Catalytic converter failure is common and may cause a Check Engine Light to illuminate.
Car Problem Reports
Mercedes-Benz E500 Check Engine Light on Due to Failed Catalytic Converter
Mercedes-Benz E500 Problem
6 Reports
Model Years Affected: 2003, 2004, 2005, 2006
Average Mileage: 67,500 mi (55,000 mi - 80,000 mi)
Verified
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Visitor, 2003 Mercedes-Benz E500, 55,000 mi
Check engine light came on. Took whole day for dealer to diagnose it.
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