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Mercedes-Benz S320 Problems

Noise and/or Smoke From Drive Belt Area on Mercedes-Benz S320

Problem Description and Possible Solution

The emissions air injection pump can seize, causing a loud squealing noise followed by smoke from the drive belt. If the engine is not turned off, the belt will break, turning on the alternator/battery warning light.

(6 people reported this problem)

Mercedes-Benz S320 Vehicles With This Problem

RepairPal Verified
Average mileage: (–)
6 model years affected: 1994, 1995, 1996, 1997, more1998, 1999
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Brake problem? Or maybe a faulty head gasket cylinder?
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