Motorola KRZR text/voice message tone during Bluetooth connection

Has anyone with a Motorola KRZR been able to get an incoming voicemail/text message ringtone while connected to the Prius bluetooth device? For some reason I don't get a ringtone for incoming text or voicemail messages. I do get an incoming call ringtone, but that's it. I've looked at my phone settings and have even tried changing the audio tone. Am I missing a step? Please help. Thank you.