What Is a Ghost Immobiliser?
A Ghost Immobiliser is a CAN-bus vehicle security system that sits invisibly inside your car’s electronics, with no LEDs, key fobs, or radio signals to detect. Instead of a traditional key or fob, you arm and disarm it using a personal PIN entered through your existing steering wheel or dashboard buttons, or automatically via Bluetooth using the companion smartphone app. Because it’s undetectable and can’t be scanned, cloned, or bypassed, it protects specifically against keyless entry theft, key cloning and CAN-bus attacks — common methods used to steal modern cars in the UK today.
The Ghost Immobiliser II by Autowatch is one of the most sophisticated vehicle security systems available on the UK market today. Developed in direct response to the rise of modern car theft techniques, it goes far beyond what any factory-fitted security system is designed to do, protecting your vehicle against key cloning, relay theft, key theft, and CAN bus hacking in a way that is completely invisible to those who shouldn’t know it’s there.
At its core, the Ghost works by requiring a unique PIN sequence to be entered before your vehicle will start. This sequence is known only to you, stored nowhere digitally, and leaves no footprint for thieves to follow. Unlike traditional immobilisers that can be bypassed with specialist tools or defeated by intercepting a signal, the Ghost has nothing to intercept. It produces no radio frequency output, carries no LED indicators, and leaves no trace on your vehicle’s exterior or interior. To anyone without the code, the car simply will not start, full stop.
The system is fully integrated into your vehicle’s existing electronics via the CAN bus network, meaning there is no additional hardware bolted on and no modifications that could flag to a thief that a security device is present. It is, in every practical sense, hidden in plain sight.
For day-to-day use, the Ghost is designed to be as unobtrusive as possible. The optional Autowatch Ghost TAG pairs seamlessly with the system, allowing the immobiliser to disarm automatically when the TAG is within range. Keep it on your keyring, in your wallet, or about your person and your car starts just as it always has, with no extra steps required. If you ever leave home without the TAG, your personal PIN sequence is always available as a backup, so you are never left stranded.
Each TAG is available at £59.99 and additional TAGs can be purchased for other drivers or as a spare. The peace of mind that comes with knowing your vehicle is protected around the clock, with no subscriptions and no ongoing costs, makes the Ghost Immobiliser II one of the most cost-effective long-term security investments available to UK drivers today.
How the Ghost Immobiliser Works
The Ghost Immobiliser adds a powerful second line of defence by requiring a unique PIN sequence to be entered through your vehicle’s existing steering wheel buttons or dashboard controls before the engine will start. There are no aftermarket keypads, no visible additions to your interior, and no giveaways for a thief to work with. The sequence is entirely your own, built from the buttons already on your car, and can be updated whenever you choose.
Because the system integrates directly with your vehicle’s CAN bus network, it works at a fundamental level that standard diagnostics simply cannot reach. A thief could have your key, your fob, and all the cloning equipment in the world, and the car still would not move. The Ghost doesn’t block a signal or scramble a frequency; it just waits, quietly, for the correct sequence.
For everyday convenience, the system pairs with a Bluetooth smartphone app. When your phone is detected nearby, the Ghost disarms automatically, so on most mornings you won’t need to think about it at all. Prefer a physical alternative to your phone? The optional Autowatch Ghost TAG works in exactly the same way, simply keep it on your person and the car starts as normal. If neither is available, your PIN sequence is always there as a fallback.
Should you ever change vehicles, the Ghost can be professionally removed and refitted to your new car, making it a long-term investment rather than a one-off purchase. There are no subscriptions, no ongoing fees, and no dependency on a third-party network. Once it’s in, it works.
- Installed in approximately two hours
- Fitted at a location to suit you, including home or workplace
- No wires cut during installation
- Simple four-button PIN sequence
- Fully customisable code, changeable at any time
- Bluetooth smartphone app included
- Install and forget daily operation
- Dedicated phone support
- Suitable for keyless entry vehicles
- May qualify you for a reduction on your car insurance premium
- Installed by TASSA approved engineers
- Transferable to another vehicle
- No ongoing subscription costs
Additional Ghost TAGs are available at £59.99 each.
Car theft in the UK has evolved. Today’s thieves don’t smash windows or hotwire engines; they exploit the very technology built into modern vehicles. Relay devices amplify your key fob signal from inside your home, ghost it to a waiting accomplice outside, and your car is gone in seconds. No force, no noise, no trace.
The Ghost Immobiliser was built specifically to counter this. Where factory security ends, the Ghost begins, sitting silently within your vehicle’s existing electronics and adding a layer of protection that thieves have no framework to defeat. There’s nothing to scan, nothing to clone, and no signal to intercept. It doesn’t announce itself, because it doesn’t need to.
