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Theft light on and car will not start
1999 Ford F-150

Theft light on and car will not start

(1999 Ford F-150)
I just brought this truck cash and the anti-theft light would come on and the truck would not start until it stop blinking. Finally the truck will not start any longer. I have heard my igintion may need replaced. I went had the kep code re-done but this did not work. Help please
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Popular Answer
on December 07, 2010
The theft light blinking is a dead giveaway that there is an issue with the key(s) you are using and the Passive Anti Theft System module (PATS).

The key is obviously not communicating with the transceiver, or the code is wrong.

You must hook up a diagnostic tool to program the system, enter the security access (10 minutes) and then erase the key codes. Then you must have 2 keys to program gonig forward and follow the correct programming procedure.
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General Diagnosis
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on December 07, 2010
The theft light blinking is a dead giveaway that there is an issue with the key(s) you are using and the Passive Anti Theft System module (PATS).

The key is obviously not communicating with the transceiver, or the code is wrong.

You must hook up a diagnostic tool to program the system, enter the security access (10 minutes) and then erase the key codes. Then you must have 2 keys to program gonig forward and follow the correct programming procedure.
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