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Iv got a 2004 ford I believe immobiliser needs reset .I replaced battery while ignition was on any advice on how to reset

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What model ? explorer , focus etc....

Posted on May 20, 2017

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  • Jeff Armer May 20, 2017

    What country ? PATS -passive anit-theft system . Is the security light on ? does it flash when trying to start the vehicle ? Don't know about where you are , but here in US resetting has to be done with a factory tool or a professional tool that lock smiths use .

  • bobmcqueen26
    bobmcqueen26 May 20, 2017

    I'm in Australia jeff, usually its leave battery disconnected 24 hrs. or key turned on for 10minutes . I was hopeing it would be the same in us yes we have pats

  • bobmcqueen26
    bobmcqueen26 May 20, 2017

    thanks jeff

  • Jeff Armer May 20, 2017

    Your welcome !


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I have a 2004 ford escape it will crank but wont start. i just replaced tje fuel pump, the crank position sensor and fuel pump realy fuse what else could keep it from running

the immobiliser, cam shaft position sensor, wiring incorrect or not together properly for the carnk position sensor
run the fault codes for other possible reasons

Jun 06, 2015 | 2004 Ford Escape

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I had to change my ignition switch on my 2004 ford escape now it wont start the anti theft light is on an won't go off what do I do

you may have to go to a service dealer and have the immobiliser reprogrammed to the new switch and keys.

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My 2004 Ford Ranger will not start. The Anti-theft system light is flashing and the ignition is locked up

Did you try disconnecting the battery for about 10 or 20 seconds? It may only need to be reset. You may also need to replace the batteries in your remote, or possibly try a second remote if you have one. The problem is definitely alarm related.

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I have a fiesta 04 plate and the immobiliser is on how do i turn it off

They are all different but many systems will work if you leave key turned to on for 5 to15 minutes or so (need good battery) and then click right to start. Bigger issue may be chip key or ignition "reader" in vehicle may have lost contact due to age.

Jan 12, 2015 | 2005 Ford Fiesta 1.3

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Reset immobiliser

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My 2004 Toyota Avalon has some kind of security system with a chip in the key that doesn't let me make a spare key at the hardware store. The spare key would crank, but never start the car. Now, my...

Check the battery in the key and replace if flat. There is an engine immobiliser next to the ignition switch that reads the key and allows the engine to fire up. Ordinary keys are only good to unlock the fuel cap. If the key is playing up Toyota have spares that you can purchase and they will need the vehicle so that the new key can be programmed to the immobiliser. In Australia that amounts to around $600.00 so I guess it won't be cheap.

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Fob battery went flat now omega won't start

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Feb 07, 2013 | Cars & Trucks

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How to bypass immobiliser in 94 ford falcon after ignition barrel has been replaced ??

Your ford dealer visit may not be as expensive as you think, you need 2 pats keys and have them perform an ignition key code erase then they should be able to program your 2 new keys, The Ford Dealer I work at only charges 0.5hrs or approx $50.00 dollars Canadian.

Jan 12, 2012 | Cars & Trucks

1 Answer


Have you tried the following:

Ignition Control Module (ICM) REMOVAL & INSTALLATION NOTE: Only the EEC-IV ignition systems use an external ICM. EEC-V systems have incorperated the ICM into the Power Control Module (PCM).
  1. Disconnect the negative battery cable.
  2. Detach the wiring harness connector(s) from the ICM.
  3. Remove the mounting bolts, then remove the ICM. To install:
  4. Position the ICM onto the inner fender apron and install the mounting bolts. Tighten the bolts to 22–31 inch lbs (2.5–3.5 Nm).
  5. Attach the wiring harness connector(s) to the ICM.
  6. Connect the negative battery cable. Fig. 1: Ignition control module and mounting location on the 2.3L, 2.5L engine 89682g32.gif
    Fig. 2: Ignition control module used on all EEC-IV systems except the 2.3L engine 89682g33.gif
    Fig. 3: Ignition control module mounting on all EEC-IV systems except the 2.3L engine 89682g34.gif
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Jul 11, 2010 | 1996 Ford Explorer

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Replaced engine & battery, security system locked us out

sounds like the immobiliser, like you did,nt connect the immobiliser block,a cable with 3 wires,look carefully you may not have noticed & plugged it in. all the leads connected to the battery may not be correct. car thinks it,s being stolen.with fords you need to use the original key(red dot on it)to activate security settings,good luck leave key out of ignition,that may work

Jul 27, 2009 | Ford Escort Cars & Trucks

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