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How to Program a Car Key Modern cars come with more than 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. It is possible to pre-program certain keys for cars by the owner, however it is recommended to speak with a professional. This will help to avoid any damage to the car's computer system and also ensure that the new key is working properly. How to program a Key Most cars had basic key systems until the turn of 21st century. The keys themselves were metal and featured grooves that corresponded to the internal components of the ignition cylinder. As technology advanced, more and more automobile manufacturers began to combine electronic and physical protocols to stop theft. These key systems are known as transponder keys or chip keys, and are designed to make it more difficult for thieves to start the vehicle. The key chips in the keys have a specific serial number, which transmits an electronic signal to the receiver inside 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, the car will start. If the codes don't match, then your vehicle won't start at all. This is one of the primary reasons to keep a spare key for your car, especially if you have transponder-based systems. You'll require special equipment to learn how to program keys. You'll need a blank key that matches the car's model and make. automotive key programming can be bought at the dealership or through locksmiths however, you must be sure they're the correct ones. If you use a key that is for another model, it will not work. To begin the process, simply insert the new key into the ignition and turn it to the “on” position. You'll need to keep the key in this position for approximately 10 minutes and 30 seconds. When the time has passed, you can remove the key and see whether the security indicator on your dashboard went out. If it didn't, you'll need to repeat the process for the third time. Remember that this method can only work with GM vehicles, and it's still not foolproof. If you're looking for a more secure and reliable method, you should consult a professional locksmith or dealer to have your car programmed with chips. They are equipped with the tools and equipment required to connect to the diagnostics port in your car and perform the change. Keyless Entry Systems Keyless entry systems allow access to properties without the requirement of an actual credential. They utilize sensors in combination with an onboard computer to offer security. This lets you control the system and monitor activities from any location within the property, and it does away with the need for locks or keys. The system can also identify stolen or lost cards and deactivate them. The most recent models also permit remote management and configuration, and are cloud-based. The majority of modern cars are equipped with the keyless entry system. The system works by emitting radio signals which are detected by an specialized keyfob. The signals are then compared with the correct code that is stored in the car's computer and when everything is in order the car will be able to unlock. If the signals do not match and the car does not start. If your key fob is not already programmed, you can follow a few steps to program it. You'll first need to be sure that all doors, except the driver's door are locked. reprogram car key 'll also need the original key fob as well as any extras you'd like to program. You could also check with the local auto parts store for the right tool to program your vehicle. If these steps don't work, you'll need to check the owner's manual, or an expert locksmith. Once you have the proper tool, you can begin the process of reprogramming your key fob following the instructions of the manufacturer. The process is usually simple and quick. For example, you might be instructed to insert your new key into the ignition while keeping the doors shut, and then press an appropriate button on the fob within a brief time. The car may respond by cycling door locks or emitting an audible sound as an indication that the key has been successfully programmed. Many locksmiths are equipped with special tools that permit them to bypass the built-in EEPROM security on your car's key fob or remote. This is a dangerous method and could cause data corruption in your car's computer. This should be left to a professional who can minimize the risk of data corrupting and ensure that your keys are correctly programmed. Transponder Keys Transponder keys are also referred as chip keys. They feature a microchip embedded in the head of the keys. The antenna ring transmits electromagnetic energy to the transponder when the key is put into the barrel of the ignition lock. The chip absorbs this energy, and then transmits a radiofrequency signal that contains an identification code. The code is matched to the unique digital serial numbers that are stored in the computer system of the car. This is to prevent unauthorized attempts to begin the car, as only proper keys will be able to do so. The technology is believed to be more secure than conventional car keys because it makes it much difficult for thieves to “hot wire” a vehicle and start it. It's not foolproof, and thieves have found ways to evade detection and defeat the system. So even cars with transponder key are not immune to theft. You might be able to program a transponder key on your own when you have an instrument that works with your car. The key programmer should come with a step-by-step guide that will walk you through the procedure of programming your key. Follow the directions and turn on the security lights on your dashboard prior to beginning your engine. You can seek out an expert locksmith to assist you if you're not sure about using a key programmer or if you have a car with more advanced features, like 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 program the new key for it to function correctly. This will save you money and time, and keep your car's safety system functioning just as it should. Additionally, it's much safer than making it yourself. Using the wrong key programmers or following unofficial instructions could alter the information stored in the vehicle's system and result in the new key not functioning. Remotes You may need to reprogram your car keys if they're not working. This is a straightforward procedure for a lot of modern cars that utilize key fobs. However, some models are more complicated and must be programmed using an additional device that's typically available from the dealer or auto locksmith. To reduce vehicle thefts Modern car makers have improved the security of their key systems. The key system was designed to stop hot-wiring (the method of using another vehicle's key to start the engine) and other similar methods. To be able to make this process work, you will need at least two key fobs working for your vehicle. It's essential to have at least two spare keys available. The keys have electronic chips inside them that communicate with the car's receiver using radio signals. The computer checks the key's code with the database. If the codes match, the car will start. If the codes do not match then the car will not start or remain dead. Fortunately, the majority of electronic keys can be replaced and programmed by a professional locksmith or auto dealer with the right equipment. The procedure should be fairly simple if you are able to find a cheap key programmer on the internet or in an auto parts store. You'll need to follow a set of steps that include inserting the key into the ignition and turning it on, but not running the engine, then turning off the key. You'll need to repeat this process a certain number of times within a specific time period to allow your vehicle to enter programming mode. The door locks will turn on and off or chime. Some modern vehicles are capable of being programmed using a tool that is connected to the onboard diagnosis port or EEPROM programming. These tools are expensive and therefore are not accessible to the majority of car owners. Most car experts recommend consulting with a reputable auto dealership or locksmith to program your keys.