Two problems related to rearview system braking have been reported for the 2020 BMW X5. The most recently reported issues are listed below.
My 2020 X5 is equipped with rear cross traffic warning however it does not warn when traffic is crossing. The car will be in reverse, I can be very close to either a car or a person and there are no audible or visual warnings until the object stops moving or is within inches of the vehicle. I have taken it to my dealership several times however they are stating its in full working function even though it does not do what BMW advertises how that system should work. This is both very dangerous and false advertising by BMW! I have videos to prove this claim however the upload section doesn't allow videos.
Backing out of my garage to a street with a 25 mph speed limit, the vehicle is supposed to alert the driver with a warning sound and or brake if a vehicle is crossing behind the vehicle. This feature has never worked and the dealer can't find any problem. This condition has been report on several internet websites with no resolution.