To access the hidden menu :
1. Apply the parking brake
2. Insert key to ACC position
3. Hit the MAP button to power up to the first screen that prompts for english or french language..
4. While on the english/french screen hold down the NAV controls INFO button while you TURN your steering wheel TAIL LIGHT SWITCH on and off 3 times, OFF,ON,OFF,ON,OFF,ON,OFF.
To access the second one. You do the same thing (press info and switch on, off 3 times) during the first hidden menu
Is it possible that tip works only for DVD sat nav