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What is a Smart Key Car Key? Smart keys are also known as proximity keys or key fobs. They function to unlock doors as well as start engines without needing to insert physical key. They communicate by radiofrequency signals. This helps keep vehicles safe by blocking hotwiring. Smart keys also transmit unique encrypted signals that prevent them from being used by other vehicles driven by drivers. Convenience You can lock and unlock your vehicle without inserting the key into the ignition slot. Simply tap the handle of the door or trunk. Modern cars often have a feature which allows you to start your car from a distance. This is particularly useful when you are bringing in groceries as well as transporting passengers or equipment. This technology is intended to stop theft of vehicles. Smart keys transmit encrypted signals instead of a single frequency like a standard keyfob. This stops other vehicles from being able to receive and respond to the same signal. which explains how Stuff Works Electronics. Additionally, some manufacturers employ a computer chip inside the vehicle to identify the unique fingerprint of each key, which can ensure that only authorized drivers are using it. This can be helpful should you lend your vehicle to family and friends. Certain smart keys can also save user settings, meaning that the steering wheel, seat, mirror, and stereo presets are automatically set when the key is within reach of the car. Some smart keys can be programmed to stop the vehicle from exceeding the speed limit once the key is used to start it. This can help keep novice drivers safe and beneficial if you have young children in the back. Security Traditionally, car keys have been cut from metal and used to unlock the ignition. With the advent of smart key technology it is no longer necessary. Smart keys are equipped with an exclusive chip that sends signals to your car's antenna. The car recognizes this signal when the driver presses the button on the trunk release or door handle. It is now impossible to lock the keys inside your vehicle. The smart key's signal to your vehicle is encrypted to ensure that only you have access to it. A majority of models also shut down the engine if it hasn't been running for a few minutes. This feature is particularly helpful when you are in a hazardous location or need to leave your vehicle for any reason. Additionally, if a smart key battery is depleted during a trip, many systems come with a backup plan to open and start the vehicle. smart key replacement near me consists of placing the key in an opening or keeping it in a particular area of the cockpit that transfers energy to an electric motor. Some manufacturers also have an emergency mechanical key blade hidden inside the key that can be used to open the trunk and start the car in case of need. Battery Life The majority of modern cars have keyless entry and push button starting systems, controlled by a smart key fob that utilizes proximity technology to communicate with the car. These systems rely on a small transmitter powered by a coin-sized lithium battery. It will eventually have to be replaced, just like any other battery. Even though smart key fobs are made to last for years They can be suddenly lost power. If the fob's battery is dead you won't be able to unlock or start your car even in the event that you put it close to the front door. It's not uncommon to find the transmitter in the smart key to drain the battery. The smart key transmits signals each time you press a button. But most of the times, it doesn't do anything. One single lock/unlock button takes only a fraction of the fob's battery power which means that there's several years ' worth of signals worth of battery life in the average smart key battery. The fob can also drain the battery If you keep it in close proximity to other devices emitting electromagnetic fields, like phones and computers. These devices emit their own magnetic fields, which can interfere and slow down the fob transmitter. In some cases, the fob may even stop working altogether when it is placed too close to these devices, according to RepairPal. Maintenance Smart keys are different from traditional keys by using technology to control the locks of your car as well as perform other functions. It works by transmitting signals from the fob to antennas within and outside the vehicle. These antennas receive the signal and communicate with your car's computer. The car is then able to interpret the signal and allows you to open or begin it without having to use the physical key. New cars are loaded with advanced electronic features and the fob has become the hub for many of these functions. The most obvious ones are locking and unlocking, remote start, and chirping sounds that help you find your vehicle in a parking lot. Some fobs let you save specific settings for different drivers and open windows remotely and sunroofs. The transmitter itself is a sophisticated device with an integrated circuit board and it could be damaged by hard use or exposure to cold or heat. The transmitter could be damaged when it is hit or dropped and the battery contacts can also become bent. These issues can be difficult to pinpoint and repair. You can use your phone to bypass this problem to test 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 most OEM smart keys, which can cost up to 70% less and comes with a three-year, more than OEM guarantee.