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What is a Smart Key Car Key? Differently referred to as proximity keys also known as key fobs, keys or remote keys, smart keys are used to unlock doors and start engines without the driver needing to insert the physical key. They communicate via radiofrequency signals. Apart from that, it helps keep cars secure by stopping hotwiring attempts. Smart keys broadcast unique encrypted signals that block them from being used by other vehicles. Convenience Instead of putting keys into an ignition slot it is possible to lock and unlock your vehicle by simply touching the handle on the door or trunk. A lot of modern cars also have the option to start your engine remotely. This is especially useful if you are bringing groceries in or transporting passengers, or equipment. This technology is designed to stop theft of vehicles. Instead of sending a single frequency signal, like a traditional key fob does smart keys send out an array of encrypted signals to a car's embedded antennas as you walk towards it. This prevents other cars from receiving and responding to the same signal. which explains how Stuff Works Electronics. Certain manufacturers also incorporate a computer-chip in the vehicle which recognizes the unique fingerprint of every key. This makes sure that only authorized users use it. This is helpful in the event that you lend your vehicle to family members or friends. Some smart keys also store user settings, so that the steering wheel, seat mirror, seat, and stereo presets are automatically set when the key is in range of the car. For added convenience, some smart keys can be programmed to stop the car from exceeding a particular speed limit when started with that particular key. This is a great method to ensure the safety of new drivers and it's recommended when you have children in the back. Security Traditionally keys for cars have been made from metal and used to unlock the ignition. Smart keys eliminate this requirement. Smart keys have a specific chip that sends an antenna signal to your car. The car detects this signal when the driver presses the button on the trunk release or door handle. It is now impossible to lock the keys inside 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. A majority of models also shut down the engine when the vehicle hasn't been running for just a few minutes. This feature is particularly useful if you're in an unsafe area or have to leave the vehicle for any reason, for instance, at a gas station. A lot of systems also have backup systems for opening and starting the car in case the battery of the smart key goes out while on a ride. The backup method is to insert the key into a slot or holding it near a particular area in the cockpit which transfers energy to an electric motor. Certain manufacturers offer a mechanical key blade that can be used in an emergency to open the trunk or start the vehicle. Battery Life The majority of newer cars have keyless entry systems as well as push-button starters. They are controlled by a smart key fob that communicates with the car through proximity technology. These systems utilize a tiny transmitter, powered by a lithium coin-sized battery. It will eventually need to be replaced like any other battery. Even though smart key fobs are designed to last for years, they can suddenly lose power. If the fob is dead, you won't be able to unlock or start your car holding it close to the front door. It is not unusual for the transmitter of a smart key drain the battery. The smart key will send the signal each when you press a button. However, most of the times, it doesn't do anything. The battery of a smart key is enough to last for several years of locking and unlocking signals. smart car keys replacement www.g28carkeys.co.uk is also prone to drain the battery when you keep it close to other devices that emit electromagnetic fields, such as phones and computers. These gadgets emit magnetic fields of their own, which can interfere and slow down the fob's transmitter. In some instances, the fob may even stop working altogether if the fob is left too close to these devices, as per RepairPal. Maintenance Smart keys are different from traditional keys in that they use technology to control the locks on your vehicle, as well as perform other functions. It works by transmitting an indication from the fob to antennas in and outside the vehicle. These antennas sense the signal and communicate with the computer in your car. The car interprets the signal and allows you to open or begin it without using a physical key. The fob is now a central point for many electronic features in new automobiles. The most obvious functions include locking and unlocking your car, remote starting and chirping sound to help you locate your car in a parking space. Certain fobs let you save various settings for different drivers, and can even remote-operated windows and the sunroof. The fob is an intricate electronic device that has an integrated board that can be damaged if it is used too hard or exposed to extreme cold or heat. The transmitter could be damaged in the event of it being knocked or dropped, and the battery contacts can also become bent. These problems can be difficult to identify and resolve. You can try using your smartphone to get around the issue and see if it works, but it's always a good idea to keep a backup key in your pocket just in case. You can buy an ordinary smart key replacement for up to 70% less than OEM keys and comes with a 3-year warranty.