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Reprogramming Car Keys Transponder keys for car keys are thought to keep vehicles more secure and more difficult for thieves to duplicate. Keys may need to be programmed again in the event that it is damaged or lost. You can reprogram your key fobs at home, but you should be aware of the proper procedure. For the best results, you must have the following items: Keys Almost all modern cars require some kind of transponder key or fob in order to operate, providing security and anti-theft protection. These keys must be programmed to the specific car and its systems by an authorized dealer or locksmith. They are expensive to replace in the event of loss and you should keep extras handy. You can also find replacement key fobs on various websites and in many brick-and-mortar auto shops. How can you ensure that the one you bought is authentic? Do you know whether the unit has been programmed to work with a different vehicle or if it could be reprogrammed? To program a new car keys, you must first verify that your vehicle is operating. Insert the key you want to reprogramme into the ignition, but do not turn it. There are only a few seconds before the system resets all commands and then exits the programming mode. Therefore, it is important to be quick and not be able to wait between steps. To avoid this happening, turn off the engine. Turn the key from “on” to “off” to test the system. There should be a chime signalling that the procedure was successful. The door locks will cycle. Certain vehicles of recent years use rolling keys to keep thieves from using stolen keys to start the vehicle. The feature is still vulnerable to a technique dubbed a replay attack. It allows thieves to record and later duplicate the signal generated by the vehicle key fob to open the car. To counter this, manufacturers have added a security feature called CAN bus protocol to prevent hacking attempts. Certain manufacturers employ a specific encryption on their keys that cannot be decoded by an ordinary program. You should only try this method if your previous experiences are with electronic devices. It's a good idea to refer to the owner's manual of your vehicle or look up the manufacturer on the internet, since the steps will differ depending on the vehicle type. Transponder chips Transponder chip car keys require a specific reprogramming to function. While any hardware store can cut keys for you, the biggest issue is how to integrate it in conjunction with your particular car. The key has to be programmed to match the exact identification number of your car, otherwise it won't start. Transponder chips, used to stop theft of cars are a standard feature of modern automobiles. The chip is a small microcircuit which transmits a radio-frequency signal when the ignition key is inserted. The car detects the signal and begins the engine only if the signal matches the one programmed in the vehicle. The car is also programmed so that it will shut down when it detects an incorrect frequency. This makes it much more difficult for novice car thieves to connect a vehicle with hot wires and start it. The key and the chip are connected via a circuit board that includes an induction coil. When the key is placed in the ignition it creates a magnetic field created around the transponder. This generates a signal, which is received by the coil before being sent to the key identification number. The ID number of the key is transmitted back to the vehicle and if it matches, the engine will start. There are many ways to program a transponder key however, they all require an instrument that is specifically designed for the purpose. These tools can be bought online or from most automotive locksmiths. They're not cheap, but they're crucial for programming the chip into your car. You could also make use of a transponder key that can be reprogrammed that was previously programmed for a different vehicle. In this instance you'll need sure that the key has not been damaged or the transponder been altered in any way. The chip can be read by using a scanner or a computer with an USB connector. Reprogramming an transponder is a simple process, but requires specialized software. It also requires a scanner tool. It is best to consult an auto locksmith for assistance for those who are new to the process. You should also avoid buying secondhand keys, as they're probably already programmed and will not work with your car. EZ Installer Prior to recently those who wanted to replace their key fob had to go to a dealer to have it digitally paired to the vehicle. This is because modern keys have to be “paired” to a specific vehicle in order to function, which required the use of expensive and complicated equipment that only dealers could access. The EZ Installer by Car Keys Express simplifies the process of pairing modern keys with vehicles for retailers and locksmiths. The EZ Installer, a basic “plug-and-play” OBD device, connects new keys to vehicles without the need for complicated equipment or tokens to facilitate programming. It connects directly to the standard OBD port on the vehicle and utilizes a mobile application to provide easy to follow instructions. The EZ Installer works with all newer models that have 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 the full refund will be offered. Contrary to conventional programming equipment which costs retailers and key professionals tens of thousands of dollars in “token” fees per key, the EZ Installer Pro does not charge these fees. It is available as long as a key professional or retailer needs. The EZ Installer also eliminates the necessity for expensive monthly service contracts and updates, so it will save retailers money while offering customers the same high-quality service as OEM equipment. It also offers a leading warranty that covers both hardware and software for the rest of your life. You can also learn more about Locksmiths, auto mechanics and vehicle owners can use car key programming tools to create new keys for vehicles. These tools can communicate with the immobilizer of the vehicle to program new keys and remote controls. They can also be used to copy existing keys and create duplicates. These tools are a valuable tool for anyone who owns an automobile. One of the most admired tools for programming car key s is the Autel Maxisys MS906BT. This vehicle diagnostic scanner has advanced features that are OE-grade and is compatible with most of the top brands. It features an essential programming feature and can backup current key data. It also resets the immobilizer, or clear the fault codes. The OTOFIX IM1 is an important tool for reprogramming car keys. This auto diagnostic scanner is able to read passwords from all major brands and has advanced features that are OE-level. It also has the ability to perform online calibration, customization, and reading of EEPROM. It also comes with a feature 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 bidirectional scanner XToolUSA is another popular choice to reprogramme vehicles. It can read key information and codes from most vehicles in a few seconds which makes it a perfect tool for auto shops and locksmiths. It also has a live test feature that helps identify the issue quickly. There are many ways to reprogram your car. It is important to have the proper tools and to understand how they function. A mistake in programming could damage the vehicle's immobilizer and prevent it from beginning. Before you attempt to program your car key, it's best to consult a professional. You can also purchase a kit that includes keys, a key programmer, remote control key and transponder chip. This will help ensure that you have everything you need to reprogramme your car key. This method takes longer and requires expertise in soldering and electronics.