We have a 2000 taurus that when parked on level gound the system activates..
if i do not lock the car and get in it activates..
we can reset the sytem.. with either set of keys
Sometimes it activates and will not let us start the car until after 4-5 key resets//.. all the time the horn/alarm is blasting
I have tried to short the battery termainals together.. null point..
I have left the battery off all night to reset the computer.. no good
I could not find a fuse blown either under the hood or the dash..
or a relay that says alarm??/
I read something about a valey reset switch under the dash..have found none..
the neighbors are complaining
and it make it hard to sneak in at 2:00 a m lol
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Hi Carol , do you mean PATS passive antitheft system ? Locked up your car ,do you mean it won't crank over an start ?
The passive anti-theft system uses radio frequency identification technology to deter a driveaway theft. Passive means that it does not require any activity from the user.
During each vehicle start sequence, the ignition key identification code is requested by the vehicle protection anti-theft electronics.
If the key's ID code has been programmed into the system, the powertrain control module (PCM) (12A650) is signaled to enable the vehicle to start.
If the key's ID code is not programmed into the system, or if no encoded key is detected, then the powertrain control module is signaled to disable the vehicle.
The passive anti-theft system communicates the state of the security system to the powertrain control module via the J-1850 communications network data link connector (DLC). The powertrain control modulebased on the communications from the passive anti-theft system, will determine if the vehicle's engine is enabled to start.
The passive anti-theft system differs from the active anti-theft alarm system in that the passive anti-theft system enables/disables the vehicle from starting and only operates with the ignition switch in RUN/START position. The active anti-theft alarm system has perimeter protection capabilities and operates only with the ignition switch OFF. Refer to Section 13-11A for active anti-theft alarm system information.
The passive anti-theft system will be activated and disable the vehicle from starting if any of the following conditions exist:
damaged encoded key
non-encoded key (key has no electronics)
Passive Anti-Theft System (PATS) control module concern
It is possible that the car's alarm/immobilizer system is preventing the vehicle from starting. Manufacturers, in an effort to prevent car theft, have the immobilizer activate if the battery circuit is interrupted for more than a certain number of minutes. This keeps car thieves from cutting battery cables to prevent alarm activation. If the battery goes flat-line dead, the same thing can occur. You need a special tool available at a dealer or repair facility to reset the immobilizer.
Sounds like your cars security system thinks someone is trying to take your car or trying to tell you the car is not fully locked up? Here a few ideas
_Is your car parked on a hill? Your car thinks it is being towed away!
-Another thought is that when you lock the car, one of the doors or a hood is not fully closed and the car is telling you the car is not securely locked up?
-Is your car in park when you lock it. If not it may be telling you it is not in park?
-Did you leave a set of keys in the car?
-Did you leave the lights on?
-I know when you fist go your car after being parked for a time and you see the alarm light flashing, it indicates someone tried to open your car. Did you go back and check the car was locked and activate the security system?
Let us know if this helps.
You may have a bad door switch. The alarm is usually wired into the door adjar switch amongst other things. If the alarm system is being told that your door is still adjar due to a bad switch in the door jam then it's quite possible that the alarm system will not operate the locks if it thinks the door is adjar in which is also evident by the dome light staying on. Sounds like a switch. If not the switch then I would lean more towards the alarm system being responsible.
Good Luck. I hope this has at least narrowed down your search if not pinpointed it.
The gear selector is locked until the system detects the brake pedal is being pressed, the brake circuit then sends a signal to the shifter release solenoid to pull a pin back and let you shift out of park, this is a safety feature required by federal law, U need to have someone see if the brake lights go on when you press the pedal, if they don't check the switch at the top of the brake pedal, if the brake lights work then the little solenoid is defective.