Hello, my Expedition will not start. It acts like the anti-theft sys is activated. The theft like blinks and it simply will not turn over. Any ideas why or how to fix it? Thanks!

Carmenb

 

Does the system 'prove out' for normal anti-theft vehicle enabling to occur, the THEFT indicator must prove out as follows...

Normal operating prove out on the THEFT indicator is two seconds ON then OFF after the ignition switch has been cycled from OFF to RUN/START position.

If normal two second prove-out occurs and the engine cranks for more than one second after the ignition switch is turned to the START position but fails to start, the fault is not with the passive anti-theft system pre-check.

Did you try a spare key?

Other possibilities could be wiring, transceiver, control module, modue communication problems....