Q: Truck computer not recognizing key.

asked by on

My truck will not crank. When the key is in the ignition, the theft light blinks fast and the truck will not turn over. I think it might have something to do with the computer not recognizing the key.

The Ford PATS (Passive Ant-Theft System) will react like this when the key is not recognized. The key not being recognized could be one of 3 factors, bad key, faulty PATS antenna ring, or a faulty PATS computer. Try all available keys first to make sure it is not just one faulty key causing the problem, then you may want to enlist the help of a mechanic, like one fromYourMechanic, to use a scan tool to interrogate the PATS system to determine the faulty component and recommend the proper repair.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Truck computer not recognizing key.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: What Are Reprogrammable Car ECUs?

An electronic control unit (ECU) is comprised of many different computer parts soldered onto a circuit board to make up a complete ECU. The ECU uses different kinds of memory on its computer board. These memory chips are used for...

Q: Call won't turn over and it acts like it has been stolen.

I am working on this

Q: I have a 2000 F-150 the makes a whistling sound when applying or releasing the brake pedal. It sounds like air being let out of a

The brake booster uses engine vacuum to provide power assist when you step on the brake pedal. A component within the booster, such as the valve, and/or the external check valve or vacuum lines is probably leaking. The leak of...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...