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Reprogramming Car Keys Transponder keys are thought to be more secure for cars and are more difficult to copy by thieves. However, a key may need to be reprogrammed when it becomes damaged or lost. You can change the programming of your key fobs at home, but you should be aware of the proper procedure. To get the best results, you'll need the following items: Keys The majority of modern vehicles require a transponder key in order to operate. This provides security and anti-theft protection. These keys must be programmed to your specific car and its systems by a certified dealer or locksmith. They are costly to replace if they are lost, so it is recommended to keep spare keys in the car. You can locate key fobs to replace them in online stores, as well as many brick and mortar auto shops. How can you ensure that the one you bought is genuine? Are you able to tell whether it has been programmed for a different vehicle or if it is able to be reprogrammed to fit your vehicle? If you are planning to program an entirely new key first, you need to ensure that your car is operating. Insert the key you'd like to reprogramme into the ignition, but don't turn it. You only have just a few seconds before the car's system resets commands and leaves programming mode. It is important that you move quickly and do not 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 back to the “off” position. You should hear a chime signalling that the procedure was successful. The door locks will be able to cycle. Certain cars with more modern technology have rolling key technology, which prevents thieves from using a stolen car's key to start it. The feature is still vulnerable to a technique known as replay attack. It allows thieves to record and later reproduce the signal from the key fob of the vehicle to open the car. To prevent this, manufacturers have added an additional security feature known as the CAN bus protocol to stop attacks on hacking. Certain manufacturers have a unique encryption on their keys, which cannot be decoded by an ordinary program. These types of cars require programming by a professional, and you should only attempt this procedure with someone who has experience with electronics. Refer to the manual for your car or visit the website of the manufacturer to find out how to program it. The steps to follow will differ according to the type of vehicle. Transponder chips Car keys that feature transponder chips require a special reconfiguration to work. Any hardware store can make you a new car key however the real challenge lies in making it work with your car. A key that has been reprogrammed will need to match the exact identification number of your vehicle otherwise it won't even start the engine. Transponder chips are a standard feature of modern cars and are designed to prevent car theft. The chip is a tiny microcircuit that emits a radio frequency signal when the ignition key is put in. The car is able to detect the signal and begins the engine only if it matches the original 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. The key and the chip are linked by an electronic circuit board that contains an induction coil. When the key is inserted into the ignition, it creates a magnetic field around the transponder. This produces a signal which is taken up by the coil, which then transmits it to key's identification number. The key's identification code is sent back to the car and the engine will start when the identification number is in line with. There are several methods to program a key transponder, but all require a special tool. You can buy these tools online or from most locksmiths in the automotive industry. They are not cheap, but they're essential for programming the chip to your vehicle. You can also use an reprogrammable key that was previously programmed for a different vehicle. In this case, make sure the key has not been damaged or that the transponder is not altered in any way. You can read the chip with a scanner, or a computer that has an USB connector. The process of reprogramming a transponder key is quite easy, but it will require specialized software and a scan tool. If you're a beginner, it's best to seek out the help of an auto locksmith. You should also avoid buying second-hand keys, since they're probably already programmed and won't be compatible with your car. EZ Installer For a long time, car owners who needed to replace their key fob had no other option than to go to a dealer to have their key electronically connected to the vehicle. This is because, in order to make modern keys function, they need to be “paired”. This required expensive and complex equipment that was available only to dealers. The EZ Installer from Car Keys Express solves this issue for locksmiths and retailers by simplifying the process of connecting modern keys to vehicles. The EZ Installer, a basic “plug-and-play” OBD device, pairs new keys with vehicles without the use of complicated equipment or tokens for programming. It works by connecting directly to the vehicle's standard OBD port, and then using an app on mobile devices to provide easy-to-follow instructions. The EZ Installer is compatible with all modern vehicles that include proximity keys or push-button start. To see if it will 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 compatible vehicle, a full refund is provided. Unlike traditional programming equipment, which can cost key professionals hundreds of thousands of dollars in “token” fees per key, the EZ Installer Pro does not charge these fees. It is available for as long as a key professional or retailer needs. 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 renowned warranty that covers both hardware and software for the remainder 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 vehicles. These tools communicate with a vehicle's immobilizer to create new keys and remotely controlled. They can also be used to duplicate existing keys and create duplicate keys. These tools are a useful tool for anyone who owns an automobile. Autel Maxisys MS906BT is one of the most well-known tools to program keys for cars. This vehicle diagnostic scanner has advanced features that are OE-grade and is compatible with most of the major brands. It also comes with an option for key programming and is able to backup the most recent important data. It can also reset the immobilizer or clear immobilizer fault code. The OTOFIX Im1 is an important tool for reprogramming car keys. This auto-diagnostic scanner has advanced functions that are OE-level and can read passwords from the majority of major brands. It also allows online calibration, customization, and reading of EEPROM. It also comes with the ability to bypass the BMW or Mercedes PIN code. It also has the ability to read EEPROMs, car MCUs and CAN-EEPROMs for most major models. The XToolUSA Bidirectional Scanner is another popular choice for reprogramming vehicles. This scanner can read codes and key information 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 allows you to find the problem quickly. There are a myriad of ways to reprogram a car, it is crucial to select the appropriate tools and to know how to make use of them. Incorrect programming could cause damage to the car's immobilizer system and prevent it from starting. Before attempting to reprogram your car's key, it is recommended to consult with a professional. You can also purchase a kit which includes a key programmer, remote control key and transponder chip. This will help ensure that you have everything you need to reprogram your car key. However, this process will take longer and requires some understanding of electronics and soldering.