I have the same problem in my Toyota RAV4 with DVD navigation. The microphone is also near the homelink buttons and it doesn't work as it should. I hear everybody very clearly but nobody hears me well. If I want someone to hear me I have to shout, it's really annoying and this bluetooth handsfree is useless!!! Have You found any solution to this problem? I was told in Toyota ASO that there is no regulation for microphone, but I am not sure if they know what they are saying.