Question on the orm nav monitor:

I just replaced the monitor with a new sharp unit from ebay. The BMW logo showed up when I plugged in the unit, but the unit won’t power on when I press th power switch.

Am I missing something? Perhaps I need to enter the radio code first?

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2003 X5 4.6is Estoril Blue, acquired March 2018
2013 128i M Sport 6 MT Space Grey daily driver
2010 535xi 6 MT Barbera Red