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Marty, Mercedes Technician
Category: Mercedes
Satisfied Customers: 53590
Experience:  Bosch Certified Master Tech. Over 35 years experience.
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S500: my 2001 s500 key fob will not turn in the ignition, batteries

Customer Question

my 2001 s500 key fob will not turn in the ignition, batteries are good, will not remote lock or unlock doors all of a sudden
Submitted: 1 year ago.
Category: Mercedes
Expert:  Marty replied 1 year ago.
Hi, welcome to Just Answer. My name is***** the key won't turn in the ignition either the key has gone bad or the electronic ignition switch has failed or your battery is to weak for the switch to accept the key. First make sure that the battery is good by connecting a jumper battery to your battery. I assume that you only have one key. If that is the case you will need to order a new key from the Mercedes dealer and give it a try. If you have no success you will need to replace the electronic ignition switch.
Let me know if you have any questions.