I lost the security chip out of the key.
Ford f150 theft light flashing.
Once programmed only one of these smart keys or chip keys can be used to start your engine.
Ford vehicles such as the ford f 150 are equipped with transponder key capabilities that allow you to program them electronically to your engine.
On my 2003 ford f 150 the theft light blinks.
Insert the key into the ignition and turn it on to the position where the accessories are activated but not the engine.
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2004 ford truck f 150 motor 4 2 how find problem on theft system posted by enrique colmenares on sep 30 2014.
The display of the car behind the steering will light up and will show the anti theft light blinking or constantly lit.
Leave the key in this position for at least 10 minutes.
And i had two other transponder keys made and took it to the ford place and they wiped the computer system playing i guess but they said these keys are programmed to the truck but the anti theft light is still blinking and will not start.
2004 ford truck f 150 4 2 theft light flashing wont start how to fix.
You can reset these anti theft keys in just seconds from your driver s seat.