It is important to have a thermostat in good order for the safe regulation of the engine temperature in Audi. However, it can fail with differing degrees of extremity. Identifying the source & fixing the issue on time are essential to prevent the hassle from taking out of the engine. Asking a trained pro to execute the maintenance errands effectively. Scan this video to know more about the cause & symptoms of failure.
https://www.youtube.com/watch?v=_i82Knecu7k