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Reprogramming Car Keys Car keys with transponders are thought to keep vehicles more secure and more difficult for thieves to duplicate. Keys may need to be reprogrammed in case of damage or lost. You can change the key fobs you own, but you must know the correct procedure. You should have these items to get the best results: Keys Most modern vehicles require a transponder key or fob to operate, providing security and anti-theft protection. The keys are programmed by a locksmith or an authorized dealer to work with the car's systems and the specific model. They are costly to replace if lost, so you should have spares in your car. You can find key fobs that can be replaced in online stores as well as numerous brick-and-mortar auto shops. But how do you know that the key fob you bought is genuine? Do you know whether the unit is programmed to work with a different vehicle, or if it can be reprogrammed? If you're looking to program an entirely new key the first step is to ensure that your vehicle is running. Insert the key you want to program into the ignition without turning it. You only have just a few seconds before the car's system resets the commands and leaves programming mode. It is crucial to move quickly and do not wait between each step. To prevent this from happening, shut off the engine. Switch the key from “on” to “off” to test the system. You should hear a sound to indicate that the process was successful. The door locks will cycle. Certain newer vehicles have rolling key system, which prevents thieves from using stolen cars' key to open it. This feature is still vulnerable to a technique known as replay attack which allows thieves to record the signal of the key fob of the car and reproduce it later to open the car. To stop this, manufacturers introduced a security feature known as the CAN bus protocols to stop hackers from gaining access to the vehicle. Certain manufacturers also employ special encryption on their key fobs, which are not decoded by an ordinary program. You should only try this process if your experience is with electronics. It is a good idea to refer to the owner's manual for your car or search for the manufacturer on the internet, since the steps will differ depending on the car model. Transponder chips Car keys with transponder chips require a special reprogramming to work. While any hardware store can cut keys for you, the main challenge is making it function to work with the specific car you own. A key that has been reprogrammed will need to be compatible with the exact identification number of your car otherwise it won't even start the engine. Transponder chips are a standard feature of modern automobiles and are designed to guard against car theft. The chip is a microcircuit that emits a radio frequency signal when the key is inserted in the ignition. The car then detects the signal and starts the engine if it matches the original frequency that was programmed into the vehicle. The car also shuts down if a frequency is invalid. This makes it more difficult for car thieves with no experience to wire a vehicle and then start it. A circuit board that has an induction coil connects the key to the chip. When the key is placed in the ignition it creates a magnetic field generated around the transponder. This creates a signal which is received by the coil before being sent to the key identification number. The key's identification code is transmitted back to the car and the engine will start when the identification number is in line with. There are a few different ways to program a transponder key however, they all require a special tool. These tools can be bought online or from most automotive locksmiths. These tools are not inexpensive, but they are vital for programming the chip in your car. You could also use a resettable key that was programmed for an alternative vehicle. In this case you'll need to make sure that the key has not been damaged or the transponder has been altered in any way. To accomplish this, you can use scanners or computers with an USB port to scan the chip and determine its identity. Reprogramming an transponder is a simple procedure, but it requires specific software. It also requires an scanner tool. If you're new to the process it is recommended to seek the assistance of an auto locksmith. Avoid buying used keys as they could already be programmed and will not work with your car. EZ Installer For a long time, owners of cars who required replacement of their key fob had no other alternative than to visit a dealership to have their key paired to the vehicle. This is because modern keys require to be “paired” to a specific vehicle in order to function, which required the use of expensive and complex equipment that only dealers had access to. The EZ Installer by Car Keys Express simplifies the process of pairing up modern keys to vehicles for retailers and locksmiths. The Easy Installer is a straightforward, “plug and play” OBD device that pairs new keys with vehicles without the need for complex equipment or programming tokens. It connects directly to the standard OBD port on the vehicle and uses a mobile application to provide simple to follow instructions. The EZ Installer is compatible with most newer vehicles that include proximity keys or push button start. Go to reprogramming car keys on Tom's website to see whether your vehicle is compatible. If the device fails to program the remote or key purchased from Tom's into a vehicle that is compatible, a full refund is provided. In contrast to traditional programming equipment that costs key professionals thousands of dollars in typical per-key “token” costs, the EZ Installer Pro doesn't charge any fees which means it can be used for as long as a key professional wants to use it. The EZ Installer eliminates the need for expensive monthly service contracts and software updates. This lets retailers save money while providing their customers the same top quality service as OEM equipment. It also offers a leading warranty that covers hardware and software for the duration of your life. You can also learn more about Car key programming tools are used by locksmiths, auto technicians and owners of vehicles to programme new keys for their vehicles. These tools communicate with the vehicle's immobilizer to program new keys and control them remotely. They can also be used to duplicate existing keys and create duplicates. 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 is compatible with all major brands and offers advanced OE features. It also comes with an option for key programming and is able to backup current key information. It also resets the immobilizer, or clear the fault code. Another tool that is essential for car key reprogramming is the OTOFIX Im1. This auto diagnostic scanner can read passwords for most major brands and has advanced features that are OE-level. It also allows online calibration, customization and EEPROM reading. The program also has a feature to bypass a BMW or Mercedes PIN code. It can also read EEPROM, car MCU, and CAN EEPROMs for all major models. The XToolUSA bidirectional scanner is another popular choice for reprogramming vehicles. This tool is a great tool for auto repair shops and locksmiths as it can read codes and key data from the majority of vehicles in a matter of seconds. It also features an active test feature that helps find the problem quickly. While there are many different ways to reprogram a car it is essential to use the right tools and to be aware of how to use them. Uncorrect programming can damage the vehicle's immobilizer and stop it from starting. Before you attempt to program your car key, it is recommended to seek advice from an expert. You can purchase a kit that includes the key programmer, a remote control key, and transponder chip. This will ensure that you are equipped with all the tools you need to reprogram your car key. However, this method will take more time and requires a basic understanding of electronics and soldering.