How To Shut Off Your Car's Anti-Theft Device - Pop-A-Lock (2024)

Advice From A Houston Locksmith On How To Shut Off Your Car’s Anti-Theft Device

At some point in time, it is possible that your car’s anti-theft system will briefly malfunction. This can happen for several reasons:

  • Your remote battery could be dead
  • The car’s battery could be dead – this would cause the key memory to be lost
  • You may have a damaged immobilizer chip in your key
  • You may have a damaged car door lock

If the anti-theft system is not working properly, then you will have to find a way to shut off the system manually so that your car can resume normal operation. If you have a damaged door lock, it might be smart to consider hiring a Pop-A-Lock locksmith. If you find that you are in a situation where your car’s anti-theft device stops working properly, keep reading for three ways to shut off the alarm yourself.

Method 1: Check the cylinder and key

Step 1: Check the battery on your fob. It is fairly common for the anti-theft system on a car to activate if your key fob is dead – a dead key fob is one that your car cannot “see”. Keep in mind that your key fob might not be dead, but the battery is simply not installed correctly.

Step 2: Check the door lock cylinder. If your vehicle has been damaged, during an attempted break-in or theft or otherwise, the anti-theft system might have been triggered. Check to see if the lock cylinder is damaged, and also check underneath the door handle – thieves have been known to use screwdrivers in an attempt to jimmy the door open.

If you find that the lock is damaged, the passenger side cylinder can also be used to shut off the anti-theft system.

Step 3: Check to make sure that you are using the right key to get your car started. It may seem ridiculous, but many vehicles have a valet door or key that performs only the function of unlocking a door. Though valet keys can unlock your door, they do not have a chip, and therefore cannot start your car.

Tip: Valet keys frequently have a different colored head, or a “V” inscribed on the key shaft.

Method 2: Turn on the ignition

If your engine has been locked up by the anti-theft system, you will be unable to start the vehicle. To disable the system and start your car, use the following steps.

Step 1: Check the anti-theft light. Most modern cars have a dash light that indicates that the anti-theft system has been triggered. The icon for the anti-theft system looks like a car and a lock combination. When this light is on and flashing (it will be either or blue), it will indicate that your car’s anti-theft system is activated.

Step 2: Turn on the ignition. Insert your car key into the ignition and turn it on just so that the accessories activate, but not the engine.

Step 3: Do a secondary check on the anti-theft light. If it is no longer blinking, turn the key to the “off” position and let your car sit for a couple of minutes. This allows the system to fully reset itself, or your car won’t start.

Step 4: Try starting the car fully. Put your key back into the ignition and turn the car all the way on. If your car still won’t start, make sure that the issue you’re experiencing isn’t a dead battery. If you are still unsure what the issue is, consider contacting one of Pop-A-Lock’s expert locksmiths.

Step 5: Repeat this process. Try to do these steps a second time to see if that does the trick.

Method 3: Insert the key into your car’s door

Step 1: Insert the key into the door lock. Even if you have a keyless car and do not typically use your physical key, use the side door on the driver’s side and insert the physical key into the lock.

Tip: Most, if not all, key fobs have a physical key within the fob. Look for a button that allows you to slide the physical key out of the fob.

Step 2: Turn the vehicle key to unlock the car door without releasing it. Hold the key for 30 seconds in this position. This will signal to your car’s system that you have the right key, and will enable you to bypass your car’s alarm system.

There are some cars that will recognize the key from you simply turning it back and forth in the door’s cylinder. It is best to try both methods: holding the key in the door, as well as turning the key both ways to disable the anti-theft system.

Step 3: Try starting the engine. Take the key out of the door and try starting your car’s engine. When you do this, however, make sure that the door cylinder remains in the unlocked position.

Unfortunately, it is possible to get stuck in a situation where either none of these methods work, or you are truly in a position where timeliness and care is critical. If you find yourself in this situation, or would simply prefer the help of a locksmithing professional, give your local Pop-A-Lock a call.

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How To Shut Off Your Car's Anti-Theft Device - Pop-A-Lock (2024)

FAQs

How To Shut Off Your Car's Anti-Theft Device - Pop-A-Lock? ›

Look for a button that allows you to slide the physical key out of the fob. Step 2: Turn the vehicle key to unlock the car door without releasing it. Hold the key for 30 seconds in this position. This will signal to your car's system that you have the right key, and will enable you to bypass your car's alarm system.

