I have 93k miles on my Touareg Hybrid. Dealer diagnosed Check Engine Light as catalytic converter inefficiency and recommends replacement of both sides. I did not get the specific codes, but Dealer reset the light. Sold me some G-001-780-M3 Additive (cataclean?) and recommended that I run it in Sport mode or manually shift to maintain higher RPMs. About 200 miles later (obviously less than a tankful of additive used), engine light switched on again.
Dealer estimate to replace both catalytic converters is $3500 (and recommends replacing supercharger belt for $225).
Any recommended options? Any experience with after market catalytic converters? How likely is O2 sensors failure rather than catalytic converter failure? Is this a "dealer" repair or should I be looking at non-dealer options?
Dealer estimate to replace both catalytic converters is $3500 (and recommends replacing supercharger belt for $225).
Any recommended options? Any experience with after market catalytic converters? How likely is O2 sensors failure rather than catalytic converter failure? Is this a "dealer" repair or should I be looking at non-dealer options?