The contact owns a 2019 BMW X3. The contact stated that upon starting the vehicle, the message ‘Driving Assistance Reduced and Pedestrian Warning not Working’ was displayed on the instrument panel. The contact stated that while driving 40 MPH in stop and go traffic, the Collision Warning feature failed to function as intended. The contact depressed the brake pedal to stop the vehicle. Additionally, the contact stated that the rearview camera was not working as intended. The vehicle was taken to the dealer, where it was diagnosed that the KAFAS (Camera Assisted Driver Assistance Program) system was heated and needed to be replaced. The vehicle was not repaired. The contact related the failure to NHTSA Campaign Number: 21V096000 (Back Over Prevention). The manufacturer was made aware of the failure and advised the contact to file a complaint with the NHTSA Hotline. The failure mileage was approximately 62,000.