Prevent Keyless Car Theft (8 Quick Tips) & What Relay Theft is (2024)

Prevent Keyless Car Theft (8 Quick Tips) & What Relay Theft is (1)

Find out what Keyless car theft is & how to prevent your keyless entry car being stolen. Learn if your car is keyless entry & what car models are at risk as keyless car theft (relay theft) is a crime on the rise.


Keyless Car Theft FAQ’s

What is Keyless Car Theft?

Keyless car theft (aka Relay Theft/Relay Crime) is where the signal from a key for a so-called “Keyless entry” car is captured by somebody standing outside the victim’s house using a device.

Keyless Car Theft – How It Works

Step 1 – The device transmits the signal to somebody else standing by the victim’s car.

Step 2– This then fools the car into thinking the key is near it, and so it allows the doors to be opened and ignition to be started.

“Keyless car theft can take only 20-30 seconds”

How far do thieves need to be away from my car keys?

Keyless Car Theft happens when thieves are only within a few metres from your car keys to capture the signal. We will tell you how you can stop thieves capturing your car key signal shortly.

Prevent Keyless Car Theft (8 Quick Tips) & What Relay Theft is (2)

Cars with keyless entry are at risk to relay theft

How Long Does Keyless Car Theft Take to Happen?

Keyless car theft can take only 20-30 seconds.

What device is used in Keyless Car Theft?

Relay crime is when a certain type of specialist electronic equipment captures the signal from the Key and transmits it to a receiver that somebody standing next to the car has.

Is My Car Keyless Entry?

If you have to push a button on your car keys to enter your car, you are not at risk of being “hacked”.

Only cars with a keyless entry system can be stolen using so called “relay” equipment.

Keyless entry cars allow the driver to unlock and start the car with the key fob still in their pocket. Once in the car, the driver can press a button to start the engine.

Full guide to what keyless entry is

Prevent Keyless Car Theft (Quick Tips)

To protect your keyless entry car from being a victim of relay theft, here some are some quick tips:

1. Use a Signal blocking pouch (Faraday Bag) – Keep your car keys safe

Car key burglaries are on the increase, why not keep your car keys in a safe!

If you have a ‘keyless entry’ car, then make sure your keys are kept well away from doors and windows.

Keep your car key in a screened box/tin/bag so that the signal can’t be ‘grabbed’ from the outside and used to open your car – and don’t forget to do the same with any spare set!

Fact: Signal Blocking pouches are also known as Faraday Bags or Pouches

Why Use a Signal Blocking Pouch (Faraday Bag)

Signal Blocking pouchescan stop access to your vehicle by blocking your car key fob from transmitting its code to the vehicle, as the pouches are lined with layers of metallic material.

“The pouch which has a metalic lining Image, which prevents signals from the remote key fob being intercepted by unwanted individuals”
John Mutch Locksmith

Putting your keys in a signal blocking pouch will stop any thieves from being able to amplify the signal used in relay theft.

How much do signal blocking pouches cost?

These pouches are cheap to purchase as well, from as low as £5, they can also be used to block WI-FI and Bluetooth signals on Mobile Phones.

Faraday/Signal Blocking Pouch Guide
Best Signal Blocking Pouches Guide

2. Turn off Keyless Fob’s Wireless Signal

Do you have a keyless fob? Wireless signals on some keyless fobs can be switched off.

To turn off your wireless signal, you should look in your car’s manual to see if you can do this.

If you can’t find anything in your manual about turning off your fob, you should contact the vehicle’s manufacturer.

Wikihow guide to turning off fob

3. Use a Steering Wheel Lock or Car Alarm to stop Keyless Car Theft

Another method to prevent keyless car theft is by fitting a steering wheel lock or car alarm.

Most modern car thieves are equipped with laptops rather than hand tools, so mechanical devices – such as steering wheel locks – can be a real deterrent.

