My wifes vehicle 2012 c250 she went to your shops and it wouldnt get started. I went down along with the sprint lights came on without any faults but wouldnt crank, plus it had been caught in park. Google said to take the gear trapped insert out and I used https://mercedes-steering-lock-re53972.blogdosaga.com/28063611/mercedes-keys-things-to-know-before-you-buy