Did anyone ever find out how to turn up the volume for the bluetooth phone in the 2004? I'm thinking of getting a LS460 just to solve this problem... which is pretty ridiculous

 

Turn the car on or just to accessory. Hold down the option button on the right hand side of the navigation screen surround bezel. While holding down the option button turn your parking lights on and off three times. This will bring up another service screen that allows you to adjust the BT - blue tooth volume for your voice along with the callers voice. If you hold down the option button and do it again it will bring up another screen as well. Hope this helps.

Fuz16

 

It works this is not a joke on how to access the menu, I thought so too when I did a few months ago but some people thought it made it worse and went back to OEM setting.