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How to Program a Car Key Modern cars come with more than just a single key to start the engine, they also have a remote that can lock and unlock doors. These key fobs need to be programmed to work properly. It is possible to program certain car keys by the owner, however it is recommended to speak with an expert. This will help avoid any damage to the computer system, and also ensure that the new key is working properly. How do you program a key? Most cars had basic key systems until the turn of 21st century. Keys themselves were metal and had grooves that corresponded to the internal components of the ignition cylinder. As time went on and technology improved as it did, automobile manufacturers began to combine electronic and physical protocols to prevent theft. These key systems also known as transponder keys or chips keys, are designed to make it harder for thieves to steal a vehicle. The key chips contain unique serial codes that transmits a message to the receiver in your car. The signal is compared with the computer of the car when it is received. If the codes match then your car will start. If not, it will not start at all. This is one of the main reasons to keep a spare key in your car, especially if you have transponder-based systems. If you're interested in learning how to program a key, you'll need some specific equipment. You'll also need to purchase a blank key for your particular model and make. They can be bought at an auto dealership or from locksmiths, but you must make sure they're the right ones. If you use a key that is for another model, it will not work. To begin the process, 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 about 10 minutes and 30 second. When the time has passed, you can remove the key and observe whether the security light on your dashboard went out. If it didn't go out you'll have to repeat the process three times. Keep in mind that this method can only work with GM vehicles, and it's still not 100% secure. If you're looking for a secure and reliable option go to a locksmith or dealer to get your vehicle programmed with an embedded chip. These professionals are equipped with the tools and equipment needed to access the onboard diagnostics port of your car and perform the change. Keyless Entry Systems Keyless entry systems allow property access without requiring a physical credential. They utilize a combination of sensors and an onboard computer to offer security. It is possible to control and monitor the system from any place within the property. Keys and locks are not required. The system is also able to detect and deactivate lost or stolen cards. In addition, the newest models are cloud-based and permit remote management and configuration. Most modern cars come equipped with the keyless entry system. The system works by emitting radio signals that are picked up using a special keyfob. These signals are then compared against the correct code in the car's computer and if everything is in order the car will be able to unlock. If the signals do not match, the car will not start. There are several ways to program your new key fob if it's not programmed yet. You'll first need to be sure that all doors excluding the driver's door are locked. You'll need the original key fob and any other devices you wish to program. You can also visit the local auto parts store to see if they have the appropriate tool for your car. If none of these options work, you will need to consult your owner's manual or a professional locksmith. Once you have the correct tool, follow the instructions of the manufacturer to begin reprogramming your key fob. This process is often relatively simple and quick. For instance, you could be directed to insert your new key into the ignition while keeping all doors closed and then press a button on the key fob within a very short time period. The car may then respond by turning off the door locks or emitting a chime to indicate that the key was successfully programmed. Many locksmiths use special tools to bypass the EEPROM security that is built into your car's remote or key fob. This is a risky technique and can cause corruption of the data in your car's computer. It is best to let a professional handle this because they will be able to reduce the risk of data corruption and ensure that your keys are programmed correctly. Transponder Keys Transponder keys, also known as chip keys, have a microchip built into the head of the key. When the key is placed in the ignition lock barrel and turned into the ON position the antenna ring emits a burst of electromagnetic energy through the transponder chip. The chip absorbs the energy and then transmits a radio frequency signal which contains an identification number. The code is matched to the unique digital serial numbers of the computer system of the car. This will prevent any unauthorised attempts to start the car because only a valid key will be able to perform the task. The technology is believed to be more secure than the traditional car key, as it makes it more difficult for a criminal to “hot wire” the vehicle and then start it. However, it's not foolproof and thieves have discovered ways to deceive and defeat the system – so that even cars with transponder keys aren't safe from theft. Depending on the brand and model of your car You may be able to program a new transponder key by yourself using a key programmer that's compatible with your specific car. The key programmer will come with a step-by-step guide that will walk you through the process of programming your key. Follow the directions and switch on the security light on your dashboard prior to beginning your engine. reprogram key fob can seek out an expert locksmith to assist you if you are not confident with the key programmer or you own a car that has more advanced features, like remote head keys or intelligent keys. They'll have the tools and equipment required to cut an uncut key, erase the old one from the computer in the car, and program the new key for it to function properly. This will save you time and money and ensure that your car's safety system working just as it should. Additionally, it's much safer than making it yourself. Utilizing the wrong key programming software or following unofficial instructions could corrupt the information in the car's system, resulting in the new key not functioning. Remotes If your car keys aren't working, you might need to change the programming. This is a straightforward process for many modern cars that use key fobs. However, some models are more complicated and need to be programmed with the help of an additional device that's typically available from the auto locksmith or dealer. Fortunately, most modern car manufacturers have improved their key systems to be more secure to prevent theft of vehicles. The key system is designed to stop hot-wiring, which is using a key from another vehicle to start the engine of your vehicle. To be able to make this process work, you will need at least two key fobs working for your vehicle. It's important to have at minimum two spare keys available. The key fobs have electronic chips that communicate using radio signals to the car's receiver. The computer examines the code of the key with the database. If the codes match the car starts. If the codes do not match then the car will not start or will remain dead. Luckily, most of these electronic keys can be replaced and programmed by a professional auto dealer or a locksmith equipped with the proper 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 need to follow a set-up which include inserting the ignition keys, turning it on, without starting the vehicle, then turning off the key. You'll need to repeat this procedure a specific number of times within a specific time frame for your vehicle to enter programming mode. The door locks will turn on and off or chime. Some modern cars can only be programmed by means of a tool that's connected to the onboard diagnostics port or an EEPROM programing procedure. The majority of these tools are expensive and therefore are not accessible to the majority of car owners. So, many car experts recommend that you speak with a professional locksmith or auto dealer to program your keys.