Have Mercedes Questions? Ask a Mechanic for Answers ASAP
Hi, my name is*****'m not sure what your question is. Do you want some ideas as to the cause of the problem?
The problem is going to be a bad steering lock or a bad ignition switch. You need to get the car connected to the Mercedes Star Diagnosis tester to determine which one has failed. Since you can still unlock the car the problem is most likely going to be the steering lock.