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Reprogramming Car Keys Transponder keys are thought to be more secure for cars and are more difficult to copy by thieves. However, keys may need to be reset if it becomes damaged or lost. You can change the key fobs you own but you must be aware of the correct procedure. For the best results, you must have the following items: Keys Almost all modern cars require a transponder key or fob in order to work, which provides security and anti-theft protection. These keys are programmed by a locksmith or an authorized dealer to function with the car's systems and specific model. It's costly to replace them if they are lost, so it's better to have spares available. You can find replacement key fobs in online stores and many brick-and mortar auto shops. But how do you know that the one you have bought is authentic? Are you able to tell whether it has been programmed for a different vehicle or if it could be reprogrammed to fit your vehicle? To program a new car key you must first verify that your vehicle is running. Insert the key that you wish to reprogramme into your ignition, but don't turn it. You only have a few seconds before the car's system resets commands and leaves programming mode. For this reason, it is crucial to move fast and not pause between steps. Turn off the engine to prevent this. You can test the car's system by turning the key to the “on” position, then back to the “off” position. The door locks should cycle, and you'll hear a sound that indicates that the procedure was successful. Some newer cars use a rolling key system, which prevents thieves from using stolen cars' key to open it. This feature is still vulnerable to a method known as a replay attack that allows thieves to record the signal received from the key fob of the car, then reproduce it to open the car. To prevent this, manufacturers have added a security feature called CAN bus protocol to thwart hacking attempts. Some manufacturers also use special encryption on their key fobs, that cannot be decoded with an easy program. These kinds of cars require to be programmed by a professional, and you should only try this with someone who has experience with electronics. Consult your car's manual or visit the website of the manufacturer for information on how to program it. The steps will vary depending on the type of vehicle. Transponder chips Car keys that feature transponder chips require special reconfiguration to work. While any hardware store can cut a new key for you, the real problem is to make it work with your specific car. The key you reprogrammed needs to be compatible with the exact identification number of your car or else it won't be able to start the engine. Transponder chips are a standard feature of modern automobiles and are designed to stop car theft. The chip is a microcircuit that transmits a radio-frequency signal when the ignition key is placed. The car then recognizes the signal and starts the engine in case it matches the original signal that was programmed into the vehicle. The car is also programmed so that it will stop if it detects an invalid frequency. This makes it much more difficult for novice car thieves to connect a vehicle with hot wires and then 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 generated around the transponder. This creates a signal that gets amplified by the coil which then transmits it to key's identification number. The key's identification number is returned to the car and the engine is started when the identification number matches. There are a few different methods to program a transponder keys, however, they all require a special tool. You can purchase these tools on the internet or at many locksmiths in the automotive industry. These tools are not expensive, but they are essential for programming the chip in your car. You may also use a reprogrammable key that was previously programmed for an alternative vehicle. In this case, you'll need to make sure that the key is not damaged or that the transponder has been altered in any way. To accomplish this, you'll need scanners or a computer equipped with a USB port to read the chip and determine its identity. The process of reprogramming an transponder's key is easy, but it will require specialized software and a scan tool. If you're a beginner, it's best to seek out the help of an auto locksmith. Avoid buying used keys because they might 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 other alternative than to visit a dealership to get their key connected to the vehicle. It is because for modern keys to function they must be “paired”. This required expensive and complex equipment that was only available to dealers. The EZ Installer from Car Keys Express solves this problem for retailers and locksmiths by easing the process of connecting modern keys to vehicles. The Easy Installer, a straightforward “plug-and-play” OBD device, pairs new keys with vehicles without the need for complicated equipment or tokens for programming. It connects directly to the standard OBD port of the vehicle, and runs a mobile application to provide easy to follow instructions. The EZ Installer is compatible with all modern vehicles that include proximity keys or push-button start. Go to the compatibility guide on Tom's website to see whether your vehicle is compatible. If the device fails to program a remote or key purchased from Tom's into a compatible vehicle, a full refund is offered. In contrast to traditional programming equipment, which costs key retailers and professionals many thousands of dollars in “token” fees per key, the EZ Installer Pro does not charge these costs. It can be used for as long as a key professional or retailer wants. The EZ Installer also eliminates the requirement for expensive monthly service contracts and updates, meaning that it could reduce costs for retailers while providing customers with the same high-quality service as OEM equipment. It also offers a top warranty that covers hardware and software for the rest of your 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 connect to the vehicle's immobilizer system to program new keys and remote controls. These tools can be used to make duplicate keys and make keys cloned. These tools are a valuable tool for anyone who owns an automobile. One of the most well-known tools for programming car keys is the Autel Maxisys MS906BT. The scanner for diagnostics of vehicles is compatible with the major brands and provides advanced OE features. It features a key programming feature that can backup current key data. It is also capable of resetting the immobilizer and clearing immobilizer fault codes. The OTOFIX IM1 is another important tool for reprogramming car keys. This auto diagnostic scanner has advanced functions that are OE-level and can read passwords from most major brands. It is also able to perform online calibration, customization, and reading of EEPROM. The tool is also equipped with a feature that allows it to bypass a PIN code for BMW and Mercedes. It also has the ability to read EEPROM, car MCU and CAN EEPROMs for the majority of major models. The bidirectional scanner XToolUSA is another popular choice to reprogramme vehicles. This scanner can read key information and codes from most vehicles in just a few seconds which makes it a perfect tool for auto shops as well as locksmiths. It also comes with a live test function that allows you to identify the problem quickly and effectively. While there are many different ways to reprogram a car, it is crucial to choose the right tools and know how to make use of them. Uncorrect programming can cause damage to the immobilizer of the vehicle and stop it from starting. It is recommended to consult a professional before trying to reprogram your car key. Another option is to purchase a kit that includes a key programmer, remote control key, and transponder chips. This will ensure that you are equipped with everything you require to reprogram the car key. This method takes longer and requires knowledge of soldering and electronics.