'No key detected' But they key is in the ignition

Asked by May 30, 2018 at 08:12 AM about the 2012 Ford Focus

Question type: Maintenance & Repair

2012 Ford Focus. Key is in the ignition and they car will tell me no key
detected. It will also trigger my anti theft system when I unlock the door with the
key. And my alarm will go off when I go to start the car if it doesn't read my key
right away. I don't have a FOB. Just a manual key. I did just buy it used.

3 Answers

152,245

That sounds like the transponder in the key went bad, a dealer can cut a new and reprogram the security system to recognize the new key or if you have a very good locksmith, they can do the same thing only cheaper. This is going to be expensive either way but cheaper with the locksmiths.

60

We found it was our cell phone - The phone was in a holder at the heater vent next to the steering wheel and it happened to us all the time - 'Key not Detected' - As soon as we moved the cell phone away it worked just fine Ü

6 people found this helpful.
152,245

WOW that's not suppose to happen. I would have the phone tested for excessive RF radiation, too much can be a health hazard. Not too mention interfering with electronics.

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