July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

LCD Inspection

With audio on, first press the POWER button and hold it, then press the SEEK button (upper) for approximately 1 second.
Inspect the LCD according to the figure:

Fig 1: LCD Inspection Table
Courtesy of MAZDA MOTORS CORP.
Turn the audio off or the ignition switch to the LOCK position to stop the diagnostic assist function.