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What is a Smart Key Car Key?

Sometimes referred to as proximity keys as well as key fobs, remote keys, smart keys are used to unlock doors and start engines without the driver having to insert an actual key. They communicate using radiofrequency signals.

Among other things, this helps to protect cars by stopping attempts at hotwiring. Smart keys also transmit unique encrypted signals to stop them from being used by other drivers' vehicles.

Convenience

You can lock and unlock your vehicle without the need to insert the key into the ignition slot. Simply touch the handle on the trunk or door. Many modern vehicles also offer an option that allows you to start your engine remotely. This is particularly helpful if you're bringing groceries into the vehicle, or transporting passengers or equipment.

This technology is designed to help stop theft of vehicles. Instead of sending a single frequency signal like a traditional key fob does it sends out an array of encrypted signals to the car's antennas that are embedded when you walk towards it. How Stuff Works Electronics explains that it is impossible for other cars to receive and responding the same signal.

Certain manufacturers also incorporate an electronic chip in the vehicle that detects the unique fingerprint of every key. This ensures that only authorized users use it. This can be helpful should you lend your vehicle to family and friends.

Some smart keys also store user preferences, so that seat, steering wheel mirror, seat and stereo presets can be automatically set when the key is within the range of the vehicle. Some smart keys may also be set up to prevent the vehicle from exceeding the speed limit once you start the car with that key. This will help keep new drivers safe, and is particularly beneficial for families with young children in the back.

Security

Traditionally keys for cars have been cut from metal and used to unlock the ignition. Smart keys eliminate this need. Smart keys are equipped with an electronic chip that transmits a signal to the car's antenna. The vehicle recognizes this signal when the driver presses the button on the trunk release or door handle. This means it's impossible to lock your keys in your car anymore.

The signal that the smart key sends to your car is encrypted, meaning only the owner has the right to use it. Most models also disable the engine when the vehicle isn't started for just a few minutes. This is especially useful when you're in a dangerous area or have to leave the vehicle for reasons other than at a gas station.

Additionally, if the smart key battery fails during a journey, many systems offer a backup method to open and start the vehicle. The backup system typically consists of placing the key in the slot or putting it in a particular area of the cockpit. This transfers energy to an electric motor. Certain manufacturers have a mechanical key blade that can be used in an emergency situation to open the trunk or to start the vehicle.

Battery Life

Most newer cars come with keyless entry systems and push-button starters. They are controlled by a smart key fob that communicates with your car using proximity technology. These systems use a small transmitter that is powered by a coin-sized lithium battery. As with all batteries, it eventually needs replacement.

Most smart batteries for key fobs last for a long time However, that doesn't mean they'll never go out of power and stop working quickly. A dead key fob means you won't be able to lock or start the car smart key, even if you place it close to the front door, and the key fob light is flashing.

It is not unusual for the transmitter of a smart key drain the battery. The smart key will send a signal every when you press a button. But most of the time it does nothing. A single lock/unlock signal takes up a miniscule amount of the battery power of the fob and, therefore, there's several years worth of signals' worth of battery life in the average smart key battery.

The fob also drains the battery if it is placed in proximity to other devices that emit electromagnetic fields like phones and computers. These gadgets produce their own magnetic field, which can interfere with the fob's transmitter and cause it to run slower. RepairPal reports that the fob could not function if it's placed too close to the gadgets.

Maintenance

As opposed to the traditional car key, a smart key makes use of technology to control the locks on your vehicle as well as perform other functions. It works by transmitting a signal to antennas that are placed both inside and outside your vehicle. They detect the fob's signal and communicate with the car's computer. The car interprets the signal and allows you to begin or close it without having to use the physical key.

The fob is now a central point for numerous electronic features on new automobiles. The most obvious features include locking and unlocking your vehicle, remote starting and chirping noises to assist you in finding your car in a parking spot. Some fobs allow you to store different settings for different drivers, as well as remotely open windows as well as the sunroof.

The fob is an intricate electronic device that has an integrated board that can be damaged if it is utilized too vigorously or exposed to extreme heat or cold. The transmitter can be broken when it is dropped or banged, and the battery contacts can also become bent.

These issues can be difficult to diagnose and repair. It is possible to use your phone to overcome this issue to check if it is working. However, you should always keep an extra key in your pocket in a case. You can buy a generic replacement for the majority of OEM smart keys, which can cost up to 70 percent less and comes with a three-year more than OEM guarantee.