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Vehicle Smart Key Technology

The smart key technology found in vehicles lets drivers unlock and start their vehicle by simply touching the door handle or putting the keys in the pocket. It also enables a range of other adjustments, like seating positions and internal temperature settings, stereo presets and mirror positions.

However, it could also cause security issues.

Security

Smart keys are computerized key fobs which communicate with the vehicle via an embedded antenna to unlock doors and start the motor. Smart key fobs, as opposed to traditional keys that emit the same frequency every time they're pressed, send encrypted signals which are only compatible with the specific car to which they belong to. This makes it harder for tech-savvy thieves to fake or intercept the signal and use the key to take your car.

Mercedes' Keyless Go system for instance, comes with 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 allows you to start the engine by pressing a button on its key.

Certain smart keys, such as those from BMW additionally have user-specific settings that permit users to alter the mirrors, seat and steering wheel's position and audio preferences at the touch of a single button. They also come with an emergency lock that stops the car from starting without the key in the ignition.

This technology prevents drivers from getting their car locked accidentally especially when looking in the bag or purse for keys on parking lots with strangers or a busy street where crime is high. Many systems will also inform drivers if the key battery is not fully charged, though this feature can vary by manufacturer.

Convenience

If you're in a hurry get somewhere, the smart key makes getting into your car as simple as possible. By pressing the button on the trunk release lever or door handle, you can lock, unlock and start your vehicle. Popular Mechanics explains that the key fob can also be used to monitor charging, location, and other information about your vehicle.

The main benefit is that you won't accidentally be locked out. 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 not start. This will stop thieves from stealing your vehicle and selling its parts.

BMW reports that the smart key makes use of rolling codes, as well as to ward off hacking and cloning. The computer inside the vehicle recognizes and verifies the code before starting the motor. Most systems have a mechanical backup system that is a hidden key blade.

How Stuff Works Electronics notes that modern smart keys also detect the keys when it is in use and adjust the vehicle settings accordingly. For instance, if turn on the car while holding the key fob in your hands, the windows and sunroof can be opened to let the air in the cabin breathe. You can also set the speed limit to only be applicable when the vehicle is started with the selected key, which can be useful when loaning your car to an inexperienced 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 do this make sure you press and hold the lock button while pressing the unlock button.

This will block your smart key fob from transmitting or receiving any radio waves that could extend its battery's lifespan significantly. You can always activate the function by pressing both the unlock and lock button again.

Some smart keys have anti-theft features to prevent them from being copied by thieves. Mercedes-Benz smart keys utilize rolling codes to prevent unauthorised access. When the smart car spare key key is put in the ignition, a computer inside the car confirms the code in milliseconds before even starting the engine. BMW has a similar system with its Display Key, which comes with a small LCD color touchscreen on the Smart Car Key Programming key to make it easier and allows drivers to lock or unlock their cars without ever removing it from their pockets.

If you're considering purchasing an automobile with a smart key, or require the battery in your smart key replaced, call Pop-A-Lock to get a quick and easy service. Our mobile locksmiths can replace the battery of any smart key and help to set it so that your car can recognize it.

Special Cases

While smart keys aren't secure against theft, they can help to hinder thieves. Smart keys are designed to prevent hackers from hacking into the system. When they are inserted into the ignition of the car the computer validates the code in milliseconds. Mercedes-Benz invented this technology, which is now used by luxury car manufacturers.

A smart key copy key system will continue to function even if you lose the key in your trunk or leave it at an establishment. Some systems will alert the driver when the battery is not fully charged. Certain brands have key covers specifically designed for smart keys. They ensure that the fob is protected from harm.