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Reprogramming Car Keys Transponder keys are believed to be more secure for cars and are more difficult to copy by thieves. A key may have to be programmed again in the event that it is damaged or lost. You can change the programming of your key fobs at home, however you must be aware of the correct procedure. For the best results you must have the following items: Keys Most modern vehicles require some kind of transponder key or fob in order to operate, providing security and protection against theft. The keys are programmed by a locksmith or an authorized dealer to work with your car's system and specific model. They are costly to replace in the event of loss and it is recommended to keep spare keys in the car. You will also find replacement key fobs in various online stores and in many brick-and mortar auto shops. How can you know that the one you purchased is genuine? Can you tell if it has been programmed for another car or if it can be programmed to work with your car? If you are planning to program a new key first, you need to ensure that your car is on and running. Insert automotive key programming wish to reprogram into the ignition, but do not turn it. There are only a few seconds before the system will reset all commands and then exits the programming mode. It is crucial to be quick and don't be patient between each step. To avoid this happening, shut off the engine. Turn the key from “on” to “off” to test the system. There should be a chime to indicate that the process was successful. The door locks will be able to cycle. Certain cars with more modern technology have rolling key technology that prevents thieves from using a stolen car's key to start it. This technology is still vulnerable to a method known as replay attacks, which allows thieves to record the signal received from the key fob on the vehicle, then reproduce it to open the car. To counter this, manufacturers have added an additional security feature known as the CAN bus protocol to prevent attacks on hacking. Some manufacturers use a special encryption on their keys that cannot be decoded using an ordinary program. These types of vehicles require to be programmed by a professional, and you should only attempt this procedure if you have experience working with electronics. Consult your car's manual or go to the manufacturer's website for information on how to program it. The steps are different according to the type of vehicle. Transponder chips Car keys that feature transponder chips need special reconfiguration to work. While any hardware store can cut keys for you, the main issue is how to integrate it to work with the specific car you own. A key that has been reprogrammed will need to be compatible with the specific identification number of your car, or it won't start the engine. Transponder chips are a typical feature in modern cars and are designed to guard against car theft. The chip is a microcircuit that emits a radio frequency signal when the ignition key is placed. The car detects the signal and starts the engine only if the signal matches the original one that was programmed in the vehicle. The car will also shut down if a frequency is not valid. This makes it much harder for car thieves with no experience to hot wire a vehicle and then start it. The key and the chip are linked by the circuit board which includes an induction coil. When the key is placed in the ignition, a magnetic field is created around the transponder. This generates a signal, which is received by the coil and then transmitted to the key's identification. The key's identification code is returned to the car and the engine will start when the identification number matches. There are several ways to program a key transponder, however each requires the use of a specific tool. These tools are available through the internet or from many automotive locksmiths. They are not cheap, but they're essential for programming the chip into your car. You can also use an unreprogrammable key that was programmed for a different vehicle. In this case you'll need sure that the key has not been damaged or the transponder been altered in any way. You can read the chip with a scanner, or a computer that has an USB connector. The process of reprogramming an transponder's key is simple, however it requires specialized software and a scan tool. If you're a beginner it is recommended to seek out the help of an auto locksmith. Avoid buying used keys as they could already be programmed, and they won't work with your vehicle. EZ Installer For decades, car owners who required a replacement for their key fob had no other option than to go to a dealership to get their key connected to the vehicle. It is because for modern keys to function, they need to be “paired”. This required expensive and complicated equipment that was available only to dealers. The EZ Installer by Car Keys Express simplifies the process of pairing modern keys to vehicles for retailers and locksmiths. The Easy Installer is a straightforward, “plug and play” OBD device that pairs new keys to vehicles, without the need for complicated equipment or programming tokens. It works by connecting directly to the vehicle's standard OBD port, and then using an app for mobile devices to provide simple-to-follow instructions. The EZ Installer works with a wide range of modern vehicles with proximity keys or push-button start. Check the compatibility guide at Tom's site to see if your vehicle is compatible. A full-money-back guarantee is provided in the event that the device fails to successfully program a key or remote purchased from Tom's for a vehicle compatible. In contrast to traditional programming equipment, which can cost key professionals hundreds of thousands of dollars in “token” fees per key, the EZ Installer Pro does not charge these fees. It is able to be used as long as a key professional or retailer needs. The EZ Installer also eliminates the necessity for expensive monthly service agreements and updates, which means it will save retailers money while providing customers with the same high-quality service as OEM equipment. It also comes with an industry-leading warranty that covers all hardware and software for the life of the product. Tools Car key programming tools are used by locksmiths, auto technicians, and vehicle owners to create new keys for their vehicles. These tools can communicate with the vehicle's immobilizer system to create new keys and remote controls. They can also be used to duplicate existing keys and create duplicates. These tools are a valuable tool for anyone who owns a car. One of the most admired tools for programming car key s is the Autel Maxisys MS906BT. This scanner for vehicle diagnostics has advanced features that are OE-grade and is compatible with all of the top brands. It has a key programming feature and can backup current key data. It can also reset the immobilizer or clear immobilizer fault codes. Another essential tool for reprogramming car keys is the OTOFIX IMM1. This auto diagnostic scanner has advanced OE-level functions and can read passwords from all major brands. It also allows online calibration, customization, and EEPROM reading. It also comes with the ability to bypass the PIN code of BMW and Mercedes. It can also read EEPROMs, car MCUs and CAN-EEPROMs for most major models. The XToolUSA Bidirectional Scanner is another top choice for reprogramming vehicles. This tool can read codes and key information from most vehicles in a few seconds which makes it a perfect tool for auto shops as well as locksmiths. It also has an active test function that can help find the issue quickly and efficiently. There are a myriad of ways to reprogram a car it is crucial to use the right tools and to be aware of how to make use of them. Incorrect programming could cause damage to the vehicle's immobilizer system, and may prevent it from starting. Before attempting to program your car key, it's best to consult with an expert. You can purchase a kit that includes keys, a key programmer, remote control key and transponder chip. This will ensure that you are equipped with all the tools you require to reprogram the car key. This method takes longer and requires expertise in soldering and electronics.