This morning when I was driving to work, I've noticed alert sound coming from the NAVI. It was quick and short Beep, Beep, Beep. Total 4 times when I was on the HFL. This sound is same as pressing the Navi buttons. Anyone know what that was?

 

Do you have call waiting? Suspect it was another call coming in.

 

NO... It was different tone other than the call waiting. It was Navi sound.

 

It is because you were already using the HFL and you can not use Navi voice commands while the audio is already in use with the HFL. Only one voice system can be active at a time. If you didn't press the Navi voice button, I am not sure.

 

I didn't press any buttons while talking on the phone.

Crazy huh?