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Smart Car Key Reprogramming Locksmiths are required to repair quickly and safely your smart car key should you require replacing the battery or isn't working. A locksmith will also have the tools necessary to reprogram the new key fob. Before beginning the reprogramming process Before you begin the process, take the driver's seat and shut all doors. This will enable you to program your keys without affecting your vehicle's electrical systems. What is a smart key? A smart key is a fob in your car that allows you to unlock your doors, lock your trunk, and even start the engine without needing physically contact the vehicle. It transmits signals to the car using an encrypted microchip which is connected to the vehicle's computer onboard. This technology prevents thieves from hacking into the car and using it for. Smart keys are an excellent alternative to traditional keys. While modern automobiles can still be started without a key in many cases, they make the process much more convenient. They let drivers lock or unlock their car, and even remotely start their vehicle using their phone. This can be a fantastic comfort for those exhausted of having to dig through their pockets to locate their car's keys. Open Road Auto Group says that the main difference between regular keys and smart keys is that smart keys don't transmit the same frequency signal in a series. This is applicable to all makes and models that use the same key and could be used to steal vehicles. Smart keys broadcast an encrypted signal each time they unlock doors or remotely open a trunk. This helps deter tech-savvy thieves from taking your vehicle [source: Popular Mechanics]. Some smart keys can also store details about the car, like the settings for the power seat or mirrors which can be useful in an emergency situation. Additionally some smart keys come with batteries that can be used in the event of a power failure. How do smart keys work? Smart keys are a fantastic way to unlock your vehicle without turning a traditional key. The key fob transmits an electrical signal to a computer that is processed by the antennas. The computer issues a command to the door to be unlocked or for the engine to start. Smart keys are also more secure than traditional ones. They have RFID (radio-frequency identification) technology, which is unique to the key as well as the car. This means it's nearly impossible to steal from a car equipped with a smart key. Even if a criminal successfully breaks into the vehicle and tries to wire it to start the car, it will not start unless the encrypted code is from the key fob. Smart keys are also very convenient, as they automatically lock your car whenever you're out of reach. This is especially useful if you're prone to forgetting to lock your car doors after leaving the vehicle. The only disadvantage of a smart key is that they have to be programmed properly in order to work correctly. This involves entering a special sequence of commands into the diagnostic tool or following on-screen prompts. The majority of people aren't at ease doing this on their own so they give it to experts. How do I program a smart key? There are a variety of ways to program the smart key. The process will vary by vehicle, so it's best to consult the owner's manual for the model you own. Generally, the process involves inserting the key into the ignition and turning it until it is in the on position. It is possible to remove the key after the security light has flashed. Follow the instructions on screen to reset and program the key fob. The other alternative is to contact the local locksmith or an automotive dealership. A lot of locksmiths offer smart car key replacement and programming services, so finding one shouldn't be too difficult. These services are also provided by many dealerships for cars and if you have an arrangement with your dealer, they may be able to assist you. To program a new key, you'll require the vehicle identification number (VIN). It is a unique number that is used to identify your car and its parts. You can find it on your insurance card or registration. Follow the instructions on the screen to program the key fob after you have the VIN. After the key has been programmed you should be able use it to lock and unlock your vehicle. However it will not start your engine. If you wish to start the engine, you'll need to contact a locksmith or dealership. Luckily, many car dealerships now offer smart key repair and replacement for a reasonable price. How much will it cost to program a smartkey? The majority of modern car keys are in the form of key fobs with an integrated chip. The chip allows the key to communicate with the vehicle using radio waves when the button on the key fob is activated. The car will unlock its doors and then start the engine when an appropriate code from the key fob is transmitted. If your key fob isn't working it might require reprogramming to match the current settings of your vehicle. This is usually performed by a dealer, however locksmiths can also handle it. The cost of reprogramming your smart key is dependent on the type and model of your vehicle. Although it might be tempting to try and program your car key by yourself it is usually a bad idea. Reprogramming a smart car key is a complicated procedure that requires specific tools, as well as an understanding of electronic circuits and circuit boards. You could damage your car key by trying to program it by yourself. smart forfour key to have your car's key programmed at the dealership could be expensive, but it's generally worth it when you want to make sure that your key fob will continue to function properly. If you would like to save cash, there are numerous online guides available to guide you through the process of programming a smart key at home.