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Reprogramming Car Keys Transponder keys are said to be more secure for vehicles and more difficult to copy by thieves. The key could need to be programmed again in the event of damage or lost. You can change the key fobs you own, but you must know the correct process. For the best results you'll need the following items: Keys Almost all modern cars require some kind of transponder key or fob to operate, providing security and anti-theft protection. The keys are programmed by a locksmith or an authorized dealer to function with the car's systems and specific model. They are expensive to replace in the event of loss therefore, it is recommended to keep spare keys in the car. You will also find replacement key fobs at various online stores and in many brick-and-mortar auto shops. How can you know that the key you purchased is genuine? Can you tell if it has been programmed for a different vehicle or if it can be programmed to work with your car? If you want to program a new key the first step is to ensure that your car is running. Insert the key you want to program into the ignition without turning it. You have only a few seconds left before the system resets all commands and exits the programming mode. For this reason, it is important to be quick and not be able to wait between steps. Shut off the engine to prevent this. Change the key from “on” to “off” to test the system. The door locks should be able to cycle, and you will hear a chime to indicate that the procedure was successful. Some newer cars use a rolling key system, which prevents thieves from using stolen cars' key to start it. This feature is still vulnerable to a technique known as replay attack. It allows thieves to record and then reproduce the signal received from the key fob of the vehicle to unlock the car. To prevent this, manufacturers introduced security features known as the CAN bus protocols to stop hacking. Some manufacturers also use special encryption on their key fobs, which cannot be decoded by an easy program. You should only attempt this method if your previous experiences are with electronics. Check the manual of your car or visit the manufacturer's website for information on how to program it. The steps are different depending on the model of vehicle. Transponder chips Car keys with transponder chips require a specific reprogramming to function. Any hardware store can offer you a new car key, however the real challenge lies in implementing it to your car. The key needs to be programmed to match the exact identification number on your car, otherwise it won't start. Transponder chips, which are used to stop theft of cars, are a common feature of modern automobiles. The chip is a small microcircuit that emits a radio frequency signal when the ignition key is put in. The car then scans for the signal and starts the engine if it is in line with the original frequency that was programmed into the vehicle. The car will also shut down if a frequency is not valid. This makes it much more difficult for thieves who are not experienced to wire a vehicle and then start it. A circuit board with an induction coil connects the chip to the key. When the key is placed in the ignition, a magnetic field is generated around the transponder. This creates a signal that gets taken up by the coil, which transmits it to the key's identification number. The ID number of the key is sent back to the vehicle and if it matches the engine will begin to run. There are programming car key to program a key transponder, but each requires a special tool. You can purchase these tools online or at most automotive locksmiths. These tools are not cheap but are essential to program your car's chip. You may also make use of a transponder key that can be reprogrammed that has been previously programmed for another vehicle. In this instance you'll need sure that the key is not damaged or the transponder been altered in any way. To check this, you'll need scanners or computers equipped with a USB port to identify the chip and establish its identity. The process of reprogramming the transponder key is easy, but it will require specialized software and a scan tool. It's best to ask an auto locksmith for help if you're a novice. Also, avoid buying second-hand keys, since they are likely already programmed and will not be compatible with your car. EZ Installer In the past, car owners who wanted to replace their key fob were forced to go to an authorized dealer to get it electronically linked to the vehicle. This is because modern keys require to be “paired” to the vehicle of the owner in order to work, which required expensive and complicated equipment that only dealers had access to. The EZ Installer from Car Keys Express solves this problem for locksmiths and retailers by making it easier for connecting modern keys to 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 on the vehicle and utilizes a mobile application to provide simple to follow instructions. The EZ Installer is compatible with most newer models, including those with proximity keys or push button start. To determine if it'll be compatible with your specific vehicle, look up the compatibility guide on the Tom's website. If the device is unable to program a remote or key purchased from Tom's into a vehicle that is compatible, a full refund is available. Contrary to conventional 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 fees. It is available as long as a key professional or retailer needs. The EZ Installer also eliminates the necessity for expensive monthly service contracts and updates, meaning that it can reduce costs for retailers while providing customers with the same high-quality service as OEM equipment. It also offers an industry-leading warranty that includes all software and hardware for life. Tools Car key programming tools are used by auto technicians, locksmiths and even owners of vehicles to program new keys for their automobiles. These tools communicate with the vehicle's immobilizer in order to program new keys and remotely controlled. These tools can be used to create duplicate keys and to duplicate keys. These tools are an invaluable tool for anyone who has a vehicle. Autel Maxisys MS906BT is one of the most popular tools to program keys for cars. This vehicle diagnostic scanner is compatible with all major brands and comes with advanced OE features. It features an essential programming feature that allows you to back up current key data. It can also reset the immobilizer, or clear the fault code. Another essential tool for car key reprogramming is the OTOFIX Im1. This auto diagnostic scanner comes with advanced functions that are OE-level and can read passwords from most major brands. It can even perform online calibration and customization as well as reading EEPROM. It also comes with an option that allows it to bypass the PIN code for BMW and Mercedes. It can also read EEPROMs, car MCUs and CAN-EEPROMs of all major models. The bidirectional scanner XToolUSA is another popular choice to reprogramme vehicles. This is a wonderful tool for auto repair shops as well as locksmiths as it can read key data and codes from most vehicles within minutes. It also has an active test function that helps determine the cause quickly and effectively. There are a variety of ways to modify the car's programming. It is important to have the right tools and to understand how they work. Incorrect programming could cause damage to the car's immobilizer system and prevent it from starting. Before you attempt to reprogram your car's key, it's best to consult an expert. Another option is to purchase a kit that includes keys, a key programmer, remote control keys, and transponder chips. This will ensure that you're equipped with everything you need to reprogram your car's key. However, this method will take more time and requires some knowledge of electronic circuits and soldering.