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Reprogramming Car Keys Car keys with transponders are thought to keep vehicles safer and are less likely to be duplicated by thieves. However, keys may require reprogramming if it becomes damaged or lost. You can program key fobs yourself, but you must know the correct procedure. For the best results you should have the following items: Keys Modern cars require a transponder key to operate. This gives security and anti-theft protection. The keys are programmed by a locksmith or an authorized dealer to function with the car's systems and specific model. It is expensive to replace them if they become lost, so it's best to keep extras on hand. You can find key fobs to replace them in online stores, as well as many brick and mortar auto shops. How do you ensure that the one you have bought is authentic? Do you know whether it was programmed for another car or if it is able to be reprogrammed to fit your vehicle? If you're looking to program an entirely new key first, you need to ensure that your car is operating. Insert the key you wish to program into the ignition, but do not turn it. There are only a few seconds before the system will reset all commands and exits the programming mode. This is why it is crucial to move quickly and not be able to wait between steps. To prevent this from happening, shut off the engine. You can check the system of your car by turning the key to the “on” position and then back to the “off” position. The door locks should cycle and you will hear a chime to indicate that the process has been successful. Certain cars with more modern technology have rolling key technology, which stops thieves from using a stolen vehicle's key to open it. This technology is still vulnerable to a method known as replay attacks which allows thieves to record the signal received from the vehicle's key fob and reproduce it later to open the car. To combat reprogram car key , manufacturers have added a security feature known as the CAN bus protocols to stop hackers from gaining access to the vehicle. Certain manufacturers also have special encryption on their key fobs which are not decoded by an easy program. You should only try this method if your previous experience is in electronics. Check the manual of your car or visit the website of the manufacturer to learn how to program it. The steps to follow will differ depending on the type of vehicle. Transponder chips Transponder chip car keys require a specific reprogramming to work. While any hardware store can cut keys for you, the real challenge is making it function in conjunction with your particular car. A reprogrammed key will need to be matched with the exact identification number of your car or else it won't be able to start the engine. Transponder chips, used to stop theft of cars, are a common feature of modern cars. The chip is a microcircuit that emits a radio frequency signal when the ignition key is put in. The car can detect the signal and begins the engine only if it matches the original that was programmed in the vehicle. The car also shuts down if a frequency is invalid. This makes it much harder for novice car thieves to hot wire a vehicle and then start it. A circuit board that has an induction coil that connects the chip to the key. When the key is put in the ignition, a magnetic field is created around the transponder. This generates a signal that gets amplified by the coil which sends it to the key's identification number. The ID number of the key is then sent back to the vehicle, and if it matches, the engine will start. There are several ways to program a transponder, however each requires a special tool. These tools can be bought through the internet or from many automotive locksmiths. They're not cheap, but they're essential for programming the chip into your vehicle. You can also use an unreprogrammable key that was programmed for another vehicle. In this instance, you'll need to make sure that the key is not damaged or the transponder been altered in any way. The chip can be read using a scanner, or a computer equipped with a USB connector. Reprogramming a transponder key is quite simple, but it requires an expertly designed software and scan tool. It's best to ask an auto locksmith for help if you're a novice. Avoid buying used keys as they might already be programmed and won't work with your vehicle. EZ Installer For a long time, car owners who needed to replace their key fob had no alternative than to visit an auto dealer to have their key electronically paired to the vehicle. This is because in order to make modern keys function they have to be “paired”. This required expensive and complicated equipment that was available only to dealers. The EZ Installer from Car Keys Express solves this issue for locksmiths and retailers by making it easier for pairing modern keys with vehicles. The Easy Installer is a straightforward, “plug and play” OBD device that connects new keys with vehicles without the need for expensive equipment or programming tokens. It connects directly to the standard OBD port on the vehicle, and runs a mobile application to provide easy to follow instructions. The EZ Installer is compatible with the majority of newer vehicles, including those with proximity keys or push button start. Check the compatibility guide at Tom's site to see whether your vehicle is compatible. A full-money-back guarantee is provided in the event that the device fails to successfully program a remote or key purchased from Tom's for a compatible vehicle. In contrast to traditional programming equipment that costs retailers and key professionals thousands of dollars through typical per-key “token” costs, the EZ Installer Pro doesn't charge any fees, so it can be used for as long as a key professional wants to keep it. The EZ Installer eliminates the need for costly monthly service contracts and software updates. This lets retailers save money while offering their customers the same top quality service as OEM equipment. It also comes with a world-class warranty that includes all software and hardware for life. Tools Locksmiths, auto mechanics, and even owners of vehicles can use car key programming tools to create new keys for vehicles. These tools connect to the vehicle's immobilizer system to program new keys and remote controls. These tools can be used to make duplicates and clone keys. These tools are an essential tool for anyone who owns a car. Autel Maxisys MS906BT is among the most popular tools for programming keys for cars. This vehicle diagnostic scanner offers advanced OE-level features and is compatible with all of the major brands. It has a key programming feature and can backup the current key information. It also has the capability of resetting the immobilizer as well as clearing immobilizer fault codes. The OTOFIX IM1 is another important tool to reprogramme keys for cars. This auto-diagnostic scanner has advanced OE-level functions and can read passwords from the majority of major brands. It is also able to perform online calibration as well as customization and reading EEPROM. It also comes with an option to bypass the BMW or Mercedes PIN code. It also has the ability to read EEPROMs, car MCUs, and CAN-EEPROMs for most major models. The XToolUSA Bidirectional Scanner is another option for reprogramming vehicles. This tool can read key information and codes from most vehicles within a few seconds which makes it a perfect tool for auto shops as well as locksmiths. It also features an active test feature that allows you to find the problem quickly. While there are many different ways to reprogram your car, it is crucial to select the appropriate tools and know how to use them. A mistake in programming could cause damage to the immobilizer of the vehicle and stop it from beginning. It is recommended to seek advice from a professional prior to trying to reprogram a car key. You can also purchase a kit that includes a key programmer, remote control key, and transponder chip. This will ensure that you are supplied with all the tools you require to reprogram the car key. This method takes longer and requires a basic understanding of soldering and electronics.