How to Disable the Alarm System on Vehicles

by Contributing WriterUpdated June 12, 2017

The alarm system on your Vehicles acts as a theft deterrent, keeping would-be criminals from stealing your Vehicles. Vehicles alarm system sometimes suffers from false alarms, however, and you may wish to disable the alarm. Having it go off when it's unwanted can be embarrassing. To prevent the alarm from going off in the future, you need to know how to fully disarm the system.

Under The Hood:

 How to Disable the Alarm System on a Ford Van

Use your programmed SecuriLock key to unlock the door of the van. Once the van is unlocked with the programmed key, the alarm disables.

Located the van's fuse box. While different models may have fuse boxes located in different places, most Ford van's have a fuse box under the driver's side dash, close to the steering column.

Open the fuse box and look for the alarm fuse. Using a fuse puller so you don't damage the surrounding fuses, carefully remove the fuse from the box. Then, use the SecriLock key to start the car.

Items you will need

  • SecuriLock programmed key

 How to Disable the Alarm System on a 1995 Jeep Grand Cherokee

Insert the ignition key into the driver's side door lock.

Turn the key to the left, then to the right. This will disarm the alarm (if it is going off).

Open the hood and disconnect the negative battery terminal by loosening the nut on the negative battery terminal cable clamp and lifting the cable clamp off of the terminal.

Locate the purple/yellow wire under the driver's side kick panel. This is the factory alarm disarm wire.

Cut the factory alarm disarm wire with wire cutters, then strip off about a half inch of sheathing from both ends of the wire. Then, strip off a half inch of the ground wire using wire strippers.

Place all three exposed wire sections into a 3-way wire connector and crimp the connector to secure all wires together.

Strip one half-inch section off of the other end of the ground wire, then twist the wire end and insert it into a wire connector that has a rounded end with a hole through the center of it. These "washer-type" connectors are made to be slid under a bolt so that you can secure the wire as a grounding wire. Crimp the wire connector to secure the wire to the connector.

Unbolt one of the bolts on the dead pedal (the pedal all the way to the left that does not move) and ground the wire to the dead pedal by sliding the dead pedal bolt through the center of the wire connector and re-tightening the dead pedal bolt.

Items you will need

  • Wire cutters

  • Wire strippers

  • Ground wire

  • Socket wrench

  • Socket set

  • 3-way wire connector/splicer

  • Round wire connector

  • Crimping tool

 How to Disable the Alarm System on a Toyota Van

Insert the key into the ignition on your Toyota van.

Turn the key quickly from "Off" to "On" five times.

Return the key to the "On" position. The alarm system on the Toyota van is now disabled.

 How to Disable the Alarm System on a 99 Dodge RAM 1500

Pull the hood latch on your Dodge Ram. Exit the vehicle, raise the hood up and prop it up with the prop bar.

Slip the socket over the negative battery terminal bolt. Turn it to the left, or counterclockwise, to loosen it.

Pull the terminal up and off the negative post once you have fully loosened the battery terminal bolt.

Hold the negative battery terminal away from the battery and let it sit that way for approximately five minutes. This time will allow the system time to reset itself.

Locate the main relay box underneath the hood. It will be located on the same side of the engine block as the battery and fuse box. Pry the relay panel lid off with a flat-head screwdriver. Flip the relay panel cover upside down and inspect the relay diagram. The diagram shows you the location of the alarm relay. Pull the alarm relay up and out and then replace the relay panel cover. This disables the alarm, but allows you to still start your Ram.

Place the negative battery cable back on the post and tighten the bolt. Close your Ram's hood.

Items you will need

  • Socket set

  • Flat-head screwdriver

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