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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. However, a key might need to be reprogrammed if it becomes damaged or lost. You can program key fobs yourself, but you must know the correct procedure. For the best results you should have the following items: Keys Nearly all modern vehicles require some kind of transponder key or fob to operate, providing security and anti-theft protection. These keys must be programmed to your specific car and its systems by an authorized locksmith or dealer. It's costly to replace them if they are lost, so it's better to keep extras on hand. You can locate key fobs to replace them in online stores and many brick-and mortar auto shops. How can you be sure that the key you purchased is authentic? Do you know whether the unit has been programmed to work with a different vehicle, or if it can be reprogrammed? If you're looking to program an entirely new key the first step is to make sure that your car is on and running. Insert the key you want to program into the ignition without turning it. You have just a few minutes before the system will reset all commands and then exits the programming mode. It is important that you move quickly and do not be patient between each step. Turn off the engine to stop this. You can check the car's system by turning the key to the “on” position and then back to the “off” position. The door locks should cycle, and you'll hear a sound that indicates that the procedure was successful. Certain newer vehicles utilize rolling keys to keep thieves from using stolen keys to open the vehicle. This technology is still vulnerable to a technique dubbed replay attack which allows thieves to record the signal of the key fob of the car and reproduce it later to open the car. To stop this, manufacturers have added an additional security feature known as the CAN bus protocol to thwart hacking attempts. Certain manufacturers also have special encryption on their key fobs, which cannot be decoded by an ordinary program. These types of vehicles require to be programmed by a professional, so you should only try this with someone who has experience with electronic devices. Refer to the manual for your car or visit the website of the manufacturer to learn how to program it. The steps will vary depending on the model of vehicle. Transponder chips Car keys that feature transponder chips need special programming to function. While any hardware store can cut a new key for you, the biggest challenge is making it function to work with the specific car you own. A reprogrammed key will need to be matched with the specific identification number of the vehicle otherwise it won't even start the engine. Transponder chips are a standard feature of modern cars and are designed to guard against car theft. The chip is a microcircuit that emits a radio frequency signal when the key is inserted into the ignition. The car then detects the signal and starts the engine in case it matches the original frequency that was programmed into the vehicle. The car is also programmed to shut down when it detects an incompatible frequency. This makes it much harder for thieves who are not experienced to wire a vehicle and then start it. A circuit board equipped with an induction coil that connects the key to the chip. When the key is put in the ignition, a magnetic field is created around the transponder. This generates a signal, which is received by the coil before being sent 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 start. There are many methods to program a transponder key, however, all require a special tool. These tools are available on the internet or at most auto locksmiths. These tools are not inexpensive, but they are vital for programming the chip in your car. You can also make use of a transponder key that can be reprogrammed that has been previously programmed for another vehicle. In this instance you'll need to make sure that the key is not damaged or the transponder been altered in any way. To check programming car key , you'll need a scanner or a computer with an USB port to scan the chip and determine its identity. Reprogramming a transponder key is quite simple, however it requires special software and a scanning tool. If you're new to the process it is recommended to seek the assistance of an auto locksmith. You should also avoid buying second-hand keys, since they are likely already 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 option than to go to a dealership to get their key linked to their vehicle. This is because in order to make modern keys function, they need to be “paired”. This required expensive and complex equipment that was only available to dealers. The EZ Installer from Car Keys Express solves this issue for locksmiths and retailers by making it easier for 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 to facilitate programming. It connects directly to the standard OBD port of the vehicle and utilizes an app that can be downloaded on mobile devices to provide simple to follow instructions. The EZ Installer is compatible with most newer models, including those with proximity keys or push button start. To determine if it'll be compatible with your specific vehicle, check the compatibility guide on Tom's website. A money-back guarantee of 100% is offered in the event that the device fails to successfully program a remote or key purchased from Tom's for a vehicle that is compatible. Contrary to conventional programming equipment which costs key retailers and professionals tens 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 also eliminates the requirement for expensive monthly service contracts and updates, meaning that it can save retailers money while providing the same quality service as OEM equipment. It also offers an industry-leading warranty that covers all hardware and software for the duration of its life. You can also learn more about Locksmiths, auto mechanics and vehicle owners can use car key programming tools to create new keys for cars. These tools communicate with the immobilizer of the vehicle to program new keys and remote controls. They can also be used to duplicate existing keys and create duplicate keys. These tools are an essential tool for anyone who owns a car. One of the most well-known tools for programming keys to cars is the Autel Maxisys MS906BT. The scanner for diagnostics of vehicles offers advanced OE-level features and is compatible with the majority of the major brands. It features a key programming feature that allows you to back up current key data. It can also reset the immobilizer, or clear the fault code. Another important tool to reprogramme car keys is the OTOFIX IM1. This auto-diagnostic scanner has advanced functions comparable to OE and can read passwords from the majority of major brands. It also performs online calibration as well as customization and reading of EEPROM. The tool is also equipped with a feature that allows it to bypass the PIN code for BMW and Mercedes. It also has the ability to read EEPROMs, car MCUs, and CAN-EEPROMs of all major models. The XToolUSA Bidirectional Scanner is another popular choice for reprogramming cars. This scanner can read codes and key information from most vehicles in just a few seconds, making it a great tool for auto shops and locksmiths. It also has an active test function that allows you to identify the problem quickly and efficiently. There are a myriad of ways to reprogram your car. It is important to have the right tools, and to know how they function. Incorrect programming could cause damage to the car's immobilizer system and prevent it from starting. It is best to consult a professional before trying to reprogram a car key. You can also purchase a kit which includes keys, a key programmer, remote control key, and transponder chip. This will ensure that you have everything you need to reprogramme your car key. This method, however, will take longer and requires some knowledge of electronic circuits and soldering.