Question about 1998 Ford Mustang
Anti theft relay
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Posted on Jan 02, 2017
Either you may be using a key that you had copied from the original or your chip went bad in your original key. Most of cars now a days have the key censor in the key so if it is the incorrect key it will not start your car or if it does not read that chip it will not start
Posted on Feb 05, 2009
This means that your key is not being recogonized.Ethier the chip in the key is bad or the patts transciever at the lock cylinder. Do you have a spare key? If not you will have to get 2 new keyss cut and programmed.
Posted on Feb 16, 2009
The theft light blinking fast because there is a problem with the PATS ,(passive antitheft system). You either have a bad chip in one of your keys,PATS transceiver on ignition cylinder or computer. If it is a key you would have to have them programmed into system which requires you to have 2 keys and certain diagnostic equipment to program them into sytem. I would take it to your service provider or someone who has the equipment to do this like a ford or lincoln, mercury dealer.Have a good one!
Posted on Jul 12, 2009
Im not 100 percent but I would check the underhood fusebox. The lid should have a diagram stating the jobs of all of the fuses.
Posted on Nov 06, 2009
The theft light blinking indicates a PATS (perimeter anti-theft concern.It means that the computer has not recieved a signal from your key when trying to start the vehicle. A few things could be wrong.
1...The key you are using to start the vehicle is not programmed to the vehicle or broken internally. So try a different key(one that you know is programmed to the vehicle) if you have more than 1. If the theft light goes on and flashes when you try to start the vehicle, you must wait about 5 minutes before trying the second key because the computer goes into antiscan or theft mode and wont let any keys start the vehicle.
2... There is a small transciever ring located arount the key cylinder which recieves the key signal. The wiring for the tranciever runs down the steering column into the dashboard wiring. Sometimes these wires break. If you have a tilt steering wheel, move it all the way down and try to start, then try moving it all the way up and try to start. Keep in mind the antiscan that I mentioned in #1. If this works then you need to check the wiring at the base of the steering column. A white connector with 4 wires. Pull on each wire to see if any are broken.
3... Check fuse #30 on interior fuse panel. If it is blown then you will have to trace down the cause of the short. The ignition coils are on this fuse also so one could be shorted. Disconnect all ignition coils(you may have 8 located on each plug if 5.4l engine or 2 located on l+r front of engine if 4.6l engine) and see if the short is gone. If the short is still present disconnect the radio noise supression capacitors( small black box approx 1" x 1" square with a single wire coming out) that are located on the left and right front of the engine. Pay close attention to all the wiring around the coils, look for any areas that may have rubbed thru and shorted.
These are things that I would look for first and are the most likely causes. This should get you started in the right direction. Be patient and post your findings if you fix it or not.
Posted on Apr 10, 2010
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