The 10 Scariest Things About Smart Car Key Fob Replacement

What Can a Smart Car Key Fob Do For You?

Mercedes introduced the first fobs in 1998. They are also referred to as smart keys, keyless entry or keyless entry fobs. These computer-controlled fobs are capable of performing a variety of functions like locking and unlocking the vehicle or the car's start-up.

They work by transmitting an encrypted, rolling message. This protects them from hackers with a technological edge.

Safety

A smart key fob continuously communicates with the vehicle through radiofrequency signals. It transmits a low power signal that, when pressed, tells the vehicle to open doors and begin the engine. The car recognizes the unique encrypted code from a specific key fob. This means that if a key fob is stolen, the car can't start.

A new vulnerability allows thieves to exploit this method of communication. Relay attacks use devices that transmit at the same frequency as the key fob. How Stuff Works Electronics says that thieves can put one of these gadgets into the pocket or hidden area to stop the key fob's lock command remotely. This is a risk which could become more frequent as more people change to smart keys.

Apart from these security features, a smart key fob can simplify your life by automatically attending to the needs of your vehicle. For example, a key fob that's linked to your smartphone can detect your location and unlock the doors, so it's not necessary to press the remote button. It can also sense that you are leaving the car and then automatically lock it, so you will not forget to lock the doors. A lot of smart key fobs also have an indicator of the battery that tells you ahead of time if the battery is running low. Most models allow you to replace the battery quickly and conveniently without any special tools.

Convenience

As opposed to a traditional metal key Smart keys do NOT require physical inserting into the ignition slot in order to unlock or start the car. BMW Group explains that the driver just needs to bring the key within the range of the car. In reality, certain smart keys, like the Display Key, have small LCD touchscreen with color that allows drivers to access features such as locking, unlocking, and keyless start directly from their key fob, without having to connect to the car's Bluetooth system.

Another way a smart key could help save time for drivers is by automatizing the process of locking their doors after they leave. Consumer Reports says that this feature is offered on a number of vehicles. It can also make it easier for drivers to maneuver into tight spaces without accidentally hitting someone or something.

Furthermore, smart key systems do not typically transmit the same frequency signal repeatedly, as this could make them more vulnerable to relay attacks, according to Open Road Auto Group. Therefore the vehicle that is stolen cannot be connected to a hotwire if equipped with a smart key replacement cost key as the encrypted signal that the key fob transmits is unique to each vehicle. This technology makes it extremely difficult for thieves to steal cars.

Security

The latest cars are equipped with more high-tech electronic features than ever before, and some of them are contained inside the key fob. These gadgets are capable of much more than locking and unlocking doors, or making chirping sounds to help drivers locate their car in parking lots. However, some owners may be unaware of the full capabilities.

For example, some smart keys are able to activate a vehicle's automatic windows and sunroof when activated. One CR auto editor entered her Honda Accord to find the windows completely shut and the sunroof wide open. She was grateful for her Smart Key that automatically locked the car.

According to How Stuff Works, some smart keys make use of computer-encrypted signals to prevent car thieves from stealing. This technology can prevent hotwiring in which thieves steal a vehicle's engine controller module (ECM), usually located at the front of the engine. The ECM is responsible for a variety essential functions, including transmission control and engine power.

Smart keys also have anti-theft code and a unique ID security code assigned to each key. This can disable ignition when the wrong key is used. The security ID is a code that is transmitted from the ECM to the key when it's inserted in the ignition and confirmed by a sensor in the car.

Maintenance

A smart car key fob does more than just unlock your door. It can start your engine and activate the suspension and brakes remotely. It can also provide information about your vehicle, including fuel level and oil temperature.

Like all electronic equipment the smart car key fob requires regular maintenance to function correctly. 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 you don't need special tools.

In some cases the smart key might cease to function completely. If you suspect this is the issue try resetting the smart key by removing the vehicle and returning inside. This will allow the car to detect that the key fob is still inside the vehicle, and allow it to function again.

Contact a locksmith if you have trouble getting your key fob to function. They can reprogram it to ensure that the car can recognize it again and allows you to use all of its features. This is usually cheaper than buying a brand new fob and can save you money over time. In some cases, the locksmith can repair an existing key fob in order to be able to swap it for a new one. This can save you more money in the long run.