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What Can a Smart Car Key Fob Do For You? Also known as fobs, keyless entry or smart keys, they were introduced by Mercedes in 1998. Key fobs that are controlled by computers perform many tasks, including locking and unlocking cars as well as launching it. They operate by broadcasting an encrypted stream. This makes them more receptive to hackers with a technological edge. Safety A smart key fob constantly communicates with a vehicle using radiofrequency signals. It sends a low-power signal that, when pressed it, prompts the vehicle unlock doors and begin the engine. The car can recognize the unique encrypted code from a particular keyfob. This means that even if the key fob is stolen, it cannot be used to start the car. But a brand new type of hacking could enable thieves to gain access to that communication. Relay attacks are carried out using devices that transmit at the same rate as the key fob. How Stuff Works Electronics says that thieves could put one of these devices in an unnoticed pocket or a hidden location to stop the key fob's lock command remotely. It's a concern that is likely to become more prevalent as more motorists switch to smart keys. A smart key fob isn't just a security device but can also simplify your life by automatically taking care of the requirements of your vehicle. A key fob that is connected to your smartphone, for instance can sense your presence and unlock the doors so that you don't need to press a remote button. It could also detect that you're leaving the vehicle and automatically lock it, so that you aren't tempted to forget to lock the doors. Many smart key fobs have an indicator for the battery that warns you when the battery is running low. The majority of models let you replace the battery quickly and easily, without any tools or equipment required. Convenience Unlike a traditional metal key Smart keys do not require physical inserting into the ignition slot to unlock or start the vehicle. BMW Group explains that the driver just needs to bring the key within the range of the car. Certain smart keys, such as the Display Key, feature small LCD touchscreen that gives drivers to access features such as locking, unlocking and keyless starting directly from their key fob without the need to connect the Bluetooth system of the car. A smart key can also help drivers save time by automating the closing of their car doors when they leave. This feature is present in a variety of automobiles, according to Consumer Reports, and can also help maneuver into tight parking spots without accidentally squeezing something the person. Open Road Auto Group explains that smart key systems don't transmit the same frequency signal in a series of in order to make them more susceptible to relay attacks. Smart keys are distinct to each vehicle, so a stolen vehicle can't be wired. This technology makes it extremely difficult for thieves to steal a vehicle. Security Some of the latest electronic features in today's modern automobiles are included in the key fob. These devices do much more than simply unlock and lock doors, or make chirping sounds that assist drivers in finding their vehicle in a parking lot however, some owners might not be aware of all that these key fobs do. For instance, certain smart keys can turn on the auto windows of a car and sunroof when they are pressed. One auto editor in CR entered her Honda Accord to find the windows all down and the sunroof open. This is one of the reasons she was thankful for her Smart Key, which locked the car automatically. According to How Stuff Works, some smart keys utilize computer-encrypted signals to stop car thieves. This technology blocks hotwiring in which thieves steal the vehicle's engine control unit (ECM), that is usually located on the front of the engine block. The ECM controls many vital functions, including engine power, transmission control, and other functions. Other technologies used in smart keys include anti-theft coding and an individual security ID assigned to each key. This can turn off the ignition if it's not the correct one. The security ID is a specific code that's sent from the ECM to the key when it's inserted into the ignition and then verified by a sensor inside the car. Maintenance Smart car key fobs do more than unlock the door. It can remotely start your engine, operate the brakes and suspension and even start your vehicle. It can also provide details about your vehicle, including fuel level and oil temperature. smart forfour key replacement , as any other electronic device requires regular maintenance to work correctly. The majority of modern key fobs have indicators for batteries that inform the driver when the battery is low. It's simple to replace the battery and you don't require special tools. In some instances the smart key might stop working completely. If you suspect that this is the cause attempt to reset the smart key by exiting the vehicle and returning inside. This will enable the car to understand that the key fob is still in the vehicle and let it to be used again. If you can't get your fob to function, contact a locksmith to assist. They can reprogram your fob so that it is recognized by your car and you are able to use all its features. This is typically cheaper than buying a brand new fob and could save you money over time. In some cases, a locksmith can repair an existing key fob to be able to use it as a replacement. This can save you money in the end.