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What is a Smart Key Car Key? Differently referred to as keys that are in proximity Key fobs, proximity keys, or remote keys, smart keys can be used to unlock doors and start engines without having to insert the physical key. They communicate with each other using radiofrequency signals. This helps to keep cars safe by blocking hotwiring. Smart keys also broadcast unique encrypted signals that prevent them from being used by vehicles of other drivers. Convenience Instead of inserting a key into an ignition slot instead, you can lock and unlock your car by merely touching the handle of the door or trunk. A lot of modern cars also have an option that allows you to start your engine remotely. This is especially useful when you're bringing groceries in or transporting equipment, passengers, or passengers. This technology is designed to protect against theft of vehicles. Instead of transmitting one frequency signal as a standard key fob, a smart key sends out various encrypted signals to the car's antennas embedded in it when you come close to it. How Stuff Works Electronics explains that this is a way to prevent other cars from receiving and responding to the same signal. Some manufacturers also use computers in their vehicles which recognizes the unique fingerprint of each key. This can help ensure that only authorized users use it. This is particularly useful for when you loan your car to family and friends. Some smart keys can also save user settings, meaning that seat, steering wheel mirror, seat, and stereo presets are automatically set when the key is within the 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 using that specific key. smart car key repair is a great method to ensure that new drivers are safe and is beneficial if you have children in the back of the vehicle. Security Traditionally, keys were cut from metal to unlock the ignition. Smart key technology eliminates this requirement. Smart keys are equipped with an exclusive chip that sends a signal to the car's antenna. The vehicle recognizes this signal when the driver presses on the trunk release or door handle. It is now impossible to lock the keys inside your vehicle. The signal that the smart key sends to your car is encrypted, meaning that only the owner of the car can use it. Additionally, the majority of models will stop the engine in the event that the vehicle was not started in the last couple of minutes. This is especially helpful when you are in a dangerous location or need to leave your vehicle for any reason. A number of systems also include backup systems for opening and starting the car when the battery of the smart keys runs out while riding. The backup system involves placing the key in a slot or holding it near a particular location in 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 situation to open the trunk or to start the vehicle. Battery Life Many newer cars have keyless entry and push-button start systems, controlled by a smart key fob that makes use of proximity technology to connect with the car. These systems are powered by a tiny transmitter that is powered by a lithium coin-sized battery. It will eventually have to be replaced like any other battery. Most smart batteries for key fobs last several years however, this doesn't mean that they won't be unable to function and shut down quickly. If the fob battery is dead, it won't be able unlock or start your car even when you place it close to the front door. It is not uncommon to see the transmitter of a smart key to drain the battery. It transmits a signal to the car each time you press the button, but most times, the smart key is doing nothing. The battery of a smart key can be used to provide several years of locking and unlocking signals. The fob may also drain the battery if placed in proximity to other devices that emit electromagnetic field like phones and computers. These devices create their own magnetic field, which can affect the fob's transmitter and cause it to work slower. In some instances the fob could be unable to function when it is placed too close to these devices, as per RepairPal. Maintenance Smart keys are different from traditional metal keys in that they utilize technology to control the locks on your vehicle, as well as perform other functions. It functions by transmitting signals from the fob to antennas in and outside the vehicle. These antennas receive the signal and then communicate with your car's computer. The car is then able to interpret the signal and allows you to open or begin it without having to use the physical key. New cars are packed with high-tech electronic features, and the fob has become the hub for many of these functions. The most obvious ones are locking and unlocking, remote starter, and chirping sounds to assist you in finding your car in a parking space. Some fobs allow you to save different settings for different drivers, as well as remote-operated windows and the sunroof. The fob is a complex electronic device that includes an integrated board that could be damaged if subjected to extreme heat or cold. The transmitter could be damaged if it is dropped or banged and the battery contacts may also be bent. The issues are often difficult to pinpoint and fix. You can utilize your smartphone to get around this issue to see if it works. However, you should always keep a spare key in your pocket in case. You can purchase a generic replacement for the majority of OEM smart keys that cost up 70 percent less and comes with a three-year better-than-OEM warranty.