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What is a Smart Key Car Key? Also known as proximity keys Key fobs, proximity keys, or remote keys, smart keys function to unlock doors and start engines without the driver needing to insert the key. They communicate with each other using radiofrequency signals. This helps keep cars safe by not allowing hotwiring. Smart keys also broadcast unique encrypted signals to prevent them from being used by vehicles of other drivers. Convenience Instead of inserting a key into an ignition slot, you can lock and unlock your vehicle simply by touching the handle on your door or trunk. Modern vehicles often have an option that allows you to remotely start your engine. This is especially helpful when you're taking groceries home or transporting equipment and passengers. This technology is intended to deter 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 prevents other cars receiving and responding the same signal. In addition, some manufacturers incorporate a computer chip into the vehicle that can recognize the unique fingerprint of each key, which helps ensure that only authorized drivers are using it. This is particularly useful if you loan your car to family and friends. Some smart keys can store user preferences, so that seat, steering wheel, mirror and stereo presets can be automatically set when the key is within range of the car. To make things easier, some smart keys can be configured to prevent the vehicle from exceeding a certain speed limit once it has been activated with a specific key. This is a great way to ensure that new drivers are safe and it's an excellent idea to have children in the back. Security Traditionally, keys were cut from metal to unlock the ignition. Smart keys eliminate this requirement. Smart keys come with a chip that transmits an electromagnetic signal from the antenna to your car. The signal is subsequently acknowledged by the vehicle when the driver presses on the door handle or trunk release. It is now impossible to lock your keys into your vehicle. The smart key's signal to your vehicle is encrypted so that only you have access to it. The majority of models will also turn off the engine when the car hasn't been started in several minutes. This is especially useful if you're in an unsafe area or you have to leave the vehicle for reasons of any kind, like at a petrol station. A lot of systems also have an alternative system for opening and starting the car if the battery of the smart key goes out while you are on a ride. The backup system involves inserting the key in a slot, or holding it near a particular area of the cockpit in which energy is transferred to an electric motor. Some manufacturers also have an key blade that is an emergency mechanical lock in the key which can be used to open the trunk and start the car should it be needed. Battery Life The majority of newer cars come with keyless entry and push-button starting systems which are controlled by a key fob that uses proximity technology to connect with the car. These systems are powered by a tiny transmitter which is powered by a lithium coin-sized battery. It will eventually need to be replaced, just like any other battery. Most smart batteries for key fobs last for a while However, it doesn't mean they won't fail to power up and stop functioning at any time. If smart roadster key programming www.g28carkeys.co.uk is dead, you can't unlock or start the car, even if you put it near the door to the front and the key fob light flashes. It is not uncommon to see the sensor of a smartkey to drain the battery. It sends a signal to your car each time you touch the button, but most times the smart key is not doing anything. The battery of a smart key is enough to last for a long time. unlock and lock signals. The fob can also drain the battery if placed in proximity to other devices that emit electromagnetic fields, such as computers and phones. These devices create their own magnetic field which could affect the fob's transmitter and cause it to run slower. In some instances the fob might be unable to function when the fob is placed too close to these devices, as per RepairPal. Maintenance Smart keys differ from traditional metal keys by using technology to control the security of your vehicle, as well as perform other functions. It works by sending an indication from the fob to antennas within and outside the vehicle. These antennas detect the signal and then communicate with your car's computer. The car interprets the signal which allows you to turn it on or close it without having to use the physical key. New cars are loaded with high-tech electronic features and the fob is now a hub for many of these functions. The most obvious ones are locking and unlocking, remote starting, and chirping sound to aid in finding your car in a parking space. Some fobs also let you store specific settings for various drivers and open windows remotely and sunroofs. The fob is a complex electronic device that includes 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 may break when it is dropped or banged or smashed. The contacts on the battery can become bent. These issues can be difficult to diagnose and fix. It is possible to use your phone to solve this issue and see if it works. However it is recommended to keep an extra key in your wallet in a case. You can buy a generic replacement for the majority of OEM smart keys that cost up 70% less and is backed by a three-year higher-quality guarantee than OEM.