I just purchased a previously owned 2001 LS430 w/ultra premium pkg. The manual shows the buttons on the left side of the steering wheel as radio volume controls. Mine don't match the book. Mine are numbered 1, 2, and 3. They beep when I press them, but I can't figure out what they do. They don't adjust the radio in any way.
There is also a button just below the voice activation for the nav system, and I can't figure out what that does by reading the manuals.
Anyone know what they are for? And how to use them?
Ralph
