settings in the settings it says "NAV Volume", don't do it with people in the car b/c they always make sex jokes b/c the woman is like "softer, softer...."

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2006 BMW X5 4.8is Lemans Blue/Beige/Dark Maple
-Nav, Comfort Seats, Heated Steering Wheel,
Rear Airbags, AUX Input
2009 BMW M3 Space Grey/Black/Carbon
-all options