Car wont start light blinking - 2003 Ford Focus

If the anti theft light is blinking and you say that everything else fine.. My first thought is that the key is not programmed to the vehicle. The key has a internal chip that must be programmed to vehicle in order to start. Now my other question is, Is the key your using for the vehicle the original key or have you just recently had a key made? Regardless, in order for the yur Tribute to start, the key. Or keys have to be program to vehicle by your neighbor dealership. Thats the reason for your anti theft light is blinking

What have you checked so far ?

This link should help you with this.

http://vatspasslockpasskeysecurityhelp.yolasite.com/

The alarm is armed.Try unlocking the doors with your key

Turn the key on but don't start the car, let it sit until the light stops blinking and start the car....should be 10-15 minutes.

try locking and unlocking the drivers door with the key. hope this helps. mike

With the new lock cylinder in it, turn the key on. The security light should blink. Leave the key on for 10 minutes, the security light will quit blinking and go out after 10 min. This will reprogram your security system and the car should start. Also leave a battery charger on it while the key is on, If the battery goes dead during the 10 minute reprogram sequence, you will have to start over again.

when u see the security light blinking and it wont start u simply turn the switch on and leave it on till the security light stops blinking then turn the switch off and start the car up

take it to a shop and have them diable the security system