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when an anti-theft module 16 is tripped and the vehicle won't start, the only way to fix it is to reset the system using factory software or a high-end scan tool. You may be able to find a mobile mechanic/locksmith with the software who can come to you, but most likely you will have to get the vehicle to your local dealer.
Will not crank how ? What happens when you turn the key to the start position ? Nothing or the engine spins around ? Does the security light flash fast ? anti-theft system problem . Anti-theft system problem will keep the engine from cranking .
If the anti-theft light is flashing, I would think it is a problem with the key or the anti-theft system. The system would kill the power to the fuel system.
Usually means the sensor in the lock cylinder is not reading the code in the key. If the pass key system does not get the right signal from the key the truck will not start. You might try taking the key off your ring - put it in the lock and turn the switch on - but don't crank it for at least a minute. There are procedures to reset the anti-theft online - - if you do a search for resetting anti-theft F150 you can read them.
it does sound like your battery is the problem but have a local shop test it and the charging system and the anti theft system connections maybe the alarm is draining the battery with a poor connection..
This could be caused by either a faulty Crank Shaft Position Sensor or the anti-theft system. Try put key in, turn to ON position for EXACTLY 10 minutes, As SOON as anti-theft light shuts off or stops flashing, then IMMEDIATELY start the engine.
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