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Reprogramming Car Keys Transponder keys are believed to be more secure for cars and harder to copy by thieves. Keys may need to be reprogrammed in event of damage or lost. You can reprogram your key fobs at home, however you must know the right process. You should have these items to achieve the most effective results: Keys Modern cars require a transponder keys to operate. This provides security and anti-theft protection. These keys must be programmed to the specific vehicle and its systems by an authorized dealer or locksmith. They are expensive to replace if they are lost and you should keep extras handy. You will also find replacement key fobs in various online stores and in many brick-and mortar auto shops. How can you be sure that the one you purchased is authentic? Do you know whether it has been programmed for another car or if it could be reprogrammed for yours? If you are planning to program an entirely new key first, you need to make sure that your car is running. Insert the key you wish to reprogramme into the ignition, but don't turn it. You have just a few minutes before the system resets all commands and then exits the programming mode. For this reason, it is crucial to move quickly and not be able to wait between steps. To avoid this happening, shut off the engine. Change the key from “on” to “off” to test the system. You should hear a chime to indicate that the process was successful. The door locks will be able to cycle. Some newer cars use a rolling key system, which keeps thieves from using a stolen vehicle's key to start it. The technology is still susceptible to a method known as a replay attack, which allows thieves to record the signal of the vehicle's key fob and reproduce it later to unlock the car. To counter this, manufacturers have added a security feature called CAN bus protocol to stop hacking attempts. Some manufacturers use a special encryption on their keys that can't be decoded with a simple program. These kinds of cars require programming by a professional. Therefore, you should only attempt this process if you have experience working with electronic devices. Check the manual of your car or look up the manufacturer's website to find out how to program it. The steps are different depending on the type of vehicle. Transponder chips Car keys that feature transponder chips need special reconfiguration to work. While any hardware store can cut keys for you, the biggest issue is how to integrate it in conjunction with your particular car. A reprogrammed key will need to match the exact identification number of your vehicle otherwise it won't even start the engine. Transponder chips, used to prevent car theft are a standard feature of modern cars. The chip is a small microcircuit that emits a radio frequency signal when the ignition key is inserted. The car can detect the signal, and starts the engine only if the signal matches the one programmed into the vehicle. The car also shuts down if a frequency is not valid. This makes it harder for thieves who aren't experienced to hot-wire a vehicle and then turn it on. A circuit board that has an induction coil that connects the key to the chip. When the key is placed in the ignition it creates a magnetic field generated around the transponder. This generates a signal that is absorbed by the coil, which sends it to the key's identification number. 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 many ways to program a transponder keys, however, they all require an instrument that is specifically designed for the purpose. These tools are available online or from most automotive locksmiths. These tools are not inexpensive, but they are vital for programming your car's chip. mobile car key programming may also make use of a transponder key that can be reprogrammed that was previously programmed for another vehicle. In this scenario, ensure that the key hasn't been damaged or that the transponder isn't altered in any way. To do this, you'll need scanners or a computer equipped with an USB port to scan the chip and determine its identity. Reprogramming the transponder key is simple, however it requires an expertly designed software and scan tool. If you're just beginning you should seek the assistance of an auto locksmith. Don't buy used keys since they could already be programmed, and they won't be compatible with your vehicle. EZ Installer For a long time, car owners who required a replacement for their key fob had no other option than to go to an auto dealer to have their key electronically connected to the vehicle. This is because modern keys need to be “paired” to the vehicle of the owner in order to function in a way that required the use of expensive and complex equipment that only dealers had access to. The EZ Installer by Car Keys Express simplifies the process of pairing modern keys to vehicles for locksmiths and retailers. The EZ Installer, a basic “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 standard OBD port of the vehicle and utilizes a mobile application to provide easy to follow instructions. The EZ Installer is compatible with the majority of newer vehicles, including those with proximity keys or push button start. Check the compatibility guide at Tom's site to see if your vehicle is compatible. If the device fails to program the remote or key purchased from Tom's into a vehicle that is compatible then a full refund is provided. 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 can be used 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 will save retailers money while providing customers with the same high-quality service as OEM equipment. It also comes with an industry-leading warranty that covers all hardware and software for the life of the product. Tools Car key programming tools can be utilized by auto technicians, locksmiths and even owners of vehicles to program new keys for their automobiles. These tools connect to the vehicle's immobilizer system to create 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. Autel Maxisys MS906BT is one of the most popular tools for programming keys for cars. The scanner for diagnostics of vehicles is compatible with all major brands and offers advanced OE features. It also comes with an option for key programming and is able to backup current important information. It can also reset the immobilizer or erase the fault code. The OTOFIX IM1 is an important tool for reprogramming car keys. This auto diagnostic scanner comes with advanced functions comparable to OE and can read passwords from the majority of major brands. It also has the ability to perform online calibration, customization and EEPROM reading. The program also has a feature to bypass a BMW or Mercedes PIN code. It can also read EEPROM, car MCU, and CAN EEPROMs for the majority of major models. The XToolUSA Bidirectional Scanner is another top choice for reprogramming vehicles. This scanner can read key information and codes from most vehicles in just a few seconds, making it a great tool for auto shops and locksmiths. It also has an active test feature that can help identify the issue quickly. There are a variety of ways to reprogram your car. It is important to have the right tools, and to know how they work. Uncorrect programming can cause damage to the immobilizer on the vehicle and stop it from beginning. Before attempting to reprogram your car key, it's best to consult an expert. You can purchase a kit that includes the key programmer, a remote control key, and transponder chip. This will help ensure that you have everything you need to reprogramme your car key. This method is more time-consuming and requires expertise in soldering and electronics.