The contact owns a 2018 BMW 330E. The contact stated that while driving at an undisclosed speed, there was an abnormal squealing sound coming from the engine compartment, with the check engine warning light illuminated. The vehicle was taken to the dealer but was not diagnosed or repaired. The manufacturer was made aware of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 55,000.