Keyless car theft might sound impossible, but it’s a real risk for those with modern cars.

Also known as Relay Theft or Relay Crime, this theft happens when thieves use signal amplifiers or relay devices to trick the car into thinking the key fob is nearby, allowing them to unlock and start the vehicle without the actual key.

Learn how thieves exploit these systems and how to enhance your security with the tips below. 

Key takeaways

1. How keyless car theft works
2. How to prevent keyless car theft
3. Cars with a poor keyless car theft security rating
4. Where should you keep your car keys at night?
5. Do car manufacturers do anything to prevent keyless car theft?
6. Does car insurance cover keyless car theft?

How keyless car theft works

Keyless car theft only takes 20 to 30 seconds. A scary thought for all drivers.

Keyless or relay car theft happens when thieves use a device to capture the signal from your key fob, even if it’s inside your house. 

The signal is then relayed to someone near your car, fooling it into thinking the key is nearby, unlocking and starting the vehicle. Thieves often use signal boosters, relay boxes, or code grabbers to open cars. 

This method is quick, quiet, and doesn't require physically breaking in, which is why it's become so popular.

How to prevent keyless car theft

You can prevent theft by boosting your keyless car security and keeping your keys safe. 

Here are some of the best ways to protect your vehicle:

1. Faraday pouches & boxes

When you're not using your key fob, store it in a Faraday pouch or box, also known as signal-blocking pouches. 

These pouches block the signal so thieves can't boost keys and trick your car into unlocking or starting. They’re lined with metallic materials, making this possible. 

Pouches tend to cost from £5 to £10. Very simple, but really effective.

2. Car alarms & steering wheel locks

Installing a steering wheel lock and car alarm adds visible security, making your car a harder target for thieves, reducing the risk of damage and saving you from costly repairs.

In the unfortunate case of damage, you can use car repair finance to split the costs and strain on your wallet. 

3. Turn off your keyless fob’s signal

Some keyless fobs let you manually turn off the wireless signal. Check your car’s manual to see if that’s an option.

If it’s not mentioned, it’s worth contacting the manufacturer to find out, as this is an effective preventative measure.

4. Get your windows etched

Want to make sure your vehicle is visibly yours? 

Etching the last seven digits of your VIN or registration onto windows, headlights, and mirrors makes it much harder for thieves to change your car’s identity after a keyless theft.

5. Park in a garage overnight

Parking your car in a garage overnight is ideal to prevent keyless theft by increasing the distance from signal-boosting thieves.

But garages aren’t an option for everyone. 

If this is the case, park close to your home, use outdoor lighting or CCTV, and choose well-lit streets as these deter thieves.

6. Keep your car clear and tidy

Cleaning the car isn’t anyone’s favourite task. 

However, a clean, organised car with no valuables like phones or sat navs is less likely to be stolen. You may even want to leave your glove box open to show there’s nothing to hide.

7. Use a tracking device

Many drivers use a tracking device that can help locate the car if it’s stolen. 

It’s a worst-case scenario measure, but it gives you a better chance of getting it back if thieves do succeed.

8. Keep your key fob away from windows

If you have a keyless entry car, try to keep your keys far from doors and windows, as this can grant thieves a better signal. 

Don’t forget to do the same with any spare set!

9. Report lost keys

As soon as you notice your car keys are missing, contact an auto locksmith. 

These are experts who deal with vehicle locks and can remove stolen keys from your vehicle’s database to prevent their use.

Cars with a poor keyless car theft security rating

Any car with keyless entry is at risk of keyless car theft. 

However, the General German Automobile Club (ADAC) tested 237 keyless cars and found some are more at risk than others. 

These include:

• Ford Mondeo
• Hyundai Nexo
• Kia ProCeed
• Lexus UX
• Mazda 3
• DS3 Crossback
• Toyota Corolla
• Toyota RAV-4

Where should you keep your car keys at night?

The safest place to keep car keys at home overnight is anywhere away from doors and windows. You may also want to use a signal-blocking pouch to keep your keys extra secure.

Storing your car key fob in a metallic tin may help prevent keyless car theft by blocking the signal. However,  it's a good idea to test it first to ensure the signal is effectively blocked first.

Do car manufacturers do anything to prevent keyless car theft?

Many car manufacturers are now offering keyless entry protection, such as motion sensor fobs and Faraday bags, but not all of them cover this possibility yet.

For example, Kia offers a Faraday bag to block signals, while Ford Focus, Fiesta, BMW, Audi, and Mercedes have motion sensor key fobs that go into sleep mode after 40 seconds of inactivity to block thieves from accessing the car’s signal.

Does car insurance cover keyless car theft?

Most insurance policies cover keyless theft, but they may require proof that you still have all available keys. It’s worth checking with your insurer to see whether your policy covers this.

Final Thoughts

Keyless car theft is an unfortunate possibility for modern drivers. However, with a few simple steps you can reduce the chances and keep your car safer than ever while it’s parked. 

Split the cost with Bumper 

Keyless car theft can leave you with huge costs—just like last-minute repairs!

With Bumper's car repair finance, you can split the cost of repairs into monthly payments at no extra cost. 

Apply online for up to £5,000 and choose from 1,000s of trusted repairers.