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What is a Smart Key Car Key? Smart keys are also known as proximity keys or key fobs. They function to unlock doors and to start engines without needing to insert physical key. They communicate with one another using radiofrequency signals. This helps to keep cars secure by preventing hotwiring. Smart keys transmit unique encrypted signals that block them from being used by other vehicles. Convenience You can lock and unlock your vehicle without inserting the key into the ignition slot. Simply press the door handle or trunk. A lot of modern cars have a feature which allows you to start your car 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. Smart keys send out encrypted signals instead of a single frequency, similar to a traditional keyfob. This prevents other cars from being able to receive and respond to the same signal, which explains how Stuff Works Electronics. In addition, some manufacturers utilize a computer chip within the vehicle that can recognize the unique fingerprint of each key, which makes sure that only authorized drivers use it. This is useful in the event that you lend your car to family and friends. Certain smart keys also store user settings so that mirrors, seat and steering wheel adjustments, as well as stereo presets can be set automatically when the key is within reach of the vehicle. Some smart keys can be programmed to stop the vehicle from going over the speed limit once you start the car with that key. smart car key replacement near me g28carkeys.co.uk will help keep new drivers safe and can be helpful if you have young children in the back of the vehicle. Security Traditionally keys for cars were cut out of metal and used to unlock the ignition. Smart key technology eliminates this requirement. Smart keys are equipped with a specific chip that sends the signal to the car's antenna. The signal is then received by the vehicle whenever the driver presses on the handle of the door or trunk release. This means that it's impossible to lock your keys into your car anymore. The signal sent by the smart key to your vehicle is encrypted to ensure that only you can access it. The majority of models will also turn off the engine if the car hasn't been started for several minutes. This feature is especially useful when you are in a hazardous location or you need to leave your vehicle for any reason. Additionally, if a smart key battery is depleted during a ride, many systems have a backup method to open and start the vehicle. The backup system involves inserting the key in a slot or holding it close to an area of the cockpit in which energy is transferred to an electric motor. Certain manufacturers offer a mechanical key blade that can be used in an emergency to open the trunk or to start the vehicle. Battery Life The majority of newer cars come with keyless entry and push-button starting systems which are controlled by a key fob that utilizes proximity technology to communicate with the car. These systems are powered by a small transmitter that is powered by a lithium coin-sized battery. As with all batteries, it eventually needs replacement. Although smart key fobs are made to last for several years, they can suddenly lose power. A dead key fob means that you are unable to unlock or start the car even if you put it close to the front door. The key fob light is flashing. It is not uncommon to see the sensor of a smartkey to drain the battery. It sends a signal to the car every time you push one button, however most of the time the smart key is doing nothing. A single signal to lock or unlock takes up a miniscule amount of the fob's battery which means that there's several years worth of signals worth of battery life for the average smart key battery. The fob is also prone to drain the battery If you keep it in close proximity to other devices that emit electromagnetic fields, for example phones and computers. These gadgets emit magnetic fields of their own which can interfere with and slow down the fob's transmitter. In certain cases the fob could cease to function entirely in the event that the fob is too close to these devices, as per RepairPal. Maintenance As opposed to the traditional car key, a smart one uses technology to control the locks on your vehicle and perform some other functions. It works by transmitting a signal through antennas that are placed both inside and outside your vehicle. These antennas are able to detect the fob's signal and connect with the car's computer. The car interprets the signal, permitting you to start or open the door without a physical key. The fob is now a center of many electronic features that are now available in new vehicles. The most obvious ones are locking and unlocking, remote starting, and chirping sounds that help you find your car in a parking spot. Some fobs allow you to save various settings for different drivers, as well as remotely open windows and even the sunroof. The transmitter itself is a complex device that includes an integrated circuit board and it can be damaged by hard use or exposure to heat or cold. The transmitter can break when it's damaged by a fall or a bang, and the battery contacts can also become bent. These problems can be hard to determine and solve. You can try using your smartphone to get around the issue and see if it works however it's best to keep a spare key in your pocket, just in case. You can purchase a generic smart key replacement that costs up to 70% less than OEM keys and comes with a 3 year warranty.