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What is a Smart Key Car Key? Differently referred to as proximity keys Key fobs, proximity keys, or remote keys, smart keys work to unlock doors and start engines without the driver needing to insert an actual key. They communicate by radiofrequency signals. This helps keep cars safe by not allowing hotwiring. Smart keys also broadcast unique encrypted signals that prevent them from being used by other vehicles driven by drivers. Convenience Instead of having to insert keys into an ignition slot to lock and unlock your vehicle by simply touching the door handle or trunk. Modern cars often come with a feature that allows you to start your car via the internet. This is particularly useful if you are bringing in groceries, or transporting passengers or equipment. This technology is designed to to prevent theft of vehicles. Smart keys send out encrypted signals instead of a single frequency, as a regular keyfob does. What does this mean? Stuff Works Electronics explains that it is impossible for other cars to receive and responding to the same signal. Additionally, some companies incorporate a computer chip into the car to detect the unique fingerprint of each key, which helps ensure that only authorized drivers are using it. This is useful should you lend your vehicle to friends and family members. Certain smart keys can also store user settings, ensuring that the steering wheel, seat mirror, seat, and stereo presets are automatically set when the key is within the range of the vehicle. Some smart keys can be programmed to stop the vehicle from crossing a certain speed limit when you start the car with that key. This is a great method to protect new drivers, and it's also a good idea when you have children in the back of the vehicle. Security Traditionally, car keys have been made from metal and used to unlock the ignition. Smart key technology eliminates this requirement. Smart keys are equipped with an electronic chip that transmits the signal to the car's antenna. This signal is then detected by the vehicle when the driver presses on the handle of the door or trunk release. It is now impossible to lock the keys in your vehicle. The signal that the smart key transmits to your car is encrypted, which means only the owner has the right to use it. The majority of models will also turn off the engine when the vehicle hasn't been started in some time. This feature is particularly useful if you are in a hazardous location or you need to leave your vehicle for any reason. Additionally, if the smart key battery runs out during a journey, many systems come with a backup plan to open and start the vehicle. The backup method involves putting the key in a slot or holding it near a particular location in the cockpit, where the energy is transferred to an electric motor. Certain manufacturers also include an emergency mechanical key blade inside the key that can be used to open the trunk and start the car if needed. Battery Life The majority of newer cars have keyless entry systems and push-button starters. These are controlled by a smart device that communicates with the car using proximity technology. These systems utilize a tiny transmitter powered by a coin-sized lithium battery. Like any other battery that will eventually require replacement. Most smart key fob batteries last for a while, but that doesn't mean they'll never fail to power up and stop functioning quickly. A dead fob means it isn't able to unlock or start the car even if you keep it close to the front door. The key fob light flashes. It is not uncommon to see the transmitter of a smart key to drain the battery. It transmits a signal to the car every time you press one button, however most times the smart key isn't doing anything. A single signal to lock or unlock takes only a fraction of the battery power of the fob, so there is easily several years worth of signals worth of battery life for the average smart key battery. The fob can also drain the battery when it is placed near other devices that emit electromagnetic field like computers and phones. These devices emit magnetic fields of their own which can interfere with and slow down the fob transmitter. RepairPal reports that the fob may not function if it's placed too close to the gadgets. Maintenance As opposed to the traditional car key, a smart key uses technology to manage the locks on your vehicle as well as perform other functions. It works by transmitting signals from the fob to antennas located inside and outside the vehicle. These antennas receive the signal and communicate with your car's computer. The car interprets the signal, and allows you to begin or open it without a physical key. New vehicles are loaded with high-tech electronic features and the fob is now the hub for many of these functions. The most obvious ones are locking and unlocking, remote starter, and chirping sounds that aid in finding your car in a parking spot. Certain fobs let you store various settings for different drivers, and can even remotely open windows as well as the sunroof. The transmitter is a complicated device that has an integrated circuit board and it could be damaged through repeated use or exposure to cold or heat. The transmitter can be broken when it is knocked or dropped and the contacts on the battery can become bent. smart car key replacement cost uk can be hard to diagnose and resolve. You can utilize your smartphone to get around this issue to see if it works. However, you should always keep an extra key in your pocket in a case. You can purchase an equivalent replacement for the majority of OEM smart keys that cost up 70 percent less and comes with a 3-year, better-than-OEM warranty.