'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


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.


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.

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.

Your Answer:


Looking for a Used Focus in your area?

CarGurus has 2,047 nationwide Focus listings starting at $2,900.

Postal Code:

Ford Focus Experts

  • #1
  • #2
    Su'ad Barakat
  • #3
View All

Related Models For Sale

Used Ford Fusion
41 Great Deals out of 1,862 listings starting at $3,995
Used Honda Civic
90 Great Deals out of 5,948 listings starting at $3,501
Used Ford Fiesta
15 Great Deals out of 623 listings starting at $1,999
Used Chevrolet Cruze
79 Great Deals out of 8,612 listings starting at $1,700
Used Ford Mustang
31 Great Deals out of 1,796 listings starting at $4,800
Used Toyota Corolla
72 Great Deals out of 4,171 listings starting at $1,715
Used Ford Escape
113 Great Deals out of 5,947 listings starting at $2,999
Used Honda Accord
27 Great Deals out of 1,742 listings starting at $1,995
Used Toyota Camry
40 Great Deals out of 1,658 listings starting at $1,995
Used Hyundai Elantra
51 Great Deals out of 3,983 listings starting at $2,449
Used Mazda MAZDA3
51 Great Deals out of 3,160 listings starting at $2,795
Used Nissan Altima
52 Great Deals out of 1,685 listings starting at $2,500
Used Volkswagen GTI
16 Great Deals out of 426 listings starting at $5,999
Used Chevrolet Malibu
39 Great Deals out of 2,162 listings starting at $2,688

Used Cars for Sale

2018 Ford Focus For Sale
11 Great Deals out of 282 listings starting at $15,809
2017 Ford Focus For Sale
8 Great Deals out of 186 listings starting at $11,849
2016 Ford Focus For Sale
10 Great Deals out of 270 listings starting at $8,295
2015 Ford Focus For Sale
326 listings starting at $5,995
2014 Ford Focus For Sale
12 Great Deals out of 342 listings starting at $4,000

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.