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What is a Smart Key Car Key? Smart keys are also referred to as proximity keys or key fobs. They work to unlock doors and start engines without a driver needing to insert physical key. They communicate by radiofrequency signals. This helps keep cars secure by stopping hotwiring. Smart keys broadcast unique encrypted signals that keep access to other vehicles. Convenience You can lock and unlock your vehicle without inserting the key into the ignition slot. Simply tap the handle on the door or trunk. Modern vehicles often have the ability to remotely start your engine. This is particularly helpful when you're bringing groceries in or transferring equipment and passengers. This technology is intended to stop theft of vehicles. Instead of transmitting one frequency signal similar to a normal key fob does it sends out several encrypted signals to the car's antennas that are embedded when you approach it. This stops other vehicles from receiving and responding to the same signal. explaining how Stuff Works Electronics. Some manufacturers also include a computer-chip in the vehicle that recognizes the unique fingerprints of each key. This helps to ensure that only authorized users are using it. This is helpful should you lend your vehicle to family members or friends. Some smart keys also store user preferences, allowing mirrors, seats and steering wheel adjustments as and stereo presets can be automatically set when the key is within the range of the vehicle. Certain smart keys can be set up to prevent the vehicle from exceeding the speed limit when it is started using that key. This can help keep novice drivers safe, and is particularly beneficial for families with young children in the back of the vehicle. Security Traditionally, car keys have been cut out of metal and used to unlock the ignition. Smart key technology eliminates this requirement. Smart keys have a special chip that sends an antenna signal to your car. This signal is recognized 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 signal sent by the smart key to your vehicle is encrypted so that only you can use it. In addition, many models will disable the engine if it hasn't been started within the last few minutes. This feature is especially helpful if you're in an unsafe area or you have to leave the vehicle for reasons of any kind, like at a gas station. There are many systems that also have backup systems for opening and starting the car in case the battery of the smart keys runs out during a ride. The backup system typically consists of placing the key in an opening or keeping it near a specific part of the cockpit that transfers energy to an electric motor. Some manufacturers have a motorized key blade that can be utilized in a situation of emergency to open the trunk or to start the vehicle. Battery Life Most newer cars have keyless entry and push button starting systems operated by a smart key fob, which uses proximity technology to connect with the car. These systems rely on a small transmitter, powered by a lithium coin-sized battery. Like all batteries it will eventually need replacement. Although smart key fobs are made to last for a long time but they may suddenly lose power. If smart key for cars is dead, it won't be able unlock or start your car even in the event that you put it near the front door. It's not unusual for the transmitter in the smart key to drain the battery. The smart key emits a signal every time you press the button. However, the majority of the time, it doesn't do anything. A single lock/unlock signal takes up a miniscule amount of the fob's battery and that's several years ' worth of signals' worth of battery life left in the average smart key battery. The fob will also drain the battery if placed near other devices that emit electromagnetic fields, such as phones and computers. These gadgets produce their own magnetic field which can interfere with the fob's transmitter and cause it to operate more slowly. RepairPal reports that the fob may stop working if it is placed too close to the gadgets. Maintenance In contrast to the traditional car key, a smart key uses technology to manage the locks on your vehicle, and also perform other functions. It works by sending an indication from the fob to antennas in and outside the vehicle. These antennas receive the signal and communicate with the computer in your car. The car interprets the signal, and allows you to begin or open it without a physical key. New vehicles are loaded with advanced electronic features and the fob has become the hub for many of these functions. The most obvious features are locking and unlocking your car, remote start and chirping noises to assist you in finding your car in a parking spot. Some fobs even let you store specific settings for various drivers and open windows remotely and sunroofs. The fob is an elaborate electronic device that includes an integrated board. It can be damaged if utilized too vigorously or exposed to extreme cold or heat. The transmitter could be damaged if it is hit or dropped. The battery contacts may be bent. The issues are often difficult to diagnose and resolve. You can use your smartphone to overcome this issue to test if it works. However, you should always keep an extra key in your wallet in a case. You can buy an ordinary smart key replacement that's up to 70% less than OEM keys and comes with a three-year warranty.

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