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Vehicle Smart Key Technology

The smart key technology found in vehicles enables drivers to unlock and start their car by simply pressing the door handle or by putting the key into the pocket. It also allows a variety of other adjustments like seating positions and temperature settings inside the car, stereo presets and mirror positions.

This can also cause security worries.

Security

Smart keys are key fobs that are computerized that communicate with the vehicle via an embedded antenna to unlock doors and activate the motor. Smart key fobs, unlike traditional keys, which emit the same frequency every time they're pressed, send encrypted signals which are only compatible with the particular car to which they belong to. This makes it much more difficult for thieves with the latest technology to spoof or intercept the signal and use the key to steal your car.

Mercedes' Keyless Go system, for example, has an internal transponder that identifies the key of the driver. The Smart Key automatically unlocks and opens the doors and the tailgate when it is within 1.5 meters. It also starts the engine by pressing the key.

Some smart keys, like those from BMW additionally have user-specific settings. These allow users to alter the seat, mirrors, steering wheel position, and even the audio settings with the click of a button. They also come with a backup lock that blocks the vehicle starting without the key.

This technology stops drivers from getting their car locked accidentally, especially when searching in the bag or purse for keys on an open parking lot with strangers or on a busy street where crime is high. Many systems also notify drivers when their keys are in danger of being depleted, though this feature varies by manufacturer.

Convenience

If you're in a hurry to get somewhere, the smart key makes getting into your vehicle as simple as it can be. You can unlock, lock and start your car simply by pressing the door handle or the trunk release. The key fob will interact with your phone to track charging, location and other data regarding the vehicle, as explained by Popular Mechanics.

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

The smart car key recoding (visit Pediascape) key also makes use of rolling codes to protect against hacking attempts and cloning, says BMW. The computer inside the vehicle recognizes the code and confirms it prior to starting the engine. The majority of systems have a mechanical backup system that is an invisible key blade.

Modern smart keys also detect the type of key being used and adjust the settings of the vehicle accordingly, notes How Stuff Works Electronics. If you turn on the vehicle while holding the key in your hands, for example windows and the sunroof will open to ventilate the interior. You can also set a speed limit that will only be applicable when the vehicle is started using the selected key, a feature that could be helpful when lending your car to a new driver.

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, press the lock button until you release it and press the unlock button.

This will prevent your smart key fob from transmitting or receiving any radio waves and will increase the battery's life by a significant amount. It is possible to reactivate the function by pressing the unlock and lock buttons again.

Certain smart car key repair keys also come with anti-theft features to prevent them from being copied by thieves. For instance, Mercedes-Benz smart keys use rolling codes to block unauthorized access to vehicles. The car's computer is able to verify the code within milliseconds following the smart key is introduced. BMW uses a similar method with its Display Key, which has an LCD touchscreen on the replacement smart key key for ease of use, and enables drivers to lock and unlock their vehicles without ever taking the key from their pockets.

Contact Pop-A-Lock if your need to replace the battery in your smart key fob considering buying a car with a smart-key. Our mobile locksmiths can change the battery on any smart car key case key and also help you set it up so that your car can recognize it.

Special Cases

Smart keys aren't 100% theft-proof, but they assist in preventing thieves. Smart keys employ rolling security codes to avoid theft, and when placed in the ignition, the car's computer verifies the code within milliseconds. This technology was invented by Mercedes-Benz and is currently used by a variety of high-end car brands.

A smart key system will continue to function even if you lose the key in your trunk or leave it in a restaurant. Some systems will also alert the driver if the battery is not fully charged. Some brands offer keys with covers specifically designed for smart keys to guard the fob from damage.