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How to Program a Car Key Modern cars have more than just a key that starts the engine. They also have a remote control which can be used to lock or open doors. These key fobs must be programmed to function. Certain keys for cars can be preprogrammed by the owner himself, but it's best to consult with a professional. This will avoid any damage to the computer system, and also ensure that the new key functions properly. How do you program a key Most cars had basic key systems until the turn of 21st century. The keys were made of metal and featured grooves that match the internal components of the ignition cylinder. As time went on and technology improved and improved, automobile manufacturers began to combine physical and electronic protocols to prevent theft. These key systems are known as transponder keys or chip keys and are designed to make it more difficult for thieves to get into the vehicle. The key chips contain an unique serial number that transmits a message to the receiver in your car. When the signal is received, it compares it to the code that is stored in the car's computer. If the codes match, then the car will start. If not, it will not start at all. This is one of the main reasons to keep a spare key on your car, especially if you have an electronic transponder. 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 model and make of your car. You can buy them at an auto locksmith or a locksmith dealership, but it's crucial to purchase the correct keys. If automotive key programming attempt to use a key that is from another model, then it won't work. Start by inserting the new key into the ignition and turning it to “on”. You'll need to keep the key in this position for approximately 10 minutes and 30 seconds. When the time has passed you can take off the key and see whether the security indicator on your dashboard went out. If it didn't then you'll need to do it again for the third time. Keep in mind that this method will only work on GM vehicles, and it's still not 100% secure. If you want a more secure and reliable option, you can visit a locksmith or dealer to have your car programmed with an embedded chip. These professionals are equipped with the tools and equipment required to access the onboard diagnostics port of your vehicle and make the switch. Keyless Entry Systems Keyless entry systems give property access without requiring an actual credential. They make use of a combination of sensors and an onboard computer for security. This lets you control the system and monitor activities from any place within the property, and it removes the requirement for keys or locks. The system is also able to detect lost or stolen cards and deactivate them. The newest models also allow 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 that are detected 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 start to unlock. If the signals don't match and the car does not start. There are a variety of ways to program your new key fob if it isn't already programmed. First, you'll need to make sure that all doors except the driver's door are locked. You'll need the original key fob along with any extras that you want to program. You can also visit your local auto parts store to determine if they carry the right tool for your vehicle. If these steps don't work, you will have to consult the owner's manual, or an expert locksmith. Once you have the proper tool You can begin the process of reprogramming your key fob by following the manufacturer's instructions. This process is often relatively quick and easy. You might be told to insert the new key in the ignition after closing all doors and then press the button on the keyfob after the time frame. The car may respond by reversing the door locks or emitting an audible chime, which is a sign that the key was successfully programmed. Many locksmiths employ special tools to get around the EEPROM security that is built into the remote of your car or key fob. However it's an extremely risky option and has the potential of corrupting the data on the computer in your car. It is best to let an expert handle this, as they will be able to minimize the chance of data corruption and make sure that your keys are programmed correctly. Transponder Keys Transponder keys are also known as chip key. They feature a microchip embedded inside the head of the keys. When the key is placed in the barrel of the ignition lock and then turned into the ON position, the antenna ring sends an energy burst through the transponder chip. This energy is absorbed into the chip, which then transmits a radio frequency signal with an identification code that corresponds with the unique serial number in the car's computer system. This helps prevent unauthorised attempts to start the car since only the right key can perform the task. The technology is believed to be more secure than a conventional car key since it makes it harder for a thief “hot wire” the vehicle and then start it. It's not foolproof and thieves have found ways of tricking and defeating the system. So even cars with transponder keys aren't protected from theft. You could be able to program a transponder key yourself if you have an appropriate key programmer for your vehicle. The key programmer comes with a user guide that will take you step-by-step through the process. Follow the steps and switch on the security light in your dashboard prior to starting your engine. If you're uncomfortable using a key programmer, or if your car comes with more advanced features, such as remote head keys or smart keys, you can go to a professional locksmith help. car key programming 'll have the appropriate tools and equipment to cut the blank key, remove your old one from your car's computer and then program the new key so that it will work properly. This will save your time and money, and will help keep your car's security system operating exactly as it should. Plus, it is much safer than doing it yourself. Making use of the wrong key programmers or following unofficial instructions could cause a problem with the information stored in your vehicle's system and result in the new key not functioning. Remotes If your car keys don't work you may need to change the programming. It's a straightforward process for most modern vehicles which use keyfobs. Some models are more complex and require a special programming device, which is usually available from the dealer or through auto locksmiths. To reduce vehicle thefts Modern car makers have improved the security of their key systems. The key system is designed in a way to prevent hot-wiring, which is the practice of using a key from a different vehicle to start the engine of your vehicle. As a result, you'll need at least two functioning key fobs for your vehicle in order to ensure that the process works. It's important to have at minimum two spare keys on hand. The key fobs have electronic chips which communicate with the car's radio via radio signals. The computer examines the code of the key with the database. If the codes match the car will be able to start. If not, the car will remain dead or refuse to start. Luckily, most of these electronic keys can be repaired and programmed by a professional auto dealer or a locksmith equipped with the proper equipment. The procedure should be fairly simple if you can locate a key programmer that is cheap on the internet or at an auto parts store. You'll need to follow a sequence of steps that includes inserting the key into the ignition and turning it on, but not activating the engine, then turning the key off. You'll need to repeat this a certain number of times within a certain time period for your vehicle to enter programming mode. The door locks will be triggered or chime. Certain modern vehicles can only be programmed with the aid of a tool that's connected to the diagnostics port on the car's motherboard or an EEPROM programming procedure. Unfortunately, most of these tools are incredibly expensive, making them unaffordable for most car owners. Therefore, the majority of car experts recommend that you speak with a professional locksmith or auto dealer to program your keys.