2003 S430 Catalytic Converter
Thread Starter
Newbie
Joined: Aug 2013
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2003 S430
2003 S430 Catalytic Converter
I just discovered the left catalytic converter is defective and has a severe rattle. The car has 70,000 miles on it and is 10 years old so I don't believe their is any warranty on the converters. I have found a shop that is willing to cut out the converters and replace with new pipe (thus eliminating the converters) will this create an issue with the O2 sensors?
MBWorld Fanatic!
Joined: Jun 2002
Posts: 1,284
Likes: 37
From: North Carolina
2003 S500 - Toyota Corolla (in the rain)
I might be wrong but I thought the converters had a warranty of at least 80,000 miles no matter what year of the car. You might want to check with you MB dealer before you spend a lot of unnecessary money. If the dealer says no I would call the Mercedes line. I believe the number is 800 3676 3723 in the US.
Good luck.
Good luck.
Senior Member
Joined: Apr 2012
Posts: 432
Likes: 96
From: Just north of Detroit,Michigan
2012 E350 4Matic P2
To answer your question of whether removing the cats would affect the O2 sensors. If it is the rears that are rattling then they are downstream of the O2's and will not affect them. However, removing the forward Cats may be another issue.
