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Unhook your negative battery cable for about an hour. When you hook it back up, the computer should reset itself. Make sure your key is in the ignition.

If not, there is a resetting sequence in your owner's manual that tells you how to mate the key to the ignition. Follow the instructions PRECISELY! You'll need an analog watch for timing the procedure, as it deals with seconds.

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Q: How do you reset your anti theft system after you replace the ignition switch on my 2003 ford focus?
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Related questions

Change the ignition on a 2002 Ford Focus?

ignition switch


How do you fix a Ford Focus ignition switch?

learn how


The ignition switch will not turn at all What do you do?

Are you using an original key, or a replacement that has the proper security computer chip located in the fat plastic part of the key? If not, the car's security system will keep the ignition locked and will not allow you to turn the ignition switch. ALSO: some earlier models of Focus had ignition switches that were a problem. If you ARE using the correct key and can't turn the switch to start the car anymore, the ignition switch may have to be replaced.


What is the likelihood of the ignition switch failing on a 2000 Ford Focus?

Very good.


How to replace ignition coil in a Ford Focus?

http://www.ehow.com/how_4509339_replace-ignition-coil-pack-ford.html


How do you replace 2000 Ford Focus ignition switch?

Insert key, use a something thin to push on the release pin which is on the bottom of the ignition, while pushing on the pin turn the key until the pin actually pushes all the way in, pull the ignition out using the key.


How do you replace the steering column in a 2000 ford focus?

Program a new key and ignition to a 2000 ford focus


What would cause radio in 2005 ford focus to come on with key out of ignition?

Is it an "after-market" radio? It sounds like it was wired to a "hot" terminal that is not controlled by the ignition switch.


How do you fix dtc code XX302 on 2003 Ford Focus?

Usually, replace the spark plugs and/or the #2 ignition coil.


Where is the distributor for a 2005 Ford Focus?

Actually , there isn't a distributor , it has a Coil On Plug ( C.O.P. ) ignition system


Where is the distributor on a 2000 Ford Focus?

Ford uses a distributorless ignition system or D.I.S. It does not have a distributor. it has a coil pack.


Ford focus 2001 I bang my key in the ignition to turn it Should I replace it If I replace key ignition cylinder it needs to be reconfigure with original auto key Can I do this or the dealership?

I would have the ignition itself replaced. These go out all the time and will leave you stranded. Get a new ignition keyed to your current key and you won't have to do programming. A locksmith can do this for you. Do it soon though before it stops turning.