How to Deactivate Toyota Immobilizer – Guide for Drivers

Every automobile owner desires that their vehicle will be as secure as possible. Toyota owners may be wondering how to deactivate Toyota immobilizer. The immobilizer is an important car component and proof of automotive technological developments, particularly in avoiding car theft.

If you have an immobilizer device in your automobile, it will prevent unauthorized people from accessing it. If you want to disable your automobile’s immobilizer, you first need to inspect your key and cylinder.

Most of the immobilizers are small enough to be used with other kinds of electronic components in a vehicle. The Toyota security system is specially designed throughout the main BCM and PCM, which control major parts of the vehicle’s operating system.

As the engine immobilizer is such an integral part of the Toyota anti-theft system, you may be wondering why some drivers choose to deactivate it.

What Exactly Is An Engine Immobilizer?

An engine immobilizer is a safety device that prevents the engine from being started in the event of abnormal conditions, such as a low battery or engine failure.

When drivers enter their car key into the ignition, an electric code is communicated from the key to the vehicle engine control unit. If this code does not match the engine immobilizer, the automobile will not start.

This also implies that any key other than the original car key with the matching code will be unable to start your vehicle.

A robber may still be able to break into your vehicle, but they will be unable to leave if the immobilizer is enabled.

Immobilizer system and key transponder location

The key transponder and the engine immobilizer are two distinct components of a vehicle. The engine immobilizer is usually located in the steering column, near the ignition. The transponder key, on the other hand, is linked to the actual smart key fob.

For automobiles that use push-start technology, the transponder key is supplied with the electronic key.

For automobiles with non-push start ignition, the transponder is attached to the back of the actual key, which is what you enter into the ignition.

Electronic Immobilizers

As technology progressed, traditional immobilizers evolved into modern electronic engine immobilizer systems with rolling/changing security codes. This system has two layers of protection, one with a permanent code and the other with a changeable code.

The sophisticated mechanism updates the second code and puts it into the smart key each time the key starts the ignition. When the ignition is switched off, the immobilizer analyzes the personal code first, followed by the second rolling code.

The engine is only permitted to start if both codes match. In the event of a mismatch or the absence of the second security code, the engine will not start, even if the ignition circuit is short-circuited.

Because of this advanced technology, codes on smart key and ECU cannot be easily replicated. Only authorized dealers can deactivate a lost key in the event of a key loss.

Improve performance with a car immobilizer

Car owners strive to optimize the performance of their vehicles. However, some may not be aware of helpful hints and tricks that help them achieve optimal performance.

By employing an immobilizer, your vehicle becomes much safer. This is because the system provides a level of security that prevents unauthorized access by anyone. While this might increase maintenance costs, it’s worth it to avoid having your car stolen.

Possible reasons to deactivate Toyota immobilizer

Because the immobilizer is an essential component of Toyota’s anti-theft system, you may be wondering why some drivers deactivate it. Immobilizers keep your car safe from theft, although they are sometimes turned off for the following reasons:

1. Having a used car

If you have a used car, the anti-theft system may need to be updated or replaced. If this is the case, you must first deactivate your vehicle’s immobilizer before making any adjustments.

2. Racing regulations

For some racing events, the engine immobilizer system must be disengaged. You may need to know how to deactivate Toyota immobilizer if you wish to attend specific race tracks and courses. This is due to the fact that various race organizers have varying rules.

3. Issues with the Toyota immobilizer system

In some circumstances, the Toyota engine immobilizer reset before it may be used again. Any issues with your vehicle’s immobilizer should be resolved as soon as possible.

How to deactivate an immobilizer: A Step by Step process

If you are interested in how to deactivate Toyota immobilizer, there are a couple of solutions to that. Check how to deactivate an immobilizer below and keep browsing our website. It deals with your car.

1. Check your car door and key cylinder

If your car’s engine fails to start, indicating that the immobilizer has been triggered and preventing entry, you must validate that everything is in order. Check that you have the right key.

This guideline applies in any case when you have two keys: one to open the door and one to start the engine.

In addition, inspect the key and door cylinder for wear and tear. When robbers try to break in, they may use too much force on the door, which might damage the door cylinder.

2. A bypass immobilizer module is required

On the dashboard, look for a blue or red anti-theft light. Turn on the ignition and start the car’s accessories not the engine — by inserting the key into the ignition.

Leave the key in this position for 10 to 15 minutes. Check the anti-theft light again to confirm that the alarm has been bypassed.

Turning the ignition off for two to three minutes will force the anti-theft light system to reset. This helps the system recognize the key and ensure that it doesn’t stay on when someone tries to steal the vehicle.

