Skip the auto shop - Our mechanics make house calls

Q: Engine will not turn. Neither key cranks.

asked by on

The anti-theft system light blinks rapidly when trying to start the truck. Engine will not turn and I had to replace a bad battery. Now, neither key cranks the vehicle.

Anti-theft systems are great deterrents for would be thieves. However, when the system malfunctions, the owner of the vehicle is left out in the cold. Unfortunately, it is highly likely that the Passive Anti-Theft System (PATS) in your Explorer has “forgotten” the key codes allowed to start your engine. Although rare, this can occur after a battery dies. Sadly, the only solution is to either have the vehicle towed to your local Ford dealership, or find a mobile locksmith capable of programming the engine computer on sight. In either case, make sure you have all of keys with you, as each one will have to be reintroduced to the anti-theft system. Only the keys present will be considered valid to start the engine. If you have a roadside assistance plan, you may want to contact them to see if they offer such services.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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: Starter fuel pump noise

Hello there, many different faults can be causing your 2000 Jaguar Vanden Plas to not start. The most common issue that could still cause this is a bad battery. But since you said you already had that changed, other possible...

Q: Exhaust fumes leaking into the car

This concern could be caused by a cracked exhaust manifold. Is the Check Engine light on? If so, a certified, local mechanic, like one with YourMechanic, could diagnose the problem with a scan tool. Due to the poisonous nature of...

Q: Vibration on startup - 2004 Nissan Sentra

A lengthy Technical Service Bulletin (TSB) dealing with this issue was published by Nissan in 2006. The TSB outlines a repair procedure for the fuel pump that resolves a known issue with fuel leaking back into the tank instead of...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...