Explore Our Range of Vehicle Immobilisers
WHAT IS AN IMMOBILISER AND WHY WOULD I NEED ONE
A vehicle immobiliser is an electronic security device installed in a vehicle to prevent it from being started without the correct key or authentication. It works by disabling one or more critical systems required to start the engine, such as the fuel system, ignition, or starter motor. This makes it much harder for thieves to steal the vehicle, as they cannot simply hotwire it or use a duplicate key.
Vehicle immobilisers are commonly used as an anti-theft measure and are often integrated into modern car security systems. They can be factory-fitted by the manufacturer or added as an aftermarket accessory. Some advanced immobilisers even use RFID (Radio Frequency Identification) or smartphone apps for added security.
Based in St Helens, Merseyside, PL-Autotek installs aftermarket vehicle immobilisers for customers across the North West — including Liverpool, Warrington, Wigan, and beyond. Whether you drive a Ford, Volkswagen, BMW, Toyota, or a van or commercial vehicle, we can advise on and fit the right immobiliser system for your needs.
Relay Attack — Keyless Car Theft Explained
Relay attacks, also known as keyless car theft, are one of the most common methods used by modern car thieves — and they can steal your vehicle in under 30 seconds without ever touching your keys.
Here is how it works: two thieves work together. One stands close to your home with a device that captures the signal from your key fob — even through walls and doors. That signal is instantly relayed to a second thief standing next to your car. Their device tricks the car into thinking the key is present, unlocking the doors and allowing the engine to start.
No smashed windows. No forced entry. No noise. Your car is simply gone.
A Thatcham-approved immobiliser or GPS tracker with CAN bus integration stops this attack dead — the vehicle cannot be started even if the thieves get in. Call us on 07800 538658 to find out which system is right for your vehicle.
OBD Port Attack — How Thieves Clone Your Key
OBD port theft is a method where criminals use the On-Board Diagnostics (OBD) port — usually located under the dashboard near the driver's seat — to gain direct access to your vehicle's electronic systems.
Using specialist tools, thieves can connect to the OBD port, download the digital key data stored in your car's Engine Control Unit (ECU), and programme a blank key fob to work as a perfect copy of your original key. The whole process can take less than two minutes.
Once they have a cloned key, they can return at any time, unlock your vehicle and drive away without any signs of forced entry — leaving your insurance claim complicated and your vehicle potentially unrecoverable.
A CAN bus immobiliser such as the CAN Immo or Starline S9 protects the OBD port and prevents key data from being accessed or copied. It is one of the most effective defences against this type of attack.
Digital (pin-code or Ghost type) Immobilisers
NEW CAN IMMO
The NEW CAN IMMO is a high-tech security device designed to protect your vehicle from theft. Here are some key features:
- CAN/LIN Bus Communication — communicates bi-directionally over CAN and LIN bus systems, making it highly effective at preventing unauthorised access.
- Digital Immobilisation — protects against key cloning, keyless range extension, and hacking of the key code.
- Compact Design — electronics are compact, allowing for covert installation within the vehicle's wiring harness.
- Automatic Arming — the system arms itself automatically every time the ignition is switched off.
- Disarming Options — disarm using existing switches in your vehicle, or wirelessly via RF or Bluetooth.
- PIN Code Entry — requires a PIN code before each trip, similar to entering a PIN for a bank card.
- Compatibility — works with a wide range of vehicle models. Please contact us before booking to confirm suitability.
A proven, Thatcham-approved immobiliser system
The Nemesis 2 is the next generation of digital vehicle security. Designed for high-value vehicles and owners who refuse to compromise, this TASSA-approved system provides a near-impenetrable layer of protection that stops modern thieves in their tracks. Unlike traditional alarms, the Nemesis 2 is completely silent and untraceable by the scanning equipment used in relay attacks.
- TASSA Approved Security: Fully recognised by insurance companies, potentially lowering your premiums while providing elite-level protection.
- Triple Immobilisation Technology: Goes beyond standard systems by securing multiple digital and physical points, ensuring the vehicle cannot be moved without your unique authorisation.
- Bluetooth Proximity Sensing: Use your smartphone or a dedicated encrypted tag as a secure "key." The system disarms as you approach, offering seamless protection without manual input.
- Secure PIN Code Entry: For ultimate backup, set a custom sequence of 2 to 20 presses using your vehicle’s existing steering wheel or dashboard buttons.
- Undetectable by Thieves: The Nemesis 2 emits no radio signals and has no tell-tale LEDs, making it invisible to thieves using signal grabbers or diagnostic scanners.
- Anti-Key Cloning & Relay Attack Protection: Specifically engineered to defeat the most common theft methods used in St Helens and across the North West today.
- Service & Valet Mode: Easily suspend the system when your vehicle is in for maintenance, without having to reveal your private PIN code.
NITRO CAN IMMOBILISER (TASSA APPROVED)
The Nitro CAN Immobiliser is a stealth-focused security solution engineered to protect modern vehicles from the most sophisticated theft techniques. Fully TASSA-verified and insurance-recognised, the Nitro system integrates seamlessly into your vehicle's digital network, providing a silent but absolute defence against relay attacks, key cloning, and OBD hacking.
- TASSA Verified Protection: Independently tested and certified, making it a trusted choice for insurance providers and vehicle owners alike.
- Zero Footprint Technology: The Nitro emits no radio signals and uses no visible indicators, ensuring it remains completely hidden from thieves using electronic scanning tools.
