One problem related to radiator has been reported for the 2002 Mercedes Benz C230. The most recently reported issues are listed below.
The contact owns a 2002 Mercedes Benz C230. On October 15, 2008, while driving 65 mph, the vehicle suddenly decelerated to 15 mph on its own. The vehicle was towed to the garage. It was diagnosed that the radiator failed and coolant fluid penetrated the transmission reserved fluid. The mechanic replaced the radiator and cleaned the transmission at the cost of $5,000. The mechanic stated that the transmission will eventually also need to be replaced. The failure mileage was 56,146 and current mileage is 59,000. Updated 02/24/09. Updated 02/25/09.