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Reprogramming Car Keys Transponder keys for car keys are believed to make vehicles safer and are more difficult for thieves to duplicate. A key may have to be reprogrammed in the event of damage or lost. You can change the key fobs you own but you must be aware of the correct process. For the best results you should have the following items: Keys Most modern cars require a transponder key in order to operate. This provides security and protection against theft. These keys are programmed by a locksmith or authorized dealer to function with your car's system and specific model. They are costly to replace in the event of loss and you should keep extras handy. You can also find replacement key fobs in various online stores and in a variety of brick-and-mortar automotive shops. How do you ensure that the new key fob you bought is genuine? Are you able to tell whether the unit is programmed to work with another vehicle or if yours can be reprogrammed? To program a new car key, you must first ensure that your vehicle is running. Insert the key you wish to program into the ignition without turning it. You have only a few seconds before the system resets all commands and exits the programming mode. This is why it is crucial to move quickly and not be able to wait between steps. To prevent this from happening, shut off the engine. Switch the key from “on” to “off” to test the system. The door locks should be able to cycle, and you'll hear a chime to indicate that the procedure was successful. Certain vehicles of recent years use rolling key technology to prevent thieves from using stolen keys to open the vehicle. This feature is still vulnerable to a technique dubbed a replay attack. It allows thieves to record and later reproduce the signal from the key fob of the vehicle to unlock the car. To prevent this, manufacturers have introduced an additional security feature known as the CAN bus protocol to prevent attacks on hacking. Some manufacturers use a special encryption on their keys that can't be decoded with an ordinary program. These types of vehicles will need to be programmed by a professional. Therefore, you should only attempt this process with someone who has experience with electronic devices. It is recommended to read the owner's manual of your vehicle or search for the manufacturer online, as the steps differ based on car model. Transponder chips Car keys with transponder chips need special reprogramming to work. Any hardware store can give you an entirely new car key, but the real challenge is in making it work with your vehicle. The key needs to be programmed to match the exact identification code on your car, otherwise it will not start. Transponder chips, which are used to prevent car theft, are a common feature of modern automobiles. The chip is a microcircuit which transmits a radio frequency signals when the key is placed into the ignition. The car can detect the signal and starts the engine only if the signal matches the original one that was programmed into the vehicle. The car is also programmed to stop when it detects an incompatible frequency. This makes it much more difficult for novice car thieves to wire a vehicle and start it. The key and the chip are linked by an electronic circuit board that contains an induction coil. When the key is put in the ignition it creates a magnetic field generated around the transponder. This creates a signal that is taken up by the coil, which sends it to the key's identification number. The ID number of the key is transmitted back to the vehicle and if it is in line with the engine will begin to run. There are a variety of ways to program a key transponder, but each requires the use of a specific tool. You can purchase these tools on the internet or at many locksmiths for cars. They're not cheap, but they're essential for programming the chip to your vehicle. You can also make use of a transponder key that can be reprogrammed that has been previously programmed for a different vehicle. In this scenario, you'll need to make sure that the key isn't damaged or the transponder has been altered in any way. To check this, you'll need scanners or computers equipped with an USB port to scan the chip and determine its identity. Reprogramming the transponder is a straightforward process, but requires specialized software. It also requires an scanner tool. If you're just beginning it is recommended to seek the assistance of an auto locksmith. Also, avoid buying second-hand keys as they're likely to be programmed and will not be compatible with your car. EZ Installer Prior to recently, car owners who wanted to replace their key fob were forced to visit a dealer to have it electronically linked to the vehicle. This is because modern keys need to be “paired” to a specific vehicle to function, which required the use of expensive and complicated equipment that only dealers could access. The EZ Installer by Car Keys Express simplifies the process of pairing up modern keys to vehicles for retailers and locksmiths. The Easy Installer, a straightforward “plug-and-play” OBD device, pairs new keys with vehicles without the use of complicated equipment or tokens for programming. It connects directly to the standard OBD port of the vehicle, and runs a mobile application 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. To see if it will work with a specific vehicle, look up the compatibility guidelines on Tom's site. If the device fails to program the remote or key purchased from Tom's into a vehicle compatible, a full refund is offered. In contrast to 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 fees. It is able to be used for as long as the key professional or retailer requires. The EZ Installer eliminates the need for expensive monthly service contracts and software updates. This allows retailers to save money while offering their customers the same high quality service as OEM equipment. It also comes with a renowned warranty that covers hardware and software for the rest of your life. You can also find out more about Locksmiths, auto mechanics and owners of vehicles can utilize car key programming tools to create new keys for cars. These tools can communicate with the immobilizer of the vehicle to program new keys and remote controls. These tools can be used to create duplicates and make keys cloned. These tools are a valuable tool for anyone who owns an automobile. One of the most admired tools for programming car key s is the Autel Maxisys MS906BT. This scanner for vehicle diagnostics is compatible with all major brands and offers advanced OE features. It has a key programming feature and can backup the current key information. It can also reset the immobilizer or erase the fault code. The OTOFIX Im1 is an important tool to reprogramme car keys. This auto diagnostic scanner comes with advanced functions that are OE-level and can read passwords from all major brands. It also performs online calibration and customization as well as reading of EEPROM. The tool is also equipped with a feature that allows it to bypass a PIN code for BMW and Mercedes. It can also read EEPROMs, car MCUs, and CAN-EEPROMs of all major models. The XToolUSA Bidirectional Scanner is another popular choice to reprogramme cars. This is a fantastic tool for auto repair shops as well as locksmiths because it can read codes and key data from all vehicles in just a few seconds. It also features an active test feature that helps identify the issue quickly. There are a myriad of ways to reprogram your car, it is crucial to select the appropriate tools and know how to make use of them. Uncorrect programming can cause damage to the immobilizer of the vehicle and prevent it from starting. It is best to seek advice from a professional prior to attempting to reprogram a car key. Another option is to purchase an entire kit that includes a key programmer, remote control keys, and transponder chips. This will ensure that you have everything you need to reprogramme your car key. However, this process will take more time and requires some understanding of electronic circuits and soldering.