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Vehicle Smart Key Technology

Smart keys in vehicles allow drivers to unlock and start the car simply by touching the door handle or putting the key in the pocket. It also allows for various other adjustments, including the position of the seat and internal temperature settings as well as mirror positioning.

This could also create security worries.

Security

Smart keys are key fobs that are computerized and communicate with vehicles via one of the antennas built into the car to open the doors and to start the engine. Smart key fobs, unlike traditional keys that emit the same frequency each time they're pulled, transmit encrypted signals which are only compatible with the vehicle to which they belong to. This makes it much more difficult for tech-savvy thieves to spoof or intercept the signal and use the key to take your car.

Mercedes' Keyless Go system For instance, it has an internal transponder that can identify the driver's keys. The Smart Key automatically unlocks and opens the doors and the tailgate when it is within 1.5 meters. It also begins the engine by pressing the key.

Some smart keys, like the ones made by BMW additionally have user-specific settings. These allow the driver to alter the seat, mirrors and steering wheel's location and even the audio settings with the click of a button. They also come with an emergency lock that prevents the vehicle from starting without the key in the ignition.

This technology protects drivers from getting their car locked accidentally especially when looking in backpacks or purses to find keys in a parking lot with strangers or on a busy street where crime is high. Some systems will also notify drivers if the key battery is not fully charged, though this feature can vary by the manufacturer.

Convenience

If you're in a hurry get to a place the smart key makes getting into your vehicle as easy as it can be. By pressing the button on your trunk release or door handle, you can unlock, lock and open your vehicle. Popular Mechanics explains that the key fob can also be used for tracking charging locations, charging, and other information about your vehicle.

You don't want to accidentally lock your keys inside the car. The key fob connects to an antenna inside the vehicle to determine if it is within range. If it's not, the engine won't start. This will deter thieves from taking your vehicle and then selling its parts.

BMW reports that the smart key employs rolling codes in order to ward off hacking and cloning. The computer in the vehicle can recognize and verify the code before starting the motor. Many systems also have a backup mechanical system in the form of an invisible key blade to serve as a styling tool.

How Stuff Works Electronics notes that modern smart keys can also detect the key in use and adjust vehicle settings in accordance with the key's use. If you start the vehicle while holding the key in your hands, for example, the windows and the sunroof will open to allow air circulation to the interior. You can also set a speed limit which will only be used when the car is powered by the chosen key. This feature can be useful when you lend your car to someone with no experience.

Battery Life

If you're looking for a way to get more mileage out of your vehicle's smart key, or just want to make sure it won't die during a trip to the grocery store, you can activate an auto manufacturer-specific feature called Power Saving Mode. To activate it simply press and hold the lock button while pressing the unlock button.

This will block your smart key fob to send or receive any radio waves. This will greatly extend its battery life. It is possible to reactivate the function by pressing the unlock and lock buttons again.

Certain smart keys also have anti-theft capabilities that protect them from being copied by thieves. Mercedes-Benz smart fortwo key Programming key uses rolling codes to prevent access by anyone who is not authorized to use it. The car's computer checks the code milliseconds after the smart key is inserted. BMW offers a similar system with its Display Key, which comes with a small LCD color touchscreen on the smart fortwo key fob key to make it easier and lets drivers lock or unlock their vehicles without ever taking it from their pockets.

Call Pop-A-Lock if you need to replace the battery on the smart key for cars key fob you have or in the event that you are thinking of purchasing a car that has a smart-key. Our mobile locksmiths can replace the battery of any smart car key fob programming key and also help to set it up so that your car can recognize it.

Special Cases

Although smart car key recoding keys aren't security-wise, they can be used to deter thieves. Smart key fobs use rolling security codes to avoid theft, and when placed in the ignition, the car smart key replacement's computer can verify the code within milliseconds. Mercedes-Benz developed this technology, which is currently used by luxury car manufacturers.

Another great feature is that most smart key systems will continue to operate even if the user has forgotten the key in the trunk or left it in a restaurant or lost it during a hike. Some systems will also notify the driver when the battery is depleted. Certain brands have key covers specifically designed for smart keys that keep the fob protected from damage.