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What is a Smart Key Car Key? Smart keys are also referred to as proximity keys or key fobs. look what i found can be used to unlock doors and start engines without having to insert physical key. They communicate using radiofrequency signals. This helps keep vehicles secure by stopping hotwiring. Smart keys also transmit unique encrypted signals to stop them from being used by vehicles of other drivers. Convenience Rather than having to insert the key into an ignition slot to lock and unlock your vehicle by simply touching the handle of the door or trunk. A majority of modern cars also come with a feature that allows you to start your car from a distance. This is particularly useful when you are bringing groceries in or transporting passengers or equipment. This technology is designed to prevent vehicle theft. Smart keys transmit encrypted signals instead of a single frequency like a normal keyfob. How Stuff Works Electronics explains that this prevents other cars receiving and responding the same signal. Additionally, some companies utilize a computer chip within the vehicle to recognize the unique fingerprint of each key, which makes sure that only authorized drivers are using it. This is beneficial if you loan your car to family and friends. Certain smart keys can also store user settings, ensuring that seat, steering wheel mirror, seat, and stereo presets are automatically set when the key is within the range of the car. Certain smart keys can be set up to prevent the vehicle from going over a certain speed limit when the key is used to start it. This can help keep unexperienced drivers safe, and is particularly beneficial for families with young children in the back of the vehicle. Security Traditionally keys for cars have been cut out of metal and used to unlock the ignition. Smart key technology eliminates this requirement. Smart keys come with an exclusive chip that sends a signal to the car's antenna. The vehicle recognizes this signal when the driver presses on the trunk release or door handle. This means that it's impossible to lock your keys inside your car any longer. The signal sent by the smart key to your vehicle is encrypted so that only you are able to use it. In addition, many models will disable the engine if the car is not started in the last few minutes. This feature is particularly helpful when you are in a dangerous location or need to leave your vehicle for any reason. A number of systems also include backup systems for opening and starting the car in case the battery of the smart key runs out while on a ride. The backup system usually involves placing the key into a slot or holding it near a specific area of the cockpit, which transfers energy to an electric motor. Some manufacturers have a mechanical key blade that can be utilized in a situation of emergency to open the trunk or start the car. Battery Life Most newer cars come with keyless entry systems as well as push-button starters. They are controlled by a smart key fob that communicates with the car using proximity technology. These systems are powered by a small transmitter that is powered by a lithium coin-sized battery. As with all batteries that will eventually require replacement. Even though smart key fobs are designed to last for years They can be suddenly lost power. If the fob's battery is dead you won't be able unlock or start your car even in the event that you put it near the front door. It is not uncommon to see the transmitter of a smart key drain the battery. The smart key transmits signals each when you press the button. But the majority of time, it does nothing. The battery of a smart key is large enough to power several years of signalling to lock and unlock. The fob is also prone to drain the battery if you keep it close to other devices emitting electromagnetic fields, like phones and computers. These gadgets emit their own magnetic fields, which can interfere and slow down the fob transmitter. RepairPal states that the fob might not function if it's placed too close to the gadgets. Maintenance Smart keys are different from traditional keys in that they utilize technology to control the locks of your vehicle, as well as perform other functions. It works by sending a signal to the antennas that are placed both inside and outside your vehicle. These antennas are able to detect the fob's presence and communicate with the car's computer. The car then interprets the signal and allows you to open or start it without using the physical key. New cars are loaded with advanced electronic features, and the fob is now the hub for many of these functions. The most obvious functions include locking and unlocking your vehicle, remote starting and chirping sounds to aid in locating your vehicle in a parking lot. Some fobs even let you store specific settings for various drivers and remotely open windows and sunroofs. The fob itself is a complex device that includes an integrated circuit board and it is susceptible to damage through repeated use or exposure to cold or heat. The transmitter could be damaged if it is hit or dropped or smashed. The battery contacts can also become bent. These issues can be difficult to determine and solve. You could try using your smartphone to get around the problem and see if that helps however it's a good idea to keep a spare key inside your pocket in a case. You can purchase a generic replacement for the majority of OEM smart keys, which can cost up 70% less and is backed by a three-year better-than-OEM warranty.