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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 reprogrammed in the event that it is damaged or lost. You can program key fobs yourself however, you must be aware of the proper procedure. You should have these items to ensure the most effective results: Keys Almost all modern cars require a transponder key or fob in order to operate, ensuring security and anti-theft protection. The keys are programmed by a locksmith or authorized dealer to function with your car's systems and the specific model. They can be costly to replace in the event of loss therefore, it is recommended to keep spare keys in the car. You can also find replacement keys fobs at various online stores and in many brick-and-mortar auto shops. How can you be sure that the one you bought is authentic? Do you know whether the unit is programmed to work with a different vehicle or if it could be reprogrammed? If you are planning to program a new key the first step is to ensure that your vehicle is operating. Insert the key you wish to reprogramme into your ignition, but do not turn it. You will only have a couple of seconds before the car's system reverts the commands and exits programming mode. It is important that you move quickly and do not wait between each step. To prevent this from happening, turn off the engine. You can test the car's system by turning the key to the “on” position, then back to the “off” position. You should hear a sound indicating that the process was successful. The door locks will be able to cycle. Some newer vehicles use rolling key technology to prevent thieves from using stolen keys to open the vehicle. This feature is still vulnerable to a technique known as replay attacks that allows thieves to record the signal of the vehicle's key fob, then reproduce it to open the car. To counter this, manufacturers have introduced a security feature called the CAN bus protocol to stop attacks on hacking. Certain manufacturers also have special encryption on their key fobs, that cannot be decoded with an ordinary program. You should only try this method if your previous experience is with electronics. It is a good idea to read your car's owner manual or look up the manufacturer on the internet, since the steps differ based on vehicle type. Transponder chips Transponder chip car keys require special reprogramming in order to work. Any hardware store can give you a new car key but the real challenge is in implementing it to your car. The key you reprogrammed needs to match the specific identification number of your car, or it won't start the engine. Transponder chips, used to stop theft of cars are a standard feature of modern automobiles. The chip is a microcircuit which transmits a radio-frequency signal when the ignition key is placed. The car is able to detect the signal, and starts the engine only if the signal matches the original one that was programmed in the vehicle. The car is also programmed so that it will shut down if it detects an invalid frequency. This makes it much more difficult for thieves who are not experienced to wire a vehicle and then start it. A circuit board equipped with an induction coil that connects the key to the chip. When the key is inserted into the ignition it creates an electric field around the transponder. This creates a signal that is absorbed by the coil, which then transmits it to key's identification number. The key's ID number is transmitted back to the vehicle, and if it matches, the engine will begin to run. There are a variety of ways to program a transponder, but all of them require a special tool. These tools are available online or from most automotive locksmiths. They are not cheap, but they are crucial for programming the chip to your car. You can also use an unreprogrammable key that was programmed for another vehicle. In this case, you'll need to make sure that the key isn't damaged or the transponder been altered in any way. To accomplish this, you'll need scanners or a computer with an USB port to read the chip and determine its identity. Reprogramming the transponder is a straightforward procedure, but it requires specific software. G28CarKeys requires a scanner tool. It's best to ask an auto locksmith for help in case you're not an expert. It is also recommended to avoid purchasing second-hand keys, since they are likely already programmed and will not work with your car. EZ Installer In the past those who wanted to replace their key fob were forced to go to an agent to have it electronically linked to the vehicle. This is because modern keys have to be “paired” to the vehicle of the owner in order to function, which required the use of expensive and complicated equipment that only dealers had access to. The EZ Installer by Car Keys Express simplifies the process of pairing up modern keys with vehicles used by locksmiths and retailers. The EZ Installer is a basic, “plug and play” OBD device that pairs new keys to vehicles, without the need for complicated equipment or programming tokens. It works by connecting directly to the vehicle's standard OBD port and utilizing an app for mobile devices to provide simple-to-follow instructions. The EZ Installer is compatible with most newer vehicles that have proximity keys or push button start. Visit the compatibility guide on Tom's website to determine if your vehicle is compatible. A full-money-back guarantee is provided in the event that the device fails to 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 as long as a key professional or retailer wants. The EZ Installer also eliminates the need for costly monthly service contracts and updates, meaning that it can save retailers money while still offering customers the same high-quality service as OEM equipment. It also offers a leading warranty that covers both hardware and software for the duration of your life. You can also find out more about Locksmiths, auto mechanics, and even owners of vehicles can use car key programming tools to program new keys for cars. These tools 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 duplicate keys. These tools are an essential tool for those who own a car. Autel Maxisys MS906BT is one of the most sought-after tools for programming keys for cars. The scanner for diagnostics of vehicles provides advanced features OE-level and is compatible with the majority of the top brands. It also comes with a key programming function and is able to backup the most recent important data. It is also capable of resetting the immobilizer as well as clearing immobilizer fault codes. Another important tool to reprogramme car keys is the OTOFIX IMM1. This auto diagnostic scanner is able to read passwords for all major brands, and it comes with advanced OE-level features. It also has the ability to perform online calibration, customization, and EEPROM reading. The tool is also equipped with an option that allows it to bypass the PIN code for BMW and Mercedes. It can also read EEPROMs, car MCUs and CAN-EEPROMs of all major models. The XToolUSA Bidirectional Scanner is another popular choice for reprogramming vehicles. It can read codes and key information from most vehicles in a few seconds and is a fantastic tool for auto shops and locksmiths. It also features an active test function that can help identify the problem quickly and effectively. While there are many different ways to reprogram a car, it is crucial to select the appropriate tools and to know how to make use of them. Incorrect programming may damage the vehicle's immobilizer and prevent it from beginning. Before attempting to program your car key, it is recommended to consult with a professional. You can purchase a kit that includes the key programmer, a remote control key, and transponder chip. This will ensure that you have everything you need to reprogram your car key. However, this process will take longer and requires some knowledge of electronics and soldering.