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What Can a Smart Car Key Fob Do For You? Known as fobs, keyless entry or smart keys, they were first introduced by Mercedes in 1998. These computer-controlled fobs are capable of performing various tasks, such as locking and unlocking the car, or the car's start-up. They function by broadcasting an encrypted and rolling signal. This makes them less vulnerable to cyber-savvy thieves. Safety A smart key fob constantly communicates with vehicles through radiofrequency signals. It transmits a low power signal that, upon pressing, tells the vehicle to open doors and start the engine. The car is programmed to recognize the unique encrypted code of a particular key fob. This means that even if the key fob is stolen, it cannot be used to start the car. A new hack allows thieves to exploit this type of communication. Relay attacks utilize devices that transmit at the same frequency as the key fob. How Stuff Works Electronics says that thieves could put one of these gadgets into an unnoticed pocket or a hidden location to stop the key fob's lock command remotely. It's a concern that could become more common as more people switch to smart keys. Aside from these security features, a smart key fob can simplify your life by automatically taking care of the needs of your vehicle. For instance an electronic key fob linked to your smartphone could detect your presence and then unlock the doors, so you don't have to press the remote button. It can also sense when you're leaving the car and auto-lock the car, meaning you don't need to worry about not locking the doors. Many smart key fobs include a battery indicator that warns you well in advance when the battery is running low. Also, replacing the battery in most models is a straightforward and easy process that does not require any special tools. Convenience Unlike a traditional metal key Smart keys do not require physical insertion into the ignition slot in order to unlock or start the car. Instead, the user needs to have it in their possession and bring it within the range of the vehicle, as described by the BMW Group. In reality, certain smart keys, such as the Display Key, come with an extremely small LCD touchscreen in color that allows users to access features like locking, unlocking, and keyless start directly from their key fob without needing to connect to the car's Bluetooth system. A smart key can also help drivers save time by automating the locking of their doors after they leave. Consumer Reports says that this feature is offered on a number of automobiles. It also makes it easier for drivers to maneuver into tight spaces without accidentally hitting the door or something else. Open Road Auto Group explains that smart key systems do not transmit the same frequency signal over and over in order to make them more vulnerable to relay attacks. Therefore a stolen vehicle can't be connected to a hotwire if equipped with a smart key since the encrypted signal that the key fob transmits is unique to each car. This technology makes it incredibly difficult for thieves to steal a vehicle. Security Modern cars have more advanced electronic features than ever before, and many of them are housed inside the key fob. These gadgets are capable of more than locking and unlocking doors, or making chirping sounds to assist motorists locate their car in parking areas. However many owners are unaware of the full capabilities. Certain smart keys, for instance, will activate the automatic windows and sunroofs on an automobile when they are pressed. One CR auto editor entered her Honda Accord to find the windows all down and the sunroof fully open. That's one of the reasons she was grateful for her Smart Key, which locked the vehicle automatically. According to How Stuff Works, some smart keys use computer encrypted signals to protect against car thieves. This technology blocks hotwiring, which thieves steal the engine controller module (ECM) typically located in front of the engine. The ECM manages many essential functions such as engine power, transmission control, and many more. Other technologies in smart keys include anti-theft encryption and a security ID unique to each key. This could disable the ignition in the event that it's not the correct one. The security ID is a code that is transmitted by the ECM from the key to the ignition, followed by verification with a sensor in the car. smart car key not working do more than unlock the door. It can remotely start your engine, turn on the brakes and suspension and even start your vehicle. It also provides information about your car, like the level of fuel and the oil temperature. A smart car key fob, like every other electronic device requires regular maintenance in order to work efficiently. Key fobs that are modern have indicators for the battery that alert the driver when the battery is low. It is easy to replace the battery and you don't need special tools. In certain situations however, a smart key could stop functioning completely. If you suspect this is the case try resetting the smart key after leaving the vehicle and coming back inside. This will help the car recognize that the fob is still in place and allow it to return to normal operation. Contact a locksmith if you are not able to get your key fob working. They can reprogram the fob so that it can be recognized by the car and you can make use of all its features. It's typically more affordable to do this than buy the new fob for your key, and it could save money in the long run. In some instances locksmiths can fix a fob that is already in use in order to be used to make a new key. This could save you money in the end.