2011 bmw 328i making loud squealing noise under hood ahen driving.
My car has 99867 miles.
My car has an automatic transmission.
Hi there. In most cases, when you hear a constant squealing noise while driving it’s due to a serpentine belt that has become loose and need to be replaced. It could be a different belt, pulley or the power steering system that is causing the noise, which is why it’s a good idea to have a professional mechanic come to your location and complete a car is making a noise inspection.
Have a car question? Get free advice from our top-rated mechanics.
Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing