Engine misfires (rough running) and lack of power are commonly caused by ignition coil pack or ignition module faults. Proper diagnoses should isolate the cause and prevent unnecessary replacement of good parts.
Car Problem Reports
Mercedes-Benz SL600 Rough Running Motor/Lack of Power Due to Coil Pack/Ignition Module Failure
Mercedes-Benz SL600 Problem
Average Mileage: 37,600 mi (32,000 mi - 44,000 mi)
Visitor, 2004 Mercedes-Benz SL600, 42,000 mi
Very often occurring problem
Visitor, 2005 Mercedes-Benz SL600, 32,000 mi
Visitor, 2004 Mercedes-Benz SL600, 38,000 mi
engine light on, misfire codes for 6 cylinders, turn engine on and off take care of the problem temperary and happen again, now happen all the time.
failure left side misfire. Codes 300, 307,308,--9,10,11,12.