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MB dealer called me and offered a free inspection for my 2014 ML350. After the inspection, I got a sevrice list as attached picture.I will change the brake rotors and pads. The transmission was get service (transmission fluid changing) two years ago. My question is for the Line E: should I change all the camshaft solenoid? I saw there are two Solenoids were leaking. Should I change the camshaft sensors? If I reseal the cam cover，what kind of sealtant to choose? Thank you advance.
For the front cam cover reseal part numbers, please see the attached invoice from the dealership that had performed the service on my car the day before I bought it pre-owned from them in 2021. You can certainly replace the camshaft magnet solenoids with the latest revision (Mercedes-Benz part#: A 276-156-07-90), but, at minimum, I would also install the harness extensions to avoid potential problems with oil getting into the harness from the magnet solenoids, in which case you might just get the entire kit. More commonly, however, oil gets into the wiring harness through the camshaft position sensors. I would definitely replace those with the latest revision (Mercedes-Benz part#: A 276-905-10-00), if they haven't already been replaced.
For the front cam cover reseal part numbers, please see the attached invoice from the dealership that had performed the service on my car the day before I bought it pre-owned from them in 2021. You can certainly replace the camshaft magnet solenoids with the latest revision (Mercedes-Benz part#: A 276-156-07-90), but, at minimum, I would also install the harness extensions to avoid potential problems with oil getting into the harness from the magnet solenoids, in which case you might just get the entire kit. More commonly, however, oil gets into the wiring harness through the camshaft position sensors. I would definitely replace those with the latest revision (Mercedes-Benz part#: A 276-905-10-00), if they haven't already been replaced.
Thank you so much. I think I will order the sensors, too.
2004 E 500 4MATIC Wagon; 2015 ML 350 4MATIC; †2003 C 240 4MATIC Wagon (2003-2022)
For those following this discussion thread, the reason why I recommend upgrading to the latest revision of the camshaft position sensors "while you're in there" is covered in this discussion (the same issue applies to the older sensors used on the M276 V6 engines). This is important preventative maintenance, and it is something that I had done shortly after purchasing my gasoline 2015 ML 350 in 2021. I have also had the sensors' connectors checked for oil during the car's annual oil change maintenance (and the connectors at the oil level sensor and oil pump control valve solenoid, which is also reported to be a potential source of oil leaks into the electrical harness), and, so far (had them checked earlier this year), no oil is leaking through any of the connectors into the electrical harness...
06-16-2024, 09:41 PM
