MERCEDES STEERING LOCK NO FURTHER A MYSTERY

My wifes car or truck 2012 c250 she went into the shops and it wouldnt start off. I went down as well as dash lights came on without any errors but wouldnt crank, furthermore it absolutely was stuck in park. Google mentioned to take the gear stuck insert out and I used to be ready to press the yellow button and go the gear stick out and in of park.