Question about 1998 Ford Mustang

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Theft light blinks rapidly and car wont start

I have 3 keys none work last time it took 2 hours of trying them for it to start ran good for 2 weeks now has same problem

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  • nick420 Apr 13, 2009

    98 mustang ..theft light blinks same with check engine.. car will crank but not start

  • Anonymous Apr 16, 2009

    wont start and keeps blinming theft

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You may have a problem with the key sensor in the ignition lock cylinder, if it goes bad the system can't id your key code and it locks you out.

Posted on Dec 04, 2008

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Posted on Jan 02, 2017

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1 Answer

After using quick my Ford Exploere 2004 car wont start anti thft light blinking


The battery reset protocol usually means the 8 turns routine using the original keys with key fob transponders
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More information here

https://www.cargurus.com/Cars/Discussion-c112_ds558688

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Your vehicle is equipped with a passive theft deterrent system that utilizes a "pill" embedded in your key along with a receiver contained in the steering column. If the system doesn't recognize your key, the vehicle will crank but not start and the theft light will flash rapidly. If you have another key, try it. Otherwise, you're in for a trip to the dealer where they can either reset the system or troubleshoot it further.

Good luck.

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Starter ok no blown fuse. all lights working but it wont start. anti theft light blinking fast os soon as you turn it to on. what is the problem.


it is the microchip on your key.. you have to reset the key by sticking it into your ignition and turn it to the run position for 5 mins. at this time the light should stop blinking then turn your key to the off position for 1 sec. repeat six times then your last attempt the car would start guarantee.... notice: as you turn the key to run position the light would blink rapidly for 5mins.. right when it stops turn to the off position for 1 sec.. remember six times..

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this is one way to reset it :
first make sure the battery is fully charged , then do the following:
key in the ignition but do not crank the motor, just leave it at the
ignition mode for ten minutes ,then turn it off POSITION for 5 seconds then REPEAT again 2 more times. at the 3 rd time youre gonna notice the ANTI THEFT light on dash to blink. when doing the last step , remove key , inserted again and turn on motor , good luck , AJ

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Lost my instrutions and alarm speaker not installed. can,t start


put key in driver side door lock and unlock it should turn off the alarm and you should be able to start it, it will do this anytime the power is distrupted or if you unlock the jeep from any door other than the driver real pain....

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the alarm is activating when he locks it and for some reason the key or fob isnt deactivating it..check the disarm switches in the door

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MAY BE YOU HAVE A DEFECTIVE KEY, CHECK IF THE KEY HAS A PELLET IN IT, IF SO THE KEY IS BAD AND YOUR DEALER CAN REPLACE IT.
THE PELLET IS A RESISTOR FOR THE ANTITHEFT.

May 28, 2008 | 2003 Chevrolet Malibu

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