They actually had a new O2 sensor installed and said the car failed diagnostic testing with the new O2 sensor, but how exactly they traced it to the ME unit I do not know. I am bringing it to an indie for a second opinion next time the engine light comes on.

And yes I do have the green and red lights on my rearview, so this means I HAVE TO get a ME control unit from MB?

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2007 Corvette Convertible Torch Red
1996 MBz SL500
2008 Harley Davidson Night Rod Special