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Bypass mustang theft system?

1997 mustang gt security light does not come on and will not start

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A bit more info required , does the security system lock the doors as well ? is it operated by a fob that you press a button on ?if the doors uasually lock/unlock and this isn't happening as well as the non starting i would first change the battery in the operating fob as this is a common cause and easily overlooked, keep me posted if you wish

Posted on May 11, 2014


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Posted on Jan 02, 2017

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SOURCE: 1994 cadillace anti theft system

I just had this same problem with a '96 . do you have a vats key in your '94? you need to bypass the VATS system. read some of the blogs on this site and it will tell you how to do it. I fixed mine with a $2 resistor from radio shack.

Posted on Oct 12, 2008

  • 958 Answers

SOURCE: car wont start

as long as security theft system is on, car wont start.

don't you have the remote key to disable the theft system?

you can bypass security but you have to have wiring experience and splicing before you can proceed.

tnx 4 using fixya,


Posted on Oct 14, 2008

  • 3 Answers

SOURCE: 99 Ford Ranger won't start because of theft system?

try turning the key to the acc position and leave it in that position till the light goes off. if it goes off then turn key off and then try starting if that dont work call a ford dealership and ask a mechanic

Posted on Mar 08, 2009

  • 31 Answers

SOURCE: 97 Chevy Monte Carlo won't start, security light is on

disconnect battery for 24 hrs so the computer will reset and if that dont work take it to chevy dealer and have them reset it manually

Posted on Mar 27, 2009

  • 975 Answers

SOURCE: dont know how to reset or bypass gm theft system car is not starting .It tries and quits.

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

Posted on May 28, 2009

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1 Answer

2003 ford mustang gt anti theft light flashing engine will turn over but will not start

From my experience...
A non PATS coded key SHOULD not turn the STARTER...!

If ANTI-THEFT were invoked... you can attain a not start condition which the Owners Manual says must be cleared by the dealer.

A working PATS key should disable the anti theft... by turning the ignition on... ELSE try your other key.

The SecuriLock [PATS]
passive anti-theft system is not compatible with
non-Ford aftermarket remote start systems. Use of these systems may
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How to reset the anti theft on a 03 mach 1 mustang gt

your anti theft device is activated,you need to lock and unlock your doors a couple times with the key fob,not the key,and then you need to put the key in the ignition and start it,if you dont have your key fob,call your car dealer to get a new one,they are programmed for each car only,you cannot bypass it.

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How do I bypass the theft system on 98 mustang GT conv.

You have the original key? If you don't, then save up to get t to a dealer and have the lock put in and have it reprogrammed. there is no bypassing a security system. Even places that claim this, all they do is bypass part of it. Like the key. Fords are different. They car has to be programmed to the key. Instead of the key programmed to the car.

Jan 31, 2015 | Cars & Trucks

1 Answer

Problem is in the {PAPS) anti-theft wont start

I had the same problem - My car would not start. There is a bypass button in your car that when you press and start the car at the same time the car will start. To find this button look just above the hood release lever or in that area there is the bypass button. I finally had to remove the anti-theft system and now my car starts fine. The dealer would not replace the anti-theft, but could remove it but the cost was way to high, so I went to place were they replace car radio and other similiar services and payed around $30.00 to have it remove. They also told me that I really did not need this system on my car, because you can't start the car without the key.

Hope this help.

Apr 16, 2013 | 1998 Ford Mustang

1 Answer

I have a 1996 Ford Mustang GT 4.6. My car would start then turn off as soon as the theft light starting flashing, I tried disconnecting the battery, turning the key in both the passenger and driver doors,...

On the older fords the theft module has 2 plugs in them. You can disconnct one of them, I believe it is the right one , and disable the security system. Finding the module is the hard part. most are located in the middle of the dash.

May 20, 2011 | 1996 Ford Mustang

1 Answer

2002 mustang Gt 4.6l I changed the instrument cluster and now theft lite is flashing and car wont start. The new cluster is out of a 2003 Mustang SVT

You are going to have to get the security system reset. You will probably have to contact the dealership if you don't have the code.

Feb 17, 2011 | 2002 Ford Mustang

2 Answers

Security system on motor lockout unable to start

1. Attempt to start the car, let it stall, but DO NOT turn the key off! Leave it in RUN.
2. Wait 10 minutes or until the Theft System light glows steady instead of blinking.
3. Do not turn the key off, but start it immediately.
4. This should reset your Passlock system.

Once done, the key is re-programmed and should allow the fuel injectors to work again. The car would start now if corrected.

In some cases, the VATS (GM'S VEHICLE ANTI THEFT SYSTEM) will re learn the code this way, and will then allow the restart, however if this does not work, then you can simply tow it to any GM vehicle dealer to have the service department re code it.

There is a permanent solution though.Adding the PLJX Self learning Bypass module (69.95) will bypass the PASSLOCK system in your vehicle for good. See this at

Good luck and hope you get your Camaro running 100% again soon, O had installed the Passlock bypass to my in-laws Gt Grand Am and so for worked like a charm.

Mar 06, 2010 | 1997 Chevrolet Camaro

1 Answer

1997 mustang starts and then dies within few seconds. Theft light is blinking. What do i need to do to replace theft device or can i bypass it so it will stay running?

Is one of your doors open? If so, that is why the "Theft" light is blinking. According to the owners manual, it blinks to remind the driver to arm the system. If you lock the doors using either the power door lock switch or via the remote, the alarm indicator should then glow steadily. If the alarm was triggered you would not be able to start the vehicle at all.
Though the symptoms can be caused by many different reasons, I had a similar problem with the same symptoms. My problem stemmed from a faulty MAF sensor. I verified this via a DTC scanner that also displays the PIDS. One of the PIDs is the MAF (LB/M) reading which was way-high out of spec. After careful inspection I noticed that one of the heating wires extending out of the MAF Sensor body actually broke loose on one side. I half-hazardly soldered it and the problem was corrected. I will replace it with a new one since I don't trust the soldering job for durability.

Nov 07, 2009 | 1997 Ford Mustang Cobra

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