I just replaced the crankshaft position sensor. A pain of a job on the M272. Lots of conflicting information on the Internet on what bolt type it is. Since you can't see it and you need to undo it by feel this is important. For reference on my car it was a TX30 Torx.
At least first test drive check engine light is not on and the car drives well. We'll soon see if it has fixed the issue properly.
I went to replace the wiper blades today.
I had purchased some online from overseas.
Bad idea, they are are 'handed' - i.e. RHD and LHD wiper blade sets are different.
I tried to modify these but couldn't - not the end of the world, only $50 for a set of bosch from a local seller, but a good lesson learned for the modern cars.
Reading this thread, C107, I got to admire your mechanical and fixability know how. Let's see if we can get you a well paying job at a Mercedes dealership. Regards Styria