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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 control that allows you to lock or unlock doors. Key fobs have to be programmed in order to function properly. It is possible to pre-program certain keys for cars by the owner, however it is best to consult a professional. This will ensure that there is no damage to the computer system of the car and will ensure that the key functions correctly. 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 were connected to the internal parts of the ignition cylinder. As time went on and technology advanced as it did, automobile manufacturers began blending electronic and physical protocols to prevent theft. Key systems also known as transponder keys or chips keys are designed to make it more difficult for thieves to steal an automobile. The key chips in the keys have a unique serial number that transmits signals to the receiver inside your car. When the signal is received, it compares it to a code stored in the car's computer. If the codes match, your car will start. If not, it won't start at all. This is why you should keep a spare car key, particularly if your system is based on transponders. You'll require special equipment to learn to program keys. You'll also need to purchase an uncut key for your specific make and model. You can purchase them from a locksmith or a car dealership, but it's essential to get the right ones. If you try to use a key from another model, then it won't work. To start the process, you need to insert the new key into the ignition and turn it to the “on” position. You'll need to leave the key in this position for around 10 minutes and 30 seconds. When the time has passed you can take out the key and see whether the security indicator on your dashboard went out. If it didn't then you'll need to do it a third time. Keep in mind that this method will only work on GM vehicles however it isn't completely secure. If you're looking for a more secure and reliable option, you can visit a locksmith or a dealer to have your car programmed with an embedded chip. They will have the tools and equipment to connect to your car's onboard diagnostics port and then make the change. Keyless Entry Systems Keyless entry systems provide access to your property without the need for a physical credential. They make use of sensors in conjunction with an onboard computer to offer security. It is possible to manage and monitor the system from anywhere in the property. Keys and locks are not required. The system can also detect and disable stolen or lost cards. Additionally, the most recent models are cloud-based and allow for remote management and configuration. Modern automobiles are equipped with keyless entry systems. To accomplish this it emits radio signals that are picked up by a specific key fob. The signals are compared to the code stored in the car's computer, and if all is in order the car will be able to unlock. If the signals do not match then the car won't start. There are several ways to program your new key fob if it isn't already programmed. First, you'll need make sure that all doors are locked, with the exception of the driver's side. You'll need the original key fob as well as any extras that you want to program. You could also check with your local auto parts store because they might have the appropriate programming tool for your vehicle. If these steps do not work, you'll have to go through the owner's manual or an expert locksmith. Once you have the right tool, follow the manufacturer's instructions to begin reprogramming your key fob. This procedure is usually quick and simple. For instance, you could be asked to insert your new key into the ignition with all doors shut and then press an appropriate button on the fob within a very short time frame. The car might respond by turning off the door locks or emitting an audible chime as a sign that the key was 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. But this is a risky method and could lead to the possibility of destroying the data stored on the computer in your car. It is recommended to have an expert handle this task as they'll be able to reduce the risk of data corruption and make sure that your keys are correctly programmed. Transponder Keys Transponder keys, also known as chip keys, have an embedded microchip in the head of the key. When the key is inserted into the barrel of the ignition lock and turned to ON the antenna ring transmits a burst of electromagnetic energy through the transponder chip. This energy is absorbed by the chip, which then transmits an audio frequency signal that contains an identification code that matches up to the unique serial number in the car's computer system. This is to prevent unauthorised attempts to start the car as only the correct keys will be able. The technology is believed to be more secure than traditional car keys because it makes it much difficult for thieves to “hot wire” an automobile and get it started. But it's not foolproof and thieves have found ways to trick and defeat the system – so that even vehicles with transponder keys are not safe from theft. You may be able program a transponder key by yourself with an instrument that works with your vehicle. The key programmer will come with an instruction manual that will walk you through the procedure of programming your key. Follow the instructions and turn on the security light on your dashboard prior to beginning your engine. You can seek out a professional locksmith to help you if you're not confident using the key programmer or you own a car that has more advanced features, such as remote head keys or intelligent keys. They'll have the tools and equipment necessary to cut a blank key, delete the old one from the computer of the car, and then program the new key for it to function properly. This will help you save money and time and will keep your car's safety system operating as it should. Plus, it is much safer than making it yourself. Utilizing the wrong key programming software or following unofficial guides can cause a problem with the information stored in your vehicle's system and result in the new key not functioning. Remotes If your car keys don't work you may need to reprogram them. This is a straightforward procedure for most modern cars that utilize key fobs. Some models are more complex and require a specific programming device, which is usually available from the dealer or through auto locksmiths. To reduce vehicle thefts Modern car makers have improved the security of their key systems. The key system is designed to avoid hot-wiring which is the practice of using a key from a different vehicle to start the engine of your vehicle. To be able to make this process work, you will need at least two key fobs functioning for your vehicle. This is one of the main reasons why it's recommended to have at least one spare key on hand. Key fobs are equipped with electronic chips which communicate with the car's receiver via radio signals. The car's computer then compares this code on the key to the one in its database. If car key programming match the car will begin. If not, the car will remain dead or refuse to start. Luckily, most of these electronic keys can be repaired and programmed by a professional locksmith or an auto dealer using the appropriate equipment. The process is fairly simple if you can find a cheap key programmer on the internet or at an auto parts store. You'll have to follow a set of steps which include inserting the ignition keys, turning it on without actually starting the car, and then turning off the key. You will need repeat the steps a specific number of times within an exact time period to put your vehicle into programming mode. This will be evident by the door locks chiming or an audible chime. Some modern vehicles are capable of programming using a device connected to the onboard diagnosis port or EEPROM programming. Unfortunately, most of these devices are very expensive, and therefore unattainable for most car owners. Many experts in the field recommend consulting with a reputable auto dealership or locksmith to program your keys.