Prevent Keyless Car Theft (8 Quick Tips) & What Relay Theft is (4)

A Steering Wheel Lock can prevent keyless car theft

When purchasing a security device, look out for 3rd party approval such as Sold Secure, whereby the product is tested against tools used by criminals such as Crowbars and Angle Grinders.

Find a approved steering wheel lock

An alarm can reduce your car insurance

If you haven’t got a factory-fitted alarm, you may be able to reduce the cost of your car insurance by fitting a car alarm.

Check with your insurer that the alarm is approved, as the quality can differ with car alarms.

And the single most cost-effective way to reduce your insurance premium is to fit an immobiliser, just make sure it’s professionally fitted.

Will a car alarm impact my insurance

4. Park in a Garage at Night to Prevent Keyless Car Theft

Park your car in a garage overnight is ideal to stop keyless car theft, this increases the distance between your car andpotential thieves trying intercept and amplify the signal from your car key fob.

Don’t have a garage or park on your driveaway? – If you’re parking on your driveway, park defensively, i.e. as close to your property as you can.

Extra Security to Prevent Keyless Car Theft

Consider upgrading our home security, by fitting outdoor motion detector lighting and CCTV cameras. If you park on the street, ensure it’s in an area that is well lit.

A local MLA master locksmith can undertake a home security check and advise on how to best to upgrade your outdoor security.

18 Home Security Tips
Outdoor Security Advice

5. Get your windows etched (Vin Etching)

Etching the last seven digits of your Vehicle Identity Number (or registration) onto the windows, headlights and mirrors means anybody tries to steal your vehicle by keyless car theft will have a tough job when trying to alter your vehicle’s identity .

Is Vin etching worth it?

6. Keep your vehicle tidy can prevent Car Keyless Car Theft

We’ve all heard it, but how many still don’t follow the advice.

Make sure to keep the inside of your vehicle clear of clutter, try and hide any electrical items such as Sat Navs & Mobile phones.

Try to keep your glove box empty, and why not leave your glove box open to show you’ve got nothing to hide.

Don’t forget to hide any signs of high-cost equipment as well, suchas the marks that Sat-Nav suction cups leave on your windscreen!

7. Prevent lost car keys being stolen

Prevent Keyless Car Theft (8 Quick Tips) & What Relay Theft is (5)

Should you havelost your car keys then we recommend contacting a local MLA auto locksmith, who are experts with vehicle locks and keys.

They will make sure that only the keys you have cannot be used by the thief, removing all others your vehicles database, this will stop any stolen keys being used.

Get car keys reprogramed
Best way to replace lost car keys

8. Re-programme your keys

If you buy a second-hand vehicle, there is a risk that you may not be given all the sets of car keys.

Prevent Keyless Car Theft (8 Quick Tips) & What Relay Theft is (6)

Reprogramming your car keys can stop thieves using stolen keys

If you’re unsure, get car keys reprogrammed so previous owners can’t access the vehicle.

Warning: Although be warned programming of some vehicles keys can be quite expensive, especially if you go direct to the manufacturers, make you hire an auto locksmithwho is usually cheaper

Car Models at threat to Keyless Car Theft

Any car with keyless entry is at a threat to relay crime.

Popular models found to such as a Ford Fiesta, Volkswagen Golf, Nissan Qashqai and Ford Focus are all at risk.

This was reported by the BBC in their Hundreds of popular cars ‘at risk of keyless theftarticle which included research analysed data on keyless – or “relay” attacks on cars.

View Keyless Cars Tested

A study was carried out by General German Automobile Club (ADAC), who tested 237 keyless cars and found 230 vehicles could all be unlocked and started using Relay Crime.

Keyless Entry Cars Tested Against Keyless Car Theft by Thatcham

In 2019 Thatcham launched a security rating for keyless entry car models and how they performed against relay theft, below are the results.

