Problem Reports » Rough Running Motor/Lack of Power Due to Coil Pack/Ignition Module Failure

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Mercedes-Benz S600

 

Report: Rough Running Motor/Lack of Power Due to Coil Pack/Ignition Module Failure

Mercedes-Benz S600 Problem
19 Reports
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Model Years Affected: 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010

Average Mileage: 79,988 mi (33,520 mi - 156,000 mi)

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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.

  • Visitor, 2006 Mercedes-Benz S600, 60,000 mi

    Same issue with the rough running. Three differnet dealerships, three different repairs suggested. control bank (1800), ignition coil (1800) and new spark plugs (1400). None guaranteed to stop the problem so I waited. Figured if I wait long enough, it will be constant and easier to diagnose. Runs fine when first starts, then starts trembling, enginge light comes on, misfiring, low power. Then I noticed the temperature. Always well within operating temperature of the guage, but, while it runs fine at 80C. When I hit traffic, hot days, it goes up near 100C. If it stays there, I can count on the misfire issues. When it's cold, I have the heater on and am doing 80 mph, it stays at 80 and can run fine for hours. Soon as I hit traffic, temp goes up and I misfire. Thermostat? Stay tuned...

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  •  Rookie

    yes, yes car engine shakes and not much drving power when driving the car, cost $1800

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  •  Rookie

    When I start the car every morning and start out from a stop , the car misfires and looses power and also smells heavy of fuel odor..

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  •  Rookie

    coils are dead, ruff running

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  • Visitor, 2005 Mercedes-Benz S600, 65,000 mi

    Rough running, hard shifting, delayed acceleration. Mechanic diagnosed failure of both coil packs for a whopping $4,000 repair bill. Unconscionable at this mileage...

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  •  Rookie

    check engine light on, running very rough, low rpms, not much power, shifting hard and sounded different... was afraid it was transmission, but my mechanic diagnosed one bank of ignition coil pack bad, part $1,200, labor $350, diagnosis $100.

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