NHTSA Complaint #11676996 — 2016 BMW 535D

On [XXX], the coolant connector flange on my 2016 BMW 535d (VIN: [XXX] ) catastrophically failed, causing complete coolant loss. I immediately contacted BMW of Las Vegas and was instructed to drive it in despite fluid visibly leaking through the undercarriage. The next day, [XXX], BMW performed Recall 21V-907 (EGR cooler replacement), which involved draining and reconnecting the coolant circuit—but they left the failed flange in place. The failed flange connects directly to the new EGR coolant return hose installed under the recall. BMW had full access to the part but chose not to inspect or replace it. The dealer submitted a consequential damage claim to BMW North America, which was denied. The vehicle remains at the dealership unrepaired. This failure poses serious safety risks. Driving with active coolant loss could cause overheating, engine failure, or fire. Had I not stopped, this could’ve led to mechanical catastrophe. BMW re-pressurized the cooling system into a visibly broken flange, creating an unsafe condition. The failure was confirmed by BMW technicians and documented in a repair order. No warning lamps were active at the time of failure. I currently have an open case with BMW North America, but no contact has been made. I am requesting NHTSA review this matter as BMW failed to fully remedy a safety defect and ignored collateral damage tied directly to the recalled system. The failed part is available for inspection. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)