That's the way its designed. There's no camera in the front, so you'll get warnings from the front sensors but no view. The cameras are on the bottom of each side mirror and on the rear license plate frame.
2014 X5 35d (Performance Center delivery May '14)
2015 M235i Cabrio
2000 328i sedan (UUC suspension - still the favorite)
SOLD! 2008 E90 M3 SOLD! 1991 325iX (both great)
2012 Mini Cooper - (wife's car)