'11 JBL Bluetooth Prompt Volume

OK, I've seen several threads on here about how to adjust the ringer volume on the JBL Bluetooth stereo. This simply involves using the steering wheel volume to adjust it while your phone is ringing.
But what I still can't figure out is how to turn down the volume of the prompts when you hit the off-hook button or the talk button. That lady is too loud!
I did find the TSB concerning "System outgoing call volume adjustment", but that didn't seem to work on this system.
Any ideas?

 

OK, I'll go ahead and post my own solution in case others were lost too...

If you look in the owners manual, it shows under "Setup", is a "System Setup" menu. Under that menu is "Guidance Volume" which is what I was trying to do. Problem is, when you walked through the voice prompts, "System Setup" was never an option. The way I was able to get into System Setup was using the "Tune-File" knob.

So, to accomplish this... Press the appropriate button to prompt a voice command. When prompted, say "Setup". At this point go to the "Tune-File" knob on the right side of the stereo unit, and rotate it one click at a time until it says "System Setup" on the screen. Now push the knob to select. You will then rotate the knob again until it says "Guidance Vol" and push the knob to select.

The prompt will then tell you the volume that its set at as an example, and you can rotate the knob to adjust it up or down. Once you have it set, push the button again to select. Then hang up.

I set mine at 2, and sounds about right. Why couldn't Toyota have made this a little more intuitive???