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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 come with a remote that can lock and unlock doors. Key fobs need to be programmed in order to work. It is possible to program certain keys for cars by the owner, however it is advised to consult an expert. This will avoid any damage to the car's computer system and ensure that the new key is working properly. How to program a Key Before the turn of the 21st century the majority of cars utilized basic key systems. Keys were made from metal and had grooves to correspond to the internal parts of the ignition cylinder. As technology improved, more and more car makers began to combine electronic and physical protocols to stop theft. These key systems are referred to as transponder keys or chip keys and are designed to make it difficult for thieves to open the vehicle. The key chips inside the keys have a unique 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 begin to begin to start. If the codes don't match, your car will not even start. This is one of the main reasons why you should always keep a spare key in your car, especially if you have a transponder-based system. If you're interested in learning how to program keys, you'll need some special equipment. You'll need to buy a blank key that is compatible with the model and make of your car. You can buy them at the locksmith shop or at a car dealership, but it's essential to purchase the correct keys. If you try to use a key from another model, then it will not work. Start the process by inserting the new key into the ignition and turning it to “on”. It is necessary to keep the key in this position for around 10 minutes and 30 seconds. After the time has passed you can take off your key and verify that the security indicator on your dashboard has gone out. If it didn't you'll have to repeat the procedure three times. This method is only compatible with GM vehicles and isn't foolproof. If you're seeking a more secure and reliable method, you should consult an expert locksmith or dealer to get your vehicle programmed with chip. They have the tools and equipment required to connect to the onboard diagnostics port in your vehicle and make the necessary changes. Keyless Entry Systems Keyless entry systems allow access to properties without the need for an actual credential. car key programming cost uk utilize a combination of sensors and an onboard computer for security. It is possible to control and monitor the system from anywhere within the property. Keys and locks are not required. The system is also able to detect lost or stolen cards and deactivate them. The latest models also support remote management and configuration and are cloud-based. Most modern cars come equipped with an entry system that is keyless. To accomplish this the car emits radio signals which are picked up by a special key fob. The signals are compared with the code stored in the computer of the car, and if all is well the car will be able to unlock. If the signals don't match, the car will not start. If your key fob has not been already programmed, you may follow a series of steps to program it. You'll first need to be sure that all doors except the driver's door are locked. You'll also require the original key fob along with any additional keys you want to program. You can also try your local auto parts store for the right programming 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 right tool, follow the manufacturer's instructions to begin programming your key fob. This procedure is usually quick and easy. It is possible to be instructed to put the new key in the ignition after closing all doors and then press the button on the keyfob after a specific time. The car could then respond by turning off the door locks or emitting a sound to indicate that the key was successfully programmed. A lot of locksmiths have tools that let them bypass the built-in EEPROM security of your car's key fob or remote. But it's an extremely risky option and has the potential of destroying the data stored on the computer in your car. It's best to have an expert handle this because they will be able to minimize the risk of data corruption and make sure that your keys are programmed correctly. 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 when the key is put into the barrel of the ignition lock. The chip absorbs this energy and then transmits a radiofrequency signal that includes an identification code. This code matches the unique serial numbers that are stored in the computer system of the car. This prevents an unauthorized attempt to start the car since only the right key can do so. It is believed that this technology will be more secure than conventional car keys because it makes it harder for a thief to “hot wire” the vehicle and start it. It's not foolproof, and thieves have found ways of tricking and defeating the system. Therefore, even vehicles with a transponder keys aren't protected from theft. Depending on the make and model of your car, you may be capable of programming a new transponder by yourself using a key programmer that's compatible with your specific car. The key programmer comes with a manual that will take you step-by-step through the process. Follow the directions and turn on the security light on your dashboard prior to starting your engine. If you're not comfortable using a key programmer or if your vehicle includes more advanced features such as remote head keys or smart keys, you may turn to a professional locksmith assistance. They will have the tools and equipment necessary to cut blank keys, erase the old one from the computer of the car, and then program the new key to function correctly. 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. Making use of the wrong key programmers or following unofficial guides can corrupt the information in the car's system, and result in your new key not working. Remotes If your car keys don't work, you might need to reprogram them. It's a straightforward process for most modern cars that have key fobs. Certain models are more complicated and require a special programming device, which is typically available at the dealer or through auto locksmiths. To decrease the risk of theft from vehicles, modern car manufacturers have improved the security of their key systems. The key system is designed to prevent hot-wiring (the practice of using a key from another vehicle to start the engine) and other similar methods. This means that you'll need at minimum two working key fobs for your vehicle in order to ensure that the process works. This is one of the reasons why it's a good idea to always have at least one spare key available. The key fobs contain electronic chips that communicate using radio signals with the car's receiver. The car's computer then compares the key's code with the one stored in its database. If the codes match, the car will start. If the codes don't match, the car will not start or will remain dead. Fortunately, the majority of electronic keys can be repaired and programmed by an experienced locksmith or an auto dealer with the right equipment. The procedure should be fairly simple if you are able to 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, which includes inserting the key into the ignition and turning it on, without starting the engine, and then turning off the key. You'll need repeat the steps a specific number of times over an exact time period to put your vehicle in programming mode. This will be indicated by the door locks turning or an audible chime. Certain modern vehicles can only be programmed with the help of a tool that's connected to the onboard diagnostics port, or an EEPROM programming process. Unfortunately, the majority of these tools are incredibly expensive, making them unaffordable for most car owners. As such, most experts in the field recommend to consult a professional locksmith or dealer to program your keys.