2012 Audi Q7 Electronic stability control Problems

“Crank pulley hard rubber core or so called harmonic balancer broke and serpentine belt fell off causing to loose power steering and not be able to steer. I was pulling out of a highway ramp and thankfully other cars were able to avoid me due to the low traffic at the time of the incident.”

“Pulling out making a left turn from a stop, vehicle suddenly hesitated, power to engine was intermittent and jerky, and acceleration was poor to none. Many warning lights came on (stability, tire pressure, anti-lock, etc.). Steering wheel was also shaking slightly (power steering motor?). Condition continued for about a mile while vehicle proceeded to home. Turning vehicle off and on resolved the problem. On initial call to dealership I was told they do that sometimes; you need to turn off/on to reboot system . …”