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Reprogramming Car Keys Transponder keys are believed to be more secure for cars and harder to copy by thieves. However, keys may require reprogramming when it becomes damaged or lost. automotive key programming can reprogram key fobs yourself, but you must know the proper procedure. To get the best results, you should have the following items: Keys The majority of modern vehicles require a transponder key in order to operate. This gives security and protection against theft. These keys are programmed by a locksmith or authorized dealer to function with the car's systems and the specific model. It's costly to replace them if they are lost, so it's a good idea to have spares available. You can locate key fobs to replace them in online stores and numerous brick-and-mortar auto shops. How can you ensure that the key you purchased is authentic? Do you know whether it was programmed to work with another vehicle or if it can be reprogrammed to fit your vehicle? To program a new car keys, first make sure that your vehicle is running. Insert the key you wish to reprogram into the ignition without turning it. You have only a few seconds left before the system resets all commands and then exits the programming mode. This is why it is crucial to be quick and not wait between steps. Turn off the engine to avoid this. Change the key from “on” to “off” to test the system. The door locks should cycle and you'll hear a sound that indicates that the process was successful. Some newer vehicles use rolling keys to keep thieves from using stolen keys to start the vehicle. This feature is still vulnerable to a technique called replay attack. It allows thieves to record and then reproduce the signal received from the vehicle key fob to open the car. To counter this, manufacturers have introduced a security feature called CAN bus protocol to prevent attacks on hacking. Certain manufacturers also have special encryption on their key fobs which cannot be decoded by a simple program. You should only try this method if you have experiences are with electronic devices. Consult your car's manual or look up the manufacturer's website to find out how to program it. The steps will vary according to the type of vehicle. Transponder chips Car keys with transponder chips require special programming to function. While any hardware store can cut keys for you, the main challenge is making it function with your specific car. The key has to be programmed to match the exact identification number of your car, or else it won't start. Transponder chips are a common feature of modern automobiles and are designed to guard against car theft. The chip is a tiny microcircuit which transmits a radio-frequency signal when the ignition key is inserted. The car then detects the signal and then starts the engine in case it matches the original frequency that was programmed into the vehicle. The car also shuts down if a frequency is not valid. This makes it harder for thieves who aren't experienced to hot-wire a vehicle and then turn it on. The key and the chip are connected by the circuit board which includes an induction coil. When the key is placed in the ignition, it creates an electric field around the transponder. This generates a signal, which is absorbed by the coil before being sent to the key's identification. The ID number of the key is then sent back to the vehicle, and if it matches the engine will start. There are many methods to program a key transponder, however all of them require a special tool. You can purchase these tools online or from most locksmiths for cars. These tools are not inexpensive, but they are vital to program your car's chip. You can also use a reprogrammable transponder key that has been previously programmed for a different vehicle. In this instance you'll need to make sure that the key isn't damaged or that the transponder has been altered in any way. The chip can be read with a scanner, or a computer that has an USB connector. The process of reprogramming a transponder key is quite simple, but it requires specialized software and a scan tool. It is best to consult an auto locksmith for assistance for those who are new to the process. Avoid buying used keys as they might already be programmed and will not work with your car. EZ Installer Until recently the time when car owners wanted to replace their key fob had to go to an agent to have it electronically paired with the vehicle. This is because modern keys need to be “paired” to the vehicle of the owner in order to work and work, which required expensive and complex equipment that only dealers had access to. The EZ Installer from Car Keys Express solves this problem for locksmiths and retailers by making it easier for connecting modern keys to vehicles. The EZ Installer, a basic “plug-and-play” OBD device, connects new keys to vehicles without the use of complex equipment or tokens for programming. It connects directly to the standard OBD port of the vehicle and utilizes an app that can be downloaded on mobile devices to provide easy to follow instructions. The EZ Installer is compatible with all modern vehicles that include proximity keys or push-button start. To determine if it'll work with a specific vehicle, refer to the compatibility guide on the Tom's website. A full-money-back guarantee is provided if the device does not successfully program a remote or key purchased from Tom's for a vehicle that is compatible. 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 costs. It is available for as long as a key professional or retailer requires. The EZ Installer eliminates the need for expensive monthly service contracts and software updates. This allows retailers to save money while offering their customers the same top quality service as OEM equipment. It also offers a top warranty that covers both hardware and software for the duration of your life. Tools Locksmiths, auto mechanics, and even owners of vehicles can use car key programming tools to program new keys for cars. These tools connect to a vehicle's immobilizer in order to program new keys and remotely controlled. They can also be used to duplicate existing keys and create duplicate keys. These tools are an essential tool for those who own 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 comes with advanced OE features. It comes with a key programming feature that allows you to backup the current key information. It is also capable of resetting the immobilizer as well as clearing immobilizer fault codes. The OTOFIX IM1 is an important tool for reprogramming car keys. This auto diagnostic scanner is able to read passwords for most major brands and comes with advanced features comparable to OE. It can even perform online calibration, customization, and reading of EEPROM. The program also has the ability 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 XToolUSA Bidirectional Scanner is another top choice to reprogramme cars. This tool can read key information and codes from most vehicles within a few seconds which makes it a perfect tool for auto shops and locksmiths. It also has a live test feature that helps determine the cause quickly. While there are many different ways to reprogram a car, it is important to select the appropriate tools and to be aware of how to use them. Incorrect programming can cause damage to the car's immobilizer system and prevent it from starting. It is recommended to seek advice from a professional prior to attempting to reprogram a car key. You can also purchase a kit which includes the key programmer, a remote control key and transponder chip. This will ensure that you are equipped with all the tools you require to reprogram your car's key. However, this process will take longer and requires a basic understanding of electronics and soldering.