2003 Ford Thunderbird Logo
A
Anonymous Posted on Jul 17, 2014

What does it mean when my 2003 thunderbird anti-theft light is flashing?

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Bruce Bolinsky

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  • Posted on May 06, 2019
Bruce Bolinsky
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If the car starts and runs fine , and only flashes when the vehicle is off, (key off) , it simply means the system is armed.
My ranger flashes until I start it.

A

Anonymous

Do you have codes you can google
or give me?

That car is the same as my 2004 Lincoln L/S

Is the Battery Dead?

They only last 2 to 4 years & have to get at a dealer
because of the trunk vent hose

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5 Related Answers

Anonymous

  • 783 Answers
  • Posted on Feb 16, 2009

SOURCE: 2000 ford windstar anti theft light flashing vehicle won't start

This means that your key is not being recogonized.Ethier the chip in the key is bad or the patts transciever at the lock cylinder. Do you have a spare key? If not you will have to get 2 new keyss cut and programmed.

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Anonymous

  • 13 Answers
  • Posted on May 11, 2009

SOURCE: 2003 Ford Windstar won't start

does it have an autostart? if you have two keys (this will only work if you have two) turn the key to on in the ignition and wait till the theft light goes out do this for each key this may fix your problem.

Anonymous

  • 4669 Answers
  • Posted on Aug 23, 2009

SOURCE: 98 explorer will turn over but not start

Yes you have a problem with the theft system. Have you tried a different key? It has a transponder system.

Anonymous

  • 94 Answers
  • Posted on Dec 04, 2009

SOURCE: ANTI THEFT LIGHT KEEPS FLASHING ON AND OFF

Did you steal it? I heard about you thieves who steal cars then put new transmissions in!!
Seriously, try this, it may help...
Put the key in the ignition, and turn forward all the way just before cranking. Then within 5 seconds, locate, press and hold in the valet/overide button, found under the dash area, (push button, spring loaded) until the installed LED (the blinking light) in your dash area goes on solid, and the siren chirps once. (Your valet switch might be the toggle (on/off) type. in this case, key on, flip switch in opposite direction, then turn the key off.) This should reset the alarm, and reset the grounded relay on the starter wire, allowing you to start the engine. At this point, the only thing working would be the keyless entry from the alarm, if it came equipped that way. Just Repeat these steps to place it back to usable armed mode. You may get 2 chirps, confirming it, and the lights may flash twice as well. That should do it. Check out www.explorerforum.com

Jonah Oneal

  • 14092 Answers
  • Posted on Oct 08, 2010

SOURCE: The car wont start, the

TRY REPROGRAM KEY .PUT KEY IN IGNITION SWITCH TURN IGNITION SWITCH ON POSITION 20 SECONDS DONT START ENGINE WAIT 20 SECONDS TURN OFF SWITCH THEN TURN SWITCH BACK ON 20 SECONDS WATCH THE THEFT SECURITY LIGHT BLINKING.WHEN THEFT STOP BLINKING VECHICLE WILL CRANK.IF LIGHT STILL BLINKING.TRY FEW MORE TIMES KEY IN SWITCH ON POSITION FOR 20 SECONDS.MAKE SURE YOU HAVE THE CORRECT CAR KEYS IN SWITCH IF NOT WRONG SET OF CAR KEYS WILL SET OFF THEFT SECURITY SYSTEM.IF KEY RESETTING TRICK DONT WORK.CHECK BATTERY POWER MAKE SURE YOUR BATTERY HAS 12.5 VOLTS AND CHECK SECURITY THEFT FUSE.IF ALL LOOKS GOOD YOUR SECURITY HAS TO BE CHECKED OUT AT THE DEALERSHIP.

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I am having the same issue with my anti-theft device in my 2003 Alero. Last year it stopped running and would not turn-over. $400 later, Brakemax said they just had to reset the anti-theft device. oK,...

the shop that told you they ripped it out only ripped you off unless they removed some aftermarket alarm system i,m a gm mechanic and if you remove the factory anti-theft on a 2003 olds alero it will not run ever again until re-installed make sure your battery is charged good turn igntion switch to run position but do not try to start security light should be flashing let car sit with switch on and light flashing for ten minutes light should stop flashing now start your car this is how to reset anti-theft was that worth $400.00 and again why let a bussiness named brakemax look at a no start condition keep on and you will be BROKE to the max HOPE THIS HELPS AND STAY AWAY FROM THEM YOUR FRIEND @ HELPMAX
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I would have to say it is the anti-theft light since it only flashes after you lock the doors which if this is that is normal,shows system is armed. However when looking through the owners manual on a 2003 model it shows it as THEFT and not a key,2002 shows the same,however 2004 shows a lock. The only thing I see that even closely resembles a key is the temp warning indicator.

You can go to this website and pick owner guides on the left task bar,then input your vehicle info,then pick get owner guides,then pick the owner manual and it will show you a picture of the instrument cluster and what everything means.
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theft is flashing leave keyon untill the light stop flashing take about 20 minute after tur key of and try to start if flash again repeat hope it help fixya our post thanks pierre
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