Alternator/generator/regulator problems of the 2010 BMW X5

The engine belt idler pulley bolt broke causing a sudden loss of power steering when the serpentine belt came off the alternator and power steering pump. This is the same problem associated with recall 12v550000 a few years ago. The dealer said the vehicle was fixed under the recall but it was before I owned it so I don't know for sure. I believe the recall should be reinstated. The vehicle was moving on a residential street at less than 25 mph and my mom was driving. If she had been going any faster she would have crashed.