IIDTool Car Config File Editing
From DISCO4.COM Knowledge Base
Activate 4x4 Info
Discovery 3
Navigate to Main Menu -> Car Config -> Select ECU -> Audio System -> Type - Multimedia Module.
Press + to set to High.
Press back multiple times to exit the Car Config menu.
Change will be detected and you will be prompted to confirm. Follow the on screen instructions (LEAVE THE KEY ON while the LCD display goes off for a few seconds etc etc).
When done, for 4x4 Info to be available, you need to turn the car off and let the parking brake light go out. Upon restart (nav screen shows LAND ROVER logo), 4x4 info will be available.
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