catalytic converter question. e63








I replaced my cats after getting rattling noise, then stinky egg smell after driving it. Ended up getting aftermarket cats from performance curve online




OP could've looked this up for yourself or asked your warranty company if the Federal laws on emissions cover it:
If you are in any State other than California, consider switching to aftermarket cats .. way cheaper.
Then looked this up on Mercedes website. Of course, if you read it closely "certain parts" are covered … which means other parts are not or possibly certain parts are covered for even longer … good job from the Lawyers on wordsmithing

I replaced my cats after getting rattling noise, then stinky egg smell after driving it. Ended up getting aftermarket cats from performance curve online
Last edited by turbo97se; Feb 6, 2014 at 09:49 AM.




8 years or 80,000 miles (whichever first occurs). If you are a resident of an area with
n Inspection and Maintenance (I/M) program that meets federal guidelines, you are
ligible for this warranty protection provided that:
• Your car or light-duty truck fails an approved emissions test; and
• Your vehicle is less than 2 years old and has less than 24,000 miles (up to
8 years/80,000 miles for certain components); and
• Your state or local government requires that you repair the vehicle; and
• The test failure does not result from misuse of the vehicle or a failure to follow the manufacturers’ written maintenance instructions; and
• You present the vehicle to a warranty-authorized manufacturer representative, along with evidence of the emission test failure, during the warranty period.
http://www.epa.gov/obd/pubs/420f09048.pdf
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Remember these car make a different sound when cold until the air pump shut off...
Do you have a CEL?



I am not sure if MB plug left bank to right bank can be swap...
but can not see CATs going bad just like that...
you gots to have a CEL...of lots of misfiring to damage the CATS




I am not sure if MB plug left bank to right bank can be swap...
but can not see CATs going bad just like that...
you gots to have a CEL...of lots of misfiring to damage the CATS



If the CATs are bad a CEL should show up..
I think they must have drop a heat shield make some noise and to rip you off...
Dealer is the last place to take your car unless it is covered...
ANY Dealer..MB BMW VW NISSAN HONDA>. dont care.. All are looking for a prey







