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What is a Smart Key Car Key? Smart keys are also referred to as proximity keys or key fobs. They can be used to unlock doors and start engines without having to insert a physical keys. They communicate with each other via radiofrequency signals. This helps keep vehicles safe by stopping hotwiring. Smart keys emit unique encrypted signals that prevent access to other vehicles. Convenience You can lock and unlock your vehicle without the need to insert the key into the ignition slot. Simply press the handle on the trunk or door. Modern vehicles often have an option that allows you to start your engine remotely. This is particularly useful for those who are bringing groceries into the vehicle or transferring equipment and passengers. This technology is intended to deter theft of vehicles. Smart keys send out encrypted signals instead of a single frequency, as a regular keyfob does. 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 that recognizes the unique fingerprints of each key. This ensures that only authorized users use it. This can be helpful in the event that you lend your car to family members or friends. Certain smart keys also save user preferences so that the seat, mirrors, and steering wheel adjustments, as well as stereo presets can be set automatically when the key is within reach of the vehicle. Certain smart keys can be programmed to stop the vehicle from exceeding the speed limit once the key is used to start it. This will help keep new drivers safe and is beneficial for families with young children in the back of the vehicle. Security Traditionally keys for cars were cut out of metal and used to unlock the ignition. With the advent of smart keys this is no longer necessary. Smart keys come with a chip which sends an antenna signal to your car. The vehicle recognizes this signal when the driver presses the button on the trunk release or door handle. This means it's not possible to lock your keys inside your car anymore. smart car key programming near me to your vehicle is encrypted, ensuring that only you can use it. The majority of models will also turn off the engine if the car hasn't been running for a few minutes. This feature is particularly useful if you're in an unsafe zone or need to leave the vehicle for reasons of any kind, like at a petrol station. Additionally, if a smart key battery fails during a ride, many systems have a backup method to open and start the vehicle. The backup system involves inserting the key into an opening, or keeping it near a particular area in the cockpit where the 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 vehicle. Battery Life The majority of modern cars have keyless entry systems as well as push-button starters. They are controlled by a smart fob that communicates with the car through proximity technology. These systems use a tiny 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 several years, they can suddenly lose power. A dead key fob means that you are unable to unlock or start your car, even if you place it close to the front door, and the key fob's light blinks. It's not uncommon to find the transmitter in the smart key to drain the battery. It transmits a signal to the car every time you press the button, but most of the time, the smart key does nothing. One single lock/unlock button takes only a tiny amount of the battery power in the fob and that's many years of signals' worth of battery life in the average smart key battery. The fob will also drain the battery if it is placed in proximity to other devices that emit electromagnetic fields like phones and computers. These devices generate their own magnetic field which could interfere with the fob's own transmitter, causing it to work slower. In some cases the fob might stop working altogether when it is placed too close to these devices, as per RepairPal. Maintenance Smart keys are different from traditional keys made of metal by using technology to control the security of your vehicle, as well as perform other functions. It functions by sending signals from the fob to antennas inside and outside the vehicle. These antennas detect the signal and communicate with the computer in your car. The car interprets the signal, permitting you to start or open it without a physical key. New vehicles are loaded with modern electronic features, and the fob is now the hub for many of these functions. The most obvious ones are locking and unlocking, remote starter, and chirping to aid in finding your vehicle in a parking lot. Some fobs allow you to store different settings for various drivers, and remotely open windows and the sunroof. The fob is a complicated electronic device that has an integrated board that could be damaged if subjected to extreme heat or cold. The transmitter can break when it is dropped or banged or smashed. The battery contacts can also become bent. These issues can be difficult to pinpoint and repair. You can use your smartphone to bypass this problem to see if it works. However it is recommended to keep an extra key in your pocket in case. You can purchase an alternative to the majority of OEM smart keys, which can cost up to 70 percent less and comes with a three-year, more than OEM guarantee.