Volkswagen Tiguan 2014 Problems

What's happening is that the car's computer is detecting a problem and putting it into limp home mode. The idea is that you are then able to drive on at a reduced speed to get it to a dealer for repairs. What's not happening is that the dealer is not identifying a problem when they get to see the car and check it on their diagnostic equipment. It's difficult to find the cause of a problem when it is not evident when the mechanic is doing the check. There is likely to be a problem with a sensor or a wiring connection issue. The only way to find the problem when the diagnostic gear isn't telling what is causing it is to do a thorough manual check. I would be taking the car back to the dealer and telling them that you won't be taking it back until the car is fixed.