Navi Tricks -- Change bluetooth name, PIN, calibrate screen & more
 

STARTING PROCEDURE
1. Start the engine.
2. Turn the audio system OFF.
3. While pressing the “SETTING” button, turn the volume control
dial clockwise or counterclockwise for 40 clicks or more. (When
the self-diagnosis mode is started, a short beep will be heard.)
• Shifting from current screen to previous screen is performed
by pressing the “BACK” button.

That brings you in the hidden screen and allows you to change some options.
I uploaded the screenshot from the service manual , page AV-172...enjoy!

ejrives

cool :P thanks haha I'll keep this in mind.

since the general public doesn't really read most of the manual you should just make this a thread for posting random little quirks the Z has in store for us. :P

as this is from the service manual (not the normal manual) the general public rarely even has a chance to be exposed to this information.

OP, Nice find! :)

Cool stuff, too bad the thing we can do arent that great.