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What is a Smart Key Car Key? Smart keys are also referred to as proximity keys or key fobs. They are used to unlock doors and to start engines without a driver having to insert physical keys. They communicate with each other by using radiofrequency signals. This helps to keep vehicles secure by blocking hotwiring. Smart keys also broadcast unique encrypted signals to prevent them from being used by other vehicles driven by drivers. Convenience Instead of having to insert a key into an ignition slot to lock and unlock your car by simply touching the handle on the door or trunk. A majority of modern cars also come with a feature that lets you to start your car from a distance. This is especially useful when you're bringing groceries in or transporting equipment, passengers, or passengers. This technology is intended to protect against theft of vehicles. Smart keys send out encrypted signals instead of a single frequency as a regular keyfob does. This blocks other cars from being able to receive and respond to the same signal. explains How Stuff Works Electronics. Certain manufacturers also have computers in their vehicles that can recognize the unique fingerprint of every key. This helps to ensure that only authorized users use it. This can be helpful in the event that you lend your car to family and friends. Some smart keys can also store user preferences, allowing seat, mirrors, and steering wheel adjustments as well as stereo presets can be automatically set when the key is within range of the vehicle. To make life easier, certain smart keys can be programmed to stop the vehicle from exceeding a particular speed limit once it has been started with that particular key. This can help keep novice drivers safe, and is particularly beneficial if you have young children in the back. Security Traditionally, car keys have been made of metal and used to unlock the ignition. With the advent of smart keys, it is no longer necessary. Smart keys are equipped with an exclusive chip that sends a signal to the car's antenna. This signal is then acknowledged by the vehicle when the driver presses on the handle of the door or trunk release. It is now impossible to lock the keys inside your vehicle. The signal sent by the smart key to your vehicle is secured so that only you have access to it. In addition, most models will stop the engine if the car hasn't been started in the last few minutes. This feature is particularly useful if you are in a dangerous area or you have to get out of your vehicle for any reason. A lot of systems also have a backup system for opening and starting the car when the battery of the smart keys runs out during a ride. The backup system usually involves placing the key in the slot or putting it near a specific part of the cockpit to transfer energy to an electric motor. Some manufacturers have a mechanical key blade that can be used in an emergency situation to open the trunk or to start the vehicle. Battery Life The majority of modern cars have keyless entry as well as push-button starting systems, controlled by a smart key fob that uses proximity technology to communicate with the car. These systems are powered by a tiny transmitter which is powered by a lithium coin-sized battery. It will eventually require to be replaced as with any other battery. Even though smart key fobs are made to last for several years They can be suddenly lost power. A dead fob means you won't be able to lock or start the car even when you hold it close to the front door, and the key fob light flashes. It is not uncommon for the transmitter of a smart key to drain the battery. The smart key emits a signal every time you press the button. But the majority of time, it doesn't do anything. A single lock/unlock signal uses up a miniscule amount of the battery power of the fob and, therefore, 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 place it close to other devices that emit electromagnetic fields, for example phones and computers. These gadgets produce their own magnetic field, which can affect the fob's transmitter, causing it to run slower. RepairPal states that the fob might cease to function if placed too close to the gadgets. Maintenance As opposed to the traditional car key, a smart one utilizes technology to control the locks on your vehicle and perform some other functions. It functions by sending an electronic signal from the fob to antennas located inside and outside the vehicle. The antennas pick up the signal and then communicate with your car's computer. The car interprets the signal, and allows you to begin or open it without a physical key. smart car key reprogramming is now a central point for many electronic features in new automobiles. The most obvious features include locking and unlocking your car, remote start and chirping to help you locate your car in a parking space. Certain fobs let you store different settings for various drivers, and remote-operated windows and the sunroof. The fob is a complicated electronic device that includes an integrated board. It can be damaged if utilized too vigorously or exposed to extreme cold or heat. The transmitter can be damaged if it is knocked or dropped. The battery contacts could be bent. These issues can be difficult to determine and repair. You can use your phone to overcome this issue to see if it works. However you should always keep a spare key in your pocket in a case. You can purchase an ordinary smart key replacement that's up to 70 percent less than OEM keys and comes with a 3-year warranty.