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6 September 2024 Keyless entry system in cars: how it works and what it does
Did you know that keyless entry systems have been around since the early 1980s? Car manufacturers started experimenting with remote keyless entry systems as a more convenient alternative to traditional keys. Over time, keyless entry systems have evolved to include features such as push-button ignition, hands-free access, and smartphone integration. This has provided drivers with greater convenience, security, and functionality than ever before. Let's take a closer look at this innovative device.
How does keyless entry work?
Keyless entry systems use a combination of radio frequency (RF) communication and proximity sensors to provide convenient access to vehicles without the need for a physical key. When a driver approaches the vehicle with the key fob in hand, the key fob emits a low-power RF signal containing a unique digital code.
The vehicle's onboard receiver detects this signal when it comes within a certain range, typically a few feet to several metres, and verifies the code's authenticity. If the code matches one stored in the vehicle's memory, the doors are automatically unlocked, allowing the driver to enter the vehicle without having to physically unlock it with a key.
Many keyless systems also include a push-button ignition function, allowing the driver to start the engine with the press of a button rather than inserting a traditional key into the ignition switch. This increases convenience and security for the driver, while also providing advanced anti-theft features and provides protection against unauthorised access and vehicle theft.
Central locking systems
Keyless entry and car central locking systems are closely related and often integrated into contemporary vehicles, but they serve slightly different purposes. Keyless entry systems allow doors to be remotely locked and unlocked using wireless communication between a key fob and the vehicle.
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Central locking systems, on the other hand, are designed to lock and unlock all the vehicle's doors simultaneously from a single control point, usually the driver's door. This can be achieved using a physical key, a key fob or interior car door switches. Central locking systems ensure that all doors are securely locked or unlocked at the same time, providing you and your passengers comfort and safety.
While keyless entry systems often include central locking as part of their functionality, central locking systems can also operate independently of keyless technology. Both systems add to the convenience, security and functionality of modern vehicles.
Additional security features
An immobiliser is a security feature that is commonly found in modern vehicles. Its primary function is to prevent unauthorised access and theft of the vehicle. This is achieved by disabling the engine's ignition system electronically, which makes it impossible to start the vehicle without the correct electronic key or transponder signal.
When you use it in combination with keyless entry and central locking systems, the immobiliser adds an extra layer of security. This ensures that even if a thief does gain access to the vehicle, they cannot start the engine without the authorised key or fob. This technology gives drivers the peace of mind that their vehicle is protected against theft, even in the event of a security breach or attempted break-in. See What is an immobiliser? for further information.
Keyless entry systems, immobilisers, and central locking systems are integral components of modern vehicle security, working together to provide comprehensive protection against theft and unauthorised access. Together, these technologies create a robust security ecosystem that deters theft and unauthorised use while providing you with the reassurance that your vehicles are safeguarded against potential threats.
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