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Using a Key Programmer Modern key fobs go beyond just keys. They communicate with a vehicle to start it and open the rear hatch, and so on. To accomplish this, they have to be programmed together. All automobile dealerships, auto makers and auto locksmiths can provide key programming. However, you can do it yourself if you have the right equipment. What is a key programmer? A key programmer is used to reprogram the transponder on a key or fob for a car truck or other vehicle. This process is required when a new fob or key must be programmed. G28 's also common in the event that an existing fob or key has been lost or stolen. The device basically reprograms the digital signature of the chip inside the key to match that of the vehicle, and allows it to begin. Some vehicles come with electronic immobilizer systems that prevent theft by preventing the engine from starting without the correct key or fob. The system checks to determine if the key or fob is digitally signed. If it doesn't then the system will shut down. This kind of system is very effective in reducing car theft and was made mandatory for many models of car by the manufacturer. These systems can be controlled by a device that is placed in the vehicle's engine or instrument panel, or ignition lock. In some instances these systems require specific keys that have been designed by experts to function with the anti-theft system. This is usually performed by a dealership or locksmith using a computer. It is possible to reprogram certain keys and fobs yourself but it isn't recommended until you are an experienced technician for automotive. This is because a wrongly programed key could cause the vehicle to fail to run, not start, or even be completely destroyed. Most auto manufacturers have a very specific procedure for programming these kinds of keys. It is recommended that if you plan to offer key programming as part of your service offering, you obtain an LSID. This credential gives you access to the database of immobilizer and key codes, as well as information about the product. This access permits you to create and test new keys for customers quickly and easily. It also provides crucial documentation and support to help you with your everyday business operations. How do I program my key? Key programmer devices can be used to reprogram the keys of your car. It reads data from the microchip inside your key, and write new information onto the chip. This will allow you to use the key, and ensure that it works correctly. However the procedure of using a key programmer is a bit complicated and requires some technical expertise to make use of. So, before you try to accomplish this by yourself you should first talk to an expert or locksmith for directions. You can also purchase an online key programmer and get it professionally programmed for an affordable cost than the cost to have a dealership complete the job for you. Be aware that not all key programming products will work with your specific vehicle. Before you purchase it is important to determine if the item is compatible with your vehicle. The majority of the time you'll need to have your key fob reprogrammed by a dealer. The key fob needs to be reprogrammed to include the information specific to your car's anti theft system. Dealers typically require the VIN number of the car to do this, and they will charge fees. You can save money by giving your dealer a copy which you will be able to obtain from the DMV of most states. For some cars you can also try to program your own key if you have another working key that works on your car. This is called master key method and it can be used to program a different key on some vehicles. If you own an GM car, for example, insert your key into the ignition until the security light turns off. When the security light goes out, you can remove the working key and then insert the new one. You can also purchase a specially designed EEPROM key programmer, which is a costlier but more effective method to program a car key. This is an advanced technology which requires that you remove the car from its frame and read the data from the chip in the key. This kind of programming is best suited to professionals in the field of automotive mechanics who have years of experience in electronic repair. What are the top choices for a key programmer? There are a myriad of options in the field of key programmers. Some key programmers are created for a single purpose, such as generating new keys. Others incorporate diagnostic and service features to make them a multi-purpose tool for the mechanic's shop. XTool is a manufacturer of key programming products that are well-received among customers is among these companies. Their products are affordable and are based on a customer-centric approach, making them simple to use. One of the most well-known models from their range is the XTOOL Inplus IP616, rated as one of the best in its class. It features an intuitive user interface and super clear instructions that guide users through the programming process. It offers two ways of doing this: via vehicle or via type. The first is easier and better suited to novices and home mechanics while the latter is more advanced and requires a little more knowledge. Another option to consider is the Autel MaxiIM IMM608 PRO Auto Key Programmer. This device is an upgrade of the previous model, bringing greater power and stability. It features an IMMO function that is powerful and full system diagnostics at OE-level that make it a great choice for automotive technicians who are professionals. This model also has the ability to bypass immobilizers on early Renault vehicles. It has a range of other useful functions, such as reading mechanical key codes and dealer tool security codes. Additionally, it is able to read CAN data from certain Peugeot and Citroen vehicles and also has an extremely long-lasting battery. Despite its impressive capabilities, the XTOOL Inplus IP616 is still reasonably affordable. It's available for less than $500, making it a great choice for any DIY or mechanic repairman. It comes with a rechargeable battery and a fast start-up time, and is compatible with both OBD and CAN protocols. If you're looking for an even more sophisticated solution, look into the Autel XP400 Pro Auto Key Programmer. This is a sophisticated IMMO device that has several features, including the capability to clone Freescale 9S12MCUs. It also supports a wider range of vehicle manufacturers than the previous model and has an enhanced CAN bus communication engine that can work with the latest ECUs. Which key programmer is the best for me? It all depends on what kind of work you do and what you require from your key programmer. If you're an auto locksmith, you may require a key programmer that covers the widest range of vehicles, such as the Smart Pro or Autel IM608 Pro. They're designed to perform everything from read/write on the key to ECU programming and some OE level programming. There are simpler options for mechanics who do not require the entire rig. One of them is the Xtool Pad3 tablet key programmer. It was designed to program keys, but it also comes with advanced features, including oil service light resets, battery resets EPB resets, and throttle body resets.