Polski
Why You Should Secure Your Car with a CAN Immobilizer
Protect Your Vehicle from Modern Theft Techniques
Car theft is becoming more sophisticated, with criminals using advanced techniques to bypass traditional security measures. Factory immobilizers and alarms often fail to protect against these new threats. One of the best ways to ensure your vehicle’s security is by installing a CAN Immobilizer.
This article explores the risks drivers face, why standard security systems are inadequate, and how the Carguard CAN Immobilizer offers top-tier protection.
The Biggest Threats to Your Car’s Security
Relay Attack: How Thieves Steal Cars Without a Key
One of the most common car theft methods is the relay attack, which allows criminals to unlock and start your car without needing your key.
How Relay Attack Works
- Two criminals work together, using signal-boosting devices.
- One thief captures the key’s signal from inside your home.
- The second thief transmits the signal near your car, tricking it into thinking the real key is present.
- The car unlocks and starts, allowing them to drive away unnoticed.
Key Cloning: Replicating Your Car’s Key
Car thieves can also clone your key fob using digital tools. Once a cloned key is made, they can unlock and drive your vehicle as if they owned it.
OBD Port Attacks: Reprogramming the Car’s System
Every modern vehicle has an On-Board Diagnostics (OBD) port, which thieves can exploit to program a new key and take control of your car in minutes.
Why a CAN Immobilizer is the Best Solution
How Does a CAN Immobilizer Work?
- Blocks engine start – Even if thieves access your car, they cannot start the engine without proper authentication.
- Prevents relay and key cloning attacks – The system does not rely on the key fob’s signal, making it immune to hacking.
- Uses hidden authentication methods – Owners must enter a PIN using the vehicle’s built-in controls.
- Invisible to thieves – The immobilizer does not emit detectable signals, making it impossible to locate or disable.
Why Choose Carguard CAN Immobilizer?
Unmatched Security Features
✔ No key cloning risk – Works independently from the factory key fob. ✔ Hidden authentication – Enter a PIN using your car’s existing buttons. ✔ Service mode – Allows temporary deactivation for maintenance without revealing your PIN. ✔ No additional devices required – No extra key fobs or tags that could be lost or stolen. ✔ Compatible with most vehicles – Works with a wide range of brands and models.
Simple and Discreet Protection
Unlike traditional alarms that can be noisy and ineffective, the Carguard CAN Immobilizer operates silently and invisibly. No sirens, no flashing lights—just advanced security that thieves cannot bypass.
Protect Your Vehicle Today!
Car theft is a growing problem, but you don’t have to be the next victim. The Carguard CAN Immobilizer provides the most advanced security for your vehicle, ensuring that thieves cannot drive away with your car.
Ready to Secure Your Car?
Explore our car security services and book your CarGuard CAN immobiliser installation today — fully mobile service across the UK.
TuneCar
TuneCar Solutions LTD (Company No. 16058411) is a TASSA-certified, fully mobile vehicle performance and security company covering the United Kingdom. Our expert team provides ECU remapping from £199 and CarGuard CAN immobiliser installation — coming directly to your home, workplace, or any convenient location.
View all articles →Frequently Asked Questions
Why is a factory alarm not enough to protect against modern car theft? +
Modern car thieves use techniques such as relay attacks, OBD key programming, and signal jamming that bypass factory alarms entirely. A factory alarm relies on detecting physical intrusion or unexpected door contacts, but relay attacks unlock the car legitimately using an amplified key signal, so no alarm is triggered. A CAN immobiliser adds an independent layer that stops the engine from starting regardless.
Can thieves bypass a CAN immobiliser? +
CAN immobilisers are extremely difficult to bypass because they operate at the software level within the vehicle's CAN-BUS network and require an encrypted secondary authorisation. There is no standard 'bypass' tool available for professional systems like CarGuard. Attempting to remove it without authorisation triggers tamper alerts.
Is it worth fitting a CAN immobiliser to a car that already has a factory immobiliser? +
Yes. Every modern car already has a factory immobiliser, but it can be defeated by relay attacks and OBD key cloning — the two most common forms of vehicle theft in the UK today. A CAN immobiliser provides an additional independent security layer that protects against these attacks and offers peace of mind that the factory system cannot.