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Reprogramming Car Keys Transponder keys for car keys are believed to make vehicles more secure and harder for thieves to duplicate. However, keys may require reprogramming if it becomes damaged or lost. You can reprogram your key fobs at home, however you need to be aware of the proper procedure. For the best results you must have the following items: Keys Most modern vehicles require a transponder fob or transponder keys to work, which provides security and anti-theft protection. The keys have to be programmed to the specific vehicle and its features by a certified locksmith or dealer. It is expensive to replace them if they are lost, so it's best to keep extras on hand. You can also find replacement keys fobs in various online stores and in many brick-and-mortar auto shops. How can you ensure that the key you purchased is genuine? Do you know whether the unit has been programmed to work with a different vehicle, or if it can be programmed again? If you are planning to program an entirely new key the first step is to ensure that your car is operating. Insert automotive key programming want to reprogramme into the ignition, but don't turn it. There are just a few minutes before the system will reset all commands and then exits the programming mode. For this reason, it is essential to be quick and not be able to wait between steps. To avoid this happening, turn off the engine. Switch the key from “on” to “off” to test the system. There should be a chime indicating that the process was successful. The door locks will go through a cycle. Some newer vehicles use rolling keys to stop thieves from using stolen keys to open the car. This feature is still vulnerable to a technique known as a replay attack. It allows thieves to record and then reproduce the signal received from the vehicle key fob to unlock the car. To counter this, manufacturers have introduced an additional security feature known as the CAN bus protocol to thwart attacks on hacking. Certain manufacturers employ a specific encryption on their keys that cannot be decoded by an ordinary program. These types of vehicles require programming by a professional. Therefore, you should only attempt this process if you have experience working with electronic devices. It is recommended to read your car's owner manual or search for the manufacturer on the internet, since these steps vary by vehicle type. Transponder chips Transponder chip car keys require a special reprogramming to function. While any hardware store can cut a new key for you, the real issue is how to integrate it with your specific car. A key that has been reprogrammed will need to be matched with the exact identification number of your car or else it won't be able to start the engine. Transponder chips, used to protect cars from theft are a standard feature of modern cars. The chip is a tiny microcircuit that transmits a radio-frequency signal when the ignition key is placed. The car can detect the signal and starts the engine only if the signal is in line with the one programmed into the vehicle. The car will also shut down if a frequency is not valid. This makes it much harder for thieves who are not experienced to connect a vehicle with hot wires and then start it. The chip and the key are connected via a circuit board that includes an induction coil. When the key is placed in the ignition it creates a magnetic field created around the transponder. This creates a signal that gets taken up by the coil, which then transmits it to key's identification number. The key's identification code is returned to the car and the engine is started when the identification number matches. There are a few different methods to program a transponder keys, but they all involve using an instrument that is specifically designed for the purpose. You can purchase these tools on the internet or at many locksmiths for cars. These tools are not cheap but are essential for programming your car's chip. You could also use a reprogrammable transponder key that has been previously programmed for another vehicle. In this scenario, ensure that the key hasn't been damaged or the transponder isn't altered in any way. To check this, you can use a scanner or a computer with an USB port to identify the chip and establish its identity. Reprogramming an transponder's key is easy, but it will require special software and a scanning tool. It is best to consult an auto locksmith for assistance in case you're not an expert. It is also recommended to avoid purchasing secondhand keys, as they're likely to be programmed and won't be compatible with your car. EZ Installer Until recently those who wanted to replace their keys were required to visit an authorized dealer to get it electronically linked to the vehicle. This is because modern keys have to be “paired” to the vehicle of the owner in order to function and 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 simplifying the process of pairing modern keys with vehicles. The Easy Installer, a straightforward “plug-and-play” OBD device, pairs new keys with vehicles without the need for complicated equipment or tokens to facilitate programming. It connects directly to the vehicle's standard OBD port and using an app for mobile devices to provide easy-to-follow instructions. The EZ Installer works with all newer vehicles, including those with proximity keys or push button start. To see if it will be compatible with your specific vehicle, check the compatibility guidelines on Tom's site. A full-money-back guarantee is provided in the event that the device cannot successfully program a remote or key purchased from Tom's for a vehicle that is compatible. Unlike traditional programming equipment that costs retailers and key professionals thousands of dollars through typical per-key “token” fees, the EZ Installer Pro doesn't charge these fees at all, so it can be used as long as a retailer or key professional wishes it to be. The EZ Installer also eliminates the need for costly monthly service agreements and updates, which means it can save retailers money while still offering customers the same high-quality service as OEM equipment. It also offers a top warranty that covers hardware and software for the remainder of your life. Tools Car key programming tools can be used by locksmiths, auto technicians and owners of vehicles to program new keys for their vehicles. These tools connect to a vehicle's immobilizer in order to program new keys and control them remotely. They can also be used to clone existing keys and create duplicates. These tools are a useful tool for those who own a car. One of the most well-known car key programming tools is the Autel Maxisys MS906BT. The scanner for diagnostics of vehicles is compatible with all major brands and comes with advanced OE features. It comes with an important programming feature that can backup current key data. It can also reset the immobilizer, or clear the fault code. The OTOFIX IM1 is another important tool for reprogramming keys for cars. This auto diagnostic scanner is able to read passwords for all major brands, and it comes with advanced features comparable to OE. It is also able to perform online calibration as well as customization and reading EEPROM. The program also has an option to bypass a BMW or Mercedes PIN code. It is also able to read EEPROM, car MCU and CAN EEPROMs for all major models. The bidirectional scanner XToolUSA is another popular choice to reprogramme vehicles. This tool can read key information and codes from most vehicles in a few seconds which makes it a perfect tool for auto shops as well as locksmiths. It also has an active test function that allows you to find the issue quickly and efficiently. While there are many different ways to reprogram a car it is important to choose the right tools and to know how to use them. Incorrect programming may cause damage to the immobilizer of the vehicle and prevent it from beginning. Before attempting to reprogram your car's key, it's best to consult with an expert. You can also purchase a kit which includes keys, a key programmer, remote control key, and transponder chip. This will ensure that you are supplied with everything you need to reprogram your car's key. However, this method will take longer and requires some understanding of electronic circuits and soldering.