One problem related to radiator has been reported for the 2002 Subaru Forester. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2002 Subaru Forester based on all problems reported for the 2002 Forester.
External coolant leak due to failure of head gaskets in engine on a 2002 Subaru Forester with 50,000 miles. Results in coolant dripping onto exhaust system and other components resulting in strong odor. Also creates possibility of low coolant causing overheating, engine damage and possible engine fire due to excessive heat. This problem is known to Subaru however, the only recommendation offered is to add a sealer to the radiator coolant. According to several mechanics I have consulted, this will result in clogging of the radiator and heater core passages further causing overheating problems. The only fix for this problem is replacement of the head gaskets something Subaru refuses to do.