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Reprogramming Car Keys Transponder keys for car keys are believed to make cars more secure and are less likely to be duplicated by thieves. A key may have to be reprogrammed in the case of damage or lost. You can program key fobs yourself however, you must be aware of the proper procedure. For the best results, you'll need the following items: Keys The majority of modern vehicles require a transponder key in order to operate. This provides security and anti-theft protection. The keys are programmed by a locksmith or authorized dealer to work with your car's system and specific model. They are expensive to replace in the event of loss therefore, you should have spares in your car. You will also find replacement key fobs on various websites and in a variety of brick-and-mortar automotive shops. How can you be sure that the one you bought is authentic? Are you able to tell whether it was programmed for another car or if it is able to be programmed to work with your car? If you want to program a new key, the first step is to make sure that your car is operating. Insert the key you want to program into the ignition, but do not turn it. You have only a few seconds left before the system will reset all commands and leaves the programming mode. This is why it is important to move quickly and not pause between steps. To avoid this happening, turn off the engine. Switch the key from “on” to “off” to test the system. You should hear a sound signalling that the procedure was successful. The door locks will be able to cycle. Some newer cars use a rolling key technology, which stops thieves from using a stolen vehicle's key to start it. The feature is still vulnerable to a technique called replay attack. It allows thieves to record and later reproduce the signal received from the key fob of the vehicle to open the car. To prevent this, manufacturers introduced security features known as the CAN bus protocols to stop hacking. Some manufacturers also use special encryption on their key fobs, which cannot be decoded by an ordinary program. You should only attempt this method if your previous experience is in electronic devices. Consult your car's manual or go to the manufacturer's website to learn how to program it. The steps will vary according to the type of vehicle. Transponder chips Transponder chip car keys require special reprogramming in order to function. While any hardware store can cut a new key for you, the biggest issue is how to integrate it to work with the specific car you own. The key needs to be programmed to match the exact identification number on your car, or else it won't be able to start. Transponder chips, which are used to protect cars from theft are a standard feature of modern automobiles. The chip is a small microcircuit that emits a radio frequency signal when the ignition key is placed. The car is able to detect the signal and starts the engine only if it matches the original one that was programmed into the vehicle. The vehicle is also programmed to stop when it detects an incompatible frequency. This makes it more difficult for novice car thefts to connect a vehicle to a hot wire and then turn it on. A circuit board with an induction coil that connects the chip to the key. When the key is put in the ignition, a magnetic field is generated around the transponder. This produces a signal which is taken up by the coil, which then transmits it to 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 methods to program a transponder key however, they all require an appropriate tool. These tools can be purchased online or from most automotive locksmiths. They are not cheap, but they're crucial for programming the chip to your car. You may also use a unreprogrammable key that was programmed for an alternative vehicle. In this scenario you'll need to make sure that the key isn't damaged or the transponder has been altered in any way. The chip can be read by using a scanner or a computer that has an USB connector. Reprogramming a transponder key is quite easy, but it will require an expertly designed software and scan tool. It is recommended to contact an auto locksmith for assistance if you're a novice. Avoid buying used keys as they may already be programmed and won't be compatible with your vehicle. EZ Installer For a long time, owners of cars who required a replacement for their key fob had no option than to go to a dealership to get their key linked to their vehicle. This is because, in order to make modern keys function, they need to be “paired”. This required expensive and complex equipment that was available only to dealers. The EZ Installer from Car Keys Express solves this problem for locksmiths and retailers by easing the process of pairing modern keys with vehicles. The EZ Installer is a simple, “plug and play” OBD device that pairs new keys to vehicles, without the need for complicated equipment or programming tokens. It connects directly to the standard OBD port of the vehicle, and runs an app that can be downloaded on mobile devices to provide simple to follow instructions. The EZ Installer is compatible with most newer models, including those with proximity keys or push button start. To determine if it'll work for a particular vehicle, look up the compatibility guidelines on Tom's site. If the device is unable to program a remote or key purchased from Tom's into a vehicle that is compatible, a full refund is provided. In contrast to traditional programming equipment, which costs key retailers and professionals hundreds of thousands of dollars in “token” fees per key, the EZ Installer Pro does not charge these fees. It is available for as long as a key professional or retailer wants. The EZ Installer also eliminates the necessity for expensive monthly service contracts and updates, so it will reduce costs for retailers while providing the same quality service as OEM equipment. It also comes with an industry-leading warranty that covers all hardware and software for the duration of its life. Tools Locksmiths, auto mechanics and even owners of vehicles can use car key programming tools to program new keys for cars. These tools can communicate with the immobilizer of the vehicle to program new keys and remote controls. These tools can be used to make duplicates and duplicate keys. These tools are an essential tool for anyone who owns a car. One of the most admired tools for programming car keys is the Autel Maxisys MS906BT. The scanner for diagnostics of vehicles provides advanced features OE-level and is compatible with all of the major brands. It has an important programming feature that can backup the current key information. It can also reset the immobilizer or clear immobilizer fault codes. The OTOFIX IM1 is another important tool for reprogramming keys for cars. This auto diagnostic scanner can read passwords for most major brands, and it comes with advanced features comparable to OE. It also allows online calibration, customization, and reading of EEPROM. It also comes with an option to bypass a BMW or Mercedes PIN code. It is also able to read EEPROM, car MCU and CAN EEPROMs for all major models. The XToolUSA Bidirectional Scanner is another option for reprogramming vehicles. This is a fantastic tool for auto repair shops as well as locksmiths because it can read key codes and other data from all vehicles in just a few seconds. It also has an active test feature that can help determine the cause quickly. There are a myriad of ways to reprogram your car, it is important to use the right tools and to know how to make use of them. Incorrect programming could cause damage to the vehicle's immobilizer system, and may prevent it from working. It is advised to seek advice from a professional prior to trying to reprogram your car key. You can also purchase a kit that includes keys, a key programmer, remote control key and transponder chip. This will ensure that you have everything you need to reprogramme your car key. This method is more time-consuming and requires a basic understanding of soldering and electronics.