Vehicle Smart Key Technology

The technology of smart keys in vehicles lets drivers unlock and start their car by simply touching the door handle, or by putting the key into the pocket. It also allows many other adjustments such as seat position as well as internal temperature settings and mirror position.

This could also create security concerns.

Security

Smart keys are key fobs that are computerized that communicate with vehicles through an embedded antenna to unlock doors and activate the motor. In contrast to conventional keys that emit the same frequency signal every time they are pressed, smart key fobs transmit encrypted signals that are specific to the car they belong to. This makes it difficult for thieves who are tech-savvy to fake or intercept the signal and use the key to take your car.

For example, Mercedes' system -known as Keyless Go -- 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 a button on its key.

Some smart keys, like those made by BMW are also equipped with user-specific settings that allow the driver to alter the mirrors, seat and steering wheel's location and audio preferences at the press of a single button. They also have an emergency lock that stops the car from starting if the key is not in the ignition.

This technology assists drivers from locking their car, especially when they are rummaging through their purses or backpack to locate keys in a parking lot filled with strangers or on an area with high crime rates. Many systems will also alert drivers if the key battery is low, but this feature may differ from manufacturer to manufacturer.

Convenience

The smart key is perfect for those on the move and need to get somewhere. By pressing the button on your trunk release or door handle you can open, lock and begin your vehicle. Key fobs can also communicate with your smartphone to track charging locations, charging times and other details regarding the vehicle, as explained by Popular Mechanics.

The main benefit is that you aren't able to accidentally get locked out. The key fob communicates to an antenna inside the vehicle to determine whether it's within range. If it's not in range, the engine will not start. This can deter thieves who would take your vehicle and sell the parts.

BMW reports that the smart key employs rolling codes to prevent hacking and cloning. A computer within the vehicle detects the code and confirms it prior to launching the engine. Most systems also have a backup mechanical system that is an invisible key blade for styling purposes.

How Stuff Works Electronics notes that modern smart keys also detect the key used and adjust the car settings accordingly. For instance, if you start the car while holding the key fob in your hand the windows and sunroof will open to let the air in the cabin breathe. You can also set an upper limit on speed that will only apply when the vehicle is started using the selected key, a feature that could be useful if you loan your vehicle 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 recoding 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 this feature, hold the lock button until you release it and press the unlock button.

This will prevent your smart key fob from having to send or receive any radio waves. This will significantly increase its battery life. You can always activate this feature by pressing the unlock and lock buttons again.

Certain smart key repair keys also come with anti-theft capabilities that protect them from being copied by thieves. For example, Mercedes-Benz smart keys use rolling codes to block unauthorised access to vehicles. The computer in the car is able to verify the code within milliseconds following the smart key is introduced. BMW has a similar system with its Display Key, which comes with a small LCD color touchscreen on the smart key replacement key to make it easier, and allows drivers to lock and 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 fob you have or should you be thinking of buying a car with a smart-key. Our mobile locksmiths can change the battery of any smart Key for cars key and assist you set it up so that your car can recognize it.

Special Cases

Although smart keys aren't safe from theft, they do assist to hinder thieves. Smart keys are designed to deter hackers from hacking into the system. When they are placed in the ignition of the vehicle the computer validates the code in milliseconds. This technology was invented by Mercedes-Benz and is currently used by a number of luxury car brands.

A smart key system will work even if you don't remember the key in your trunk or leave it at the restaurant. Certain systems will notify the driver when the battery is depleted. Some brands offer key covers designed specifically for smart keys that protect the fob from damage.