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How to Program a Car Key Modern cars come with more than a key that will start the engine. They also have a remote control that allows you to lock or unlock doors. These key fobs have to be programmed in order to function. It is possible to pre-program certain keys for cars by the owner, however it is best to consult a professional. This will avoid any damage to the computer system of the car and will ensure that the key functions correctly. How to program a Key The majority of cars had basic key systems prior to the turn of 21st century. Keys were made of metal and had grooves to match the internal components of the ignition cylinder. However, as time progressed and technology advanced as it did, automobile manufacturers began to combine electronic and physical protocols to prevent theft. These key systems are called transponder keys or chip keys and they're designed to make it difficult for thieves to get into the vehicle. The key chips come with unique serial codes that sends a message to the receiver inside your car. The signal is compared with an identifier in the car's computer when it is received. If the codes are similar the car will begin to begin. If not, it won't start at all. This is one of the primary reasons you should keep a spare key in your vehicle, especially if you have transponder-based systems. If you want to learn how to program a key, you'll need certain equipment. You'll need a blank key that is compatible with the car's model and make. You can purchase these at an auto locksmith or a locksmith dealership, but it's important to get the right ones. If you attempt to use a key that is from another model, then it will not work. To start the process, you need to insert the new key into the ignition and turn it to the “on” position. You will need to leave the new key in this position for approximately 10 minutes and 30 second. After the time is up, you can remove your key and verify that the security indicator on your dashboard has gone off. If it didn't, you will need to repeat the process three times. Remember that this method will only work with GM vehicles but it's not 100% secure. If you're seeking a more secure and reliable method, you should seek out a professional locksmith or dealer to get your vehicle programmed with chip. These professionals have the necessary tools and equipment to connect to your car's onboard diagnostics port and make the change. Keyless Entry Systems Keyless entry systems permit access to property without the need for an actual credential. Security is provided by a combination between sensors and an onboard computing device. This allows you to control the system and monitor activities from anywhere on the property, and it does away with the need for keys or locks. The system is also able to detect lost or stolen cards and disable them. In addition, the latest models are cloud-based, allowing for remote management and configuration. Most modern cars are equipped with the keyless entry system. To enable this feature the car emits radio signals which are picked up by a special key fob. The signals are compared to the code that is stored in the computer of the car and if everything is well, the car will unlock. If the signals don't match then the car won't start. If your key fob is not already programmed, you can follow several steps to program it. First, you'll need to make sure that all doors excluding the driver's door are locked. Also, you'll need the original key fob, and any other accessories you want to program. You can also check your local auto parts store to see if they've got the right tool for your car. If none of these methods work, you will have to consult your owner's manual, or an expert locksmith. Once programming car key got the proper tool, follow the manufacturer's instructions to begin programming your key fob. The process is usually quick and easy. For instance, you could be instructed to insert your new key into the ignition with the doors shut, and then press a button on the key fob within a brief time. The car could respond by reversing the doors or emitting an audible chime as an indication that the key has been successfully programmed. A lot of locksmiths utilize special tools to get around the EEPROM security built into the remote of your car or key fob. This is a risky method and can corrupt the data stored in the car's computer. It is recommended to have an expert handle this, as they will be able to lower the chance of data corruption and also ensure that your keys are correctly programmed. Transponder Keys Transponder keys, also referred to as chip keys, are equipped with a microchip embedded in the head of the key. The antenna ring transmits electromagnetic energy to the transponder when the key is inserted into the ignition lock barrel. The chip absorbs this energy and then transmits a radiofrequency signal that includes an identification code. The code is matched to the unique digital serial numbers that are stored in the car's computers. This stops any attempts by anyone else to start the car as only the correct keys will be able. This technology is believed to be more secure than traditional car keys because it makes it more difficult for thieves to “hot wire” the vehicle and start it. It's not foolproof and thieves have found ways to evade detection and defeat the system. Therefore, even vehicles with a transponder key are not immune to theft. Depending on the brand and model of your vehicle You may be capable of programming a new transponder by yourself with a key programer that is compatible with your particular car. The key programmer will come with a step-by-step guide that will walk you through the process of programming your key. Once you have the key and key programmer, follow the steps carefully and ensure that the security light on your dashboard is on prior to turning your engine ON. You can ask a professional locksmith to help you if you are not confident with a key programmer or if you own a vehicle with more advanced features, such as remote head keys or intelligent keys. They will have the tools and equipment needed to cut an uncut key, erase the old key from the computer of the car, and then program the new key for it to function correctly. This will help you save money and time, and keep your car's safety system operating just as it should. Additionally, it's much safer than trying to do it yourself! Utilizing the wrong key programming software or following unofficial guidelines could alter the information stored in the car's system, resulting in the new key not functioning. Remotes If your car keys aren't working, you might need to reprogram them. This is an easy process for many modern cars that use key fobs. Some models are more complex and require a specific programming device, which is normally available from the dealer or through auto locksmiths. To prevent theft of vehicles, modern car manufacturers have improved the security of their key systems. The key system is designed in a way to avoid hot-wiring which is the act of using a key from a different vehicle to start the engine of your car. To be able to make this process work, you will require at least two key fobs working for your vehicle. This is just one of the reasons why it's a good idea to always have at least one spare key on hand. The keys have electronic chips in them which communicate with the car's receiver using radio signals. The computer in the car then compares the key's code with the one in its database. If the codes match the car will begin. If the codes don't match the car won't start or will remain dead. Luckily, most of these electronic keys can be replaced and programmed by an experienced auto dealer or a locksmith using the appropriate equipment. The process should be relatively simple if you are able to find a low-cost key programmer on the internet or at an auto parts store. You'll have to follow a particular sequence of steps that includes inserting the key into the ignition, turning it on, without running the engine, and then turning the key off. You'll have repeat the steps a specific number of times within a specified time frame to put your vehicle in programming mode. This will be evident by the door locks chiming or an audible chime. Some modern cars are only capable of being programmed using a tool that is connected to the onboard diagnostic port or EEPROM programming. The majority of these tools are costly and therefore unaffordable by the majority of car owners. Many experts in the field recommend consulting with a professional auto dealership or locksmiths to program your keys.