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What is a Smart Key Car Key? Variously known as keys for proximity as well 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 via radiofrequency signals. This helps to keep vehicles safe by preventing hotwiring. Smart keys also broadcast unique encrypted signals to block them from being used by other vehicles owned by drivers. Convenience Rather than having to insert a key into an ignition slot, you can lock and unlock your car by merely touching the handle on your door or trunk. A majority of modern cars also have a feature which allows you to start your car from a distance. This is particularly useful when you're bringing groceries in or transporting passengers and equipment. This technology is designed to help prevent vehicle theft. Instead of transmitting one frequency signal similar to a normal key fob does smart keys send out various encrypted signals to the car's antennas embedded in it when you approach it. This blocks other cars from receiving and responding to the same signal, which explains how Stuff Works Electronics. Some manufacturers also use an electronic chip in the vehicle which recognizes the unique fingerprints of each key. This can help ensure that only authorized users use it. This is particularly useful in the event that you lend your vehicle to family members or friends. Some smart keys also store user preferences, allowing mirrors, seats and steering wheel adjustments as well as stereo presets can be automatically set when the key is within reach of the vehicle. For additional convenience, certain smart keys can be programmed to stop the car from exceeding a specific speed limit once it has been initiated with that specific key. This is a great way to ensure the safety of new drivers, and it's also beneficial for families with children in the back of the vehicle. Security Traditionally keys for cars have been made of metal and used to unlock the ignition. With the advancement of smart keys, it is no longer necessary. Smart keys are equipped with an electronic chip that transmits signals to the car's antenna. The signal is subsequently acknowledged by the vehicle when the driver presses a button on the handle of the door or trunk release. It is now impossible to lock your keys into your vehicle. The signal that the smart key sends to your car is encrypted, which means that only the owner is able to use it. The majority of models also shut off the engine if the car hasn't been started in just a few minutes. This feature is especially useful in case you're in a hazardous zone or need to leave the vehicle for any reason, such as at a petrol station. Additionally, if the smart key battery gets depleted during a ride, many systems have a backup method of opening and starting the vehicle. smart key locksmith near me is to insert the key in the slot, or putting it near a particular area in the cockpit in which energy is transferred to an electric motor. Certain manufacturers also include an emergency mechanical key blade in the key that could be used to open the trunk and start the car if needed. Battery Life Many newer cars have keyless entry as well as push-button starting systems which are controlled by a key fob that makes use of proximity technology to communicate with the car. These systems are powered by a small transmitter that is powered by a coin-sized lithium battery. It will eventually have to be replaced just like any other battery. The majority of smart batteries for key fobs last for several years, but that doesn't mean they'll never lose power and stop working suddenly. If the fob is dead, you won't have the ability to unlock or start your car if you hold it up near the front door. It is not uncommon for the transmitter of a smart key drain the battery. The smart key sends signals each when you press the button. But the majority of times, it doesn't do anything. A single lock/unlock signal takes up a miniscule amount of the fob's battery and, therefore, there's several years worth of signals' worth of battery life in an average smart key battery. The fob will also drain the battery when it is located near other devices which emit electromagnetic fields like computers and phones. These devices emit magnetic fields of their own which can interfere with and slow down the fob's transmitter. RepairPal states that the fob could be inoperable if placed too close to the gadgets. Maintenance Smart keys differ from traditional keys because they use technology to control the locks on your vehicle and perform other functions. It works by transmitting an electronic signal from the fob to antennas located inside and outside the vehicle. The antennas pick up the signal and communicate with the computer in your car. The car interprets the signal allowing you to start or close it without having to use the physical key. The fob is now a central point for numerous electronic features on new vehicles. The most obvious features include locking and unlocking your car, remote starting and chirping to aid in locating your vehicle in a parking lot. Certain fobs let you store different settings for different drivers, and even remotely open windows and the sunroof. The fob is a complicated electronic device with an integrated board that can be damaged if it is used too hard or exposed to extreme heat or cold. The transmitter can be broken in the event of it being knocked or dropped or smashed. The contacts on the battery can become bent. These issues can be challenging to identify and fix. You can utilize your smartphone to solve this issue and test if it works. However it is recommended to keep an extra key in your pocket or case. You can purchase an ordinary smart key replacement that is up to 70% less than OEM keys and comes with a three-year warranty.