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Smart Car Key Replacement Smart keys take car key technology to the next level. These types of keys can unlock your doors and start the car with a touch of a button. They can cost more than standard keys, and they are harder to replace. You can obtain a replacement smart car key at your dealership or a professional locksmith. Both are similar but offer different services. Keyless Entry System The keyless entry system in your car is a sophisticated security feature that lets you unlock and start your car without taking the key from your pocket. This is done by transmitting the wireless signal which is received by a device built into the interior of your car. The receiver then opens your car's doors and then starts the engine. The key fob is an electronic chip that has an identifier unique to it and is linked to the receiver of your car. When you turn your key into the ignition the matched pairs signal that you are near the car. The car can then open the door or begin the engine. It could be a headache to get your smart key replaced if you lose it. You'll often have to visit your dealer in order to verify ownership. The dealer can then pair an additional key to your vehicle. Certain vehicles of the present allow you to use an app for your smartphone to replace the key fob. These systems are referred to as “keyless entry” and can be used to open and begin the car, as well for locking and unlocking doors. This type of system is available as an upgrade to your factory remote or as a part of a custom security package. This system is also popular in apartment complexes and corporate buildings. Transponder Keys This is a key that has embedded microchip. The chip emits an activation signal when it gets close to ignition. This makes it difficult for anyone to start your vehicle without the original keys, which helps to prevent the theft of your vehicle. The microchip is equipped with a digital serial number that authenticates the key to the vehicle. When the key is located close to the ignition, the chip emits an low-level radio signal which a special receiver inside the car detects. It then sends the signal to the engine controller unit (ECU) in order to get the car started. Key fobs are not only a security feature however, it can be used to unlock your doors, and open the windows and sunroof. It can also be used to disable your immobilizer which blocks the engine of your vehicle when the key is taken out of the ignition. Certain keys with chip technology are more complex and offer different levels of security. The VATS keys of GM have an anti-theft feature which stops the car from starting if you use the wrong key. This is accomplished through a resistor with one of 15 preset resistors within the key. A replacement smart key from a dealer may be the best option if you cannot locate your smart keys or when they've been stolen. It can be expensive and you might have to pay a locksmith a car dealer to reprogram the new key. Smart Keys Keys The days of fumbling with the keyhole or pressing a button are long gone. A few car manufacturers are now offering smart keys as an option. They're shaped like plastic cards and have an electronic sensor that connects to the computer in your vehicle. They can unlock your car, unlock the doors, and turn on the ignition, all with no physical key. The original version of these keys demanded that drivers insert them into a slit where an onboard computer verified the signal. The most recent RFID technology allows cars to be opened and started without having a slot. In fact, you require the key to be within 1.5 meters of the vehicle. Smart keys will also inform you when the battery is low. You can buy a new key from a locksmith, or follow the steps in your owner's guide to replace it. If you have an original factory remote smart key you can learn the procedure to get a replacement one by searching the dealer's inventory or calling the dealer. You can also purchase a compatible aftermarket car keys from a parts retailer if you need one as an emergency replacement. They can usually join it with your current key to avoid a high dealer charge. It can be used as a backup in the event that you lose your primary key. new smart car key G28 of the latest vehicles come with smart keys that unlock doors and even start the engine. They also perform other functions without a driver having to physically touch or hold their key fob. These keys work by communicating with antennas in the car which detect and recognize a specific signal from the key fob. The convenience of having a smart key for a car is the main benefit. It removes the need to fiddle about with keys as you exit the driveway. This can result in drivers locking themselves outside. It also makes stepping into and starting the vehicle much faster by not having to find and push buttons on the traditional remote. Another benefit of a smart key is its added security. While other keys can emit the same frequency signal as yours, smart keys send out an encrypted signal that is unique, making it much more difficult for thieves with a technological edge to detect and use an identical copy of your car's signal. However, just like other kind of car key, smart keys can fail or be lost. A locksmith can replace them. They can reprogram the new device so that it can connect to the computers in your car which allows you to lock and start your car again. All they require is a replacement battery. Open the smart key fob and then take out the battery that was in it. Place the new battery in the same holder. Make sure that the edges of the key fob are flush.