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Reprogramming Car Keys Transponder keys are said to be more secure for cars and are more difficult to copy by thieves. A key may have to be reprogrammed in case of damage or lost. You can change the programming of your key fobs at home, but you need to be aware of the proper procedure. You must have these things to get the most effective results: Keys Most modern vehicles require a transponder fob or transponder keys to work, which provides security and protection against theft. The keys are programmed by a locksmith or authorized dealer to function with the car's systems and specific model. They are expensive to replace if lost, so it is recommended to keep spare keys in the car. You will also find replacement key fobs on various websites and in many brick-and mortar auto shops. But how can you tell that the new one you have bought is authentic? Are you able to tell whether it was programmed for another car or if it can be programmed to work with your car? To program a new car keys, first make sure that your vehicle is running. Insert the key you'd like to program into the ignition, but do not turn it. You only have just a few seconds before the car's system resets the commands and exits programming mode. It is important that you be quick and don't wait between each step. To prevent this from happening, turn off the engine. You can test the system of your car by turning the key to the “on” position and then back to the “off” position. The door locks should be able to cycle, and you'll hear a chime to indicate that the process has been successful. Certain newer vehicles have rolling key technology, which stops thieves from using stolen cars' key to open it. The technology is still susceptible to a technique dubbed replay attacks, which allows thieves to record the signal of the key fob of the car and then replicate it to open the car. To counter this, manufacturers have introduced a security feature called the CAN bus protocol to prevent hacking attempts. Certain manufacturers employ a specific encryption on their keys, which cannot be decoded using an ordinary program. These types of vehicles require to be programmed by a professional. Therefore, you should only try this with someone who has experience with electronics. It is recommended to consult your car's owner manual or search for the manufacturer online, as the steps will differ depending on the vehicle type. Transponder chips Car keys that feature transponder chips require a special reprogramming to work. While any hardware store can cut keys for you, the real problem is to make it work with your specific car. The key you reprogrammed needs to be compatible with the exact identification number of your vehicle otherwise it won't even start the engine. Transponder chips, used to protect cars from theft, are a common feature of modern automobiles. The chip is a microcircuit that transmits a radio frequency signal when the key is put in the ignition. The car is able to detect the signal and begins the engine only if the signal is in line with the original one that was programmed into the vehicle. The car is also programmed so that it will stop when it detects an incorrect frequency. This makes it much harder for novice car thieves to wire a vehicle and then start it. A circuit board with an induction coil that connects the key to the chip. When the key is put in the ignition, a magnetic field is generated around the transponder. This creates a signal that gets absorbed by the coil, which then transmits it to key's identification number. The ID number of the key is sent back to the vehicle and if it matches the engine will start. There are many ways to program a transponder, however each requires a special tool. You can buy these tools online or from most automotive locksmiths. These tools aren't cheap but are essential to program your car's chip. You could also use a unreprogrammable key that was programmed for a different vehicle. In this case, ensure that the key has not been damaged or the transponder isn't altered in any way. You can read the chip by using a scanner or a computer that has the USB connector. Reprogramming an transponder's key is simple, but it requires an expertly designed software and scan tool. It is recommended to contact an auto locksmith for help if you're a novice. Don't buy used keys since they could already be programmed, and they won't be compatible with your vehicle. EZ Installer For a long time, owners of cars who required replacement of their key fob had no alternative than to visit a dealership to have their key paired to the vehicle. This is because in order to make modern keys work they have to 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 for retailers and locksmiths. The EZ Installer is a simple, “plug and play” OBD device that connects new keys to vehicles, without the need for complicated equipment or programming tokens. It connects 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 vehicles that have proximity keys or push button start. Check car key programming at Tom's website to see whether your vehicle is compatible. A full-money-back guarantee is provided in the event that the device fails to successfully program a key or remote purchased from Tom's for a vehicle compatible. In contrast to traditional programming equipment, which can cost key professionals many thousands of dollars in “token” fees per key, the EZ Installer Pro does not charge these costs. It is available for as long as the key professional or retailer wants. The EZ Installer also eliminates the necessity for expensive monthly service agreements and updates, which means it could reduce costs for retailers while providing the same quality service as OEM equipment. It also offers a top warranty that covers both hardware and software for the remainder of your life. Tools Car key programming tools are used by auto technicians, locksmiths and owners of vehicles to program new keys for their vehicles. These tools connect to the immobilizer of the vehicle to program new keys and remote controls. reprogram car key can be used to create duplicate keys and clone keys. These tools are a useful tool for those who own a car. Autel Maxisys MS906BT is among the most popular tools for programming car keys. This scanner for vehicle diagnostics offers advanced OE-level features and is compatible with most of the top brands. It has an important programming feature and can back up current key data. It can also reset the immobilizer or clear immobilizer fault codes. The OTOFIX IM1 is another important tool for reprogramming car keys. This auto diagnostic scanner has advanced functions that are OE-level and can read passwords from most major brands. It also performs online calibration and customization as well as reading EEPROM. The tool comes with an option that allows it to bypass the PIN code for BMW and Mercedes. It also has the ability to read EEPROMs, car MCUs and CAN-EEPROMs for all major models. The Bidirectional scanner XToolUSA is a popular choice for reprogramming vehicles. This is a wonderful tool for auto repair shops and locksmiths since it can read key codes and other data from all vehicles in just a few seconds. It also has a live test feature that can help find the problem quickly. There are a myriad of ways to reprogram a car, it is important to use the right tools and to know how to make use of them. A mistake in programming could cause damage to the immobilizer on the vehicle and stop it from starting. Before attempting to reprogram your car key, it is best to seek advice from a professional. 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 everything you need to reprogram the car key. This process is more time-consuming and requires expertise in soldering and electronic devices.