- Automatic Armed State: Peace of mind comes as standard; the system automatically arms itself the moment you switch off the engine, ensuring your vehicle is never left vulnerable.
- Custom PIN Authentication: Take control with a unique disarm sequence using your car's factory buttons (steering wheel, door panels, or dashboard). Without the correct code, the engine simply will not start.
- Service & Maintenance Mode: Handing your keys over for a service or car wash? Activate the secure Valet Mode to temporarily disable the immobiliser without revealing your private PIN.
- Digital CAN Bus Integration: Unlike old-school immobilisers that involve cutting wires, the Nitro communicates directly with the vehicle's ECU for a cleaner, safer, and more reliable installation.
- Expert North West Installation: Professionally fitted by our 30-year veteran technicians in St Helens, serving Liverpool, Warrington, and the surrounding areas.
Thatcham Approved Catagory 2 immobilisers
LASERLINE 921K (THATCHAM CATEGORY 2)
The Laserline 921K is the industry-standard "workhorse" of vehicle security. For owners seeking a reliable, proven, and insurance-approved solution without the complexity of modern CAN bus systems, the 921K is the definitive choice. This Thatcham Category 2 system provides physical circuit interruption, ensuring your vehicle stays exactly where you left it.
- Thatcham Category 2 Approved: Fully certified and recognised by UK insurance companies to meet strict security standards, helping you secure your vehicle and potentially lower your premiums.
- Dual-Circuit Immobilisation: The 921K protects your vehicle by physically disabling two independent electrical circuits (typically the starter motor and fuel pump), making it impossible to start without authorisation.
- Encrypted Touch-Key Operation: Disarm the system effortlessly using the high-security, encrypted touch-keys. Simply touch the key to the dashboard-mounted receptacle to authorise the start.
- Automatic Self-Arming: Never worry about forgetting to secure your car. The system automatically arms itself 30 seconds after the ignition is switched off, providing constant protection.
- Covert, Professional Installation: Our technicians specialise in hidden installations, ensuring the control unit and wiring are integrated deep within the vehicle's harness, away from prying eyes.
- Visual Deterrent: A bright, flashing LED indicator warns potential thieves that the vehicle is protected by a professional Laserline security system.
- Proven Reliability: With decades of track record, the Laserline 921K is known for its legendary durability and "fit and forget" reliability.
LASERLINE 361 GUARDIAN (ADR TAG IMMOBILISER
The Laserline 361 Guardian is the elite choice for high-value vehicles and commercial vans where convenience and high-level security must go hand-in-hand. As the first and only Thatcham-approved ADR (Automatic Driver Recognition) immobiliser, the 361 Guardian provides a seamless "no tag, no start" defence that is completely passive and highly effective against modern theft methods.
- Thatcham Category 2 Approved: Fully accredited and insurance-recognised, ensuring your vehicle meets the highest security standards for peace of mind and potential premium savings.
- Automatic Driver Recognition (ADR): No more fumbling with touch-keys or PIN codes. The system includes two long-range encrypted tags; as long as a tag is in your pocket, the vehicle disarms automatically as you enter.
- Passive "No Tag, No Start" Security: If the system doesn't detect your unique ADR tag, the engine remains immobilised. This stops thieves even if they have stolen your original keys or cloned your key fob.
- Dual-Circuit Protection: The 361 Guardian physically interrupts two vital engine circuits (such as the starter motor and fuel system), providing a robust physical barrier to theft.
- Anti-Relay & Keyless Theft Defence: Specifically designed to combat relay attacks and key cloning, making it an essential upgrade for modern keyless entry vehicles.
- Automatic Arming: The system arms itself automatically 25 seconds after the ignition is switched off, ensuring your vehicle is never left unprotected.
- Professional, Covert Fitting: Installed by our veteran technicians in St Helens, the 361 Guardian is integrated deep into your vehicle's wiring for maximum security and a factory-standard finish
VIPER 106V (TRIPLE CIRCUIT SECURITY)
The Viper 106V is a legendary name in vehicle security, often referred to by experts as "the daddy" of standalone immobilisers. Known for its robust build and extreme reliability, the 106V provides a physical barrier against theft that has stood the test of time. While it is larger in size than the Laserline systems, this allows for a heavy-duty construction that is built to last.
- Triple-Circuit Immobilisation: The 106V offers an elite level of protection by physically interrupting three vital electrical circuits (typically the starter motor, ignition, and fuel system), making it nearly impossible to hotwire or start the vehicle without the correct touch-key.
- Legendary Reliability: While not currently Thatcham approved, the Viper 106V is widely regarded as one of the most reliable and consistent immobilisers on the market—a true "fit and forget" security solution.
- Encrypted Touch-Key Security: Disarm the system using encrypted touch-keys. Simply touch the key to the dashboard receptacle to authorize the engine start—no radio signals to be intercepted or cloned.
- Automatic Arming: Peace of mind is built-in; the system automatically arms itself 30 seconds after the ignition is switched off, ensuring your vehicle is never left vulnerable.
- Covert, High-Security Installation: Our technicians specialise in deep-harness installations, hiding the control module and wiring within the vehicle's factory looms for maximum security.
- Visual Deterrent: Features a bright, flashing Red LED indicator that warns potential thieves that the vehicle is protected by a professional Viper security system.
- Heavy-Duty Construction: Its larger physical footprint reflects its industrial-grade internal components, designed for long-term durability in any vehicle environment.