I am not sure about the Mercury Sable but my car does that also, 2003 Pontiac grand am gt, it tells you how to reset in owners manual. I have to turn the key to the on position, wait about 10 minutes and the security light in the dash starts blinking, when that happens...turn the key off and try to start it. Hope this helps
You can't bypass or reset security system, bring it to the dealer.
The factory alarm causing the issue would be the security light flashing above the RPM guage. If the security light is flashing and the car will not start, follow the directions listed below. To reset the factory alarm, turn the ignition switch to the "on" position NOT the start position for 15min. You will see the security light go off after 15min.
to reset the alarm system for a Mercury Sable when the alarm is causing the car not to start, place the key in the ignition. Turn the key only about halfway and leave it in this spot for 10 minutes before trying to start the car.
The security system prevents unauthorized operation of the car, your system has been tripped, and the car disabled. You will need to reset the security system to start it. If you have the original key you should be able to do it.
i had that happen to me be for and we had to take it to a dealer and have them reset the computer in your vehicle.
Turn key on and leave it on for ten minutes then it will go out and it will start. It thinks it is being stolen. Just did it to mine. Seems to reset the security system.
If the key for the Pontiac has a security chip in it as well, simply wait about fifteen minutes without doing anything and then your car should start. If the key does not have a security chip you may have to remove the battery to reset the system.
To reset the security system on a 2003 Mercury Mountaineer, first ensure that the vehicle is in the "Off" position. Disconnect the negative battery terminal and wait for about 10-15 minutes to allow the system to reset. Reconnect the battery terminal, then attempt to start the vehicle. If the issue persists, it may be necessary to consult the owner's manual or a professional for further troubleshooting.
Lock the truck with remote then unlock truck manually with key
depending on the year you can disconnect the positive battery cable for a few minutes and then reconnect it. it may reset the security system.
Put the key in the ignition and turn it to the on position. Leave in this position for ten minutes. Turn key to off then to start. This should reset the security and the car should start right up.
To reset the security system on a 2002 Jeep Grand Cherokee, insert the key into the ignition and turn it to the "On" position without starting the engine. Leave it in this position for about 10 minutes until the security light on the dashboard turns off. Turn the key back to the "Off" position, then start the engine. If the system still doesn't reset, you may need to consult the owner's manual or a professional mechanic for further assistance.