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What is a Smart Key Car Key? Smart keys are also known as proximity keys or key fobs. They are used to unlock doors as well as start engines without a driver needing to insert physical key. They communicate via radiofrequency signals. This helps to keep cars secure by blocking hotwiring. Smart keys also broadcast unique encrypted signals to prevent them from being used by vehicles of other drivers. Convenience You can lock and unlock your vehicle without having to insert the key into the ignition slot. Simply tap the handle of the door or trunk. Modern cars often come with a feature that lets you to start your car wirelessly. This is particularly useful if you are bringing groceries in or transporting passengers or equipment. This technology is intended to protect against theft of vehicles. Smart keys transmit encrypted signals instead of a single frequency, similar to a traditional keyfob. What does this mean? Stuff Works Electronics explains that this is a way to prevent other cars from receiving and responding the same signal. Additionally, some manufacturers utilize a computer chip within the vehicle to recognize the unique fingerprints of each key, which makes sure that only authorized drivers are using it. This is beneficial if you loan your vehicle to family members or friends. Some smart keys can also store user preferences, so that seat, mirrors and steering wheel adjustments, as along with stereo presets can be set automatically when the key is within the range of the vehicle. Some smart keys may also be programmed to stop the vehicle from crossing the speed limit once it is started using that key. This is a great way to ensure the safety of new drivers, and it's also an excellent idea to have children in the back. Security Traditionally keys for cars have been cut from metal and used to unlock the ignition. With smart key technology this is no longer the case. Smart keys have a specific chip that sends signals to your car's antenna. The car detects this signal when the driver presses on the trunk release or door handle. This means that it's not possible to lock your keys in your car any longer. The signal that the smart key transmits to your car is encrypted, which means that only the owner can use it. A majority of models also shut down the engine when the vehicle hasn't been started in a few minutes. This is especially helpful if you are in a hazardous location or you need to leave your vehicle for any reason. Additionally, if a smart key battery fails during a ride, a lot of models have a backup system to open and start the vehicle. The backup system usually involves putting the key in a slot or holding it near a specific part of the cockpit, which transfers energy to an electric motor. Some manufacturers also have an emergency mechanical key blade in the key which can be used to open the trunk and begin the car if required. Battery Life The majority of newer cars have keyless entry systems as well as push-button starters. These are controlled by a smart device that communicates with the car through proximity technology. These systems utilize a tiny transmitter, powered by a lithium coin-sized battery. Like any other battery, it eventually needs replacement. Most smart batteries for key fobs last for several years however, this doesn't mean that they won't be unable to function and shut down suddenly. A dead fob means it isn't able to unlock or start the car even when you hold it near the door to the front and the key fob light is flashing. It's not unusual for the transmitter inside a smart key to drain the battery. The smart key emits an alert each time you press a button. But most of the times, it doesn't do anything. The battery of the smart key is sufficient to last for several years of locking and unlocking signals. The fob also drains the battery when it is located near other devices which emit electromagnetic fields such as phones and computers. These gadgets produce their own magnetic fields, which can affect the fob's transmitter and cause it to operate more slowly. RepairPal states that the fob may be inoperable if placed too close to the gadgets. Maintenance Smart keys differ from traditional keys made of metal by using technology to control the locks of your car and perform other functions. It works by transmitting a signal to antennas located inside and outside your vehicle. They detect the fob's signal and connect with the car's computer. The car interprets the signal which allows you to turn it on or open it without a physical key. The fob is now the hub of numerous electronic features on new automobiles. The most obvious ones are locking and unlocking, remote starting and chirping to help you find your car in a parking lot. Some fobs even let you store specific settings for different drivers, as well as remotely open windows and sunroofs. The transmitter itself is a complex device that includes an integrated circuit board and it could be damaged by hard use or exposure to cold or hot. smart key car can be broken when it's knocked or dropped or smashed. The contacts on the battery can become bent. These issues can be difficult to determine and fix. You can utilize your smartphone to overcome this issue to test if it works. However, you should always keep an extra key in your pocket in case. You can purchase a generic replacement for the majority of OEM smart keys, which costs up to 70% less and comes with a three-year better-than-OEM guarantee.