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Smart Car Key Replacement Smart keys take technology for car keys to the next level. These keys can unlock your doors and even start the car with a click of one button. They may cost more than standard keys, and are more difficult to replace. You can get a replacement smart car key from your dealership or a professional locksmith. Both are alike, but offer different services. Keyless Entry System The keyless entry feature in your car gives you a higher level of security that allows you to open your vehicle and start it without taking the key from your pocket. This is done by transmitting the wireless signal which is received by a receiver that is built inside the car's interior. The receiver activates your car's doors and then starts the engine. The key fob is an electronic chip that has an unique identifier that is linked to the car's receiver. When you turn your key in the ignition the matched pairs signal that you're in the vicinity of the car. The car is then able to open the door or start the engine. If you lose your smart key, it can be a headache to get it replaced. Most of the time, you'll need go to the dealer to show proof of ownership. The dealer can then pair the new key to your vehicle. In some modern vehicles, it is possible to make use of an app to replace the key fob. These systems, often referred to as “keyless entry”, can be used to open and start the car, as well as lock or unlock the doors. This kind of system can be installed as an add-on to your current factory remote or as part of a security package that is custom-designed. It is also used for corporate and apartment building entrances. Transponder Keys This is a key that has an embedded microchip. The chip emits an activation signal when it gets close to ignition. This makes it impossible for anyone else without the original key to start your car, helping thwart auto theft. The microchip has a serial code that authenticates the key. When the key is close to the ignition, the chip emits an low-level radio signal which a specific receiver in the car picks up. It then transmits the signal to the engine controller unit (ECU) in order to begin the car. A key fob is not just a security device but can also be used to unlock your doors, and open the windows and sunroof. It can also be used to disable the immobilizer, which disables the engine of your car when the key is removed from the ignition. Some chip keys are more complex and offer multiple levels of security. For example, GM's VATS keys include an anti-theft mechanism that prevents your car from starting in the event that the wrong key is used. This is accomplished by having a different resistor within the key that has one of the 15 resistances that can be set. If you are unable to locate your smart key or is lost, obtaining an alternative from a dealer might be a good alternative. This can be costly and you may have pay a locksmith or an auto dealer to reprogram the new key. Smart Keys Keys The days of fiddling with the keyhole or pressing a button are long gone. A handful of car manufacturers offer smart keys as an option. They resemble plastic cards, and contain an electronic sensor that connects to a computer in the vehicle. They can unlock your vehicle and open the doors and even start the ignition without having a physical key for your car. The original version of these keys required drivers insert them into a slit through which an onboard computer confirmed the signal. However, the most recent RFID technology allows you to start and open cars without a slot. In fact, you only require the key to be within 1.5 meters of the vehicle. Additionally smart keys will inform you well in advance when the battery is depleted. You can either purchase a new key from a locksmith, or follow the directions in your owner's guide to replace it. If you're using a factory remote smart key it is possible to find out how to purchase a replacement one by searching your dealer's inventory or calling the dealer. If you need an additional key, you can buy a compatible aftermarket key from a car parts retailer. They will usually connect it to your current key to avoid a large dealer charge. You can use it as a backup in the event that you lose your primary key. Smart Key Replacement Many of the latest vehicles come with smart keys that unlock doors and even start the engine. They also perform other functions without a driver needing to physically touch or hold their key fob. The keys communicate with antennas that detect and distinguish the exact signal from the key fob. The primary benefit of an electronic car key is its convenience. It eliminates the need to fumble around with keys every time you exit the driveway. This can cause drivers to lock themselves out of the vehicle. smart fortwo key programming makes the process of entering and starting the vehicle a lot more swiftly since it eliminates the need to locate and press buttons on the traditional remote. A smart key also provides added security. While other key fobs emit the same frequency signal as yours, smart keys send out a unique encrypted signal, making it more difficult for thieves who are tech-savvy to pick up and use the same signal. However, just like any other type of car keys smart keys can break down or get lost. A locksmith can replace yours. They can reprogram a new device to connect to the car's computer so that you can lock it and then start it. All they need is a replacement battery. Open the smart key fob, then remove the battery that was in it. Then, insert the new one into the same holder, and match up each edge with the fob to ensure it's in a straight line at all points.