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Vehicle Smart Key Technology

Smart keys in vehicles allow a driver to unlock and start the car by pressing the door handle or putting the key in the pocket. It also allows various other adjustments such as the position of the seat as well as internal temperature settings and mirror positioning.

However, this can also cause security issues.

Security

Smart keys are computerized key fobs which communicate with the vehicle through an embedded antenna to unlock doors and begin the motor. Smart key fobs, as opposed to conventional keys that emit the same frequency each time they're pressed, transmit encrypted signals which are only compatible with the particular car to which they belong. This makes it much more difficult for tech-savvy criminals to spoof or intercept the signal, and then use your key to steal your car.

Mercedes' Keyless Go system for instance, has an internal transponder which identifies the key of the driver. When the smart key replacement Key comes within 1.5 meters of a car it instantly unlocks the tailgate and door, and the engine starts when the key's button is hit.

Additionally some smart keyssuch as those from BMW include individual user settings that allow the driver to adjust the seat, mirrors and the steering wheel's position as well as audio preferences at the touch of one button. They also come with the backup lock, which stops the car from starting without the key in the ignition.

This technology assists drivers from locking their cars, particularly when they have to search their purse or backpack to find keys in a parking lot packed with strangers or on a busy street with high crime rates. Many systems also notify motorists when their keys are not fully charged, however this feature differs by manufacturer.

Convenience

If you're in a hurry to get somewhere the smart key makes entering your car as easy as it can be. You can unlock, lock and start your car by pressing a button on the door handle or the trunk release. Popular Mechanics explains that the key fob can also be used for tracking charging location, charging status, and other information about your vehicle.

The main benefit is that you won't accidentally get locked out. The key fob communicates with an antenna within the vehicle to determine if it's in range. If it's not, the engine will not start. This helps deter would-be thieves who may take your vehicle and sell its parts.

BMW reports that the smart key makes use of rolling codes as well to ward off hacking and cloning. The vehicle's computer detects and validates the code before starting the motor. A majority of systems also have a backup mechanical system that is a key blade that's hidden for styling purposes.

Modern smart keys also know the key that is being used and adjust the car settings accordingly, notes How Stuff Works Electronics. For instance, if you turn on the car holding the key fob in the palm of your hand the windows and sunroof open to let the air in the cabin breathe. You can also set a speed limit that will only apply when the vehicle is started using the selected key, a feature that can be useful when loaning your car to a novice driver.

Battery Life

If you're looking for a way to get more mileage out of your vehicle's smart car key programming 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 disable your smart key fob's ability to send or receiving any radio waves which will increase its battery's life by a significant amount. You can always activate this function by pressing the unlock and lock buttons once more.

Certain smart keys also come with anti-theft features to prevent them from being copied by thieves. Mercedes-Benz smart keys utilize rolling codes to block unauthorized access. The computer in the car examines the code in milliseconds after the smart key is put in. BMW has a similar system with its Display Key, which comes with a small LCD color touchscreen on the smart key for ease of use and enables drivers to lock and unlock their cars without ever removing it from their pockets.

Contact Pop-A-Lock if your need to replace the battery on the smart key fob you have or if you are thinking of purchasing a vehicle with a smart-key. We can replace the battery in any smart key and our mobile locksmiths will help you set the system so that your car can recognize it.

Special Cases

While smart keys aren't safe from theft, they do assist to hinder thieves. Smart keys utilize rolling security codes that prevent hackers, and when put in the ignition, the car's computer checks the code in milliseconds. This technology was invented by Mercedes-Benz and is now utilized by many high-end car brands.

Another useful feature is that the majority of smart key systems will continue to function even if the user has forgotten the key in the trunk or left it in an eatery or lost it on an excursion. Some systems will also notify the driver if the battery is depleted. Some brands offer key covers that are specifically designed for smart keys, to shield the fob from damage.