skidamo

Hey guys, got a 2012 C63 and wife told me about 3 weeks ago the car sounded like it was struggling to start so we got the battery tested and guy said was about 75% charged still, went on driving car fine with no noticeable issues or even starting. Drove car perfectly fine this morning, got in the car to leave work and car doesnt start. Radio is on, key clearly unlocks car, fuel pump sounds like its priming so I just thought ah maybe the battery has finally given out and changed it without retesting it. Popped new battery in, hopped in driver seat, still nothing.

The car doesn't crank, doesn't do anything so I assume it isn't a bad starter or alternator. Can anyone point me in the right direction of what I might want to check?

DT at China

Check the starter,what is more,fuse for it
Please perform a quick test ,check any fault code,
give me feedback
Good luck