, you cannot. On the C3 and C4 it is on by default and can be turned off. Door Lock Beep | PriusChat Horn Honk when Remotely Locking Car?? | PriusChat