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What is a Smart Key Car Key? Also known as keys for proximity, key fobs or remote keys, smart keys work to unlock doors and start engines without having to insert the key. They communicate with one another through radiofrequency signals. Apart from that, it helps to protect cars by preventing attempts to connect hotwires. Smart keys transmit unique encrypted signals that block them from being accessed by other vehicles. smart car key case than having to insert keys into the ignition slot it is possible to lock and unlock your vehicle by merely 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 particularly helpful if you're bringing in groceries as well as transporting passengers or equipment. This technology is intended to prevent vehicle theft. Instead of sending one frequency signal as a standard key fob it sends out several encrypted signals to the car's antennas embedded in it when you walk towards it. How Stuff Works Electronics explains that this is a way to prevent other cars from receiving and responding the same signal. Some manufacturers also include computers in their vehicles which recognizes the unique fingerprint of every key. This can help ensure that only authorized users use it. This is helpful for when you loan your vehicle to family members or friends. Certain smart keys also store user settings so that seat, mirrors, and steering wheel adjustments as well as stereo presets can be set automatically when the key is within reach of the vehicle. To make things easier, some smart keys can be programmed to stop the vehicle from exceeding a particular speed limit when started using that specific key. This is a great method to ensure that new drivers are safe and also an excellent idea to have children in the back of the vehicle. Security Traditionally keys for cars have been made of metal and used to unlock the ignition. With smart key technology, however, this is no longer required. Smart keys have an exclusive chip that sends an alert to your car's antenna. This signal is then acknowledged by the vehicle when the driver presses on the handle on the door or trunk release. It is now impossible to lock the keys inside your vehicle. The smart key's signal to your vehicle is secured so that only you have access to it. Additionally, the majority of models will turn off the engine if the vehicle hasn't been started in the last couple of minutes. This feature is especially helpful when you're in a dangerous area or you have to leave the vehicle for any reason, such as at a gas station. Additionally, if a smart key battery runs out during a ride, many systems have a backup method of opening and starting the vehicle. The backup method is to insert the key in a slot or holding it close to an area in the cockpit in which energy is transferred to an electric motor. Certain manufacturers have a mechanical key blade that can be used in an emergency situation to open the trunk or start the car. Battery Life The majority of modern cars have keyless entry and push-button starting systems, controlled by a smart key fob that makes use of proximity technology to communicate with the car. These systems rely on a small transmitter that is powered by a lithium coin-sized battery. It will eventually need to be replaced as with any other battery. Although smart key fobs are designed to last for years but they may suddenly lose power. If the fob is dead, you won't be able to unlock or start your car when you place it close to the front door. It's not uncommon for the transmitter of the smart key to drain the battery. It sends a signal to the car every time you press one button, however most times, the smart key does nothing. The battery of a smart key can be used to last for several years of signalling to lock and unlock. The fob will also drain the battery if you keep it close to other devices emitting electromagnetic fields, for example phones and computers. These gadgets produce their own magnetic field which can interfere with the fob's transmitter, causing it to run slower. In certain cases the fob might cease to function completely in the event that the fob is too close to these devices, as per RepairPal. Maintenance Smart keys differ from traditional metal keys in that they utilize technology to control the locks of your vehicle in addition to performing other functions. It works by sending a signal to antennas located inside and outside your vehicle that detect the fob's signal and connect with the car's computer. The car then interprets the signal and allows you to open or start it without using the physical key. The fob is now a center of numerous electronic features found in modern automobiles. The most obvious are locking and unlocking, remote start, and chirping to aid in finding your vehicle in a parking lot. Certain fobs let you store different settings for different drivers, and can even remote-operated windows and the sunroof. The fob is a complex electronic device with an integrated board that could be damaged if placed in a position that is too harsh or exposed to extreme cold or heat. The transmitter can break if it is knocked or dropped, and the contacts on the battery can become bent. These issues can be challenging to pinpoint and resolve. 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 wallet in a case. You can purchase a generic smart key replacement that is up to 70% less than OEM keys and comes with a three-year warranty.