Prevent Keyless Car Theft – 8 Quick Prevention Tips & What Relay Theft Is

Car security has never been more important. In recent years, the number of vehicle thefts has been climbing steadily, with thousands of motorists waking up to the shock of finding thKeyless entry has made driving more convenient, but it has also opened the door to new forms of car theft. In recent years, criminals have exploited weaknesses in wireless technology to steal vehicles in a matter of seconds. This type of crime, often called keyless car theft or relay theft, is on the rise across the UK.

In this guide, we explain what relay theft is, how it works, which car models are most at risk, and the practical steps you can take to protect your vehicle.

What is Keyless Car Theft?

Keyless car theft, also known as relay theft or relay crime, is when thieves use electronic devices to intercept the wireless signal from a car’s key fob. The criminals then relay this signal to the vehicle, tricking it into unlocking and starting as if the real key were present.

This type of theft does not involve breaking locks, smashing windows, or forcing entry. Instead, it relies entirely on capturing and transmitting the signal from your keyless entry system.

Keyless Car Theft – How It Works

Keyless theft usually happens in two simple steps:

Step 1 – Capturing the signal
One thief stands near the house or location where the car keys are kept. Using a signal amplifier, they capture the wireless code being sent out by the fob.

Step 2 – Fooling the car into thinking the key is nearby
Another thief stands next to the target vehicle with a receiver. The captured signal is transmitted to the car, which believes the key is within range. This allows the thieves to unlock the doors and even start the engine.

How Long Does Keyless Car Theft Take to Happen?

One of the most worrying aspects of relay theft is how quickly it can happen. In many cases, criminals can complete the theft in as little as 20 to 30 seconds. Once the engine is running, the car can be driven away with ease, often before the owner even realises something is wrong.

What Device is Used in Keyless Car Theft?

Specialist electronic relay devices are used to commit this type of crime. These devices are designed to intercept and amplify the short-range wireless communication between the car and the key fob. They can be bought illegally and are small enough to carry discreetly.

Is My Car Keyless Entry?

Not every vehicle is at risk of relay theft. To know if your car is vulnerable, you need to understand how keyless entry works.

Cars with keyless entry allow you to unlock and start the vehicle while keeping the fob in your pocket or bag. Once inside, you can start the engine with the push of a button. If you need to press a button on the fob itself to unlock the car, your vehicle is not at risk of this type of theft.

Prevent Keyless Car Theft (Quick Tips)

Protecting your car from keyless entry theft involves combining technology, good habits, and additional security measures. Here are eight practical steps:

1. Use a Signal Blocking Pouch (Faraday Bag)

Keep your car keys in a Faraday pouch, screened box, or metal container to prevent the signal being captured. Always store spare keys in the same way and keep them away from doors and windows.

2. Turn off Keyless Fob’s Wireless Signal

Some key fobs allow you to disable the wireless function. Check your car’s manual or speak to the manufacturer to see if this option is available.

3. Use a Steering Wheel Lock or Car Alarm

Mechanical security devices, such as steering wheel locks, provide a visible deterrent. A professionally fitted alarm or immobiliser can also make theft more difficult and may reduce your insurance premium.

4. Park in a Garage at Night or Park Defensively

If you have a garage, use it. If not, try to park as close to your property as possible or in well-lit areas. Defensive parking makes it harder for thieves to access or drive away the vehicle.

5. Get Your Windows VIN Etched

Etching your Vehicle Identification Number onto the windows and mirrors makes it harder for thieves to sell on the car or disguise its identity.

6. Keep Your Vehicle Tidy and Hide Valuables

Avoid leaving items such as phones, sat navs, or bags inside the vehicle. Visible valuables can attract thieves, and even signs like suction cup marks on the windscreen should be cleaned away.

7. Prevent Lost Car Keys Being Used

If you lose your car keys, contact a professional auto locksmith to reprogramme your vehicle so that only the remaining keys can operate it.

8. Re-programme Your Keys When Buying Second-Hand Cars

If you purchase a used vehicle, have the keys reprogrammed to ensure no old sets are still linked to the system. This prevents previous owners or others from accessing the car.

Car Models at Threat to Keyless Car Theft

Any vehicle with a keyless entry system can be a target. Popular models frequently identified as vulnerable include the Ford Fiesta, Ford Focus, Volkswagen Golf, Nissan Qashqai, and other high-demand vehicles.

Relay theft is not limited to luxury cars. Both everyday family vehicles and premium models are at risk, making prevention important for all drivers.

Keyless Car Theft – Frequently Asked Questions

Does putting car keys in a tin block the signal?
A metal tin may block the signal from your fob, but results can vary. The most reliable method is to use a signal blocking pouch designed for this purpose.

Where should I keep my car keys at night?
Keep your keys in a Faraday pouch and away from doors and windows. This reduces the chance of thieves intercepting the signal from outside.

Will my car insurance cover keyless car theft?
Most policies do cover theft through relay attacks, but insurers may require proof that you still hold all issued keys. Always check your policy details.

Are car manufacturers doing anything to prevent keyless car theft?
Yes. Some manufacturers are introducing motion sensor key fobs that switch to sleep mode after a short period of inactivity, cutting the risk of signal relay. Others provide protective pouches with new vehicles.

Are vans also at threat to keyless theft?
Yes. Vans such as Ford Transits have been heavily targeted in recent years. Owners of commercial vehicles should take the same security precautions.

What is the future of relay theft?
While manufacturers are making progress with new technology, criminals continue to adapt. For now, the safest approach is to use a combination of physical deterrents and signal blocking measures.

Final Thoughts

Keyless car theft is a fast, sophisticated crime, but it is not unstoppable. By understanding how relay theft works and following simple prevention steps, you can significantly reduce the risk of your vehicle being targeted. From using Faraday pouches and steering wheel locks to parking securely and reprogramming keys, small actions can make a big difference.

Taking these precautions not only protects your car but also gives you peace of mind.