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Reprogramming Car Keys Transponder keys are believed to be more secure for vehicles and more difficult to copy by thieves. The key could need to be reprogrammed in case of damage or lost. You can change the key fobs you own however, you must be aware of the correct process. reprogram car keys should have these items to achieve the most effective results: Keys Most modern cars require a transponder key to operate. This provides security and anti-theft protection. The keys are programmed by a locksmith or authorized dealer to work with your car's systems and the specific model. They can be costly to replace if lost and 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. But how can you tell that the new one you purchased is genuine? Are you able to tell whether the unit has been programmed to work with a different vehicle or if it could be programmed again? If you want to program an entirely new key, the first step is to make sure that your car is on and running. Insert the key you'd like to program into the ignition, but do not turn it. You have just a few minutes before the system will reset all commands and leaves the programming mode. It is important that you be quick and don't delay between each step. To prevent this from happening, shut off the engine. You can check the system of your car by turning the key to the “on” position and back to the “off” position. The door locks should cycle and you will hear a sound that indicates that the process was successful. Certain vehicles of recent years use rolling keys to keep thieves from using stolen keys to open the vehicle. This feature is still vulnerable to a technique dubbed replay attack which allows thieves to record the signal of the key fob of the car and reproduce it later to unlock the car. To prevent this, manufacturers added security features known as the CAN bus protocols to stop hacking. Certain manufacturers also have special encryption on their key fobs, that cannot be decoded with a simple program. These types of cars require programming by a professional, and you should only try this if you have experience working with electronic devices. It is a good idea to consult your car's owner manual or search for the manufacturer online, as the steps differ based on car model. Transponder chips Car keys with transponder chips require a special reprogramming to work. While any hardware store can cut a new key for you, the main problem is to make it work with your specific car. A reprogrammed key 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 are a common feature of modern automobiles and are designed to prevent car theft. The chip is a microcircuit which transmits a radio frequency signals when the key is placed in the ignition. The car then detects the signal and then starts the engine if it is in line with the original one that was programmed into the vehicle. The vehicle is also programmed to stop if it detects an invalid frequency. This makes it difficult for thieves with no experience to hot-wire a vehicle and then turn it on. A circuit board that has an induction coil connects the chip to the key. When the key is inserted into the ignition, it creates an electromagnetic field around the transponder. This generates a signal that is amplified by the coil which transmits it to the key's identification number. The key's identification number is transmitted back to the car and the engine is started if the identification number matches. There are several methods to program a transponder keys, but they all involve using a special tool. These tools can be bought through the internet or from many automotive locksmiths. These tools aren't cheap but are essential for programming your car's chip. You can also make use of a transponder key that can be reprogrammed that was previously programmed for a different vehicle. In this instance, you must make sure that the key has not been damaged or the transponder is not altered in any way. To accomplish this, you can use scanners or computers with a USB port to identify the chip and establish its identity. Reprogramming an transponder is a simple process, but requires special software. It also requires an scanner tool. It's best to ask an auto locksmith for help if you're a novice. Avoid buying used keys as they may already be programmed and will not work with your vehicle. EZ Installer Prior to recently the time when car owners wanted to replace their key fob were forced to go to an agent to have it electronically paired with the vehicle. This is because modern keys have to be “paired” to a specific vehicle to work and work, which required expensive and complex equipment that only dealers had access to. The EZ Installer from Car Keys Express solves this issue for retailers and locksmiths by easing the process of pairing modern keys with vehicles. The EZ Installer is a simple, “plug and play” OBD device that pairs new keys to vehicles, without the need for complex equipment or programming tokens. It connects directly to the standard OBD port of the vehicle and uses an app that can be downloaded on mobile devices to provide easy to follow instructions. The EZ Installer is compatible with all modern vehicles, including those 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 offered if the device does not successfully program a key or remote purchased from Tom's for a vehicle that is compatible. Unlike traditional programming equipment, which costs retailers and key professionals hundreds of thousands of dollars in “token” fees per key, the EZ Installer Pro does not charge these costs. It is able to be used for as long as a key professional or retailer needs. The EZ Installer also eliminates the requirement for expensive monthly service agreements and updates, which means it can save retailers money while still providing the same quality service as OEM equipment. It also offers a top warranty that covers hardware and software for the rest 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 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 duplicates. These tools are an essential tool for anyone who owns a vehicle. Autel Maxisys MS906BT is one of the most popular tools to program car keys. This scanner for vehicle diagnostics has advanced features that are OE-grade and is compatible with most of the major brands. It has a key programming feature and can backup current key data. It is also capable of resetting the immobilizer and clearing 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 all major brands. It also has the ability to perform online calibration, customization and reading EEPROM. The tool comes with the ability to bypass the PIN code of BMW and Mercedes. It can also read EEPROMs, car MCUs and CAN-EEPROMs for most major models. The Bidirectional scanner XToolUSA is a popular option for reprogramming vehicles. This is a fantastic tool for auto repair shops and locksmiths since it can read codes and key data from the majority of vehicles in a matter of minutes. It also has an active test function that allows you to identify the problem quickly and effectively. There are a myriad of ways to modify the car's programming. It is essential to have the proper tools, and to know how they work. Incorrect programming can cause damage to the vehicle's immobilizer system and prevent it from starting. It is recommended to seek advice from a professional prior to trying to reprogram your car key. Another option is to buy 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 method, however, will take more time and requires some knowledge of electronic circuits and soldering.