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How to Program a Car Key Modern cars come with more than a key that starts the engine. They also come with a remote which can be used to lock or open doors. These key fobs must be programmed in order to function. It is possible to program certain car keys by the owner, however it is recommended to speak with a professional. This will prevent any damage to the computer system of the car and ensure that the key is working properly. How do automotive key programming program a key? Up until the turn of the 21st century, most cars used basic key systems. Keys themselves were metal with grooves that matched the internal components of the ignition cylinder. As technology advanced, more and more automobile makers began to mix electronic and physical protocols to stop theft. These key systems are called transponder keys or chip keys and they're designed to make it more difficult for thieves to get into the vehicle. The key chips that are in the keys have a unique serial number, which transmits signals to the receiver in your car. When the signal is received it compares it with a code stored in the car's computer. If the codes match, the car will start. If not, it will not start at all. This is why it is important to keep an extra car key particularly if your system is transponder-based. You'll require special equipment to learn how to program keys. You'll also need the blank key that matches your specific make and model. You can purchase them from an auto locksmith or a locksmith dealership, but it's essential to purchase the correct keys. If you use a key for another model, it will not function. Start the process by inserting the new key in the ignition and turning it “on”. It is necessary to leave the new key in this position for approximately 10 minutes and 30 seconds. After the time is up you can take off your key and see if the security indicator on your dashboard has gone out. If it did not, you will need to repeat the procedure three times. This method is only compatible with GM vehicles and it's not foolproof. If you're looking for a more secure and reliable solution go to an auto locksmith or dealer to have your car programmed using an embedded chip. They have the tools and equipment needed to access your car's onboard diagnostics port and make the switch. Keyless Entry Systems Keyless entry systems permit access to properties without the need for a physical ID. They make use of a combination of sensors and an onboard computer for security. This lets you manage the system and monitor its activity from anywhere within the property, and it eliminates the need for locks or keys. The system can also identify and deactivate lost or stolen cards. In addition, the latest models are cloud-based, allowing for remote management and configuration. Modern automobiles are equipped with keyless entry systems. The system works by emitting radio signals which are detected by an specialized keyfob. The signals are compared with the code that is stored in the computer of the car and, if all is well the car will be able to unlock. The car will not start if the signals are not the same. There are a variety of ways to program your new key fob, if it's not programmed yet. 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 as well as any extras you'd like to program. You could also check with the local auto parts store for the right programming tool for your vehicle. If these steps don't work, you will need to consult your 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 manufacturer's instructions. This procedure is usually quick and simple. For instance, you may be instructed to insert your new key into the ignition with the doors shut, and then press a button on the key fob within a brief time period. The car may then respond by cycling the door locks or emitting a chime to indicate that the key has been successfully programmed. Many locksmiths have special tools that permit them to bypass the built-in EEPROM security in the car's key fob or remote. This is a risky technique and can corrupt the data in your car's computer. This should be left to a professional who can reduce the risk of data corruption and make sure that your keys are correctly programmed. Transponder Keys Transponder keys are also known as chip key. They have an embedded microchip in the head of the keys. The antenna ring transmits electromagnetic energy to the transponder whenever the key is placed in 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 digital serial numbers that are stored in the computer system of the car. This prevents unauthorised attempts to start the car as only the proper keys will be able to do so. This type of technology is thought to be more secure than a traditional car key, as it makes it harder for a criminal to “hot wire” the vehicle to start it. However, it's not foolproof and thieves have discovered ways to trick and thwart the system which means that even cars equipped with transponder keys are not safe from theft. Depending on the make and model of your vehicle depending on the make and model of your car, you might be capable of programming a new transponder by yourself with a key programer that is compatible with your particular car. The key programmer comes with a guide that walks you step-bystep through the procedure. Follow the instructions and switch on the security light in your dashboard before you start your engine. If you're not comfortable with using a key programmer or if your vehicle comes with more advanced features, such as remote head keys or smart keys, you can go to a professional locksmith assistance. They'll have the appropriate tools and equipment to cut your blank key, erase your old one from the computer in your car, and then program the new one so that it will work properly. 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. If you use a wrong key programmer or follow a guide that is not official, the information in your car's system can be corrupted and the new key won't function. Remotes If your car keys aren't working, you might need to change the programming. It's a simple procedure for the majority of modern cars that use keyfobs. Some models are more intricate and require a specific programming device, which is typically available at the dealer or through auto locksmiths. Fortunately, many modern car manufacturers have improved their key systems to be more secure to prevent theft of vehicles. The key system is designed to avoid hot-wiring (the practice of using the key of another vehicle to start the engine) and other similar methods. As a result, you'll need at least two working key fobs for your vehicle in order to be able to use the system. This is one of the reasons why it's recommended to have at least one spare key available. The key fobs contain electronic chips that transmit radio signals to the car's receiver. The computer in the car then compares the key's code to the one in its database. If the codes are the same the car will be able to start. If not, the car will be dead or refuses to start. Most electronic keys can be programmed and replaced by a professional locksmith or auto dealer with the proper equipment. The procedure should be fairly simple if you are able to find a low-cost key programmer on the internet or in an auto parts store. You'll have to follow a set of steps that include inserting the ignition key and turning it on without starting the car, and then switching off the key. You will need to repeat the steps a certain number of times within the timeframe you specify to get your vehicle into programming mode. This will be evident by the door locks turning or a chime that sounds audible. Some modern cars are only capable of being programmed using a tool that is connected to the onboard diagnostic port or EEPROM programming. Most of these tools are very expensive and therefore are not accessible to the majority of car owners. Most car experts recommend consulting with an experienced auto dealer or locksmiths to program your keys.