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Reprogramming Car Keys Transponder keys are believed to be more secure for cars and are more difficult to copy by thieves. A key may have to be reprogrammed in the case of damage or lost. You can reprogram your key fobs at home, but you must be aware of the proper procedure. You should have these items to achieve the most effective results: Keys Most modern cars require a transponder key in order to operate. This is a security feature and anti-theft protection. The keys are programmed by a locksmith or authorized dealer to work with your car's systems and specific model. It is expensive to replace them if they become lost, so it's better to keep extras on hand. You can find replacement key fobs in online stores as well as many brick and mortar auto shops. How do you ensure that the new one you have bought is genuine? Are you able to tell whether the unit is programmed to work with another vehicle, or if it can be programmed differently? If you're looking to program a new key the first step is to make sure that your car is operating. Insert the key you want to reprogramme into the ignition, but don't turn it. You have just a few minutes before the system will reset all commands and leaves the programming mode. This is why it is essential to be quick and not pause between steps. To prevent this from happening, shut off the engine. Change the key from “on” to “off” to test the system. You should hear a chime signalling that the procedure was successful. The door locks will cycle. Some newer cars use a rolling key system, which prevents thieves from using a stolen vehicle's key to open it. This feature is still susceptible to a technique dubbed replay attack. It allows thieves to record and reproduce the signal from the key fob of the vehicle to unlock the car. To prevent this, manufacturers added security features known as the CAN bus protocols to ward off hacking. Some manufacturers also use special encryption on their key fobs which are not decoded by an easy program. You should only attempt this method if your previous experiences are with electronic devices. Consult your car's manual or go to the manufacturer's website for information on how to program it. The steps will vary depending on the type of vehicle. Transponder chips Car keys that feature transponder chips need special reprogramming to work. Any hardware store can offer you an entirely new car key, but the real challenge lies in integrating it with your car. The key must be programmed to match the exact identification code on your vehicle, or else it will not start. Transponder chips are a standard feature in modern cars and are designed to guard against car theft. The chip is a tiny microcircuit which transmits a radio-frequency signal when the ignition key is inserted. reprogram key fob is able to detect the signal, and starts the engine only if it matches the original one that was programmed in the vehicle. The car is also programmed so that it will shut down when it detects an incorrect frequency. This makes it more difficult for thieves who are not experienced to wire a vehicle and start it. A circuit board equipped with an induction coil that connects the key to the chip. When the key is inserted into the ignition, it creates an electric field around the transponder. This generates a signal that is received by the coil before being sent to the key's identification. The ID number of the key is then sent back to the vehicle, and if it matches, the engine will begin to run. There are a few different ways to program a transponder keys, however, all require an instrument that is specifically designed for the purpose. These tools can be purchased through the internet or from many automotive locksmiths. They are not cheap, but they're crucial for programming the chip in your car. You may also use a unreprogrammable key that was programmed for an alternative vehicle. In this scenario, make sure the key isn't damaged or the transponder is not altered in any way. You can read the chip by using a scanner or a computer equipped with an USB connector. Reprogramming an transponder is a simple process, but requires special software. It also requires the use of a scanner. It is recommended to contact an auto locksmith for help if you're a novice. You should also avoid buying second-hand keys as they're likely to be programmed and won't work with your car. EZ Installer For a long time, owners of cars who needed to replace their key fob had no other choice than to visit an auto dealer to get their key connected to the vehicle. This is because, in order for modern keys to function they must be “paired”. This required expensive and complicated equipment that was only available to dealers. The EZ Installer from Car Keys Express solves this issue for retailers and locksmiths 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 of the vehicle, and runs an app that can be downloaded on mobile devices to provide easy to follow instructions. The EZ Installer works with most modern vehicles, including those that have proximity keys or push-button start. Visit the compatibility guide on Tom's site to see if your vehicle is compatible. If the device is unable to program the remote or key purchased from Tom's into a vehicle compatible then a full refund is provided. Contrary to conventional programming equipment which costs key retailers and professionals many thousands of dollars in “token” fees per key, the EZ Installer Pro does not charge these fees. It can be used for as long as a key professional or retailer wants. The EZ Installer also eliminates the need for costly monthly service contracts and updates, so it can save retailers money while still providing the same quality service as OEM equipment. It also comes with a renowned warranty that covers hardware and software for the duration of your life. Tools Car key programming tools are used by auto technicians, locksmiths and even owners of vehicles to program new keys for their vehicles. These tools connect to a vehicle's immobilizer to create new keys and control them remotely. They can also be used to copy existing keys and create duplicates. These tools are a valuable tool for those who own a car. Autel Maxisys MS906BT is among the most sought-after tools for programming car keys. This vehicle diagnostic scanner offers advanced OE-level features and is compatible with all of the major brands. It features an essential programming feature that allows you to backup current key data. It is also capable of resetting the immobilizer as well as clearing immobilizer fault codes. The OTOFIX Im1 is an important tool to reprogramme car keys. This auto-diagnostic scanner has advanced OE-level functions and can read passwords from all major brands. It is also able to perform online calibration and customization as well as reading of EEPROM. It also comes with the ability to bypass the PIN code for BMW and Mercedes. It also has the ability to read EEPROM, car MCU and CAN EEPROMs for the majority of major models. The XToolUSA Bidirectional Scanner is another option for reprogramming cars. This scanner can read codes and key information from most vehicles in a few seconds, making it a great tool for auto shops and locksmiths. It also comes with a live test function that allows you to determine the cause quickly and effectively. There are a variety of ways to reprogram your car, it is important to choose the right tools and to know how to use them. Uncorrect programming can damage the vehicle's immobilizer and stop it from starting. Before you attempt to program your car key, it is best to consult a professional. Another option is to purchase an entire kit that includes the key programmer, a remote control key, and transponder chips. This will ensure that you have everything you need to reprogram your car key. This method takes longer and requires expertise in soldering and electronics.