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How to Program a Car Key Modern cars have more than just a key that will start the engine. They also come with a remote control that can lock or open doors. Key fobs must be programmed correctly. It is possible to pre-program certain keys for cars by the owner, however it is advised to consult an expert. This will avoid any damage to the car's computer system and also ensure that the new key is working properly. How do you program a key Up until the turn of the 21st century, the majority of cars utilized basic key systems. Keys were made of metal and incorporated grooves to match the internal components of the ignition cylinder. However, as time progressed and technology advanced as it did, automobile manufacturers began blending physical and electronic protocols to stop theft. These key systems are called transponder keys or chip keys and are designed to make it difficult for thieves to open the vehicle. The key chips contain unique serial codes that transmits a message to the receiver inside your car. When the signal is received it is compared to the code that is stored in the car's computer. If the codes are compatible, then your car will start. If not, it won't start at all. This is one of the main reasons you should keep a spare key on your vehicle, particularly in the case of transponder-based systems. You'll need special equipment to learn to program keys. You'll also need a blank key for your particular model and make. They can be bought at a dealership or by a locksmith however, you must be sure they're the right ones. If you use a key that is for another model, it won't work. To start the process, you need to insert the new key into the ignition and switch it to the “on” position. You'll need to keep the key in this position for approximately 10 minutes and 30 seconds. Once the time is up you can take out the key and see whether the security indicator on your dashboard went out. If it did not you'll have to repeat the procedure for the third time. Keep in mind that this method can only work on GM vehicles but it's not foolproof. If you're looking for a reliable and secure solution go to an auto locksmith or dealer to have your car programmed using an embedded chip. These professionals have the tools and equipment required to connect to the onboard diagnostic port on your vehicle and make the switch. Keyless Entry Systems Keyless entry systems permit access to property without the requirement of an actual credential. Security is provided by sensors that are combined with an onboard computing device. This lets you control the system and monitor its activity from any place on your property, and it does away with the requirement for locks or keys. The system can also detect and deactivate lost or stolen cards. More Support allow remote management and configuration, and are cloud-based. Most modern cars come equipped with an entry system that is keyless. This system works by emitting radio signals that are received by the keyfob. The signals are compared to the code stored in the computer of the car, and if all is well the car will be able to unlock. If the signals don't match then the car won't start. There are a variety of steps you can follow to program your new key fob, if it isn't already programmed. You'll first need to make sure that all doors except the driver's door are locked. You'll also require the original key fob along with any additional keys you'd like to program. You can also try your local auto parts store because they might have the appropriate programming tool for your vehicle. If none of these options work, you will have to consult your owner's manual or an expert locksmith. Once you have the right tool, you can follow the manufacturer's instructions to begin changing the program of your key fob. The process is usually fast and easy. You may be instructed to insert the new key in the ignition when all doors are shut and then press the button on the keyfob after a specific time. The car could then respond by turning off the door locks or emitting a sound to signal that the key has been successfully programmed. Many locksmiths are equipped with special tools that permit them to bypass the built-in EEPROM security of the key fob of your car or remote. This is a risky technique and can cause corruption of the data stored in the car's computer. This should be left to a professional, who can lower the chance of data corruption and make sure that your keys are properly programmed. Transponder Keys Transponder keys are also known as chip key. They have embedded microchips inside the head of the keys. The antenna ring transmits electromagnetic energy to the transponder when the key is put into the ignition lock barrel. The chip absorbs this energy and then sends a radio frequency signal that includes an identification code. This code is in line with the unique digital serial numbers that are stored in the computer of the car. This prevents any attempts by anyone else to start the car as only the correct keys will be able. This technology is thought to be more secure than the traditional car key, as it makes it more difficult for a criminal to “hot wire” the vehicle and start it. But it's not foolproof, and thieves have discovered ways to evade and defeat the system – so that even cars with transponder keys aren't safe from theft. You may be able program a transponder key on your own with an appropriate key programmer for your car. The key programmer comes with a guide that will guide you step-by-step through the process. Once you have the key and a key programmer, follow the instructions carefully and make sure the security light on your dashboard is ON prior to turning the engine ON. If you're uncomfortable using a key programmer or if your vehicle comes with more advanced features, such as remote head keys or smart keys, you may turn to a professional locksmith assistance. They'll have the right tools and equipment to cut the blank key, remove your old one from your computer in the car and then program the new one so that it will work correctly. This will save your time and money, and will keep your car's security system working as it should. Plus, it's a lot safer than trying to do it yourself! Using the wrong key programmers or following unofficial instructions could cause a problem with the information stored in your car's system, resulting in the new key not working. Remotes It is possible to change the programming of your car keys if they aren't working. This is an easy procedure for most modern cars that utilize key fobs. However, certain models are more complex and need to be programmed with the help of an instrument that is available from the auto locksmith or dealer. Fortunately, many modern car manufacturers have made their key systems more secure in order to reduce vehicle thefts. The key system was designed to avoid hot-wiring (the practice of using a key from another vehicle to start the engine) and other similar methods. To ensure that this method works, you will require at minimum two key fobs working for your vehicle. It's important to have at minimum two spare keys in your possession. The keys have electronic chips in them that communicate with the car's receiver via radio signals. The computer in the car then compares the key's code to the one stored in its database. If the codes match the car will begin. If the codes don't match, the car will not start or will remain dead. Fortunately, the majority of electronic keys can be replaced and programmed by a professional auto dealer or a locksmith using the appropriate equipment. The procedure should be fairly simple if you can find a low-cost key programmer on the internet or in an auto parts store. You'll have to follow a particular set of steps that include inserting the key into the ignition and turning it on, without activating the engine, and then turning off the key. You'll need to repeat this process a certain number of times within a certain time period to allow your vehicle to enter programming mode. The door locks will turn on and off or chime. Certain modern vehicles can only be programmed with the help of a tool connected to the onboard diagnostics port, or an EEPROM programming process. Most of these tools are very expensive and therefore are not accessible to the majority of car owners. Most car experts recommend consulting with an experienced auto dealer or locksmith to program your keys.