Question about 2005 Ford F-150

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My 2005 f150 wont star my anti theft system is

My 2005 f150 wont star my anti theft system is arm can u help me my engine stars but wont fire i have a manual windows and locks my vin # is 1ftrf12235kb97994

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  • Ford Master
  • 4,369 Answers

Alarm rearms itself.

this is for 2001 and is similar.

Anti-Theft —PATS The passive anti-theft system (PATS) contains the following components:

  • theft indicator
  • encoded ignition key
  • transceiver module
  • instrument cluster
  • powertrain control module (PCM)
  • standard corporate protocol (SCP) communication network
The PATS uses radio frequency identification technology to deter a driveaway theft. Passive means that it does not require any activity from the user. This system is known as SecuriLock® in North America, Safeguard® in the U.K. and PATS in continental Europe. This information can be found in owners literature.
The PATS uses a specially encoded ignition key. Each encoded ignition key contains a permanently installed electronic device called a transponder. Each transponder contains a unique electronic identification code, with over 72 million billion combinations.
Each encoded ignition key must be programmed into the vehicle's instrument cluster (the instrument cluster is also known as a hybrid electronic cluster [HEC]), before it can be used to start the engine. There are special diagnostic procedures outlined in the workshop manual that must be carried out if new encoded ignition keys are to be installed.
The encoded key is larger than a traditional ignition key. The key does not require batteries and should last the life of the vehicle.
The transceiver module communicates with the encoded ignition key. This module is located behind the steering column shroud and contains an antenna connected to a small electronics module. During each vehicle start sequence, the transceiver module reads the encoded ignition key identification code and sends the data to the instrument cluster.
The control functions are contained in the instrument cluster. This module carries out all of the PATS functions such as receiving the identification code from the encoded ignition key and controlling engine enable. The instrument cluster initiates the key interrogation sequence when the vehicle ignition switch is turned to RUN or START.
The PATS uses the PCM to enable or disable the engine. The instrument cluster communicates with the PCM over the SCP network in order to enable engine operation. The instrument cluster and the PCM use sophisticated messages in order to prevent a theft. The instrument cluster and the PCM share security data (when first installed together) that makes them a matched pair. After this security data sharing, these modules will not function in other vehicles. The shared PCM ID is remembered even if the battery is disconnected. The instrument cluster also stores the vehicle's key identification code even if the battery is disconnected. There are special diagnostic procedures outlined in this workshop manual that may be carried out if either a new instrument cluster or PCM needs to be installed.
All elements of PATS must be functional before the engine is allowed to start. If any of the components are not working correctly, the vehicle will not start.
PATS uses a visual theft indicator. This indicator will prove out for three seconds when the ignition switch is turned to RUN or START under normal operation. If there is a PATS problem, this indicator will either flash rapidly or glow steadily (for more than three seconds) when the ignition switch is turned to RUN or START. PATS also "blips" the theft indicator every two seconds at ignition OFF to act as a visual theft deterrent.
The PATS is not compatible with aftermarket remote start systems, which allow the vehicle to be started from outside the vehicle. These systems may reduce the vehicle security level, and also may cause no-start issues. Remote start systems must be removed before investigation of PATS-related no-start issues.

------------------------------------
Visual Inspection Chart Mechanical Electrical
  • Ignition lock cylinder
  • Encoded ignition key (PATS key)
  • Use of non-encoded ignition key (key without the molded plastic head, non-PAT key)
  • Use of a non-programmed encoded ignition key
  • Central junction box:
    • Fuse 2 (5A)
    • Fuse 6 (5A)
    • Fuse 30 (30A)
  • PATS transceiver
  • Connectors
  • Ignition switch

Posted on May 11, 2009

6 Suggested Answers

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Posted on Jan 02, 2017

SOURCE: How do i eliminate the

You can not eliminate vehicle systems very well
You would end up with a check light on,and not be able to pass inspection

The ABS light, is a separate issue. Get the code,then proceed to diagnose. Could be a Wheel Speed Sensor.

