Have Mercedes Questions? Ask a Mechanic for Answers ASAP
Hi Patricia, my name is***** will come down to either a faulty key or a faulty ignition switch. Assuming that your car battery is fully charged, the first step in diagnosing this problem is to try another key. If you do not have a spare key you will need to order a key from the Mercedes dealer. If the new key will not turn in the ignition you will need to replace the ignition switch.
Let me know if you have any questions.