How do I get my car out of antitheft mode? ›

Put the key in the ignition and rotate forward two clicks to the “On” position that makes the dashboard light up, but don't try starting the car. Leave the key there for 15 minutes; it doesn't always take that long, but it can. After that time, check to see if the anti-theft light has gone out, if one was lit up.

Is there a fuse for anti-theft system? ›

The anti-theft or car alarm fuse is usually found in the fuse box on the driver's side. In some vehicles, the anti-theft fuse can be in the fuse box under the hood that's also on the driver's side. The fuse box should be behind the air filter.

What controls the anti-theft system in car? ›

An immobilizer, which acts as an anti-theft device, turns off one of the systems required to start a car's engine, often the gas supply or the ignition. This is done through the use of radio frequency identification between an ignition key transponder and a radio frequency reader in the steering column.

How do I turn off my car alarm without the key or remote? ›

Ways to stop a car alarm without a keyfob
  1. Check your owner's manual. Every vehicle is different. ...
  2. Lock your doors. ...
  3. Turn the car on. ...
  4. Turn the ignition to on and wait. ...
  5. Pull the fuse for the alarm. ...
  6. Pull the wires for your alarm. ...
  7. Disconnect the battery.
Jul 30, 2018

How do I permanently turn off my car alarm? ›

Kill the power. If all else fails, a last ditch option to disable your car alarm is to starve it of power by disconnecting the battery. One simple way of doing this is to remove the negative (black) battery connector from the battery.

How do I reset my GM anti-theft system? ›

Insert ignition key and turn to the “ON ” position. Do not attempt to start the engine. Leave the key in the “ON ” position for approximately 11 minutes. The security light will be steady on or flashing for the 11-minute period.

What happens if you remove the anti-theft fuse? ›

Thank you, ***** *****'ve checked the wiring diagrams, removing any fuse for the immobilizer or keyless entry will disable the car, and it won't start.

Is there a fuse to disable car alarm? ›

Locate the appropriate fuse box.

Use the vehicle's owner's manual to identify the box with the fuse powering your factory car alarm. The fuse box may be located in the engine bay or the cabin of the car. If it is located in the cabin, you may need to remove some trim pieces to be able to access it.

What is anti-theft code? ›

A car radio code is a short string of numbers associated with a security feature found in some head units. Its purpose is to prevent theft by rendering a stolen head unit useless when it's disconnected from the battery. However, ​this feature also kicks in if your battery dies.

What is the active disabling device on a car? ›

Standard on many current cars. Active disabling device: a cut-off system that you have to turn on to prevent the fuel, ignition, or starter from operating. Typically controlled by a button on your car key, active disabling devices require you to take action to protect the car.

Can you reset a car immobiliser? ›

Reset the alarm via your remote control (unlock button), the alarm dash led will be flashing rapidly. Turn the ignition on and enter your 4 digit code, the keypad led will turn on for 5 seconds, the unit will reset the immobiliser, the alarm dash led will turn off, the vehicle can now be driven.

How do you disable an engine immobilizer? ›

One way is to disconnect the battery. This will disable the immobilizer, but it will also disable other electrical systems in your car. Another way is to remove the fuse that powers the immobilizer system.

What button do you press to turn off car alarm? ›

Then, reach into the vehicle and press the "panic" button located on the driver's side door panel. This will deactivate the alarm and reset it for future use. Finally, press the power door lock switch again to secure all doors and turn off the alarm completely.

What is the override button on a car alarm remote? ›

: The Override/Programming button is a hidden push button switch that can be used to disarm the security system if your remote control transmitter is lost or stolen.

Will car alarm go off if unlocked? ›

Manually unlocking the door should disarm the car's alarm system. But even if the alarm goes off, it is still healthier to get out of the hot car. The alarm will shut itself off after 3–6 minutes anyway.

Can anti-theft system drain battery? ›

Some Security Systems for Cars Will Drain the Battery

The wiring to the alarm on these systems goes directly to the battery, and they will slowly take away energy from the battery. Eventually, this can lead to the failure of the battery. It generally happens later in the life of a battery.

Why is the anti-theft light blinking? ›

The security indicator light blinks when the key is out of the ignition. This means the immobilizer system is active. This keeps the engine from starting if someone tries to steal your car. Some cars also arm an alarm system.

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