Coolant Hoses May Fail Unexpectedly on Mercedes-Benz S420

The cooling system hoses may fail unexpectedly. The hoses can look good on the outside, but the rubber can degrade and erode on the inside. If not carefully checked, the hoses can burst at any time.

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Average mileage: (–)
6 model years affected: 1994, 1995, 1996, 1997, more1998, 1999
6 people reported this problem
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