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How to Program a Car Key Modern cars have more than just a key which starts the engine. They also come with a remote control that allows you to lock or open doors. These key fobs have to be programmed in order to function. It is possible to pre-program some car keys by the owner, but it is best to consult a professional. This will ensure that there is no damage to the computer system of the car and ensure that the key functions correctly. How to program a Key The majority of cars had basic keys systems until the turn of the 21st century. Keys were made from metal and had grooves to match the internal components of the ignition cylinder. As technology advanced, more and more car makers began to combine electronic and physical protocols in order to prevent theft. These key systems are known as transponder keys or chip keys, and are designed to make it difficult for thieves to start the vehicle. The key chips that are in the keys have a unique serial number that transmits an electronic signal to the receiver in your car. When the signal is received, it compares it to a code stored in the car's computer. If the codes match the car will begin to begin to start. If not, it won't start at all. This is why you should keep an extra car key, particularly if your system is based on transponders. If you're interested in learning how to program keys, you'll require some specific equipment. You'll also need to purchase a blank key that matches your specific make and model. These can be purchased at the dealership or through locksmiths but you must make sure that they are the right ones. If you use a key that is for another model, it won't function. Start the process by inserting the new key into the ignition and turning it “on”. You'll need to leave the key in this position for approximately 10 minutes and 30 seconds. Once the time is up you can take out the key and check whether the security light on your dashboard went out. If it didn't you'll have to repeat the procedure a third time. Remember that this method will only work on GM vehicles however it isn't completely secure. If reprogram car key looking for a more secure and reliable option, you should seek out a professional locksmith or the dealer to get your vehicle programmed with a chip. They will have the tools and equipment to connect to the onboard diagnostic port of your car and make the change. Keyless Entry Systems Keyless entry systems give property access without requiring the use of a physical ID. Security is offered by a combination between sensors and an onboard computing device. It is possible to manage 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 then deactivate them. The most recent models also permit remote management and configuration, and are cloud-based. Modern automobiles are equipped with keyless entry systems. The system works by emitting radio signals which are received 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 won't start in the event that the signals are not identical. There are several ways to program your new key fob, if it isn't already programmed. You'll first need to make sure that all doors, except the driver's door are locked. You'll need to have the original key fob and any other devices you wish to program. You can also try your local auto parts store for the right programming tool for your vehicle. If none of these methods work, you'll need to consult your owner's manual or a professional locksmith. Once you have the correct tool, follow the manufacturer's instructions to begin programming your key fob. This procedure is usually quick and simple. For instance, you could 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 short time. The car could then respond by cycling the door locks or generating a chime to signal that the key has been successfully programmed. Many locksmiths use special tools to bypass the EEPROM security features that are built into your car's remote or key fob. This is a risky technique and can corrupt the data stored in the car's computer. automotive key programming is best left to a professional, who can lower the chance of data corruption and ensure that your keys are programmed correctly. Transponder Keys Transponder keys, sometimes referred to as chip keys, are equipped with a microchip built into the head of the key. The antenna ring transmits electromagnetic energy to the transponder whenever the key is placed into the barrel of the ignition lock. The chip absorbs this energy and then transmits a radiofrequency signal which contains an identification number. This code is in line with the unique serial numbers of the car's computers. This prevents unauthorized attempts to start the car, since only the right key will be able to perform the task. This technology is believed to be more secure than conventional car keys because it makes it more difficult for thieves to “hot wire” an automobile and start it. It's not foolproof, and thieves have found ways to evade detection and defeat the system. So even cars equipped with transponder key are not protected from theft. Depending on the make and model of your car, you may be in a position to program a brand new transponder key yourself using a key programmer that's compatible with the car you own. The key programmer should include an easy-to-follow guide to guide you through the procedure of programming your key. Once you have your key and key programmer, follow the directions carefully and make sure the security light on your dashboard is ON prior to turning the engine ON. 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 for assistance. They'll have the right tools and equipment to cut your blank key, delete your old one from your car's computer and then program the new one so that it will work correctly. This will save your time and money, and will keep your car's security system operating as it should. Plus, it is much safer than making it yourself. Making use of the wrong key programmers or following unofficial guides can cause a problem with the information stored in your car's system, and result in your new key not functioning. Remotes You may need to reprogram your car keys if they aren't working. This is a simple procedure for most modern cars that use key fobs. Some models are more complex and require a specific programming device, which is typically available from the dealer or through auto locksmiths. Fortunately, the majority of modern automobile manufacturers have improved their key systems to be more secure in order to reduce vehicle thefts. The key system is designed to prevent hot-wiring, which is the practice of using a key from a different vehicle to start your car's engine. As a result, you'll need to have at minimum two working key fobs for your vehicle to make the process work. This is just one of the reasons why it's recommended to have at least one spare key on hand. The key fobs have electronic chips 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 starts. If not, the car will be dead or refuses to start. Most electronic keys can be programmed and replaced by an expert locksmith or auto dealer with the proper equipment. The process is fairly simple if you are able to locate a key programmer that is cheap on the internet or in an auto parts store. You'll need to follow a particular sequence of steps, which includes inserting the key into the ignition and turning it on, but not starting the engine, then turning off the key. You'll have repeat the steps a specific number of times over the timeframe you specify to get your vehicle into programming mode. This is indicated by the door locks cycling or a chime that sounds audible. Some modern vehicles are capable of programming using a device connected to the onboard diagnostic port or EEPROM programming. Most of these tools are costly and therefore are not accessible to the majority of car owners. As such, most experts in the field recommend that you speak with an expert locksmith or dealer to program your keys.