Posted on Oct 07, 2010

  • 36 Answers

SOURCE: anti-theft/security light on dash doesn't flash on 2005 avalanche

Several GM products, including the Chevrolet Impala and Malibu, the Oldsmobile Alero, the Pontiac Grand Prix, and Saturn Ion, have issues with the Security light coming on. This is many times an indication of a failing Body Control Module (BCM). Initially, the Security light will come on then go off, progressing to a constant on light, before the car will refuse to start. Other symptoms may include erratic action of electronics, a clicking sound coming from the glove box, and the air conditioning failing to blow cold air. I recommend a shop that specializes in the electronic systems of vehicles to diagnosis and make the necessary repairs. They should keep the car until they replicate the symptoms described. A new BCM from GM should cost about $230; plan on another $200 for them to diagnose the problem, replace the unit, and program the new unit. The dealers quote between $700 and $1,100 for the same repair. My experience and the experiences I have read on the internet, indicate the new BCM should last only about a year.

Posted on Aug 14, 2009

  • 1 Answer

SOURCE: car wont star anti-theft light keep commin on

2000 FORD TAURUS. JUST BOUGHT WAS RUNNING GREAT. IT HAS BEEN SITTING FOR ABOUT 4 YEARS STRAIGT. HOW DO I GET KEY RE-CODED? JUST REPLACED CATAY.CONV. NOW THIS PROBLEM

Posted on Sep 05, 2009

  • 98 Answers

SOURCE: how do you star a 98 chavy malibu with tha anti

Here is what you do. make sure the battery is fully charged cause you dont want it to go dead during this process or it wont work. step down on your parking brake pedal and leave it down. this will keep the headlights off during the process so the battery wont go dead. turn the ignition key like you were going to start the car then leave the key in the on position. you have to leave the key in the on position for ten minutes. during the ten minutes you will see the anti theft or security light flashing or the display in the instrument cluster. when the ten minutes are up the security light will go out. once the light goes out attempt to start the car. if it doesnt start turn the key all the way back to the off position count to three then attempt to start the car then leave the key in the on position another ten minutes till the light stops flashing again. sometimes it takes up to three ten minute cycles to reset the antitheft system. so basically you do the same thing three times leaving the key in the on position for ten minutes each time so it will take approximately thirty minutes. sometimes it will work on the first try though.

Posted on Oct 31, 2009

sscullys
  • 984 Answers

SOURCE: Ford F150 remote key does not work after car battery

Should not have happened,
For the Factory RKE ( Remote Keyless Entry ) have you tried reprogramming the key fobs to your truck. The procedure is in the owners manual ( need all of them at programming time ).
This is stored in NVR, and should not need to be done, but worth a try.

If this is an aftermarket Remote start / alarm, check the owners manual for t on battery replacement. Have seen some off brand with strange battery ( truck's battery that is ) replacement steps.

Posted on Nov 04, 2009

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Wont star my car cause the anti theft system


disconnect the battery and join the leads together then leave for half hour ,reconnect the battery and see what happens if it still will not start then call the dealer as the security system is all encrypted software or it wouldnt be secure if anyone can by pass it

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My friend replaced the positive terminal cable on her 2005 nissan altima with a positive terminal cable from the factory and now the car won't start at all. There is power to all the fuses and the battery...


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It is very likely that the terminal is fine. Many vehicle owners are not aware that the newer factory installed anti-theft systems will lock down the car, ( prevent it from starting ), if the battery is disconnected for more than just a couple of minutes. In the future if you need to disconnect the battery, make sure that you dis-arm the anti-theft system first

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My anti thief ligth is on I can star my engine. Please advice.


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Feb 27, 2011 | 2005 Chevrolet Malibu

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I have a 1999 f150 5.4 4x4 that it crank over but wont start


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Feb 14, 2010 | 1999 Ford F150 Regular Cab

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Turn ignition key and motor starts up, next day turn ignition key and motor just turns over and wont start. could it be anti theft problem its a 2002 f150 4 wheel drive with 4.6 liter


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Jan 13, 2010 | 2002 Ford F150 Regular Cab

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pull the anti theft fuse and or your on star fuse to

Jan 10, 2010 | 2003 Chevrolet Avalanche

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Car wont star anti-theft light keep commin on


2000 FORD TAURUS. JUST BOUGHT WAS RUNNING GREAT. IT HAS BEEN SITTING FOR ABOUT 4 YEARS STRAIGT. HOW DO I GET KEY RE-CODED? JUST REPLACED CATAY.CONV. NOW THIS PROBLEM

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