Exhaust Leak From Front Catalytic Converter on Mercedes-Benz ML350

An exhaust leak may develop due to cracked welds on the front catalytic converter. Replacement of the catalyst is recommended; re-welding of the catalyst is discouraged because it is an emissions device.

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Average mileage: 150,000 (150,000–150,000)
3 model years affected: 2003, 2004, 2005
4 people reported this problem
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problem details
2003 Mercedes-Benz ML350 150,000 mi,
Passenger side exhaust leak. Weld cracking at converter.