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What is a Smart Key Car Key? Differently referred to as keys that are in proximity as well as key fobs, remote keys, smart keys work to unlock doors and start engines without needing to insert a physical key. They communicate with radiofrequency signals. Among other things, this assists in keeping cars safe by blocking attempts at 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 instead, you can lock and unlock your car simply by touching the handle on your door or trunk. A lot of modern cars include a feature that permits you to start your car via the internet. This is particularly useful when you are bringing in groceries or transporting passengers, or equipment. This technology is intended to prevent vehicle theft. Smart keys send out encrypted signals instead of a single frequency, similar to a traditional keyfob. This blocks other cars from being able to receive and respond to the same signal. This explaining how Stuff Works Electronics. In addition, some manufacturers use a computer chip in the car to detect the unique fingerprint of each key, which ensures that only authorized drivers use it. This is helpful when you lend your vehicle to family members or friends. Some smart keys can also store user preferences, allowing mirrors, seat and steering wheel adjustments, as along with stereo presets can be set automatically when the key is within reach of the vehicle. To make things easier, some smart keys can be programmed to prevent the vehicle from exceeding a speed limit once it has been initiated with that specific key. This is a great way to ensure that new drivers are safe and also beneficial when you have children in the back of the vehicle. Security Traditionally keys were cut from metal to open the ignition. With the advent of smart keys, however, this is no longer the case. Smart keys come with a specific chip that sends signals to the car's antenna. This signal is detected by the vehicle when the driver presses on the handle on the door or trunk release. It is now impossible to lock the keys inside your vehicle. The smart key's signal to your vehicle is encrypted, ensuring that only you can access it. Most models also disable the engine if the car hasn't been started in some time. This feature is especially helpful in case you're in a hazardous area or you have to leave the vehicle for reasons other than at a gas station. There are many systems that also have a backup system for opening and re-starting the car if the battery of the smart key runs out while you are on a ride. The backup system involves inserting the key into a slot, or holding it near a particular area of the cockpit where the energy is transferred to an electric motor. smart key car www.g28carkeys.co.uk include an emergency mechanical key blade hidden in the key which can be used to open the trunk and begin the car if required. Battery Life The majority of newer cars come with keyless entry and push-button start systems which are controlled by a key fob that utilizes proximity technology to connect with the car. These systems rely on a small transmitter that is powered by a coin-sized lithium battery. Like all batteries it will eventually need replacement. Most smart key fob batteries last several years, but that doesn't mean they'll never lose power and stop working at any time. If the fob is dead, you are unable to unlock or start your car even when you hold it near the front door and the key fob's light blinks. It's not unusual for the transmitter inside the smart key to drain the battery. The smart key emits a signal every time you press the button. However, most of the time, it doesn't do anything. The battery of the smart key is sufficient to last for a long time. lock/unlock signals. The fob is also prone to drain the battery If you keep it in close proximity to other devices that emit electromagnetic fields, like phones and computers. These devices emit their own magnetic fields which can interfere with and slow down the fob's transmitter. RepairPal states that the fob might stop working if it is placed too close to the gadgets. Maintenance Smart keys differ from traditional metal keys because they use technology to control the locks of your vehicle as well as perform other functions. It operates by transmitting a signal through antennas that are placed both inside and outside your vehicle. These antennas detect the fob's presence and communicate with the car's computer. The car interprets the signal, permitting you to start or close it without having to use the physical key. New cars are loaded with modern electronic features and the fob has become the hub for many of these functions. The most obvious uses are locking and unlocking your car, remote start and chirping noises to aid in locating your vehicle in a parking lot. Some fobs allow you to save different settings for different drivers, and can even remotely open windows and even the sunroof. The fob itself is a specialized device that has an integrated circuit board, and it could be damaged by repeated use or exposure to heat or cold. The transmitter could break if hit or dropped. The battery contacts could be bent. These problems can be hard to determine and repair. You can use your phone to bypass this problem to see if it works. However it is important to keep a spare key in your pocket in case. You can buy a generic smart key replacement that is up to 70 percent less than OEM keys and comes with a 3-year warranty.