This is excellent information and I will be getting the app today. The only question is most of the dongles I have seen are Android only and not for a iPhone 5s. Has anyone used this product with an iPhone?
I did go to Autzone and he would not reset the CEL. They offered very little help and kept questioning why I di not take my car to a mechanic.
Thank you all for the great response.

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2009 3.0/ Cold Weather/ Premium/ Rear Heated Seats/ Parking Sensors