The contact owns a 2011 Cadillac CTS. The contact stated that while driving approximately 30 -35 mph, there was a rattling noise detected from the front end of the vehicle. The brake pedal was applied but, failed to respond and crashed into a 2018 Ford. There were no reported injuries or fire. A police report was filed. The vehicle was towed to an independent lot. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The approximate failure mileage was 45,000.