The contact owns a 2014 BMW X3. The contact stated while driving at an undisclosed speed, the contact heard a rattling sound coming from the engine compartment, with the check engine warning light illuminated. The vehicle was able to be restarted. The contact received notification of NHTSA Campaign Number: 24V608000 (Engine and Engine Cooling, Electrical System); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was not contacted. The manufacturer was made aware of the failure. The approximate failure mileage was 158,897. VIN tool confirms parts not available.