Car Problem Reports

Mercedes-Benz C230 Oil Leak Into Wiring Harness From Camshaft Solenoid Switch

Mercedes-Benz C230 Problem
33 Reports
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Model Years Affected: 1997, 2002, 2003, 2004, 2005

Average Mileage: 104,520 mi (48,000 mi - 200,000 mi)


Oil can leak into the engine wiring harness from the camshaft sensor. If the leaky sensor is not repaired, the oil can migrate through the wires and possibly damage the engine control unit. Have the sensor and harness checked regularly.

  • camshaft leaking oil

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  • Visitor, , 49,800 mi

    Oil leaking into wiring harness from CAM sensor I am told by my mechanic today. I did find online however that this is a RECALL issue for this car and I am now taking into the Benz Dealer for repair and hope the Engine Check light goes off. This car has run perfectly since day one and really doesn't even appear to be running poorly with the light on. I run it on synthetic Mobil One 5-40 and change it regularly.

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  • Visitor, , 60,000 mi

    Routine maintenance check. MB fixed it and replaced the harness.

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  • Visitor, , 184,000 mi

    Oil leaked on to wire harness. There is a service campaign for this issue: 2009100001.
    Mercedes Benz dealership fixed the problem. Material and labor was about $6000. at no cost to me.

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  •  Rookie

    In the shop right now! They are describing this exact situation. I was trying to find the recall notice and found this!

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  •  Rookie

    I went to dealer for the recall (California) the replaced everything harness computer magnets the car had the same problem camshaft solenoid timing. They charge me 350.00 to see the chain tensioners that were perfect then they wanted to open the chain covers for 2800.00 I told them I didn't trust them, did some work I found they didn't replace the timing sensor intake on left side of the engine I ordered the part one bolt and replaced it, check engine light finally went out.
    Went back to dealer and they gave me back the 350.00 they charged me to see the tensioners and the chain.
    Don't trust dealers

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  • Visitor, , 90,000 mi

    Dealer is give us the running around. Change the CamShaft solenoid but does not want to change the wiring harness saying its not included in the recall.Anyone has any idea on how to get them to repair this know defect?

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  • Same issue at 80,000 miles on my 04 kompressor. Dealer changed harness adapters but didn't fix underlying cause of the oil. Refuses to help after fix it now or ask MB for help.

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  •  Rookie

    Oil leak into wiring harness from camshaft solenoid

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  • Visitor, , 80,000 mi

    oil all over the place, intermittent issues, now car will not crank & will not start.
    Found melt/scorch mark under some wires that pass over plastic in engine compartment.
    Found another part of wiring harness missing insulation only on the portion passing over a metal section in engine compartment.
    Serpentine belt now has what appears to be bubbling or blisters on the surface. Car has had hot or burning plastic smell for too long and dealer/shop attributes it to new parts wearing in. Problem is the smell never ceased!
    I am so thoroughly disappointed in what used to be a reputable vehicle manufacturer.
    Mercedes Benz is an empty shell of what used to be.

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