I own a 2006 Jetta with 59,000 miles on it. The exhaust warning light came on the other day. I also noticed that the turbo (or maybe some type of fan) is still running after I shut my car off. I am trying to determine the possible cause of this problem. I previously owned a passat that had the same issue when the car was turned off and that car began to have several different exhaust and emissions problems. I recently took my car to Sears for an oil change and the window tag said they put regular oil instead of synthetic oil in the car. I took the car back within 48 hours and had them replace the oil but now I'm wondering if they just pretended to replace the oil and never actually did. Could this be a potential cause of my exhaust problem. Any other known exhaust problems with 2006 Jettas? I've heard something about an exhaust fan problem with this particular year / model. Thanks for your help.
What you here running after you shut your car off is just your exhaust fan. Your turbo will not continue to run. As for the oil change effecting the exhaust this may be an issue. IF they actually drained the regular oil and then put synthetic then you should be ok. But if they just put more in on top then they may have messed up your Cat converter...good luck with everything
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