How to Deactivate Toyota Immobilizer?

For some Toyota lovers and owners, one thing they may want to know is how to deactivate Toyota immobilizer. The immobilizer is a crucial car component and evidence of automobile tech advancements, especially in preventing car theft. If you have the immobilizer unit in your car, it will prevent unrecognized parties access to your car.

To understand how the immobilizer works, when you insert a key into the ignition switch or use a smart key, the key sends info to the vehicle’s engine control unit. The car will start if the code in the key or smart key fob matches that in the immobilizer. If there is no match, the car will not start, and this helps prevent car theft. However, there are situations, which we will look at later on, that may compel you to deactivate car immobilizer.

Deactivation is a complex process, but based on our experience, we can guide you on how to go about it.

How to Deactivate Toyota Immobilizer: Step By Step Guide

Before going through the step-by-step process of Toyota engine immobilizer reset targeting its deactivation, we can look at some of the reasons behind this move. The most common is when the immobilization unit malfunctions. In case of a malfunction, you may fail to start the car or, in a worst-case scenario, make it vulnerable to theft. While there is an option for repairing the failed system, it is quite expensive.

toyota engine immobilizer reset

You will also need to deactivate the immobilizer if getting into some auto sporting events. Some autosport regulating bodies will require you to disable this system before getting access to the course or track. Another instance where you may want to deactivate this car component is when you have a second-hand unit, and you want to change it.

Follow the steps highlighted below to know how to remove the Toyota immobilizer function.

Read Also: How To Deactivate Honda Immobilizers

Step 1: Check Your Key and Door Cylinder

If your engine fails to start, indicating that the immobilizer is on and preventing access, you have to confirm that everything is alright. Ensure that you are using the right key and if not, look for the right one. It applies in situations where you have a separate key for opening the door and turning on the ignition or using a smart key. Rule out battery issues on your smart key fob by inspecting them and, if possible, get a replacement if you suspect that the smart key battery is dead.

Also, check on the door cylinder to see if it is in the right shape. At times, the burglars may use too much force on the door as they try to gain entry, and it may end up damaging the cylinder. If everything is okay, you can proceed to the next step.

Step 2: Bypassing the System

Looking at how to bridge immobilizer, you need to have your door key to bypass the system. Check for the antitheft light on your dashboard, usually red or blue, then turn on the ignition to activate the car accessories rather than start the engine. Allow the key to rest in this position for 10-15 minutes, and recheck the antitheft light. If the light is not blinking, switch off the ignition and let it rest for around 3 minutes. The resting time makes the immobilizing system recognize your key and reset itself. Try and start your engine; if it does not start, repeat the process two more times.

Step 3: Use Your Car Door Key

You can also deactivate Toyota immobilizer using the door key, where you turn the key on your door as if opening it but do not open the door. Hold the key in place for around 30 seconds to let the immobilizer unit know that you have the right key. You can try turning the key on both sides, locking, and unlocking. The action will aid you in bypassing the system and deactivating the immobilizer if it recognizes the key. Now try starting the engine, leaving the door in an unlocked position.

If these methods fail, you can check out this video, which will give you tips on how to hack the engine control unit to gain access to your car. In this case, you may also need a Toyota immobilizer reset tool to help you with some parts of the programming.

Frequently Asked Questions ( FAQs)

Q: How Do I Override My Immobilizer?

If you have your car keys, you can easily override your immobilizer, where you use the key to turn on the car accessories. Let the key rest in the position for about 15 minutes, which gives the immobilization unit ample time to recognize the key. Turn off the ignition and let it rest for 3 minutes, then try starting your engine. You can also try hacking your car’s ECU if you have the right tools, an excellent way for immobilizer bypass without a key.

Q: How Do I Reset My Toyota Antitheft System?

If you can’t start your vehicle’s engine, you can use the key trick to reset your antitheft system. When in the car, check the antitheft light to see if it is on; if on, it means the immobilizer is on. Use your key to turn on the car but not start the engine. The key should be in the position for 10-15 minutes, during which most of the car systems are running, which will also allow the antitheft system to reset. Recheck the antitheft light; if it is off, try starting your car. You can also long-press the panic button on your smart key to reset the system in some vehicle models.

Q: Can You Deactivate Immobilizer?

Yes, you can deactivate the immobilizer, and there are several ways to pull through, like using your car key on the door or the ignition. In this case, you put the key in either of the places and give ample time to let the immobilizer recognize the key and reset it. If you want a full deactivation, you can try hacking the system, which you can pull through with the right program and tools box.

Q: How Do I Know If My Immobilizer Is Working?

If your car has an immobilizer, you will know it is working if it performs its basic functions, for example, locking and unlocking doors and starting the engine upon command. Additionally, you will see the antitheft light on the dash have a solid color. Any deviation from its standard functionality is a hint that it has an issue.

Q: Why Is My Immobilizer Light On?

The immobilizer light indicates whether you have the right key or not. If you turn on the engine and it starts, you will see a solid light, which will go off shortly, indicating that you have the right key. However, if you do not have the right key, you will see the immobilizer light flickering.

Q: How Do I Find My Immobilizer Code?

You may need an immobilizer code if you want to program car keys or have issues with the immobilizer system. You can get it from your car dealer, where you have to confirm car ownership by providing your vehicle identification number and other necessary details. Some dealers will require the vehicle’s emergency key access code.

how to remove toyota immobilizer

Final Words

The car immobilizer is a crucial part of the car, helping in curbing car thefts. It works by preventing the engine from starting; thus, the vehicle won’t move. Despite being signed to the car, there are times it will malfunction and deny you access to the vehicle. In such a case, you can rely on this article to help you bypass the immobilizer and start your engine. Always make sure that your key and door are in the right form before you opt for a bypass.

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Hi there, I am R. Hasan Tito, a mechanic, and owner of this website. My friend and I created this website to share our knowledge, expertise, and experience with our fellow mechanics' community and car users. I am a specialist and certified automotive mechanic (Both Heavy Commercial and Private Cars). I worked as a Mechanic and Mechanic Supervisor for over fifteen years at Global Rebound Automotive companies - Toyota, TATA, BMW, Nissan, TVs, and Others. Now, I enjoy my new role of leading a team of automotive experts (in their respective fields) and publish new content on a regular basis on my website and social media.

2 thoughts on “How to Deactivate Toyota Immobilizer?

  1. Tito, How to delete a original transponder from my 2017 toyota camry le key fob and add to a new key . Somebody made a duplicate key to my vehicle.

    Can you please help me?

  2. Thanks for the information. Mine Land Cruiser 2005 has put itself into the lock mode. It cranks but can’t start the engine. Checked pump is good but it can’t supply diesel to the injectors.
    What could be the solution to this problem?
    Thanks and I’m looking forward.

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