You will be charged lots of money for your and the Navigation System with TV-Function if you want to enjoy your passengers or co-driver with TV whilst driving.
The TV tuner is very expensive. But you can also realize the TV activation function with inexpensive Super Star C3 Diagnostic system (top version only).
NOTE:
TV activation only fits for vehicle models which had TV modules. Following are the TV Activation for all ; including region free DVD and Seatbelt acoustics deactivation.
TV activation function as well as SRS, ABR, SBC etc special functions are located under Super Star C3 multiplexer’s (ONLY) XENTRY software program.