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Reprogramming Car Keys Transponder keys for car keys are believed to make vehicles safer and are harder for thieves to duplicate. However, keys may need to be reprogrammed in the event that it is damaged or lost. You can program key fobs yourself, but you must know the proper procedure. You should have these items to achieve the most effective results: Keys Nearly all modern vehicles require some kind of transponder key or fob in order to work, which provides security and anti-theft protection. These keys are programmed by a locksmith or authorized dealer to work with your car's systems and the specific model. They are expensive to replace if they are lost, so you should keep extras handy. You can purchase replacement key fobs in online stores as well as many brick and mortar auto shops. But how do you know that the new one you purchased is authentic? Can you tell whether the unit has been programmed to work with a different vehicle, or if it can be programmed again? If you want to program a new key the first step is to ensure that your vehicle is operating. Insert the key you wish to reprogram into the ignition, but do not turn it. There are just a few minutes before the system will reset all commands and exits the programming mode. It is essential to move quickly and don't be patient between each step. To avoid this happening, shut off the engine. You can check the car's system by turning the key to the “on” position, then back to the “off” position. There should be a chime signalling that the procedure was successful. The door locks will go through a cycle. Certain vehicles of recent years use rolling key technology to prevent thieves from using stolen keys to open the car. This technology is still vulnerable to a technique known as replay attack that allows thieves to record the signal of the key fob of the car and reproduce it later to open the car. To counter this, manufacturers have added a security feature called CAN bus protocol to thwart attacks on hacking. Certain manufacturers have a unique encryption on their keys, which cannot be decoded using a simple program. You should only attempt this process if your experience is in electronic devices. It is recommended to read the owner's manual for your car or search for the manufacturer on the internet, since these steps vary by car model. Transponder chips Transponder chip car keys require a specific 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. The key must be programmed to match the exact identification number on your car, otherwise it won't be able to start. Transponder chips, used to protect cars from theft are a standard feature of modern cars. The chip is a microcircuit which transmits a radio frequency signal when the key is inserted into the ignition. The car detects the signal and starts the engine only if the signal is in line with the one programmed in the vehicle. The car will also shut down if a frequency is invalid. This makes it much more difficult for car thieves with no experience to hot 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 placed in the ignition it creates a magnetic field created 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 number is sent back to the car and the engine is started when the identification number matches. There are several ways to program a transponder, but all require the use of a specific tool. These tools can be bought through the internet or from many automotive locksmiths. They're not cheap, but they're crucial for programming the chip into your car. You may also use a resettable key that was programmed for a different vehicle. In this scenario, ensure that the key hasn't been damaged or that the transponder is not altered in any way. To do this, you can use a scanner or a computer with an USB port to scan the chip and determine its identity. The process of reprogramming the transponder key is easy, but it will require special software and a scanning tool. If you're just beginning it is recommended to seek out the help of an auto locksmith. Also, avoid buying G28 Car Keys -hand keys, since they are likely already programmed and won't work with your car. EZ Installer Until recently the time when car owners wanted to replace their key fob had to visit an authorized dealer to get it electronically paired with the vehicle. This is because, in order to make modern keys function, they need to 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 locksmiths and retailers by easing the process of connecting modern keys to vehicles. 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 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 include proximity keys or push button start. Check the compatibility guide at Tom's site to see whether your vehicle is compatible. A full money-back guarantee is offered in the event that the device fails to successfully program a key or remote purchased from Tom's for a vehicle compatible. Contrary to conventional programming equipment which can cost key professionals many thousands of dollars in “token” fees per key, the EZ Installer Pro does not charge these fees. It can be used for as long as a key professional or retailer needs. The EZ Installer also eliminates the need for costly monthly service contracts and updates, meaning that it can save retailers money while offering customers the same high-quality service as OEM equipment. It also comes with a world-class warranty that covers all hardware and software for the duration of its life. Tools Locksmiths, auto mechanics and even owners of vehicles can use car key programming tools to program new keys for vehicles. These tools communicate with the vehicle's immobilizer in order to program new keys and control them remotely. They can also be used to clone existing keys and create duplicates. These tools are an essential tool for anyone who owns a car. Autel Maxisys MS906BT is among the most popular tools for programming car keys. This vehicle diagnostic scanner has advanced features that are OE-grade and is compatible with all of the top brands. It comes with a key programming feature and can backup current key data. It also resets the immobilizer or clear immobilizer fault code. Another essential tool to reprogramme car keys is the OTOFIX Im1. This auto-diagnostic scanner has advanced OE-level functions and can read passwords from all major brands. It can even perform online calibration and customization as well as reading of EEPROM. The tool is also equipped with an option that allows it to bypass a PIN code for BMW and Mercedes. It can also read EEPROM, car MCU and CAN EEPROMs for the majority of major models. The XToolUSA bidirectional scanner is another popular choice to reprogramme vehicles. This is a wonderful tool for auto repair shops as well as locksmiths because it can read key codes and other data from the majority of vehicles in a matter of minutes. It also has an active test feature that helps find the problem quickly. There are many ways to reprogram your car. It is crucial to have the proper tools and to understand how they function. Incorrect programming can cause damage to the car's immobilizer system and stop it from working. Before you attempt to reprogram your car key, it's best to consult a professional. Another option is to purchase a kit that includes the key programmer, a remote control keys, and transponder chips. This will ensure that you have everything you need to reprogram your car key. This process is more time-consuming and requires knowledge of soldering and electronic devices.