Here are 10 essential things you should know about keyless (push‑button start) cars from recent reports:
1. How Keyless Entry Works (and What Is RFID?)
Keyless systems rely on Radio Frequency Identification (RFID). The key fob emits a coded signal, which your car’s receiver recognizes when the fob is nearby. Once validated, your car unlocks and allows ignition at the push of a button
2. Rolling Codes & Encryption Keep Smart
To prevent signal spying, most keyless systems now use rolling codes—changing each time it’s used—and strong encryption, making simple replay attacks much harder
3. Relay Theft: How Cars Are Stolen in Minutes
Thieves use relay devices to amplify your fob’s signal—even if safely inside your home—to trick your car into thinking the key is nearby. Models from Hyundai, Kia, Tesla, Chevrolet, Ford, and Toyota are all reported as vulnerable
4. The “CAN‑Injection” Canary in the Coal Mine
Cybersecurity researchers have uncovered relay-style “CAN‑injection” attacks and rolling-code exploits like RollJam and RollBack, which can bypass modern protections—even long after the original signal was used
5. Safety Hazards: Forgetting to Turn the Car Off
Because keyless cars are quiet with no key to remove, owners can accidentally leave vehicles running, dangerously allowing carbon monoxide to build up—linked to dozens of deaths
6. Key Fob Design Matters
Some basic fobs continuously emit the unlock signal, while newer fobs include motion sensors that shut down transmission when still. Motion-sensitive fobs help reduce attack vulnerability
7. Immobilisers Still Crucial
Cars without engine immobilisers—especially many pre‑2022 Hyundai and Kia models—can be stolen even when locked. Immobilisers are a key security layer alongside keyless tech
8. Regulators & Laws Are Catching Up
In the UK, new laws may ban unauthorized devices used for keyless theft. Meanwhile, automakers like Hyundai are under legal pressure to disclose vulnerabilities and issue software or hardware fixes
9. Convenience Features Can Aid Safety
Keyless systems enhance accessibility for many, like drivers with limited mobility, and reduce key-lock-ins. They include features like auto-locking, immobilizer checks, and engine shut‑off safeguards
10. Smart Defenses for Smart Cars
To protect your keyless car:
- Use a Faraday pouch to block fob signals at home
- Add steering wheel locks or immobilisers
- Park in secure, well-lit areas, ideally garages
- Enable in-vehicle security features (e.g., Tesla’s PIN-to-drive)
- Stay informed on software updates and recall alerts
Final Takeaway
Keyless cars offer sleek convenience and user-friendly access—but come with risks like relay theft, carbon monoxide hazards, and complex cybersecurity threats. By combining tech awareness, good habits, and safety accessories, you can enjoy the benefits while staying protected on the road.
