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How to Program a Car Key Modern cars come with more than just a key to start the engine, they also come with a remote that can lock and unlock doors. These key fobs have to be programmed in order to work. Some car keys can be preprogrammed by the owner himself, but it's best to consult with an expert. This will protect against any possible damage to the computer system and also ensure that the new key works correctly. How to program the key Prior to the beginning of the 21st century the majority of cars had basic key systems. Keys were made of metal and had grooves to correspond to the internal parts in the ignition cylinder. As car key programming passed and technology improved and improved, car manufacturers began blending electronic and physical protocols to protect against theft. Key systems like these are also referred to as transponder keys or chips keys, are designed to make it difficult for thieves to open the vehicle. The key chips in the keys have a unique serial number that sends a signal to the receiver inside of your car. The signal is compared to the computer of the car when it is received. If the codes match, then your car will begin to start. If the codes aren't compatible, your car will not even start. This is why it is important to keep an extra car key especially if your system is transponder-based. You'll require special equipment to learn to program keys. You'll need to buy an uncut key that matches the car's model and make. These can be purchased at a dealership or by locksmiths however, you must be sure they're the right ones. If you use a key that is for another model, it won't function. To start the process, you need to insert the new key into the ignition and switch 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 has passed, you can remove your key and see if the security indicator on your dashboard has gone off. If it didn't then you'll have repeat the process a third time. This method is only compatible with GM vehicles, and isn't 100% secure. If you're looking for a more secure and reliable option go to a locksmith or a dealer to get your car programmed with an embedded chip. These professionals have the tools and equipment required to connect to the diagnostics port in your vehicle and make the necessary changes. Keyless Entry Systems Keyless entry systems allow property access without requiring a physical credential. They use a combination of sensors and an onboard computer to offer security. It is possible to manage and monitor the system from any place within the property. Keys and locks are not required. The system is also able to detect stolen or lost cards and deactivate them. The newest models also allow remote management and configuration, and are cloud-based. Modern automobiles are equipped with keyless entry systems. car key programming by emitting radio signals that are picked up using the keyfob. The signals are then compared with the correct code in the car's computer, and when everything is in order the car will be able to unlock. If the signals do not match, the car will not start. If your key fob isn't already programmed, you can follow a series of steps to program it. First, you'll need make sure that all doors are locked, with the exception of the driver's side. You'll need to have the original key fob as well as any other devices you wish to program. You can also try the local auto parts store for the right tool to program your vehicle. If these steps do not work, you'll have to consult the owner's manual or a professional locksmith. Once you've got the proper tool, follow the instructions of the manufacturer to begin changing the program of your key fob. This process is usually quick and easy. You might be told to put the new key into the ignition when all doors are shut, and then press the button on the keyfob within the time frame. The car may then respond by adjusting the door locks or generating a chime to signal that the key has been successfully programmed. Many locksmiths have special tools that allow them to bypass the built-in EEPROM security of the car's key fob or remote. This is a risky technique and could cause data corruption on your car's computer. This should be left to a professional, who can reduce the risk of data corruption and make sure that your keys are programmed correctly. Transponder Keys Transponder keys are also known as chip keys. They have a microchip embedded in the head of keys. When the key is inserted into the barrel of the ignition lock, and then turned into the ON position the antenna ring transmits an electromagnetic energy blast through the transponder chip. The energy is absorbed by the chip, which then transmits the radio frequency signal, which includes an identification code that is matched up to the unique digital serial number in the car's computer system. This prevents unauthorised attempts to start the car since only proper keys will be able to do so. It is believed that this technology will be more secure than traditional car keys because it makes it much more difficult for thieves to “hot wire” a vehicle and start it. But it's not foolproof and thieves have found ways to evade and defy the system – which means that even cars equipped with transponder keys aren't immune from theft. Based on the make and model of your vehicle depending on the make and model of your car, you might be capable of programming a new transponder by yourself with a key programer that is compatible with your specific car. The key programmer should come with an instruction manual that will guide you through the process of programming your key. Follow the instructions and switch on the security lights on your dashboard before you start your engine. You can contact an expert locksmith to assist you if you are not confident using a key programmer or if you own a vehicle with more advanced features, like remote head keys or intelligent keys. They'll have the appropriate tools and equipment to cut your blank key, erase your previous one from the computer in your car, and then program the new key so that it will work properly. This will save you time and money and will keep your car's security system working just as it should. It is also safer than making it yourself. If you use a incorrect key programming software or follow unofficial guides or instructions, the information stored in your car's system could be corrupted, and the new key won't work. Remotes It is possible to change the programming of your car keys if they're not working. It's a simple procedure for most modern cars that have key fobs. However, some models are more complex and require programming with the aid of a special device that's usually available from the auto locksmith or dealer. Fortunately, the majority of modern automobile manufacturers have made their key systems more secure to reduce vehicle thefts. The key system is designed to stop hot-wiring (the practice of using the key of another vehicle to start the engine) and other similar methods. Therefore, you'll need to have at least two working key fobs for your vehicle to be able to use the system. It's essential to have at least two spare keys available. The key fobs have electronic chips which communicate with the car's radio via radio signals. The computer in the car then compares the key's code to the one in its database. If the codes match, the car will start. If not, the car will be dead or refuses to start. Fortunately, the majority of electronic keys can be replaced and programmed by an experienced locksmith or an auto dealer using the appropriate equipment. If you can locate an inexpensive car key programmer online or at an auto parts store, the process should be fairly straightforward. You will need to follow a set-up that includes inserting the ignition key and turning it on, without starting the vehicle, and then switching off the key. You'll have to repeat this a certain number of times within a certain time frame for your vehicle to enter programming mode. This will be indicated by the door locks turning or an audible chime. Some modern vehicles are capable of programming using a device connected to the onboard diagnostic port or EEPROM programming. Unfortunately, the majority of these tools are extremely expensive, making them unaffordable for most car owners. The majority of car experts recommend consulting with a reputable auto dealership or locksmiths to program your keys.