This is to use your HVAC as sensor scanner
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1. Turn ignition switch to OFF.
2. Press and hold both the AUTO and MODE buttons, then start the engine.
3. After the engine starts, release both buttons. The display panel control unit will flash the sensor number and then the value for that sensor.
4. To advance to the next sensor, press the A/C button

Sensors:
1: mode positioning (BIT)
2: in-car temp (C)
3: outside temp (C)
4: Solar Radation: Dark=00, Flashlight= 04, Cloudy=10, Sunny=65 (10kcal/m^2*H)
5: Evapotator Outlet air temp (C)
6: Humidity sensor value (%)
7: Heater Core Temp (C)
8: Air Mix opening (the lower the cooler) (% of opening)
9: Recirculation Opening (% of opening)
A: Vehicle Speed (km/h)
B: Engine coolant temperature (C)
C: A/C revolution feedback (100 RPM)
D: Vent air Temp out (TAO) (C)
E: Solar Radiation azimuth (navi only) (10 deg)
F: Solar radiation angle of elevation (navi only) (10 deg)

I thought this was kinda a cool thing to play around with.

Sweet, thanks! Is there a way to return to normal HVAC display, or do you just have to shut the car off?

No. The only way to return is to shut off the car.
No prob.

hey i'm able to disable via depress AUTO button

mine 4: Solar Radation: 02 (meaning?)

btw colby which page in the manual u find these?



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afternote:-

i've found the pages 21-16

item 5
To cancel the sensor input display mode, press the AUTO button or turn the ignition switchto LOCK (0)

This is cool. i wonder if they put any easter eggs in there as well- say "Invaders" game on that display )