Two problems related to radiator have been reported for the 2001 Audi S4. The most recently reported issues are listed below.
Vehicle is experiencing radiator coolant leakage into engine oil. This is causing accelerated wear of components lubricated by the engine oil. Unless corrected, this contamination will lead to failure of the motor. The vehicle was inspected and tested by an Audi service center with no cause identified or solution proposed. Audi of America is not taking any action to address this problem.
Vehicle is experiencing radiator coolant leakage into engine oil. This is causing accelerated wear of components lubricated by the engine oil. Unless corrected, this contamination will lead to failure of the motor. The vehicle was inspected and tested by an Audi service center with no cause identified or solution proposed. Audi of America is not taking any action to address this problem.