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Reprogramming Car Keys Car keys with transponders are thought to keep cars more secure and are harder for thieves to duplicate. A key may have to be reprogrammed in event of damage or lost. You can reprogram your key fobs at home, but you must know the right process. To get the best results, you should 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. The keys must be programmed to your particular car and its systems by a certified dealer or locksmith. It's costly to replace them if they are lost, so it's best to have spares in your possession. You can purchase replacement key fobs in online stores and many brick-and mortar auto shops. How do you ensure that the one you purchased is authentic? Can you tell if the unit has been programmed to work with a different vehicle or if yours can be programmed differently? If you're looking to program a new key, the first step is to make sure that your car is on and running. Insert the key you wish to reprogramme into the ignition, but do not turn it. You have just a few minutes before the system will reset all commands and then exits the programming mode. This is why it is crucial to move fast and not wait between steps. Shut off the engine to prevent this. You can check the system of your car by turning the key to the “on” position and then back to the “off” position. You should hear a sound indicating that the process was successful. The door locks will go through a cycle. Certain vehicles of recent years use rolling keys to keep thieves from using stolen keys to open the car. This technology is still vulnerable to a technique known as replay attack, which allows thieves to record the signal from the key fob of the car and then replicate it to unlock the car. To stop this, manufacturers added a security feature known as the CAN bus protocols to ward off hackers from gaining access to the vehicle. Certain manufacturers employ a specific encryption on their keys that cannot be decoded using an easy program. These types of cars will need to be programmed by a professional, so you should only try this only if you've worked with electronic devices. Refer to the manual for your car or visit the manufacturer's website for information on how to program it. The steps will vary depending on the model of vehicle. Transponder chips Car keys with transponder chips require special reconfiguration to work. While any hardware store can cut keys for you, the biggest problem is to make it work with your specific car. A reprogrammed key will need to be matched with the exact 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 common feature of modern automobiles. The chip is a microcircuit that transmits a radio frequency signal when the key is inserted into the ignition. The car can detect the signal, and starts the engine only if the signal is in line with the original one that was programmed in the vehicle. The car also shuts down if a frequency is invalid. This makes it difficult for novice car thefts to wire a vehicle hot and then start it. A circuit board that has an induction coil that connects the chip to the key. When the key is inserted into the ignition it creates a magnetic field around the transponder. This creates a signal which is absorbed by the coil before being sent to the key's identification. The key's identification number is transmitted back to the car and the engine will start when the identification number is in line with. There are several methods to program a transponder key, however, all require a special tool. You can buy these tools online or from most locksmiths in the automotive industry. These tools aren't cheap but are essential for programming the chip in your car. You may also utilize a transponder that is reprogrammable that was previously programmed for another vehicle. In this scenario you'll need sure that the key has not been damaged or the transponder been altered in any way. You can read the chip by using a scanner or a computer equipped with an USB connector. Reprogramming a transponder is a simple procedure, but requires specialized software. It also requires a scanner tool. If you're a beginner you should seek help from an auto locksmith. Avoid buying used keys because they might already be programmed and 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 other option than to go to an auto dealer to have their key linked to their vehicle. This is because modern keys require to be “paired” to a specific vehicle in order to work, which required expensive and complex equipment that only dealers had access to. The EZ Installer from Car Keys Express solves this issue for locksmiths and retailers by making it easier for pairing modern keys with vehicles. The Easy Installer is a straightforward, “plug and play” OBD device that connects new keys to vehicles, without the need for expensive equipment or programming tokens. It connects directly to the standard OBD port on the vehicle and uses an app that can be downloaded on mobile devices to provide easy to follow instructions. The EZ Installer works with most modern vehicles that include proximity keys or push-button start. To determine if it'll work for a particular vehicle, refer to the compatibility guide on Tom's website. If the device is unable to program the remote or key purchased from Tom's into a vehicle that is compatible the full refund will be available. Contrary to conventional programming equipment that costs retailers and key professionals thousands of dollars through typical per-key “token” charges, the EZ Installer Pro doesn't charge any fees which means it can be used for as long as a retailer or key professional wishes to use it. The EZ Installer eliminates the need for expensive monthly service contracts and software updates. This lets retailers save money while providing their customers the same top quality service as OEM equipment. It also comes with a world-class warranty that includes all software and hardware for life. Tools Locksmiths, auto mechanics, and owners of vehicles can utilize car key programming tools to create new keys for vehicles. These tools communicate with the vehicle's immobilizer in order to program new keys and remotely controlled. They can also be used to copy existing keys and create duplicate keys. These tools are an essential tool for anyone who owns an automobile. One of the most admired tools for programming keys to cars is the Autel Maxisys MS906BT. This scanner for vehicle diagnostics has advanced features that are OE-grade and is compatible with all of the major brands. It also includes the ability to program keys and can backup the most recent important data. It also resets the immobilizer or clear immobilizer fault codes. Another tool that is essential for re programming car keys is the OTOFIX Im1. This auto diagnostic scanner has advanced functions comparable to OE and can read passwords from all major brands. It can even perform online calibration and customization as well as reading EEPROM. It also comes with the ability to bypass a BMW or Mercedes PIN code. It can also read EEPROM, car MCU and CAN EEPROMs for all major models. The XToolUSA Bidirectional Scanner is another option for reprogramming vehicles. This tool can read key information and codes from most vehicles within a few seconds, making it a great tool for auto shops as well as locksmiths. It also features an active test feature that can help find the problem quickly. There are a myriad of ways to reprogram your car. It is crucial to have the proper tools, and to know how they work. A mistake in programming could cause damage to the immobilizer on the vehicle and stop it from beginning. It is best to consult a professional before trying to reprogram a car key. Another option is to buy an entire kit that includes a key programmer, remote control keys, and transponder chips. This will ensure that you are equipped with everything you require to reprogram the car key. This method takes longer and requires expertise in soldering and electronic devices.