NHTSA complaint #11758544

Owner complaint summary

2022 BMW X3 M40i. The Driver Assistance system appears to activate normally after startup with no warning or indication that a fault is present. However, within approximately 3–5 minutes of driving, a Check Control message appears stating “Driver Assistance limited. Camera vision.” The vehicle then identifies affected systems including Pedestrian Warning, Frontal Collision Warning, Side Collision Warning, Automatic Lane Change, Active Blind Spot Detection, and Steering Assistant. A separate message states that Active Cruise Control is reduced and there may be no brake intervention for stationary vehicles. The safety concern is that the system can appear active and available before the warning appears, even though at least some driver-assistance functions may already not be operating. Before the warning was displayed, I observed that Steering Assistant/lane-keeping did not intervene and I crossed out of my lane without steering correction or a lane-departure warning. There was no prior warning that the camera-based system was malfunctioning. I cannot confirm whether the other affected safety functions were operational during this interval. A BMW dealer inspected the vehicle and physically found the KAFAS camera hood/trim warped from heat. The warped component was removed and shown to me, and the dealer ordered a replacement. BMW has issued SIB 66 13 23 addressing KAFAS camera hood deformation on affected vehicles. Fault memory also contained KAFAS codes 800ABF, 800ABE, and 800AC4 for camera field-of-view disturbance and calibration failure. This creates a potential safety defect because the driver may reasonably believe lane-keeping and other camera-based safety systems are functioning until the vehicle detects the failure several minutes later. The vehicle/component can be made available for inspection