One problem related to steering wheel vibrate has been reported for the 2012 Volkswagen Tiguan. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Volkswagen Tiguan based on all problems reported for the 2012 Tiguan.
Car was parked in an outside parking lot after returning from a 160 mile trip. After my luggage was unloaded into my apartment, I went back to the car to go park it in the detached garage. Upon starting the car, the steering wheel began to shake vigorously. The shaking stopped after a few seconds and the steering wheel was locked in position and could not be turned. At that point the steering power failure light came on along with a loud warning sound (I have a video of this event that I can provide via email. I am not able to upload it here, though). I had no choice but to leave the car as it was. I checked the car the next morning an it turned on without issue. Later that day I took the car to the nearest vw dealer. I showed them the video of what happened and they were immediately concerned, but where not able to offer me an appointment until the following week. The next week (today), I dropped the car off at the dealer for diagnostics. I received a call later informing me that the found that there was a failure of the steering rack and that it needed to be replaced. They stated that it is a major hazard and that the do not recommend driving the car. If I did want to drive the car I would have to sign a waiver of liability.