Question about Ford Taurus

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The anti theft is preventing me from starting my 2003 ford taurus. The "theft" light flashes on the dashboard. Lots of electricals are out, including headlights, horn, etc. Turn the ignition key and nothing happens. Battery has juice.

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  • eklam001 Oct 07, 2009

    There are two thick wires from the battery positive terminal. Both wires look good and no sign of bad corrosion at the connection. One wire goes to the fusebox and the other goes down to the engine and beyond. Can you please tell me which one has the fusible link and what's the good way to check it? Or if there are other things I should check as well? Thank you.

  • eklam001 Oct 07, 2009

    Hi, I've found the problem came from a bad battery! (Your suggestion of checking the fuselink from the battery positive helps to steer me into this checking and thank you.)



    Okay, now when I hook it up to a new battery the "scenery" changed completely. The horn blares continuously when I connect it up and the lights all come on. And I still cannot start the engine when turning the key (these I assume are alll symtoms of the anti-theft system working). Can you please tell me how to disarm the anti-theft system of this 2003 Ford Taurus and consider the problem solved.

  • eklam001 Oct 08, 2009

    Thank you for the suggestions that have taught me a lot about the anti-theft system on this car. By following the suggestions I was able to disarm the system in order to stop the horn blaring. My problem was traced to a bad battery that started a chain of unexpected events.

    Thank you for the very clear instructions on dealing with the anti-theft system that I never knew before.

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  • Master
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Hi,

If it is flashing fast when you are trying to start the car that is the PATS system (Passive AntiTheft) that is the system that uses the chip in the key to allow the car to start. And that is what is causing your problem. However, it cannot be over ridden as it is built into the engine control computer. There is not a wire that you can cut or jump to get the system to not work.
But, there is a common problem with that system. Try tiling the wheel into different positions and then try to start the car. The PATS sensor ring is mounted right at the ignition lock cylinder (where the key goes) the the wires from the sensor ring to the bottom of the steering column break. Sometimes you can get it to work by tilting the steering wheel into different positions.

Unless you need to send the car for repair.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Posted on Oct 07, 2009

  • taran_2005
    taran_2005 Oct 07, 2009

    Thanks for your response!!

    If you want to know, how to disalarm :-

    There is no override button under the dash unfortunately. Here is a
    section from the Ford Service Manual on how to disarm the system.:

    Disarming A Triggered System
    NOTE: A perimeter alarm will "shut off" after 165 seconds, but the system is still armed and is not disarmed.

    An armed or untriggered perimeter anti-theft system can be disarmed by one of the following events:


    • Unlock the doors by pressing the keyless entry remote transmitter UNLOCK button once.

    • Unlock the doors by entering the unlock code on the keyless entry keypad (14A626).

    • Unlock any door with a key.

    • Turn ignition switch to RUN or ACC.

    • The remote entry PANIC button will disarm the anti-theft system only when the perimeter alarm is triggered and sounding.
    Hope this answers your question,let me know if there is anything else you need.

    Thanks for using ' Fixya ' and have a nice day!!

    Do accept the solution, if 100% satisfied from my service!!



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  • Ford Master
  • 4,369 Answers

Check the small wires on the positive battery post for corrosion and if the fusible links are bad.
The theft light is supposed to flash, and it rearms itself, if tripped. So it is not the problem.

Posted on Oct 07, 2009

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