NHTSA complaint #11590006

Owner complaint summary

Rear cross traffic alert does not work in the subject car. BMW Owners' Manual describes a system that should alert from two parking spaces away while backing out, the system gives no alert as described. What follows is my post to a BMW Owner's group where members are discussing similar issues with their vehicles. This problem is a large one and needs to be investigated. Rear cross traffic alert is a critical safety system. "Regional field service rep spent several hours last week with the car. Made some updates/integrations and declared the systems now working. I did some controlled testing in a parking lot in reverse with both brake applied and rolling in reverse. ZERO visual or acoustic alert from the rear cross traffic alert system. I am convinced BMW and the dealers are trying to cover up this colossal failure of a very important and basic safety feature BMW says they sold us! I will give corporate one more try and then will report to NHTSA that BMW has a major defect in their cars." I am scheduled to talk with the regional BMW engineer in the next two weeks. Is there a means for me to update this submission?