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Reprogramming Car Keys Transponder keys are thought to be more secure for vehicles and more difficult to copy by thieves. The key could need to be reprogrammed in case of damage or lost. You can change the key fobs you own but you must be aware of the correct procedure. It is essential to have these items to achieve the best results: Keys Nearly all modern vehicles require some kind of transponder key or fob to operate, providing security and protection against theft. The keys have to be programmed to the specific vehicle and its systems by a certified locksmith or dealer. It's expensive to replace them if they're lost, so it's best to have spares available. You can find key fobs that can be replaced in online stores, as well as many brick and mortar auto shops. But how can you tell that the one you purchased is genuine? Are you able to tell whether the unit has been programmed to work with a different vehicle, or if it can be reprogrammed? If you are planning to program an entirely new key first, you need to make sure that your car is running. Insert the key that you want to program into the ignition, but don't turn it. There are only a couple of seconds before the car's system reverts the commands and then exits programming mode. It is essential to move quickly and don't be patient between each step. To avoid this happening, shut off the engine. Switch the key from “on” to “off” to test the system. The door locks should cycle, and you'll hear a chime to indicate that the process was successful. Certain newer vehicles have rolling key technology that stops thieves from using a stolen car's key to start it. This feature is still vulnerable to a technique known as replay attacks which allows thieves to record the signal received from the vehicle's key fob and reproduce it later to unlock the car. To combat this, manufacturers added the security feature known as the CAN bus protocols to prevent hacking. Certain manufacturers also employ special encryption on their key fobs, that cannot be decoded with an ordinary program. It is best to only attempt this process if your experiences are with electronic devices. Consult your car's manual or go to the manufacturer's website to find out how to program it. The steps to follow will differ according to the type of vehicle. Transponder chips Transponder chip car keys require special reprogramming in order to work. Any hardware store can give you an entirely new car key, but the real challenge lies in integrating it with your car. The key must be programmed to match the exact identification number of your car, or else it won't be able to start. Transponder chips are a common feature in modern cars and are designed to stop car theft. The chip is a microcircuit that emits a radio frequency signal when the ignition key is placed. The car can detect the signal and starts the engine only if it matches the original one that was programmed in the vehicle. The car will also shut down if the frequency is invalid. This makes it harder for thieves with no experience to wire a vehicle hot and then start it. A circuit board with an induction coil that connects the key to the chip. When the key is inserted into the ignition, it creates an electric field around the transponder. This generates a signal that is taken up by the coil before being sent to the key's identification number. The ID number of the key is sent back to the vehicle and if it matches, the engine will start. There are several ways to program a transponder keys, however, all require an instrument that is specifically designed for the purpose. You can buy these tools online or at most automotive locksmiths. They are not cheap, but they are essential for programming the chip into your car. You may also use a reprogrammable transponder key that has been previously programmed for a different vehicle. In this case, ensure that the key has not been damaged or that the transponder has not been altered in any way. To accomplish this, you'll need scanners or computers with a USB port to identify the chip and establish its identity. The process of reprogramming an transponder's key is simple, however it requires specialized software and a scan tool. If you're just beginning you should seek out the help of an auto locksmith. It is also recommended to avoid purchasing secondhand keys, as they are likely already programmed and will not be compatible with your car. EZ Installer Until recently those who wanted to replace their key fob were forced to visit an authorized dealer to get it electronically paired with the vehicle. This is because in order for modern keys to function they must be “paired”. This required expensive and complex equipment that was available only to dealers. The EZ Installer by Car Keys Express simplifies the process of pairing modern keys with vehicles used by retailers and locksmiths. The Easy Installer, a straightforward “plug-and-play” OBD device, pairs new keys with vehicles without the need for complicated equipment or tokens to facilitate programming. It connects directly to the vehicle's standard OBD port and utilizing a mobile app to provide simple instructions. The EZ Installer is compatible with the majority of newer vehicles, including those with proximity keys or push button start. Go to the compatibility guide on Tom's website to see if your vehicle is compatible. If the device fails to program a remote or key purchased from Tom's into a vehicle that is compatible then a full refund is available. Unlike traditional programming equipment that costs retailers and key professionals thousands of dollars with typical per-key “token” charges, the EZ Installer Pro doesn't charge these fees at all, so it can be used for as long as a retailer or key professional would like to keep it. The EZ Installer eliminates the need for expensive monthly service contracts and software updates. This allows retailers to save money while giving their customers the same high quality service as OEM equipment. It also offers an industry-leading warranty that includes all software and hardware for life. You can also learn more about Locksmiths, auto mechanics and owners of vehicles can utilize car key programming tools to create new keys for cars. These tools can communicate with the vehicle's immobilizer system to program new keys and remote controls. car key programing can also be used to copy existing keys and create duplicates. These tools are an essential tool for anyone who owns an automobile. One of the most well-known car key programming tools is the Autel Maxisys MS906BT. The scanner for diagnostics of vehicles provides advanced features OE-level and is compatible with the majority of the top brands. It also comes with a key programming function and is able to backup current key data. It also resets the immobilizer, or clear the fault codes. Another tool that is essential to reprogramme car keys is the OTOFIX IMM1. This auto diagnostic scanner has advanced functions that are OE-level and can read passwords from most major brands. It can also perform online calibration, customization and reading EEPROM. The program also has the ability to bypass a BMW or Mercedes PIN code. It is also able to read EEPROMs, car MCUs, and CAN-EEPROMs of all major models. The XToolUSA Bidirectional Scanner is another option to reprogramme cars. It can read key information and codes from most vehicles within a few seconds, making it a great tool for auto shops and locksmiths. It also has a live test feature that helps identify the issue quickly. There are a variety of ways to reprogram a car it is important to use the right tools and know how to utilize them. Incorrect programming can cause damage to the vehicle's immobilizer system, and may prevent it from starting. It is best to seek advice from a professional prior to attempting to reprogram a car key. You can purchase a kit that includes the key programmer, a remote control key, and transponder chip. This will ensure that you are supplied with all the tools you need to reprogram your car's key. However, this process will take more time and requires some knowledge of electronic circuits and soldering.