Driving a Volkswagen car with a Fan Motor issue can be a very dangerous situation, as the fan motor helps to ensure the engine does not overheat. With the lack of proper airflow and cooling, the engine could overheat or even catch fire, both of which would cause severe damage to the vehicle and potentially cause an accident. It can even lead to an engine seizure, which could prevent you from steering or braking. If a Fan Motor issue is present, it is highly recommended that the vehicle not be driven until the issue is rectified.