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What is a Smart Key Car Key?

Smart keys are also known as proximity keys or key fobs. They work to unlock doors as well as start engines without having to insert a physical key. They communicate by radiofrequency signals.

Among other things, this helps to protect cars by blocking attempts at hotwiring. Smart keys broadcast unique encrypted signals that keep access to other vehicles.

Convenience

You can lock and unlock your vehicle smart key without needing to insert the key into the ignition slot. Simply touch the handle of the door or trunk. A lot of modern cars include a feature that permits you to start your car from a distance. This is especially useful if you're bringing groceries into the vehicle or transporting passengers, or equipment.

This technology is designed to stop theft of vehicles. Instead of transmitting one frequency signal like a traditional key fob does smart keys send out a series of encrypted signals to the car's embedded antennas when you are near it. What does this mean? Stuff Works Electronics explains that this stops other vehicles from receiving and responding to the same signal.

Furthermore, 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 in the event that you lend your car to family and friends.

Some smart keys can also store user preferences, so that seat, mirrors, and steering wheel adjustments, as also stereo presets may be set automatically when the key is within reach of the vehicle. To make things easier, some smart keys can be programmed to stop the car from exceeding a particular speed limit once it has been started with that particular key. This is a great method to ensure that new drivers are safe and it's beneficial if you have children in the back.

Security

Traditionally keys for cars were made from metal and used to unlock the ignition. With smart key technology however, this is no longer necessary. Smart keys are equipped with a special chip that sends signals to your car's antenna. The signal is subsequently 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 in your vehicle.

The signal that the smart key transmits to your car is encrypted, meaning that only the owner of the car can use it. In addition, most models will disable the engine in the event that the vehicle hasn't been started in the last few minutes. This feature is especially helpful when you're in a dangerous area or you have to leave the vehicle for reasons other than at a petrol station.

A lot of systems also have backup systems for opening and starting the car if the battery of the smart keys runs out while you are on a ride. The backup system involves inserting the key in an opening, or keeping it near a particular area in the cockpit in which energy is transferred to an electric motor. Some manufacturers also have an emergency mechanical key blade in the key that could be used to open the trunk and start the car should it be needed.

Battery Life

Many newer cars have keyless entry systems and push-button starters. They are controlled by a smart fob that communicates with the car through proximity technology. These systems are powered by a small transmitter that is powered by a coin-sized lithium battery. It will eventually need to be replaced, just like any other battery.

Most smart batteries for key fobs last several years however, that doesn't mean they can't lose power and stop working suddenly. If the fob battery is dead, you won't be able to unlock or start your car in the event that you put it close to the front door.

It is not unusual for the transmitter of a smart key to drain the battery. It sends a signal back to the car every time you push a button, but most times, the smart key does nothing. One single lock/unlock button takes up a miniscule amount of the battery power in the fob which means that there's many years of signals' worth of battery life for the average smart key battery.

The fob will also drain the battery if placed near other devices that emit electromagnetic field, such as computers and phones. These gadgets produce their own magnetic fields, which can interfere with the fob's own transmitter and cause it to work slower. In some cases, the fob may even stop working altogether when it is placed too close to these devices, according to RepairPal.

Maintenance

Unlike the traditional metal car key, a smart one utilizes technology to control the locks on your vehicle, and also perform other functions. It works by sending a signal from the fob to antennas within and outside the vehicle. The antennas pick up the signal and communicate with your car key cutting and programming cost's computer. The car interprets the signal permitting you to start or close it without having to use the physical key.

new smart car key cars are packed with advanced electronic features, and the fob has become an interface for many of these functions. The most obvious uses include locking and unlocking your car, remote start and chirping sounds to help you locate your car in a parking spot. Some fobs allow you to save specific settings for different drivers, and also open windows remotely and sunroofs.

The fob is an elaborate electronic device with an integrated board. It can be damaged if placed in a position that is too harsh or exposed to extreme heat or cold. The transmitter could be damaged if it is dropped or banged, and the battery contacts can also become bent.

These issues can be challenging to identify and repair. You could try using your smartphone to get around the issue and see if that works however, it's a good idea to keep a spare key in your pocket, just in case. You can buy an ordinary smart forfour key key replacement that is up to 70% less than OEM keys and comes with a three-year warranty.