Serpentine belt: It is made up from a material similar to rubber that allows certain engine parts to come into contact with each other and makes them spin. Some of them are the alternator, the hydraulic power steering, and the water pump.
Just ran battery down parked and almost didn't start when it started it sputtered and missed util battery regained 12 volts but check engine light stayed on
Within 30 mins of running my 2007 BMW x5, it starts jerking and seems like its going to turn off. I get the faulty engine indicator on the dashboard. Has anyone had this issue before?