Hello.
Ive been having strange issue with this car. Its a 2010 model 180c with m271 engine.
It all started with sudden loss of power wich lasted for like three seconds. Got knockinfg sensor code from dtc scan. Then car didnt start but jumpstart helped. Did nothing because car ran smoothly after charging battery. Then car wouldnt start again and I decided to buy new battery. Worked fine until after 15 km yellow engine indicator went on. Without any symptoms or irrelevant sounds.
Again went to do a dtc scan wich gave codes for crankshaft/camshaft sensors plus knocking sensor.
At the same time iv been having problems with right rear led turning signal. Sometimes it stops working and then all of a sudden it works again. Dont know if it has anything to do with this all.

So could these problems all point to a chain problem? The chain has been repaired 1,5 years ago so could it worn down so fast? Or is there problem with sensors, wiring or other electricity related parts.

 

I usually like to see the exact codes to have a better understanding of the issue. But if the codes point to camshaft sensor then id inspect them and the wiring harness for defects, then replace them.

For the turn signal is the led the original bulb, i thought 2010 was regular halogen bulbs. Same thing, inspect the bulb carrier and bulb for any defects. May just be a dirty connection. Inspect the wiring harness going to the carrier, look for anything loose or burned looking wire. if you can catch it while its not working get the multimeter out and check for voltage starting at the harness.

 

The codes were P0017 camshaft/crankshaft stance correlation bank 1 sensor B. And P0326 knocking sensor bank 1 (forgive my bad translation).

 

Just realized something. Have been figuring out when and how all this started and have I done something wrong by myself. When I think back I guess the priblems migth have started after I changed the oil. So could the oil be wrong kind?

 

What oil did you use?

Are the codes Current or Stored?

 

I used local markets own brand 5w30.
Not sure about the codes as the guy who did the test did not mention this. But I would think they are stored.

 

Mercedes is very specific about the oil you MUST use for proper operation. Not sure if using the wrong oil would cause this, but it may since oil is used for the variable valve timing (VVT). Check this link:

https://operatingfluids.mercedes-benz.com/sheet/229.51

https://operatingfluids.mercedes-benz.com/category/engine-oil

 

From either of these pages, Search for 223.2 using the magnifying glass in the upper right corner. Then click on the link that comes up. It will take you to a sheet with the most recent specifications for all engines. Use the oil approved for your engine only. For example, use 229.5 if that is what is says and don't use 229.51. Apparently, 229.51 is not appropriate just because it has a higher number.

 

So i changed oil to mobil 1 esp 5w30. This should be fine. Also replaced the camshaft sensors. Then zeroed the codes. Everything seems to be ok for now nmbut lets see.

 

Mobil 1 ESP 5W30 is approved for 229.51, which is approved for your engine in Western Europe. So, at least you are using the correct oil. Let's hope this fixes the problem.

 

I also recommend you get your own Mercedes-specific scanner, such as iCarsoft MB V3.0, LAUNCH Creader Elite BENZ, or Foxwell NT 510 so that you can scan your car at any time. In the US, they are pretty inexpensive compared to what I've seen them sell for elsewhere. Still, you really need one, especially if you have an older car. They are small enough to store in your car (such as the fuse compartment in the trunk). Sometimes a code may cause the car to run rough and clearing it will restore normal operation until you get a chance to check it out.

(Do not waste your money on the iCarsoft MB II. It is slower and requires you to check each module for codes. MB V3.0 runs an automatic scan and will identify modules with DTCs so you don't need to check 30 or 40 modules individually.)