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Reprogramming Car Keys Transponder keys are believed to be more secure for vehicles and more difficult to copy by thieves. A key may have to be reprogrammed in the event that it is damaged or lost. You can change the programming of your key fobs at home, but you must know the right process. You must have these things to achieve the most effective results: Keys Most modern cars require a transponder key in order to operate. This provides security and anti-theft protection. These keys are programmed by a locksmith or authorized dealer to work with your car's system and specific model. They can be costly to replace in the event of loss and it is recommended to keep spare keys in the car. You can also find replacement key fobs at various online stores and in a variety of brick-and-mortar automotive shops. How can you be sure that the key you purchased is genuine? Can you tell whether the unit has been programmed to work with another vehicle or if it could be programmed again? To program a new car keys, first make sure that your vehicle is running. Insert the key you want to program into the ignition, but don't turn it. There are just a few minutes before the system resets all commands and then exits the programming mode. This is why it is important to move fast and not wait between steps. 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. There should be a chime signalling that the procedure was successful. The door locks will cycle. Certain newer vehicles utilize rolling keys to keep thieves from using stolen keys to start the vehicle. This technology is still vulnerable to a method known as a replay attack that allows thieves to record the signal from the key fob of the car and then replicate it to unlock the car. To counter this, manufacturers have introduced a security feature called CAN bus protocol to prevent attacks on hacking. Certain manufacturers also employ special encryption on their key fobs, that cannot be decoded with an ordinary program. You should only attempt this process if your experience is in electronic devices. Check the manual of your car or go to the manufacturer's website to learn how to program it. The steps will vary depending on 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 biggest issue is how to integrate it to work with the specific car you own. A key that has been reprogrammed will need to be matched with the specific identification number of the vehicle or else it won't be able to start the engine. Transponder chips, used to stop theft of cars are a standard feature of modern cars. The chip is a small microcircuit which transmits a radio-frequency signal when the ignition key is placed. The car can detect the signal and begins the engine only if it matches the original one that was programmed into the vehicle. The car also shuts down if the frequency is invalid. This makes it much harder for thieves who are not experienced 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 put in the ignition the magnetic field is generated around the transponder. This produces a signal which is absorbed by the coil, which sends it to the key's identification number. The key's identification number is returned to the car, and the engine starts when the identification number is in line with. There are several methods to program a transponder key, however, they all require an instrument that is specifically designed for the purpose. You can buy these tools on the internet or at many automotive locksmiths. These tools are not expensive, but they are essential for programming the chip in your car. You can also use an unreprogrammable key that was programmed for a different vehicle. In this instance you'll need sure that the key has not been damaged or the transponder has been 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. Reprogramming a transponder key is quite simple, but it requires an expertly designed software and scan tool. If you're just beginning you should seek the assistance of an auto locksmith. Avoid buying used keys as they could already be programmed and won't be compatible with your vehicle. EZ Installer Until recently the time when car owners wanted to replace their key fob were forced to visit an agent to have it electronically paired with the vehicle. It is because for modern keys to function they must be “paired”. This required expensive and complex equipment that was only available to dealers. The EZ Installer by Car Keys Express simplifies the process of pairing modern keys with vehicles used by locksmiths and retailers. The EZ Installer, a simple “plug-and-play” OBD device, pairs new keys with vehicles without the need for complicated equipment or tokens to facilitate programming. It connects directly to the standard OBD port on the vehicle, and runs an application that is mobile to provide easy to follow instructions. The EZ Installer works with all newer vehicles that have proximity keys or push button start. Check the compatibility guide at Tom's site to see whether your vehicle is compatible. If the device fails to program a remote or a key purchased from Tom's into a compatible vehicle, a full refund is available. In contrast to traditional programming equipment that costs key professionals thousands of dollars with typical per-key “token” charges, the EZ Installer Pro doesn't charge any fees, so it can be used for as long as a retailer or key professional wants it to be. The EZ Installer also eliminates the necessity for expensive monthly service agreements and updates, which means it could reduce costs for retailers while offering customers the same high-quality service as OEM equipment. It also comes with an industry-leading warranty that includes all software and hardware for the duration of its life. Tools Car key programming tools can be used by locksmiths, auto technicians and even owners of vehicles to programme new keys for their vehicles. These tools connect to the vehicle's immobilizer system to create new keys and remote controls. They can also be used to copy existing keys and create duplicate keys. These tools are a useful tool for those who own a car. One of the most admired tools for programming keys to cars is the Autel Maxisys MS906BT. The scanner for diagnostics of vehicles offers advanced OE-level features and is compatible with most of the top brands. It features a key programming feature that allows you to backup the current key information. It is also capable of resetting the immobilizer and clearing fault codes. Another essential tool for reprogramming car keys is the OTOFIX IM1. This auto diagnostic scanner is able to read passwords for all major brands, and it comes with advanced features that are OE-level. It can also perform online calibration, customization, and EEPROM reading. The tool comes with the ability to bypass a PIN code for BMW and Mercedes. It is also able to read EEPROMs, car MCUs, and CAN-EEPROMs for all major models. transponder key programming is another popular option for reprogramming vehicles. This is a fantastic tool for auto repair shops as well as locksmiths as it can read key data and codes from all vehicles in just a few seconds. It also has an active test function that helps find the issue quickly and effectively. While there are many different ways to reprogram your car, it is essential to use the right tools and to know how to use them. Incorrect programming could cause damage to the car's immobilizer system and stop it from working. Before you attempt to reprogram your car key, it is best to consult a professional. Another option is to purchase the kit that comes with keys, a key programmer, remote control key, as well as transponder chips. This will ensure that you have everything you need to reprogramme your car key. This method takes longer and requires knowledge of soldering and electronics.