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How to Program a Car Key Modern cars come with more than just a key which starts the engine. They also come with a remote that can lock or open doors. These key fobs need to be programmed in order to function properly. Some car keys can be preprogrammed by the owner, however it's best to consult with an expert. This will avoid any damage to the computer system of the car and ensure that the key functions correctly. How do you program the key Most cars had basic key systems up until the turn of the 21st century. The keys were made of metal and had grooves to correspond with the internal parts in the ignition cylinder. As technology advanced, more and more automobile manufacturers began to combine electronic and physical protocols in order to prevent theft. These key systems are called transponder keys or chip keys, and are designed to make it difficult for thieves to start the vehicle. The key chips in the keys have a unique serial number that transmits an electronic signal to the receiver inside of your car. The signal is then compared to a code in the computer of the car when it is received. If the codes match, your car will begin to start. If the codes aren't compatible, your car will not even start. This is the reason you should keep an extra car key especially if your system is based on transponders. You'll require specialized equipment to learn how to program keys. You'll need a blank key that matches your car model and make. They can be purchased from the dealership or through a locksmith however, you must be sure that they are the correct ones. If you attempt to use a key that is from an alternative model, it will not work. To start the process, you need to insert the new key into the ignition and switch it to the “on” position. It is necessary to leave the new key in this position for approximately 10 minutes and 30 seconds. After the time has expired you can take off the key and observe whether the security light on your dashboard was gone. If it didn't go out, you will need to repeat the process a third time. Be aware that this method can only work on GM vehicles, and it's still not completely secure. If you're seeking a more secure and reliable solution, then you should visit an expert locksmith or dealer to have your car programmed with chips. These professionals have the necessary tools and equipment to connect to your car's onboard diagnostics port and make the change. Keyless Entry Systems Keyless entry systems permit property access without the need for a physical ID. Security is achieved through sensors that are combined with an onboard computer. It is possible to manage and monitor the system from anywhere in the property. Keys and locks are not required. The system can also identify lost or stolen cards and disable them. The latest models also support remote management and configuration, and are cloud-based. Modern cars are equipped with keyless entry systems. To enable this feature it emits radio signals that are detected by a particular key fob. The signals are compared with the code stored in the car's computer and, if all is in order, the car will unlock. The car won't start when the signals aren't the same. If your key fob isn't already programmed, it is possible to follow a series of steps to programme it. First, you'll need ensure all the doors are locked, with the exception of the driver's side. You'll need to have the original key fob along with any other devices you wish to program. You can also visit your local auto parts shop for the appropriate programming tool for your vehicle. If these steps don't work, you'll need check the owner's manual, or an expert locksmith. Once you have the right tool, you can 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 into the ignition when all doors are shut and then press the button on the keyfob after a specific time. The car might then respond by adjusting the door locks or emitting a chime to signal that the key has been successfully programmed. A lot of locksmiths utilize special tools to get around the EEPROM security that is built into the remote of your car or key fob. However this is an extremely risky procedure and has the potential of corrupting the data on your car's computer. This is best left to a professional who can reduce the risk of data corruption and make sure that your keys are properly programmed. Transponder Keys Transponder keys are also known as chip keys. They feature embedded microchips in the head of keys. The antenna ring transmits electromagnetic energy to the transponder whenever the key is put into the ignition lock barrel. The chip absorbs the energy and then transmits a radio frequency signal that contains an identification code. The code is matched to the unique digital serial numbers in the computer of the car. This is to prevent any attempts by anyone else to start the car as only the proper keys will be able to do so. The technology is believed to be more secure than the traditional car key since it makes it harder for thieves to “hot wire” the vehicle and then start it. It's not foolproof and thieves have discovered ways of tricking and defeating the system. So even cars equipped with transponder key are not safe from theft. You might be able to program a transponder key on your own if you have an instrument that works with your car. The key programmer will come with a user guide that walks you step-bystep through the procedure. Follow the steps and switch on the security light on your dashboard prior to beginning 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 may turn to a professional locksmith for help. They'll have the appropriate tools and equipment to cut your blank key, delete your old one from your computer in your car and then program the new one so that it functions correctly. This will save you time and money and will help keep your car's security system functioning just as it should. Additionally, it's much safer than doing it yourself. Using the wrong key programmers or following unofficial instructions could corrupt the information in the vehicle's system and result in the key not working. Remotes If your car keys aren't working it could be necessary to change the programming. automotive key programming 's an easy process for the majority of modern cars that have key fobs. However, some models are more complicated and need to be programmed using an additional device that's typically available from a dealer or auto locksmith. To prevent theft of vehicles Modern car makers have increased the security of their key systems. The key system is designed to prevent hot-wiring (the method of using a key from another vehicle to start the engine) and other similar methods. This means that you'll require at least two working key fobs for your vehicle in order to make the process work. This is just one of the reasons why it's a good idea to always have at least one spare key in your possession. The key fobs have electronic chips that transmit radio signals with the car's receiver. The computer checks the code of the key with the database. If the codes match, the car will start. If the codes do not match, the car will not start or will remain dead. The majority of these electronic keys can be programmed and replaced by an experienced locksmith or dealer in the field with the proper equipment. If you can find a cheap car key programmer on the internet or at an auto parts store, the process should be fairly straightforward. You'll have to follow a specific sequence of steps that includes inserting the key into the ignition and turning it on, without activating the engine, and then turning off the key. You'll need repeat the steps a specific number of times in an exact time period to put your vehicle into programming mode. This is indicated by the door locks chiming or an audible chime. Some modern cars can only be programmed by means of a tool that's connected to the diagnostics port on the car's motherboard or an EEPROM programing procedure. These tools are very expensive and therefore are not accessible to most car owners. Most car experts recommend consulting with a reputable auto dealership or locksmith to program your keys.