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PostPosted: Tue Jan 26, 2016 9:11 pm 
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Joined: Sun Apr 13, 2008 8:24 pm
Posts: 325
I thought it would be fun to see what type of list we can come up with hidden menus/test modes thats not commonly known. If you know of any, please share. Just a warning, use these at your own risk.

Ford:
Holding down the trip while starting the vehicles will put the instrument cluster in "engineering mode"

Holding down buttons 3 and 6 on radio while on will put it in test mode

OnStar:
On never GM vehicles, if you hold down the black button (not the red or blue), that should take you into programing mode

Toyota:
2003-2009 Prius and others: Turn on the car (hit the power button twice without touching the brake pedal). While holding down the info button, flip the headlights on and off 3 times. Is process also works on other nav units like the 4Runner. Just turn on the ignition to on and follow the instructions above.

Stereo: To enter test mode hold down the "1" and "6" preset buttons and hit the "DISC" button 3 times. You should get 3 beeps and all elements on the LCD display should be on. Using the "SEEK TRACK" button should cycle through various codes for each component of the system. To exit test mode hold down the "DISC" button for 2 seconds or turn off the key.

Motorola (Service Mode):
HTs: turn radio on and repeatedly hit the the button above the PTT until you hear chirps
XTLs: turn on the radio and repeatedly hit the home button until you hear chirps
MCS2000: Turn on radio and repeatedly press the "monitor" button until you hear chirps

LG/Kenmore washing machine:
Hold down "spin speed" & "soil level" buttons, press Power while these buttons are being held for a test mode

Soda machines:
Ones with a keypad on the front, press "4231" will go into sales mode.

Comcast:
Start by turning your cable box off with the remote control and immediately pressing the "Ok / Select" button for service menu
X1: Hold down Exit button for 5 seconds, hit down arrow twice & push 2 button for a service menu

Receipt and older printers:
Hold down the feed button while powering on
Sometimes holding down select or "on-line" while powering up sometimes works

Garmin:
Nuvi: hold your finger on the time in the upper right corner for more than 5 seconds

Fuel pumps:
At Costco if you press "clear then enter" about 3 times, it will come back to you with "system ok"


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