Hi, I am very new to Lexus vehicles, recently bought 2007 GX470, such a nice upgrade from Toyota Solara 5spd. Anyway, I noticed that whenever I am using my NAVI system and listening my music, at the time direction announcements are made, only drivers side speaker lowers the volume and rest of 13 speakers remain to be in the same level. So, if music is kind of loud I can't hear announcements. I tried on my friends 2002 LS430, the same result. In addition, I tried NAVI in my friends Infinity, and whenever announcement is made, all speakers lower the volume and direction announcement is loud enough to hear. I went to menu and adjusted NAVI volume to 7, highest is possible. Any suggestion how to adjust announcements? Thank you.

 

Unfortunately the only way is to lower your music volume, so you can hear the directions as they come up. Sorry.