How do you repair the fan on a Mercedes 190e?

To repair the fan on a Mercedes 190E, first ensure the engine is off and cool, then disconnect the battery. Remove the fan shroud by unfastening the clips or screws, and check for any damaged blades or a faulty motor. If the fan motor is defective, replace it by removing the old motor and installing a new one, ensuring all connections are secure. Reassemble the shroud, reconnect the battery, and test the fan operation.