Vehicle has been well maintained and serviced on schedule at the dealership. There were no warning lights or indications on the dashboard prior to the incident. After the car sat idle all night, on the morning the next day, I tried to to start to car. There was big pop sound. Turned off the engine and restarted after a couple of mins and noticed, message on the dashboard indicating alternator fault. Opened the hood and noticed the serpentine belt has completely fallen off. This resulted in the power steering being completely disabled. Battery stopped charging. Very very luck that this incident happened when the car was idle. The car was impossible to drive as the steering was extremely difficult to turn. Secondly the battery stopped charging. The dealership service has no answer as to what causes this. Especially when the car has been through service just a few months ago. Very concerned if such issues happens on the highway at high speeds. How can a vehicle with such low mileage plus complete maintenance have such issues. Audi has so many inbuilt sensors and yet there was no indication something is wrong.

- Fremont, CA, USA