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I have a 2010 Mercedes GLK 350, and my key fob has stopped working. I cannot lock or unlock doors nor start car. Today at several different stops the car would not lock right away after stopping -- this happened several times today and then finally stopped working completely. I had the same problem a few months ago and I simply retrieved my second key and it worked fine with that key. Now that key failed today. What can it be?

  • Welcome to Motor Vehicle Maintenance and Repair! – Cullub Nov 29 '18 at 4:13
  • did you check the battery of the fob? you have not described if its a push start or a standard key – precise Nov 29 '18 at 20:04

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