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Reprogramming Car Keys Transponder keys for car keys are thought to keep vehicles safer and are more difficult for thieves to duplicate. Keys may need to be reprogrammed in event that it is damaged or lost. You can program key fobs yourself however, you must be aware of the proper procedure. For the best results, you should have the following items: Keys Nearly all modern vehicles require a transponder fob or transponder keys to work, which provides security and protection against theft. The keys are programmed by a locksmith or authorized dealer to work with your car's system and specific model. It's expensive to replace them if they're lost, so it's a good idea to keep extras on hand. You can also find replacement key fobs at various online stores and in a variety of brick-and-mortar automotive shops. How do you ensure that the key fob you bought is authentic? Do you know if it has been programmed to work with another vehicle or if it could be programmed to work with your car? If you are planning to program a new key the first step is to ensure that your car is on and running. Insert the key you wish to program into the ignition without turning it. There are only a few seconds before the system will reset all commands and exits the programming mode. It is crucial to be quick and don't delay between each step. Stop the engine to prevent this. You can test the system of your car by turning the key to the “on” position and back to the “off” position. The door locks should cycle, and you will hear a chime to indicate that the process was successful. Certain newer vehicles have rolling key system, which prevents thieves from using a stolen car's key to start it. The technology is still susceptible to a method known as replay attacks, which allows thieves to record the signal of the vehicle's key fob and then replicate it to open the car. To stop this, manufacturers added the security feature known as the CAN bus protocols to ward off hacking. Certain manufacturers employ a specific encryption on their keys that cannot be decoded by a simple program. These kinds of cars will need to be programmed by a professional, and you should only attempt this process with someone who has experience with electronics. Check the manual of your car or look up the manufacturer's website for information on how to program it. The steps to follow will differ depending on the type of vehicle. Transponder chips Car keys with transponder chips require special reprogramming to work. While any hardware store can cut a new key for you, the real challenge is making it function to work with the specific car you own. The key needs to be programmed to match the exact identification code on your car, otherwise it won't start. Transponder chips, used to prevent car theft are a standard feature of modern automobiles. The chip is a small microcircuit which transmits a radio-frequency signal when the ignition key is put in. The car is able to detect the signal and starts the engine only if the signal is in line with the one programmed in the vehicle. The car will also shut down if the frequency is not valid. This makes it difficult for novice car thefts to connect a vehicle to a hot wire and then start it. A circuit board with an induction coil that connects the chip to the key. When the key is put in the ignition the magnetic field is created around the transponder. This generates a signal that gets amplified by the coil which transmits it to the key's identification number. The key's ID number is sent back to the vehicle, and if it matches the engine will begin to run. There are many ways to program a key transponder, but each requires a special tool. You can buy these tools online or at most automotive locksmiths. These tools aren't inexpensive, but they are vital to program your car's chip. You could also use a reprogrammable transponder key that was previously programmed for a different vehicle. In this instance you'll need sure that the key isn't damaged or the transponder has been altered in any way. You can read the chip with a scanner, or a computer equipped with a USB connector. Reprogramming the transponder is a straightforward procedure, but requires specific software. It also requires a scanner tool. If you're just beginning it is recommended to seek help from an auto locksmith. Don't buy used keys since they could already be programmed and won't work with your car. EZ Installer Until recently, car owners who wanted to replace their keys were required to go to a dealer to have it electronically linked to the vehicle. It is because to make modern keys work, they need to 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 up modern keys with vehicles for retailers and locksmiths. The EZ Installer is a basic, “plug and play” OBD device that pairs 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 uses an app that can be downloaded on mobile devices to provide simple to follow instructions. The EZ Installer works with most modern vehicles with proximity keys or push-button start. To determine if it'll work for a particular vehicle, look up the compatibility guide on the Tom's website. If the device is unable to program the remote or key purchased from Tom's into a vehicle compatible, a full refund is provided. Unlike traditional programming equipment, which can cost key professionals tens of thousands of dollars in “token” fees per key, the EZ Installer Pro does not charge these costs. It is available for as long as a key professional or retailer wants. The EZ Installer eliminates the need for expensive monthly service contracts and software updates. This lets retailers save money while giving their customers the same high quality service as OEM equipment. It also comes with a renowned warranty that covers both hardware and software for the rest of your life. reprogram car key programming tools are used by auto technicians, locksmiths, and vehicle owners to program new keys for their automobiles. These tools connect to a vehicle's immobilizer in order to program new keys and control them remotely. They can also be used to copy existing keys and create duplicate keys. These tools are an essential tool for anyone who owns an automobile. One of the most well-known tools for programming keys to cars is the Autel Maxisys MS906BT. The scanner for diagnostics of vehicles is compatible with all major brands and comes with advanced OE features. automotive key programming comes with an option for key programming and is able to backup current important information. It also has the capability of resetting the immobilizer as well as clearing immobilizer fault codes. Another important 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 can also perform online calibration, customization and EEPROM reading. The tool comes with an option that allows it to bypass the PIN code of BMW and Mercedes. It can also read EEPROM, car MCU, and CAN EEPROMs for all major models. The bidirectional scanner XToolUSA is another popular choice for reprogramming vehicles. This scanner can read key information and codes from most vehicles in a few seconds and is a fantastic tool for auto shops and locksmiths. It also features an active test feature that can help identify the issue quickly. There are a myriad of ways to reprogram a car, it is important to use the right tools and to know how to use them. A mistake in programming could damage the vehicle's immobilizer and prevent it from beginning. It is best to consult a professional before trying to reprogram your car key. Another option is to purchase the kit that comes with keys, a key programmer, remote control key, and transponder chips. This will help ensure that you have everything you need to reprogramme your car key. However, this process takes longer and requires some understanding of electronic circuits and soldering.