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Mercedes-Benz ML500 Problems

Worn spark plug wires may develop micro cracks in insulation on Mercedes-Benz ML500

Problem Description and Possible Solution

As the spark plug wires age and are exposed to heat cycling, they start to develop micro cracks in the insulation around the resistors, which causes misfires and poor fuel economy.

(4 people reported this problem)

Mercedes-Benz ML500 Vehicles With This Problem

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Average mileage: (–)
4 model years affected: 2002, 2003, 2004, 2005
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