When this doesn’t work, try restarting the engine. If that doesn’t work, try again twice.

3. Using a key in your car’s door

The key can be used to deactivate Toyota immobilizer by opening the door and then turning the key to the ON position.

When the key enters the immobilizer for about 25-30 seconds for the first time, it can recognize that it is the right key. The mechanism can then be opened and closed again with the key.

If the immobilizer detects the car door key while attempting to override the system, start the engine and keep the doors unlocked.

Finding immobilizer code

An immobilizer code may be required to program the automotive keys. You may get the immobilizer code for your automobile from your dealer, but you must present proof of ownership, including the vehicle identification number, as well as supplementary paperwork.

Some dealers will additionally need the vehicle’s emergency key access code.

Сauses of problems with immobilizer

Just know that if there is a problem with the car key, most of the time it will be transmitted to the immobilizer. The key fob sends a signal to your vehicle’s security transponder, which temporarily disables the device.

Car unlock problems

Immobilizer issues don’t always manifest in the same way as car problems. Some malfunctions, such as a broken transponder key, may still allow the car to be unlocked or the immobilizer system to activate.

The immobilizer also doesn’t directly interact with the immobilizer. An internal issue with the car can cause problems starting and locking the vehicle.

Keyed door locks were shown to be a sad reminder of people’s subservient nature. But many vehicles still feature these locks, and they must be disassembled to access the car door key inside.

Rather than contacting a locksmith to access your car, change the smart key fob battery for a cheaper alternative. Most key fobs cost less than $2, and removing and replacing the battery on your key is much less expensive than hiring someone.

Issues with a car alarm system

The immobilizer will most likely have an audible alarm. So if you stop hearing the alarm when you open or close the door, there may be a problem. In addition, the continuous switch alarm system is an unusual sign.

Resetting the alarm on a Toyota Camry

  • Insert the key into the ignition.
  • Hold the valet button beneath the steering wheel until the dash security light lights.
  • The security light acts as a visual reminder when the car alarm is turned off.
  • Turn off the ignition.

What does the Engine Control Unit do in the immobilizer system?

The vehicle’s engine control unit is the digital brain of the engine, monitoring and managing the essential systems that keep the car safe on the road. Your ECU controls everything in the engine, from idling to ignition and everything in between.

The immobilizer works due to the matching code in the car key and the ECU chip. If you want to turn off the immobilizer, you need to use the door key.


How do I turn off my Toyota engine immobilizer?

The immobilizer is located in the anti-theft reinforcement. However, remember that the way to turn off the immobilizer will vary between the models.

An engine immobilizer prevents theft by preventing unauthorized use of your vehicle’s keys. However, it can be disabled with a spare code key or by removing the key from the switch position.

Either way, it leaves your car vulnerable without its keys, but disabling the engine immobilizer makes things much harder for thieves without a code key.

How do I get my Toyota out of anti-theft mode?

To exit Toyota’s anti-theft mode, disengage the immobilizer or override the system. To do this, insert your car key into the door and hold it in the “unlock” position for 25 seconds.

Start the engine and then leave the key in the ignition for 15 minutes. If none of the preceding techniques work to unlock your Toyota, you can try to override the ECU.

How do you deactivate an immobilizer?

Knowing how to deactivate your vehicle’s safety systems is important if you want to keep your car safe. Insert the ignition key first, but do not start the engine. Instead, simply turn the key to “on”.

Then you have to press a switch on the dash to activate it. Hold down the button until you hear the car siren go off. The Toyota Safety System will reset immediately upon hearing this tone.

How can I start my car without an immobilizer?

If your vehicle won’t start, it might be an immobilizer issue. If the immobilizer control module is broken, the module cannot read the code and hence cannot send data to the electronic control unit. As a result, the automobile will not start walking.

You can bypass the immobilizer by inserting the key into the lock slot, disabling the vehicle’s immobilizer for remote start.

You may also use the immobilizer bypass module to disable the car immobilizer. Most modules cost $30 or more, depending on the vehicle.

Video: How to Deactivate Toyota Immobilizer

In this video, how to deactivate Toyota immobilizer.


Securing a car engine is critical to any car safety system. This makes it nearly impossible for thieves to break into the vehicle when the feature is activated. Immobilizer problems are common and expected. They won’t always work without problems.

Anti-theft locks prevent your car from starting unless the correct key is used to open the doors or start the car. The system is effective in preventing car theft, but sometimes drivers may need to know how to deactivate Toyota immobilizer.

Here, we shared the various methods Toyota drivers can use to disable the immobilizer. All the methods we’ve shared can be done easily, but if your immobilizer still won’t deactivate, you may want to seek professional advice. Here is how to bleed brakes by yourself.

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