
Known as fobs, keyless entry or smart keys, they were first introduced by Mercedes in 1998. These computer-controlled fobs are capable of carrying out a variety of tasks, such as locking and unlocking the vehicle or starting it.

Safety
A smart key fob constantly communicates with a vehicle via radiofrequency waves. It transmits a low-power message that, when pressed, tells the car to unlock doors and begin its engine. The car is programmed to recognize the unique encrypted code of a particular key fob. This means that if the key fob is stolen, the car will not start.
But a new type of hack can let thieves exploit this communication. Relay attacks use devices that transmit on the same frequency as the key fob. Thieves can put one of these gadgets in a purse or hiding spot to jam the lock command from a distance. How Stuff Works Electronics. This is a risk which could become more frequent as more people switch over to smart keys.
Aside from these security features, a smart key fob can simplify your life by automatically adjusting to the needs of your vehicle. For instance an electronic key fob connected to your smartphone can detect your location and unlock the doors, meaning you don't need to push a button on the remote. It can also sense the moment you leave and automatically lock the vehicle, so you don't have worry about not locking the doors. Many smart key fobs feature an indicator for the battery that warns you when the battery is running low. The majority of models let you replace the battery quickly and easily, without any tools or equipment required.
Convenience
Smart keys do not need to be physically placed in an ignition slot to unlock or start the vehicle. Instead, the user requires it to be on their hands and have it within reach of the vehicle, as explained by the BMW Group. In reality, some smart keys, like the Display Key, have tiny LCD touchscreen in color that allows users to access features like locking, unlocking, and keyless start right from their replacement key for smart car fob without needing to connect with the car's Bluetooth system.
Another way a smart key can help save time for drivers is by automatizing the process of locking their doors after they leave. Consumer Reports says that this feature is available on many automobiles. It can also make it easier for drivers to maneuver into tight spaces without accidentally hitting the door or something else.
Additionally, smart car keys key systems usually do not transmit the same frequency signal repeatedly in order to make them more susceptible to relay attacks, as explained by Open Road Auto Group. Smart keys are specific to each vehicle therefore a stolen vehicle cannot be wired. This makes it extremely difficult for thieves to steal a vehicle.
Security
A few of the most advanced electronic features that are present in modern vehicles are found in the key fob. These gadgets are capable of more than locking and unlocking doors or making chirping sounds to assist motorists locate their car in parking spaces. However, some owners may be unaware of the full capabilities.
For instance, some smart keys can trigger windows that automatically open and sunroof when they are activated. One auto editor from CR entered her Honda Accord to find the windows completely shut and the sunroof fully open. She was grateful for her Smart Key that automatically locked the car.
Some smart keys employ computer-encrypted signals to thwart car burglars, according to How Stuff Works. This technology blocks hotwiring where thieves steal the vehicle's engine control unit (ECM) which is usually found on the front of the engine block. The ECM controls a variety of essential functions, including transmission control and engine power.
Smart keys also come with anti-theft code and a unique security ID code assigned to each key. This can disable the ignition when the wrong key is used. The security ID is a unique code that is transmitted from the ECM to the key once it's put in the ignition, and is confirmed by a sensor in the car.
Maintenance
Smart car key fobs can do more than unlock the door. It can start your engine and activate the brakes and suspension remotely. It also can provide information about your vehicle like fuel level and the temperature of your oil.
Like any piece of electronic equipment, a smart car key programming car Key (http://www.malipoflower.com/) fob requires regular maintenance to function effectively. Modern key fobs have indicators for the battery that inform the driver that it is time to replace the battery. It is easy to replace the battery, and [empty] you don't need any special tools.
In some cases however the smart key may stop working completely. If you suspect this is the cause attempt to reset the smart key by exiting the vehicle and returning inside. This will allow the car to detect that the key fob is still in the vehicle and will allow it to regain its functionality.
If you're unable to connect your fob call a locksmith help. They can reprogram it to ensure that the car recognizes it again and allows you to use all of its features. This is typically cheaper than purchasing a new key and could save you money over the course of time. In some instances, the locksmith can fix an existing key fob in order to be able use it for a new one. This could save you money in the end.