Question about 2005 Ford Focus

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2005 Focus PATS issues

Security light comes on randomly. tries to shut car off while driving. Had keys reprogrammed, chip reader replced..still does it

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  • Barry Cusano
    Barry Cusano Dec 27, 2013

    "codes we get..B1601, P1711 with an aftermarket scanner"

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  • Ford Master
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Run fault codes to find the sensor that is shutting the CPU down

Posted on Dec 27, 2013

Testimonial: "codes we get..B1601, P1711 with an aftermarket scanner"

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6ya6ya
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Posted on Jan 02, 2017

  • 142 Answers

SOURCE: Ford Focus Engine Light

Start by getting either a mechanic or someone with an OBDII scanner to read the code so you know where to start. Lots of time a loose gas cap will cause a "Evap system small leak" code which illuminates the check engine light for a while. Other than that I can't help you much without knowing what code comes up.

Posted on Aug 28, 2008

  • 20 Answers

SOURCE: 2005 Ford Focus - Emmission light on steady

I may want to get an OBD-2 code reader it does run scans on the emission sensors( fumes capture, evap, ehxaust recirculation....). there are too many things going on at once to really pinpoint the exact problem. I tried.

Posted on Mar 30, 2009

  • 43 Answers

SOURCE: 2000 ford windstar won't crank over,but pats keys good, and batt.

First thing I would check is to see if you have power at the trigger wire of the starter motor while someone is trying to start the vehicle for you. It will be a Yellow with a light blue trace. If you do then I would check to see if the main battery cable has power to it all the time when someone is trying to crank it. If it does then I would hold a test light on the case of the starter motor and have someone try to crank it. Make sure that the ground you use for this test is on the negative battery terminal not just anywhere on the car. If the test light lights while you are cranking it then you have a bad ground. Hook up a set of jumper cables from the battery negative terminal and clamp it directly on to your starter motor and see if it starts. If you check it and the test light doesn't light up and all the other checks are good then your starter motor has failed. If one of the other tests has failed then you have a starter relay problem or something else. let me know what you find out.

Posted on Apr 13, 2009

  • 1 Answer

SOURCE: 1997 ford expedition wont stay running?

sounds like its the IDEL AIR CONTROL motor is stuck tap {pretty hard} on side of it with hammer if it starts and runs replace control motor.

Posted on Jun 15, 2009

  • 58 Answers

SOURCE: while driving , head light goes off, I stop my

100% you have bad LCM. I rebuilt them with lifetime warranty. Email to ginolena@sbcglobal.net.

Posted on Jul 25, 2009

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How to reset anti theft on a 2005 ford five hundred


[PDF]Ford Passive Anti-Theft System Relearn ... - Cardone

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My corvette won't turn over got new battery.security light is on .run fine before than it shut off .


Make sure your pats key is clean. Sometimes the chip gets dirty. Also try disconnecting the battery for a couple of minutes. This will reset the system...

Jun 09, 2015 | 1990 Chevrolet Corvette

1 Answer

2003 Ford Focus PATS light not blinking and car won't start


I don't believe there is a problem either.
Under normal conditions the security light should come on then go off if the correct key is being used.
The problem could be the key switch or the neutral safety switch if it is an automatic trans. There are other possible causes.

Apr 03, 2013 | 2003 Ford Focus

2 Answers

The theft light on my ford taurus is on and stays on but the car runs fine there is just an issue: my turn lights randomly light up (both) and wont turn off , When this happens the dashboard does not...


Problem sounds like key or P.A.T.S. anti-theft module. Go to dealer who can plug car
into computer or a reputable shop that knows ford p.a.t.s system for
estimate. You can try to check fuses, but they are really hard to
get at under the dash.

