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What is a Smart Key Car Key? Also known as smart key for car near me as key fobs, remote keys, smart keys function to unlock doors and start engines without the driver needing to insert a physical key. They communicate with each other by using radiofrequency signals. This helps to keep vehicles secure by not allowing hotwiring. Smart keys emit unique encrypted signals that prevent access to other vehicles. Convenience You can lock and unlock your vehicle without having to insert the key into the ignition slot. Simply tap the handle on the door or trunk. A lot of modern cars also have the option to start your engine from a distance. This is particularly helpful for those who are bringing groceries into the vehicle or transferring equipment and passengers. This technology is designed to stop theft of vehicles. Smart keys send out encrypted signals instead of a single frequency, like a standard keyfob. How Stuff Works Electronics explains that it is impossible for other cars to receive and responding to the same signal. Certain manufacturers also have computers in their vehicles which recognizes the unique fingerprint of every key. This ensures that only authorized users use it. This is particularly useful when you lend your car to family and friends. Some 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. Some smart keys can be programmed to stop the vehicle from exceeding a certain speed limit when it is started using that key. This is a great method to protect new drivers and is an excellent idea for families with children in the back. Security Traditionally, keys were cut from metal to unlock the ignition. With the advent of smart keys, it is no longer required. Smart keys have a specific chip which sends signals from the antenna to your car. This signal is then detected by the vehicle when the driver presses on the handle on the door or trunk release. This means that it's impossible to lock your keys into your car anymore. The signal that the smart key sends to your car is encrypted, which means that only the owner of the car can use it. In addition, many models will turn off the engine if the car has not been started within the last few minutes. This is especially useful when you're in a dangerous location or need to get out of the vehicle for reasons of any kind, like at a gas station. Furthermore, if the smart key battery fails during a trip, many systems come with a backup plan of opening and starting the vehicle. The backup method typically involves placing the key into the slot or putting it near a specific part of the cockpit that transfers energy to an electric motor. Certain manufacturers also include 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 Many newer cars have keyless entry as well as push-button starting systems operated by a smart key fob that makes use of proximity technology to connect with the car. These systems utilize a tiny transmitter, powered by a coin-sized lithium battery. Like all batteries it will eventually need replacement. Even though smart key fobs are designed to last for years however, they can suddenly lose power. A dead key fob means you can't unlock or start the car even if you keep it near the front door, and the key fob's light blinks. It's not unusual for the transmitter of the smart key to drain the battery. The smart key sends a signal every when you press a button. But the majority of time, it doesn't do anything. A single lock/unlock signal uses up a miniscule amount of the battery power in the fob which means that there's many years of signals' worth of battery life left in the average smart key battery. The fob is also prone to drain the battery when you keep it close to other devices emitting electromagnetic fields, for example phones and computers. These devices generate their own magnetic fields, which could interfere with the fob's transmitter and cause it to function slower. In some cases, the fob may even cease to function completely if the fob is left too close to these devices, according to RepairPal. Maintenance As opposed to the traditional car key, a smart key uses technology to manage the locks on your vehicle, and also perform other functions. It functions by transmitting an indication from the fob to antennas located inside and outside the vehicle. These antennas detect the signal and communicate with your car's computer. The car interprets the signal permitting you to start or open it without a physical key. The fob is now a central point for many electronic features that are now available in new vehicles. The most obvious uses include locking and unlocking your car, remote start and chirping sound to help you locate your vehicle in a parking spot. Some fobs let you store specific settings for different drivers and remotely open windows and sunroofs. The fob itself is a specialized device with an integrated circuit board, and it is susceptible to damage when exposed to cold or heat. The transmitter may be damaged if it is knocked or dropped. The battery contacts may become bent. These problems can be difficult to pinpoint and solve. It is possible to use your phone to overcome this issue to see if it works. However, you should always keep a spare key in your pocket or case. You can purchase a generic replacement for most OEM smart keys, which can cost up to 70 percent less and comes with a three-year better-than-OEM guarantee.