Can thieves bypass car immobiliser?

Can thieves bypass car immobiliser? Discover whether thieves can bypass car immobilisers in this informative blog post. Explore various techniques they may use and find out how to protect your vehicle.

Can thieves bypass car immobiliser?

Car theft is an unfortunate reality that car owners must be aware of. With the advancements in technology, car manufacturers have implemented various security systems to protect vehicles from theft. One of the most common security features found in modern cars is the car immobiliser. But can thieves bypass this security feature?

A car immobiliser is an electronic security device that prevents the engine from starting unless the correct key or transponder is present. Essentially, it immobilises the vehicle and makes it difficult for thieves to steal it. This technology has indeed reduced car theft rates significantly. However, it is important to note that no security system is completely foolproof, and determined thieves can sometimes find ways to bypass them.

Methods used by thieves to bypass car immobilisers:

1. Electronic hacking: Skilled thieves with knowledge of electrical systems and computer programming can attempt to hack into a car's immobiliser system. They can use tools to override the immobiliser's signal or reprogram it to accept incorrect keys or transponders. This method requires technical expertise and is not commonly used by opportunistic thieves.

2. Relay attacks: A relay attack involves using two devices to intercept and transmit signals between the car key and the immobiliser system. Thieves can use this technique to trick the immobiliser into thinking that the key is nearby, even if it is far away. By doing so, they can start the car and drive away without needing the actual key.

Countermeasures to protect against car immobiliser bypass:

1. Additional security layers: Car owners can enhance the security of their vehicles by installing additional security layers, such as steering wheel locks, wheel clamps, and GPS trackers. These measures act as deterrents and make it more difficult for thieves to steal the car, even if they manage to bypass the immobiliser.

2. Thatcham-approved immobilisers: Thatcham Research, a British automotive research center, approves security devices based on their effectiveness. Installing a Thatcham-approved immobiliser can provide added peace of mind, as these devices undergo rigorous testing to ensure their resilience against hacking attempts.

3. Park in safe, well-lit areas: Thieves prefer targeting vehicles parked in secluded or poorly lit areas. Parking in well-lit and secure locations reduces the chances of a thief attempting to steal your car and bypass the immobiliser.


While car immobilisers are effective in preventing most car theft attempts, it is crucial to acknowledge the possibility of determined thieves finding ways to bypass them. By implementing additional security measures and being cautious about where you park your car, you can reduce the risk of car theft. Remember that staying informed and proactive is key to protecting your valuable asset from potential theft.

Frequently Asked Questions

1. Can thieves bypass a car immobiliser without the key?

Thieves generally cannot bypass a car immobiliser without the key. Immobilisers are designed to protect the car from unauthorized access and prevent it from being started without the correct key or key fob.

2. Are all car immobilisers the same in terms of security?

No, not all car immobilisers are the same in terms of security. There are different types of immobiliser systems, ranging from basic to advanced. Advanced immobilisers with encrypted codes and multiple layers of security are much more difficult for thieves to bypass.

3. Are there any known techniques or devices that can bypass a car immobiliser?

While it is always possible for thieves to develop new techniques or devices, currently, there are no known widely available ways to bypass a car immobiliser without the key. Thieves may attempt methods such as trying to clone the key fob signal, but these techniques are sophisticated and require advanced knowledge and equipment.

4. Can a car immobiliser be hacked remotely?

Although it is theoretically possible for a car immobiliser to be hacked remotely, it is extremely rare. Immobiliser systems with wireless technology can be vulnerable to hacking attacks, but these are very advanced methods that require access to the car's system and expertise in hacking techniques.

5. Can a car immobiliser be deactivated or disabled?

In some rare cases, car immobilisers can be deactivated or disabled due to technical issues or malfunctions. However, this is not something that thieves can easily do. If you suspect your immobiliser is not working correctly, it is important to have it inspected and repaired by a professional automotive technician.

You may be interested