Mar 05, 2013 | 2001 Ford Taurus

1 Answer

I lost my keys to my 96' ford taurus if any body could help me with a low price in finding one


If you go to any Ford dealer with a picture ID, and ownership proof (Title), they can cut a duplicate key for your car. A simple one, without a chip on it, will cost you as low as $10. With this key you can unlock the door and get in your car. But there is a small problem. Your car key might have a chip on it.
For the 1999 model year, all Ford Motor Company vehicles equipped with the passive anti theft system will be using the PATS II system. The PATS II system was introduced on roughly half of the PATS equipped vehicles for the 1998 model year. The other half of the PATS equipped vehicles for the 1998 model year were equipped with the PATS I system. Many 2000 and later Ford Vehicles Use the E-PATS system, which uses an encrypted transponder in the key.
The Ford dealer will explain you if you need a simple $10 key, or a chipped one $50 key. If your key has a chip, then you have to reprogram it. Normally the dealer will provide you a written instruction how to do it.

Oct 21, 2010 | 1996 Ford Taurus

1 Answer

Just replaced lock cylinder in my 2002 ford focus and now it wont start what do i do?


You changed the cylinder, did it come with new keys or did you have the new cylinder rekeyed to fit you old keys? It has a PATS antitheft system. You need to use your old keys or have the security system reprogrammed.

Oct 12, 2010 | 2001 Ford Focus

1 Answer

Theft system light on and car wont start


you may have to tow your car to your gm dealer to get your pats keys reprogrammed. your key has a computer chip in it ,if your using a different key without that chip ,your car wont start

May 14, 2010 | 2002 Pontiac Sunfire

1 Answer

2003 ford winstar only key broke in the ignition so i replace the the ignition and reprogramed brainbox however vehicle anti theft light keeps blinking when vehicle is on and off


the anti-theft light is supposed to blink when the car is locked to show the system is armed.

Does it flash while driving?

Principles of Operation
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 out of over 18 billion, billion combinations.
The passive anti-theft system (PATS), also known as SecuriLock ®, uses radio frequency identification technology to deter a driveaway theft. This system is known as Securilock® in North America, Safeguard® in the U.K., and PATS in Continental Europe. Passive means that it does not require any activity from the user.
The SecuriLock® System (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. If equipped the remote start system must be removed before investigation of PATS-related, no-start issues.
Each encoded ignition key must be programmed into the vehicle's powertrain electronic control (PCM) before it can be used to start the engine. There are special diagnostic repair procedures described in this section that must be carried out if a new encoded ignition key is necessary.
This system contains a new feature named Unlimited Key Mode. This feature allows a customer to program more than eight keys to the vehicle if they request it. Each vehicle in Unlimited Key Mode is set up with a special Unlimited Transponder Security Key. This allows all the customer vehicles to share the same keys, but no other keys from outside can be used to operate the vehicles. For an individual customer, any randomly selected Security Key is acceptable. Refer to Unlimited Key Mode Programming in Key Programming Switch State Control in this section.
The PATS transceiver module communicates with the encoded ignition key. The 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 data to the PCM.
The control functions are contained in the PCM. This module carries out all of the PATS functions, such as receiving the identification code from the encoded ignition key and controlling the engine enable. The PCM initiates the key interrogation sequence when the vehicle ignition switch is turned to RUN or START.
All elements of the 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.
The PATS uses a visual theft indicator. The 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 concern, this indicator will either flash rapidly or glow steadily when the ignition switch is turned to RUN or START. The PATS system also flashes the theft indicator every two seconds at ignition OFF to act as a visual deterrent.
The following will activate the PATS and will disable the vehicle from starting:
  • incorrectly encoded ignition key
  • damaged encoded ignition key
  • unprogrammed key
  • non-encoded key (key has no electronics)
  • damaged wiring
  • damaged transceiver
  • damaged PCM

May 26, 2009 | 2003 Ford Windstar

1 Answer

Non start,turns over ,pats light out,no fault codes evident


check fuse for immobiliser.or replace the reader coil around the ignition.if it cannot read the code off the key it wont start.if the key was not coded the pats light would flash continously.replace reader coil.best of luck.

Oct 30, 2008 | 2001 Ford Focus

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