teaching in transmission. Wont go into gear
External damage is minor, but it has a gearbox fault. I've done some google research, but cant really find much info on this. There are a couple of posts about following the on screen prompts, pressing the SOS button and clearing other faults.
I usually work on BMW, so have little knowledge on Mercs.
So my question is..
1. How bad 'could' this be. Is it very likely a software/calibration issue. Or could it be a serious mechanical fault the needs a new gearbox.




