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Marty
Marty, Mercedes Technician
Category: Mercedes
Satisfied Customers: 53774
Experience:  Bosch Certified Master Tech. Over 35 years experience.
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Mercedez Benz S430: mercedez benz 2001 S430 The has started

Customer Question

mercedez benz 2001 S430 The has started making this rattling sound when starting and while excelarating. like something is loose. I checked my oil and it was low.
Submitted: 1 year ago.
Category: Mercedes
Expert:  Marty replied 1 year ago.
Hi, welcome to Just Answer. My name is***** you are hearing a rattling sound from under the driver's seat the problem will most certainly be a bad catalytic converter. It is very common for one of the two converters to break apart inside and start to rattle. You should correct the oil level in the motor but your problem will be a bad catalytic converter.
Let me know if you have any questions. Please remember to rate my service so I can receive credit for helping you.
Marty