What makes the Ghost particularly well-suited to modern driving is how little it asks of you. Once you’re familiar with your sequence, disarming it becomes second nature, no different to putting on your seat belt. For those who’d rather not think about it at all, pairing via the app or TAG means the car simply starts, every time, without any extra steps.
It’s also worth considering the longer-term value. A Ghost Immobiliser stays with you rather than the vehicle, transferable when you change cars, removable without permanent modification, and increasingly regarded by insurers as a meaningful security upgrade for high-risk or high-value vehicles. For many drivers, the peace of mind alone is worth far more than the one-off cost.
Whether you drive a keyless entry SUV, a high-performance saloon, or a workhorse van, the Ghost provides a level of protection that factory security was never designed to offer. It won’t make your car impossible to tow, but it ensures that wherever it ends up, it isn’t going anywhere under its own power.
Ghost Immobiliser Buying Guide: Everything to Check Before You Buy
What exactly is a Ghost Immobiliser?
The Autowatch Ghost 2 isn’t an alarm and it isn’t a tracker — it’s a CAN-bus immobiliser that sits invisibly inside your vehicle’s electronics. There are no LEDs, no key fobs, and no radio signal for a thief to detect, jam, or clone. You arm and disarm it with your own PIN sequence, entered through buttons you already have (steering wheel, indicator stalk, or dashboard).
How it stops modern theft methods
Most vehicle theft today doesn’t involve smashing a window — it’s relay attacks (amplifying your key’s signal from outside your home), key cloning, and OBD (“plug-in”) reprogramming using the diagnostic port. A Ghost Immobiliser defeats all three because:
- It has no signal to relay or clone.
- It doesn’t respond to OBD diagnostic tools, so plug-in reprogramming devices can’t find it.
- The engine simply won’t start without your PIN, regardless of whether a thief has a working key.
Is a Ghost Immobiliser better than a steering lock or standard alarm?
Short answer: for modern keyless and CAN-bus vehicles, yes — see the full comparison below. A steering lock is a visible deterrent that can be cut or removed with tools; a standard alarm can be silenced or simply ignored by a thief with a cloned key. A Ghost Immobiliser is undetectable and stops the car being driven at all, even if every other security layer has already been beaten.
Is it right for your car?
The Ghost 2 works with the vast majority of petrol, diesel, hybrid, and EV models with a CAN-bus network — including keyless entry vehicles, which are the models most exposed to relay theft. If you’re unsure about your specific make/model, call the team on 0800 246 1482 before booking.
What’s included in the £499 price
- Ghost 2 unit and professional TASSA-approved installation (nationwide, at your home or workplace)
- 2-year manufacturer warranty on the unit and the fit
- Emergency scratch-off PIN for backup access
- Optional: driver fob (+£45), dual fob (+£90), or additional Ghost TAGs (+£59.99 each)
- 4 interest-free payments available via PaymentAssist
Will it affect my insurance?
The Ghost 2 is TASSA-approved and recognised by many UK insurers as a Thatcham-category-equivalent security upgrade, which can help with premiums on high-theft-risk models. Always confirm with your own insurer, since requirements vary.
Installation, in brief
A typical fit takes around 2 hours and is done at your home or workplace by a TASSA-registered mobile engineer — no need to visit a garage.
Ghost Immobiliser vs Other Security Options
|
Ghost 2 Immobiliser |
Steering Wheel Lock |
Standard Car Alarm |
GPS Tracker Only |
| How it works |
Invisible CAN-bus immobiliser, PIN-armed |
Physical, visible mechanical lock |
Sounds alert on forced entry |
Locates car after theft |
| Stops relay/key-cloning theft |
Yes |
Partial deterrent only |
No |
No (recovery only) |
| Detectable by thieves/scanners |
Undetectable |
N/A (visible) |
Often ignored/silenced |
Can be jammed |
| Prevents engine start |
Yes |
Only if fitted at time of theft |
No |
No |
| Insurance-recognised |
TASSA-approved |
Rarely |
Sometimes |
Often (with immobiliser) |
| Typical cost (fitted) |
£499 |
£30–£80 |
£150–£300 |
£200–£400 + subscription |
| Best for |
Keyless/CAN-bus vehicles, relay-theft risk |
Budget, low-tech deterrent |
Alerting to break-ins |
Recovering a stolen vehicle |
Many customers combine a Ghost Immobiliser with a GPS tracker for prevention and recovery.
