Factory Alarm problems - Ford Mustang Forum
 
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post #1 of 6 (permalink) Old 01-12-2011 Thread Starter
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Factory Alarm problems

The light "THEFT" on the information center is blinking and the car will start and run for les than 5 seconds, Does anybody knows how to disable the factory alarm system?
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post #2 of 6 (permalink) Old 01-12-2011
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With a hand held turner is one way.

Might be handy to mention the model year.

2003 GT Convertible (sold & missed)
2000 GT coupe (Craigslist project. Fixed. Now my DD). Windsor to Romeo swap.
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post #3 of 6 (permalink) Old 01-12-2011
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There should be a small button under the steering wheel that you can press to disable the alarm temporarily. As if you had to unhook the battery and restart the car. My car alarm always goes off if I hit the battery and won't start until I disable it using the button.
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post #4 of 6 (permalink) Old 01-12-2011
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Quote:
Originally Posted by wmburns View Post
With a hand held turner is one way.

Might be handy to mention the model year.
I read somewhere recently that disabling PATS requires a custom tune. And yeah, a little more info about the car might be slightly beneficial. It doesn't sound like a PATS issue though since it actually starts up briefly. I think OP is going to have to find the brain box for the alarm and cut power to it.


2001 GT Convertible

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post #5 of 6 (permalink) Old 01-13-2011
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If asked to guess, the OP's car is a 96-99 MY. The PATS system on these cars normally disables the starter. This gives a no crank symptom.

However, there is a version of PATS that needs an "OK to run" signal. The symptom is the car will start but shut off in 5 seconds. This was changed because ppl figured out that PATS could easily be defeated by jumpping the starter solenoid.

OBTW, taking power away from the PATS module will NOT work. Why? Because the PCM is expecting a signal from the PATS module in order to continue to work. Removing power to the PATS module has the same result as an attempt to steal.

Likely the OP has already attempted this (because the starter wouldn't work). Now the OP finds a new symptom where the motor shuts off after a few seconds.

The PATS system in a 96 or later MY can not be disabled by simple "wire cutting" means. It's far more effective to fix the system, reprogram the key, or disable with a hand held turner.

OBTW, some versions of PATS around the 96 MY can be reprogrammed with ZERO keys. The procedure takes 45 minutes to complete which makes it difficult to use to steal a car.

2003 GT Convertible (sold & missed)
2000 GT coupe (Craigslist project. Fixed. Now my DD). Windsor to Romeo swap.
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post #6 of 6 (permalink) Old 01-13-2011
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Or it could be he's trying to use a non-factory type key. We had that problem when we first bought my wife's Durango. only had one key so had one made (at Home Depot). Car would start but then shut off after a few seconds. That's when I learned about that PATS system.

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