PASSED Vehicle Models of Keyless Car Theft Test

The following keyless entry car models PASSED Thatchams relay attack test and were given a superior security rating:

Keyless Entry Vehicle ModelPass Or Fail
Security Rating
Audi e-tron PassSuperior
BMW 1 Series / 7 Series / 8 SeriesPassSuperior
BMW X6 / X7PassSuperior
Ford PumaPassSuperior
Jaguar XEPassSuperior
Land Rover EvoquePassSuperior
Mercedes B-ClassPassSuperior
Porsche 911PassSuperior
Porsche MacanPassSuperior
Volkswagen PassatPassSuperior

FAILED Vehicle Models of Keyless Car Theft Test

The below keyless entry car models FAILED Thatchams relay attack test and were given a poor security rating:

Keyless Entry Vehicle ModelPass Or Fail
Security Rating
DS3 CrossbackFailPoor
Ford MondeoFailPoor
Kia ProCeedFailPoor
Lexus UXFailPoor
Hyundai NexoFailPoor
Mazda 3FailPoor
Toyota CorollaFailPoor
Toyota RAV-4FailPoor
Volvo V60FailPoor

Keyless Car Theft – Frequently Asked Questions

Does putting car keys in a tin block the signal?

Storing a car key fob in a metallic tinMAYprevent keyless car theft, keeping your car key fob in a metallic tin can potentially block the signal from the thieves trying to relay the signal from your car key fob.

If storing your car key fob in a metallic container, we recommend testing first to check if the signal is blocked.

The most secure method to block the signal is using a signal blocking pouch / faraday pouch to store your car key fob safely.

Where should I keep my car keys at night?

To prevent keyless car theft if you have a keyless entry car, we recommend storing your car key fob at night in a signal blocking pouch ( also known as a faraday pouch ) to stop your car key fob signal being received, also place your car keys far away from any doors and windows.

Will My Car Insurance Cover Keyless Car theft?

Withcar theft payouts at a record high in 2019rumour has it that relay crime is a cause behind this rise.

Most Car insurance policies will cover theft if your car is stolen because of keyless theft, but they may require proof that you still have all available keys (we recommend checking with your insurer).

Are Car Manufacturers doing anything to Prevent Keyless Car Theft?

Yes, some car manufacturers are introducing preventative measures to help prevent keyless cars from being stolen.

Kia are providing their own faraday bag that helps block the car signal.

Ford Focus, Fiesta, BMW, Audi & Mercedes have introduced Motion Sensor Key Fobs. A Motion sensor car fob will go into sleep mode after being inactive for 40 seconds, which prevents any criminals from getting the cars signal.

Are Vans also at threat to Keyless Theft?

Yes, in 2018 there was a increase in keyless van thefts. The most popular van model stolen were Ford Transits.

What is the future of Relay theft?

Our Managing Director Steffan George met with West Midlands Police and Crime Commissioner David Jamieson to meet with car manufacturers to call for more action to tackle vehicle thefts.

We recommend at the very least storing your car key fob in a faraday pouch, to prevent your car from being a victim of relay theft.

Have a Question about Keyless Car theft?

If you concered about keyless car theft, contact us below or speak to a MLA licensed car locksmith in your area.

Contact us about keyless car theft

Find nearest car locksmith for advice

Recommended Reading

  • Motorcycle Security Guide – If you own a motorcycle read our expert tips
Prevent Keyless Car Theft (8 Quick Tips) & What Relay Theft is (2024)

FAQs

Prevent Keyless Car Theft (8 Quick Tips) & What Relay Theft is? ›

Top tips on how to avoid vehicle theft and relay attacks

Block electronic key fob signals: A Faraday-style wallet, as pictured above is the best way to block out any electronic signals, but even your fridge can shield electronic car keys from relay attacks.

How to protect against relay car theft? ›

Top tips on how to avoid vehicle theft and relay attacks

Block electronic key fob signals: A Faraday-style wallet, as pictured above is the best way to block out any electronic signals, but even your fridge can shield electronic car keys from relay attacks.

