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2012 C300 Sport problem this morning

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Old Feb 18, 2015 | 08:18 PM
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2012 c300
2012 C300 Sport problem this morning

My 2012 C300 sport (30k miles) was sitting for a few days and last driven when it was over 60 degrees. I started it this morning (air temp was zero) and the car shutered when it started. My check engine light went on and the motor then smoothed out and seems to run great as usual.
When will the light turn off ? I cycled the key some 10 times today thinking that would do it.

Thanks all
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Old Feb 19, 2015 | 08:05 PM
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Update. Just went to autozone to pull the code and it was a cylinder 3 misfire. They cannot clear codes due to their insurance policy, so there it sits glowing on the dash. Pulled negative cable on battery for 10 minutes and that didn't clear it either.
Car runs great, just want light to GO AWAY.
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Old Feb 20, 2015 | 03:34 PM
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I decided to buy my own handheld scanner. I have 5 days before I get it. Looking forward to the "erase" button.
The light is like an ex-wife, it just wont go away.
Actron CP9125

Last edited by Blackroot; Feb 20, 2015 at 03:37 PM.
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