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What is a Smart Key Car Key? Differently referred to as keys that are in proximity, key fobs or remote keys, smart keys can be used to unlock doors and start engines without the driver needing to insert an actual key. They communicate with each other through radiofrequency signals. This helps keep cars secure by preventing hotwiring. Smart keys also transmit unique encrypted signals to block them from being used by other vehicles owned by drivers. Convenience You can lock and unlock your vehicle without inserting the key into the ignition slot. Simply tap the handle on the door or trunk. A lot of modern cars have a feature which allows you to start your car wirelessly. This is especially useful if you are bringing groceries in as well as transporting passengers or equipment. This technology is intended to prevent vehicle theft. Smart keys send out encrypted signals instead of a single frequency, as a regular keyfob does. What does this mean? Stuff Works Electronics explains that this stops other vehicles from receiving and responding to the same signal. Additionally, some companies incorporate a computer chip into the vehicle that can recognize the unique fingerprints of each key, which makes sure that only authorized drivers use it. This is particularly useful when you lend your car to family and friends. Some smart keys also store user preferences so that the mirrors, seats and steering wheel adjustments, as also stereo presets may be set automatically when the key is within reach of the vehicle. To make life easier, certain smart keys can be set to prevent the vehicle from exceeding a speed limit when it is started using that specific key. This is a great method to protect new drivers and also an excellent idea when you have children in the back of the vehicle. Security Traditionally keys for cars have been made from metal and used to unlock the ignition. Smart keys eliminate this need. Smart keys have a special chip which sends an antenna signal to your car. This signal is then acknowledged by the vehicle when the driver presses a button on the door handle or trunk release. It is now impossible to lock the keys inside your vehicle. The smart key's signal to your vehicle is encrypted so that only you are able to use it. In addition, most models will turn off the engine if it was not launched in the past few minutes. This feature is particularly helpful when you are in a dangerous area or you have to get out of your vehicle for any reason. There are many systems that also have the option of a backup system to open and starting the car if the battery of the smart key goes out while riding. The backup system typically consists of putting the key in the slot or putting it near a specific area of the cockpit that transfers energy to an electric motor. Some manufacturers also have an emergency mechanical key blade hidden inside the key that can be used to open the trunk and begin the car if required. G28 have keyless entry as well as push-button starting systems, controlled by a smart 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. It will eventually require to be replaced as with any other battery. The majority of smart batteries for key fobs last for several years however, 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 even if you hold it up close to the front door. It is not uncommon to see the transmitter of a smart key to drain the battery. It transmits a signal to the car each time you touch one button, however most of the time the smart key does nothing. A single signal to lock or unlock takes only a tiny amount of the battery power in the fob and that's many years of signals' worth of battery life in an average smart key battery. The fob is also prone to drain the battery If you keep it in close proximity to other devices emitting electromagnetic fields, like phones and computers. These devices create their own magnetic fields, which can interfere with the fob's own transmitter, causing it to operate more slowly. In certain cases, the fob may even be unable to function when the fob is placed too close to these devices, according to RepairPal. Maintenance Smart keys differ from traditional metal keys in that they use technology to control the locks of your vehicle in addition to performing other functions. It operates by sending a signal to the antennas located inside and outside your vehicle. These antennas detect the fob's signals and communicate with the car's computer. The car interprets the signal and allows you to open or start it without the physical key. The fob is now a hub of many electronic features in new vehicles. The most obvious features are locking and unlocking your car, remote starting and chirping noises to aid in locating your vehicle in a parking area. Some fobs allow you to store specific settings for various drivers and remotely open windows and sunroofs. The fob is a complicated device with an integrated circuit board, and it can be damaged when exposed to heat or cold. The transmitter can be broken in the event of it being hit or dropped and the battery contacts may also be bent. These issues can be difficult to pinpoint and solve. Try using your phone to solve the issue and see if this works however, it's always a good idea to keep a spare key in your pocket, just in case. You can buy an equivalent replacement for the majority of OEM smart keys that cost up to 70 percent less and comes with a three-year, better-than-OEM guarantee.