Question about 1990 Ford Thunderbird

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I want to disconnect my alarm system from the ignition??

My car won't start without the alarm button, the alarm button was destroyed

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Unplug the wiring harness from the brain of the alarm system.

Posted on Feb 16, 2009

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How do you turn off an alarm for a 2005 Saturn Ion


Disarming an Armed System/Silencing an Alarm
If system arming has been requested by the keyless entry transmitter, it must be disarmed.
Important: Using the power door unlock switch or manually unlocking the doors does not disable the CTD armed mode. Also, disconnecting the battery or pulling fuses does not disable the armed mode, since the BCM stores the CTD mode status in memory.
?€¢
To disarm the CTD system in arm pending mode, SECURITY indicator flashing and doors open, perform 1 of the following:


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Press the UNLOCK button on the keyless entry transmitter.


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Insert a valid key into the ignition and start the vehicle.


?€¢
To disarm the CTD system in the armed mode:


-
Press the UNLOCK button on the keyless entry transmitter.


-
Insert a valid key into the ignition and start the vehicle.


?€¢
To disarm the CTD system when activated, alarming mode.


-
Press the UNLOCK button on the keyless entry transmitter.


-
Insert a valid key into the ignition and start the vehicle.

Jun 24, 2016 | 2005 Saturn ION

1 Answer

Alarm wont stop going off. Car wont start. Any way to disable it?


Plug your ears first, open the car with key, open the bonnet to get to the battery, disconnect one battery terminal and cover this with rag to avoid a short circuit. That should reset everything - alarm, radio. Do not lock the car. After an hour reconnect the battery. Hopefully alarm will have reset and then use the key in the ignition. Hopefully starts but you should buy a replacement button for your car and security system. If alarm sound again, disconnect battery again and call an auto electrician.

Dec 31, 2014 | 1995 Honda Accord

1 Answer

My Toyota Corolla 1.6 XLI 1993 won`t start. When I open the door the alarm goes off but without any sound. After a while the indicators stops blinking, then I try to start it again, but it doesn't even...


I'd start by reprogramming your alarm. You'll never get it to crank without first disabling it or removing it. Your owners manual will give detailed instructions as to how to do this.

May 23, 2014 | 1993 Toyota Corolla

1 Answer

Is it possible to disable the security system on a 2001 Pontiac Grand Am, in order to stop the key in ignition alarm/chime, from continually go off, even with the key out and doors locked.


that's a mechanical, not electronic issue. there is a micro switch which rests on the ignition lock cylinder which has failed. I'm not sure that it would be a simple matter of disconnecting it because you might need a while just to get to the circuit. and that circuit is not monitored by the alarm or computer.

Mar 12, 2013 | Cars & Trucks

2 Answers

92 Toyota 4runner truck was running perfectly fine Later in the day went to start and the alarm just started going off and wouldn't turn off. Truck won't start even with keys turned in igniti


The alarm system somehow got activated , this is usually because the battery becomes discharged or disconnected try doing this:
Remove the key from the ignition
disconnect the negative battery terminal
put the key back in and turn to ON
exit the truck and leave door open
reconnect the battery terminal
get in and leave door open, if the alarm horn stays off it should start.

Dec 07, 2012 | 1992 Toyota 4Runner

1 Answer

1997 Lincoln Continentalhorn won't stop honking


First, Have your Battery tested. The Alarm systems in Ford made Products are very sensitive to Voltage. There are 3 systems in the car which interrupt power, the Alarm system (horn honking) and the Battery saver and finally the starter interlock system.

The Alarm system will do several things to disable the car from starting. It will reduce the voltage to the starter to prevent the engine from turning over. Some will even kill the ignition system so that if the starter is jumped, the car still won't start.

The Battery saver will disconnect any system to prevent discharge below a minimum threshold. Unfortunately, when the Alternator is working extra hard to charge a really bad battery: it will disconnect the charging circuit because it reads the Draw going to the Alternator to produce the power as a parasitic drain. Even at 70mph I have seen the charging disconnected and the vehicle coast to a stop when the electric runs out.

The last system worth mentioning is the Starter interlock. Under the dash and at the top of the Brake pedal lever is a switch. When you press the brake pedal, the switch allows the starter to crank provided the shifter is not in D or R. Drivers feet routinely hit this switch and either move it or break it. When it breaks it can short and drain the battery.

As you mentioned a Random problem, the Brake switch can shake to create a random problem if it is loose or broken. Your rear brake lights can be affected.

With the horn honking, at least part of your problem is the Alarm system. You can have a bad ignition switch too, which reads the keychip to disable the alarm. Your keychip may be bad and setting off the Alarm.

I had a new Lincoln myself which set off the Alarm randomly. I actually slept inside the car one night so I could turn off the alarm in the Apartment complex parking lot. Did'nt know if it would start again if the battery was disconnected and then reconnected. The Battery was shorted with less than 1000 miles on the car. It was a factory defective battery less than 3 months old.

But your car has many years and miles on it so it was worth mentioning the wear items. I hope my solution is helpful.

Sep 07, 2012 | 1997 Lincoln Continental

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