2004 And 2005 Rx330 Navigation System And Steering Wheel

[BudH]

I learned that the RX330 went to a "voice activated" navigation system in 2005 models. Does that mean that directions from the navigation unit are given verbally in the 2005 models? ("turn left.....")

What specifically is different on the 2005 navigation systems?

Also, the 2005 models have more steering wheel controls compared to the simple radio band/volume/station. What are the extra buttons controlling on the 2005 steering wheel?

Thanks in advance,

Bud H