Check Belt Tensioner When Replacing Water Pump on Mercedes-Benz E320

Problem Description and Possible Solution

A coolant leak may develop from the water pump. When replacing the water pump, the drive belt tensioner should be inspected and most likely replaced as well.


Problem Data
RepairPal Verified
Average mileage: 188,688 (165,000–212,376)
4 model years affected: 1994, 1995, 1996, 1997
7 people reported this problem
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Noticed coolant smell following short drive. Mechanic found evidence of coolant leaks coming from water pump. Pump replaced and belt tensioner replaced at same time. Problem corrected.