With this secret menu you can see any fault codes, test all the panel buttons, turn on the rear camera and look at Nav data. I'll post some pics in a few days. But, for those of you that can’t wait to try it I'll describe it. *NOTE* This will lock you out of the radio controls. Attempt at your own risk!
I have a 2004, 3rd gen NAV running version 3.1. There is an easier way to get there then how I will describe it below but this is the easiest way to describe it. Here is how to get to the secret menu:
- Press INFO button and then "Trip Information" (This is to bring up a background to give a reference for where the hidden buttons are. Once you know where they are you can delete this step)
- Press DISPLAY button
- The hidden buttons are the A in "After Refueling” and the C in "Cruising Ranging." Press A and C in the following pattern. A,C,A,C,A,C. (That should be it, but just keep going until the menu pops up)
- The Service Menu should appear. The only thing I wouldn’t mess with is the Memory Copy and paste stuff.
- While in this menu you can also monitor trouble codes. Once the system has done a self check all the buttons at the bottom of the screen will turn blue indicating that you can select that option. To check all active trouble codes select LAN Monitor in the lower left corner. The screen should appear.
To see the trouble codes push the CHEK button next to the system that has a CHEK button availble. If the are no faults/codes them the button will say "no err" and you wil not be able to select it.
- To get out of the menu press and hold DISPLAY button for 4-5 Seconds. Normal screens should appear and the radio controls are released. If that fails turn off the car and restart.
Secret Menus And Nav Hacks.
in 99 - 03 Lexus RX300
Posted
Is there any way to get this to work on a Gen 4?