What should I do if my vehicle exhibits erratic engine performance?
If your C-Class shows irregular running conditions, turn off the ignition immediately. Check that there are no obstacles in contact with the undercarriage and have a qualified Mercedes-Benz Center inspect the vehicle (Page 147).
From the official Mercedes Benz Mercedes Benz C Class 2008 2014 Fuses And Fuse Box Diagram And Location manual, page 5
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