Coolant Leak/Overheating Due to Radiator Leak on Mercedes-Benz S420

A coolant leak may develop form the Radiator due to degradation of its plastic components. Replacement of the failed radiator will be necessary.

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Average mileage: 178,000 (178,000–178,000)
6 model years affected: 1994, 1995, 1996, 1997, more1998, 1999
7 people reported this problem
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problem details
1994 Mercedes-Benz S420 178,000 mi,
Loss of coolant on interstate, the overheating. replaced radiator, coolant, and thermostat: problem solved