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Marty, Mercedes Technician
Category: Mercedes
Satisfied Customers: 53016
Experience:  Bosch Certified Master Tech. Over 35 years experience.
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Lights come on, the windows 't work, key won't turn -

Customer Question

Lights come on, the windows don't work, key won't turn - nothing. Tried to jump it - nothing.
JA: Can you turn the steering wheel at all? And what about the key? Is it worn or damaged?
Customer: Acts as if it's locked out
JA: What is the model/year of your Mercedes?
Customer: can turn key but locked in park
JA: What year is your Mercedes?
Customer: C300 2008
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: yes. jumping it
JA: Anything else you think the mechanic should know?
Customer: thought it was dead battery
Submitted: 3 months ago.
Category: Mercedes
Expert:  Marty replied 3 months ago.

Hi, my name is***** sounds like either a fault with the key itself or a fault with the electronic ignition switch or the electronic steering lock. If the accessory items do not work with the key on the problem is usually a faulty electronic steering lock. You can try using your spare key if you have one but aside from that the car will need to go to a Mercedes specialist for a diagnosis with the Mercedes tester.

Let me know if you have any questions.