My guess is that the biggest market for a rear view camera in E70 X5s is people who do NOT have Navigation. Simply because (at least in 2009 and 2010) the only way you could/can get the OEM rear view camera was as part of the Technology package which included Nav.. Yes I know you could/can order NAV without the camera but my guess is that not many people, and almost certainly no dealers, ordered Nav standalone.

So I'd be very interested in an after market rear view camera but ONLY if it was plug and play with the existing wiring harness AND worked with the smaller non-NAV iDrive LCD screen on a 2009 35d.

Funf Dreisig