2001 Explorer; anti theft light steady; no power to car
Car ran fine yesterday. Today when tried to start with correct key, nothing happened. Anti-theft light is on, steady, no blinking. There seems to be no power of any kind to the car...no interior lights, nothing works, except i can plug in my cell phone charger and it shows it's charging. I have tried putting the key in the door lock and turning it both ways (suggestion to disarm anti-theft); that didn't help. Does anti-theft disable all electrical functions, including the starter, or do you think I just have a totally dead battery?
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This happens if you put the wrong key in accidentally. Get into the Explorer and insert the known correct key into the ignition and turn it. If you use the wrong key, such as one that was cut to open the doors, the system will remain armed. If the car then starts, then you have disarmed the anti theft system. If not, move on to this: Ford Explorer keys have large black plastic, or molded rubber, heads. Inside the head is a transponder chip that is programmed to a certain code so that the transponder recognizes the key. When you are sure you have the correct key, try to start the car with the spare, if you have it. If the car still refuses to start, move on to next step here: Wait 15 minutes, until you see the flashing rate on the red light on your dashboard decrease to normal speed and then try both keys again. If this still fails to start the car, raise the hood and disconnect the battery for 15 minutes, then reconnect it and try again.
Did you check the battery of the car (maybe loose cable)? but if it just happen suddenly, it might be your altenator that wasn't charging your battery. I think once there's enough power gone through the car then your anti-theft system should work as normal again.
your problem with chevy tahoe could be caused by the anti-theft G.M/ security system, do a quick test to find out. easiest way is to turn the key to the "ON" position the lights on dash should come on, and look for the one that states."SECURITY" it should be on steady , if it is flashing constantly than you have a problem with the security system. if not then you will need to scan test the vehicle computer on-board system with a scan tool. the failure codes should lead you to the problem.
if you are sure all wires are installed correctly check fuses... also you would have to match the ignition key start pellet to the anti theft computer. your old key might not be seen as the correct key by the system.