Actually, you could have a Navigation monitor without the MKIV drive, as the TV Tuner module can output graphics.
I believe TV without Navigation was an option outside of North America. It would require recoding of the car and some of the modules.

Having the car coded for DSP only brings up the additional DSP menu item in the navigation display. The DSP amp would need to be installed (and connected to the i-bus) for the menu item to remain.

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2010 X5 3.5d: SOLD, but miss the torque...
2004 X5 4.4i: SOLD, but served us well