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How to Program a Car Key Modern cars have more than a key that can start the engine. They also come with a remote which can be used to lock or open 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 advised to consult a professional. This will ensure that there is no damage to the computer system of the car and ensure that the key works correctly. How to Program a Key Up until the turn of the 21st century, the majority of cars utilized basic key systems. Keys were made from metal and incorporated grooves to match the internal components in the ignition cylinder. However, as time progressed and technology improved 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 get into the vehicle. The key chips have unique serial codes which transmits a signal to the receiver in your car. The signal is then compared to an identifier in the car's computer when it is received. If the codes are compatible, then your car will begin to start. If the codes don't match, your car will not even start. This is one of the primary reasons why you should always keep a spare key for your vehicle, especially in the case of an electronic transponder. If you're interested in learning how to program keys, you'll need certain equipment. You'll need a blank key that matches the model and make of your car. You can buy them at the locksmith shop or at a car dealership, but it's crucial to purchase the correct keys. If you use a key that is for another model, it won't function. Start by inserting the new key in the ignition and turning it “on”. You will need to leave the new key in this position for about 10 minutes and 30 seconds. After the time is up you can take off your key and check if the security indicator on your dashboard has gone off. If it did not then you'll need to repeat the procedure a third time. Be aware that this method will only work with GM vehicles however it isn't foolproof. If you're looking for a safer and reliable option, you should visit a professional locksmith or the dealer to have your car programmed with a chip. They will have the tools and equipment to connect to your car's onboard diagnostics port and make the change. Keyless Entry Systems Keyless entry systems provide property access without requiring the use of a physical ID. They make use of a combination of sensors and an onboard computer to provide security. It is possible to manage and monitor the system from anywhere within the property. Keys and locks are not required. The system can also identify stolen or lost cards and then deactivate them. The latest models also support remote management and configuration, and are cloud-based. Modern cars are equipped with keyless entry systems. To make this work, the vehicle emits radio signals which are picked up by a special key fob. These signals are then compared to the correct code stored in the car's computer, and if everything is in order the car will start to unlock. The car will not start if the signals are not the same. There are several steps you can follow to program your new key fob if it's not already programmed. First, you'll need to make sure that all doors excluding the driver's door are locked. You'll also need the original key fob as well as any extras you want to program. You can also visit your local auto parts store to see if they have the right tool for your car. If none of these methods work, you'll need to check the owner's manual, or a professional locksmith. Once you have the right tool, you can begin the changing the programming of your key fob following the instructions of the manufacturer. The process is usually simple and quick. For example, you might be asked to insert your new key into the ignition while keeping all doors closed and then press an appropriate button on the fob within a brief time frame. The car could respond by cycling doors or emitting an audible sound as a sign that the key was successfully programmed. Many locksmiths employ special tools to bypass the EEPROM security features that are built into your car's remote or key fob. However it's a risky method and comes with the possibility of destroying the data stored on your car's computer. This is best left to a professional who can reduce the risk of data corruption and ensure that your keys are correctly programmed. Transponder Keys Transponder keys, also known as chip keys, come with a microchip embedded in the head of the key. The antenna ring transmits electromagnetic energy to the transponder whenever the key is placed into the barrel of the ignition lock. The chip absorbs the energy and then transmits a radio frequency signal which contains an identification number. The code is matched to the unique serial numbers that are stored in the car's computers. This prevents unauthorized attempts to begin the car as only the correct keys will be able. It is believed that this technology will be more secure than traditional keys for cars because it makes it much harder for a thief to “hot wire” a vehicle and start it. But it's not foolproof, and thieves have found ways to deceive and defy the system – so that even vehicles with transponder keys are not immune from theft. Based on the make and model of your car You may be able to program a new transponder key by yourself with a key programer that is compatible with your particular car. The key programmer should come with an easy-to-follow guide to walk you through the process of programming your key. Once you have your key and a key programmer, follow the steps carefully and make sure the security light on your dashboard is turned on prior to turning your engine ON. If you're not comfortable with using a key programmer or if your vehicle includes more advanced features such as remote head keys or smart keys, you can turn to a professional locksmith for help. They will have the tools and equipment required to cut blank keys, erase the old one from the computer of the car, and then program the new key for it to function correctly. This will save you time and money, and keep your car's safety system functioning as it should. It is also safer than doing it yourself. Using car key cutting and programming or following unofficial guides can corrupt the information in the car's system, resulting in your new key not functioning. Remotes If your car keys don't work, you might need to reprogram them. This is a simple procedure for a lot of modern cars that utilize key fobs. However, some models are more complicated and must be programmed with the help of a special device that's usually available from a auto locksmith or dealer. To prevent theft of vehicles, modern car manufacturers have improved the security of their key systems. The key system is designed to avoid hot-wiring which is using a key from an other vehicle to start your car's engine. To make this process work you'll require at least two key fobs functioning for your vehicle. It's important to have at minimum two spare keys in your possession. Key fobs are equipped with electronic chips which communicate with the car's radio via radio signals. The computer compares the key's code with the database. If the codes match, the car will start. If not, the vehicle will not start or fail to start. Fortunately, the majority of electronic keys can be programmed and replaced by an expert auto dealer or a locksmith equipped with the proper equipment. The process should be relatively simple if you are able to find a cheap key programmer on the internet or at an auto parts store. You will need to follow a set-up which include inserting the ignition key, turning it on, without starting the vehicle, then turning off the key. You'll need to repeat this process a certain number of times within a specified time frame for your vehicle to enter programming mode. The door locks will turn on and off or chime. Some modern cars are only capable of being programmed using a tool that is connected to the onboard diagnostic port or EEPROM programming. These tools are expensive and therefore are not accessible to the majority of car owners. The majority of car experts recommend consulting with a reputable auto dealership or locksmith to program your keys.