How do I block keyless entry signal? ›

How to block car key signals
  1. Store your keys in a safe place, out of range of your car.
  2. Store your keys in an aluminium tin or signal blocking box when at home.
  3. Carry your key fob in a shielded wallet or Faraday pouch when out and about.
  4. Turn off your key fob's wireless signal, if applicable.
Nov 28, 2022

Do Faraday boxes work? ›

Are Faraday boxes 100% effective? Unfortunately, no. While they can block a significant amount of electromagnetic radiation, some signals may still be able to penetrate the box.

What device do thieves use to steal keyless cars? ›

But how do they get that signal? If the keys lack a signal-blocker shield (called an RFID blocker), thieves can use a transponder device, which you can pick up online on the cheap. That electronic device can capture the keyless entry code as it's sent from the fob to the car.

What is the box to prevent keyless car theft? ›

Our faraday box is used to prevent your keys from being cloned by criminals. Blocking the signal from your key inside the protection cage, ensuring the thief does not gain entry and steal your car.

What is the best protection against car theft? ›

Make your car harder to steal by adding a steering wheel lock, tire lock, or brake lock—or all three. You can also install a hidden kill switch to confuse anyone who tries to steal your car. They're likely to give up when the car won't turn on.

What can I use instead of a Faraday pouch? ›

Aluminum foil can be used to protect against electromagnetic fields. Shoplifters use this to their advantage by coating the inside of bags to prevent detection. The same principle applies into this Instructables about using aluminum foil, an envelope, and some tape.

Do Faraday pouches stop working? ›

Unfortunately, like most security measures, Faraday pouches are not 100% effective. Depending on the quality of your Faraday pouch, some of the signals may still be able to escape. As time goes on and the lining material of the pouch begins to wear, it may become less effective than before.

Do Faraday boxes work for car keys? ›

The faraday box provides a complete blocking signal for your vehicle key fob. This prevents thieves from picking up and relaying signals from your car keys, to shield against break-ins and keyless ignition theft.

Is aluminum foil as good as a Faraday bag? ›

Yes, you can use aluminum foil for a Faraday cage, especially for short wavelength RF.

Is a microwave a good Faraday box? ›

You're probably only going to see about 50% of the participants not receiving calls while the phone is in the microwave. This is because microwaves aren't perfect Faraday cages and they "leak".

What is relay theft? ›

Relay theft (also known as keyless theft) is a method of stealing cars by tricking their keyless entry systems. Relay theft requires specialist equipment and is usually carried out by organised criminal gangs. Some desirable makes and models of cars have made headlines after being targeted repeatedly.

Where should I keep my car keys at night? ›

By storing your car keys, fob or card in an aluminium tin (even grandma's old biscuit tins), or a special signal blocking box, the signal between the car and key is blocked. This means thieves can't intercept it and clone a new one. If you're out and about, then a Faraday pouch is your best friend.

What is RollJam device? ›

RollJam is a $30 device designed to exploit a design flaw in the protocol that determines how keys communicate with car and unlock the majority of car doors.

Is my car vulnerable to relay theft? ›

Is My Car Keyless Entry? If you have to push a button on your car keys to enter your car, you are not at risk of being “hacked”. Only cars with a keyless entry system can be stolen using so called “relay” equipment. Keyless entry cars allow the driver to unlock and start the car with the key fob still in their pocket.

What material will block key fob signal? ›

While tin foil does have some effect, it may only dampen the signal rather than blocking it fully, so a Faraday pouch or box is a better option than either tin foil or some of the more anecdotal solutions, such as keeping the fob in the microwave or fridge (which may result in a disaster for the fob's battery).

Can Tesla be stolen with relay? ›

A new relay attack has demonstrated that Tesla vehicles can be stolen with a quick hack, but thieves need to work in pairs and get as close as two inches from your phone or key card.

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