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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 need to be reprogrammed when it becomes damaged or lost. You can change the programming of your key fobs at home, but you should be aware of the proper procedure. To get the best results, you must have the following items: Keys Nearly all modern vehicles require some kind of transponder fob or transponder keys to operate, providing security and anti-theft protection. These keys must be programmed to your particular vehicle and its systems by an authorized locksmith or dealer. It's expensive to replace them if they're lost, so it's a good idea to have spares available. You will also find replacement key fobs in various online stores and in a variety of brick-and-mortar automotive shops. How do you ensure that the new key fob you bought is genuine? Can you tell whether the unit is programmed to work with a different vehicle, or if it can be reprogrammed? If you are planning to program a new key the first step is to make sure that your car is operating. Insert the key you want to program into the ignition, but do not turn it. There are only a few seconds left before the system will reset all commands and leaves the programming mode. It is important that you be quick and don't be patient between each step. Stop the engine to stop this. You can test the car's security system by turning the key to the “on” position and then back to the “off” position. The door locks should cycle and you'll hear a chime signalling that the procedure was successful. Some newer vehicles use rolling keys to keep thieves from using stolen keys to open the vehicle. This technology is still vulnerable to a technique known as replay attacks which allows thieves to record the signal from the key fob of the car and then replicate it to open the car. To prevent this, manufacturers have introduced an additional security feature known as the CAN bus protocol to thwart hacking attempts. Certain manufacturers also have special encryption on their key fobs, which are not decoded by an ordinary program. You should only attempt this process if your experience is in electronic devices. It is a good idea to refer to your car's owner manual or search for the manufacturer on the internet, since the steps will differ depending on the vehicle model. Transponder chips Car keys with transponder chips require a special programming to function. Any hardware store can offer you a new car key but the real challenge is in making it work with your car. A key that has been reprogrammed will need to be matched with the specific identification number of your car, or it won't start the engine. Transponder chips, used to protect cars from theft are a standard feature of modern automobiles. The chip is a small microcircuit that emits a radio frequency signal when the ignition key is inserted. The car is able to detect the signal and begins the engine only if the signal is in line with the original that was programmed in the vehicle. The car will also shut down if a frequency is not valid. This makes it difficult for thieves with no experience to hot-wire a vehicle and then start it. A circuit board equipped with an induction coil connects the chip to the key. When the key is put in the ignition, a magnetic field is created around the transponder. This creates a signal that is taken up by the coil, which sends it to the key's identification number. The key's ID number is then sent back to the vehicle and if it is in line with the engine will begin to run. There are several ways to program a key transponder, however each requires a special tool. You can purchase these tools online or at most locksmiths in the automotive industry. These tools aren't inexpensive, but they are vital for programming the chip in your car. You could also use a resettable key that was programmed for a different vehicle. In this instance, you'll need to make sure that the key is not damaged or that the transponder has been altered in any way. You can read the chip by using a scanner or a computer that has a USB connector. Reprogramming a transponder is a simple procedure, but it requires special software. It also requires a scanner tool. It is best to consult an auto locksmith for help for those who are new to the process. It is also recommended to avoid purchasing second-hand keys, since they're likely to be programmed and will not work with your car. EZ Installer Until recently, car owners who wanted to replace their key fob had to visit an agent to have it electronically linked to the vehicle. This is because modern keys need to be “paired” to a specific vehicle in order to function in a way that required the use of expensive and complicated equipment that only dealers could access. The EZ Installer from Car Keys Express solves this issue for locksmiths and retailers by easing the process of pairing modern keys with vehicles. The Easy Installer, a straightforward “plug-and-play” OBD device, pairs new keys with vehicles without the use of complicated equipment or tokens to facilitate programming. It works by connecting directly to the vehicle's standard OBD port and utilizing a mobile app to provide easy-to-follow instructions. The EZ Installer is compatible with the majority of newer models that include proximity keys or push button start. To determine if it'll work with a specific vehicle, refer to the compatibility guidelines on Tom's site. 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 that costs retailers and key professionals thousands of dollars with typical per-key “token” fees, the EZ Installer Pro doesn't charge any fees, so it can be used for as long as a retailer or key professional would like it to be. The EZ Installer also eliminates the need for costly monthly service agreements and updates, which means it will save retailers money while providing the same quality service as OEM equipment. It also comes with a renowned warranty that covers both hardware and software for the remainder of your life. You can also learn more about Car key programming tools can be used by locksmiths, auto technicians and even owners of vehicles to program new keys for their automobiles. These tools connect to the vehicle's immobilizer system to program new keys and remote controls. They can also be used to copy existing keys and create duplicate keys. These tools are a valuable tool for anyone who owns a vehicle. Autel Maxisys MS906BT is one of the most popular tools for programming car key s. This scanner for vehicle diagnostics provides advanced features OE-level and is compatible with the majority of the major brands. It also comes with a key programming function and can backup the most recent important information. It also has the capability of resetting the immobilizer and clearing fault codes. Another important tool to reprogramme car keys is the OTOFIX IMM1. This auto diagnostic scanner is able to read passwords from all major brands, and it comes with advanced features that are OE-level. It also has the ability to perform online calibration, customization, and reading of EEPROM. The tool also has an option to bypass a BMW or Mercedes PIN code. It is also able to read EEPROM, car MCU and CAN EEPROMs for all major models. The Bidirectional scanner XToolUSA is a popular choice to reprogramme vehicles. This scanner can read codes and key information from most vehicles within a few seconds and is a fantastic tool for auto shops and locksmiths. It also features an active test feature that allows you to identify the issue quickly. There are many ways to reprogram your car. It is important to have the right tools, and to know how they work. Incorrect programming can cause damage to the vehicle's immobilizer system and stop it from starting. Before attempting to reprogram your car's key, it is best to consult with a professional. You can also purchase a kit which includes keys, a key programmer, remote control key and transponder chip. This will help ensure that you have everything you need to reprogram your car key. However, this method takes longer and requires a basic understanding of electronics and soldering.