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How to Program a Car Key Modern cars have more than just a key which will start the engine. They also come with a remote control that can lock or open doors. These key fobs must be programmed in order to function. Certain keys for cars can be programmed by the owner, however it is best to speak with an expert. This will avoid any damage to the computer system of the car and will ensure that the key works correctly. How to program a Key The majority of cars had basic key systems until the turn of 21st century. The keys themselves were just metal with grooves that matched the internal components of the ignition cylinder. As technology improved the number of car makers began to mix electronic and physical protocols in order to prevent theft. These key systems are known as transponder keys or chip keys, and they're designed to make it harder for thieves to get into the vehicle. The key chips contain a unique serial code which transmits a signal to the receiver in your car. The signal is then compared to the computer of the car when it is received. 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 need special equipment to learn to program keys. You'll also need to purchase the blank key for your specific model and make. You can purchase them from an auto locksmith or a locksmith dealership, but it's crucial to buy the right one. If you use a key from another model, it will not function. To begin programming car key , simply insert the new key into the ignition and turn it to the “on” position. It is necessary to keep the key in this position for approximately 10 minutes and 30 seconds. After the time has passed you can take off your key and see if the security indicator on your dashboard has gone out. If it didn't then you'll need repeat the process another time. This method is only compatible with GM vehicles and isn't 100% secure. If you're looking for a more secure and reliable option, you can visit a locksmith or dealer to have your vehicle programmed with an embedded chip. These professionals are equipped with the tools and equipment required to connect to the onboard diagnostics port of your car and make the change. Keyless Entry Systems Keyless entry systems provide access to your property without the need for the use of a physical ID. Security is provided by sensors that are combined with an onboard computer. This lets you manage the system and monitor activity from any location on your property, and it does away with the requirement for locks or keys. The system is also able to detect and block stolen or lost cards. In addition, the latest models are cloud-based and allow for remote management and configuration. Modern automobiles are equipped with keyless entry systems. The system works by emitting radio signals that are received by an specialized keyfob. These signals are then compared to the correct code stored in the car's computer and if everything is in order the car will start to unlock. The car won't start if the signals are not identical. There are a variety of steps you can take 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 need the original key fob and any additional devices you want to program. You can also check your local auto parts store to determine if they carry the appropriate tool for your vehicle. If these steps do not work, you'll have to check the owner's manual, or a professional locksmith. Once you have the right tool, you can begin the reprogramming of your key fob by following the instructions of the manufacturer. This procedure is usually quick and simple. For instance, you could be instructed to insert your new key into the ignition with all doors closed and then press the button on the key fob within a very short time period. The car could then respond by cycling the door locks or emitting a sound to signal that the key was successfully programmed. A lot of locksmiths have tools that permit them to bypass the built-in EEPROM security of your car's key fob or remote. This is a risky method and can corrupt the data in your car's computer. This is best left to a professional who can minimize the risk of data corrupting and ensure that your keys are properly programmed. Transponder Keys Transponder keys are also known as chip key. They have embedded microchips inside the head of the keys. When the key is placed in the barrel of the ignition lock, and turned to ON the antenna ring transmits an energy burst through the transponder chip. The chip absorbs the energy and then transmits a radio frequency signal which contains an identification number. This code is in line with the unique serial numbers of the car's computers. This prevents unauthorised attempts to start the car as only the right keys can be used. It is believed that this technology will be more secure than traditional car keys because it makes it more difficult for thieves to “hot wire” a vehicle and get it started. It's not foolproof and thieves have found ways of tricking and defeating the system. So even cars equipped with transponder keys aren't protected from theft. Based on the make and model of your car, you may be in a position to program a brand new transponder key by yourself with a key programer that is compatible with the car you own. The key programmer should include an easy-to-follow guide to guide you through the process of programming your key. Once you have the key and key programmer, follow the steps carefully and make sure the security light on your dashboard is turned ON before turning your engine ON. You can ask a professional locksmith to help you if you are not confident using a key programmer or if you own a vehicle with more advanced features, such as remote head keys or intelligent keys. They will have the tools and equipment needed to cut blank keys, erase the old one from the computer of the car, and then program the new key for it to function properly. This will save your time and money, and will ensure that your car's security system working exactly as it should. Plus, it's a lot safer than trying to do it yourself! If you choose the wrong key programmer or follow unofficial instructions, the information in your car's system could be corrupted and the new key won't function. Remotes You may have to reprogramme your car keys if they don't work. This is a simple process for many modern cars that utilize key fobs. However, certain models are more complicated and must be programmed with the help of an additional device that's typically available from the auto locksmith or dealer. To decrease the risk of theft from vehicles, modern car manufacturers have increased the security of their key systems. The key system was designed to avoid hot-wiring (the practice of using the key of another vehicle to start the engine) and other similar methods. Therefore, you'll need at minimum two working key fobs for your vehicle in order to make the process work. It is essential to have two spare keys on hand. The key fobs have electronic chips inside them which communicate with the car's receiver via radio signals. The car's computer then compares this key's code to the one in its database. If the codes match the car starts. If not, the car will be dead or refuses to start. The majority of these electronic keys can be programmed and replaced by an experienced locksmith or dealer in the field with the appropriate equipment. The process is fairly easy if you find a cheap key programmer on the internet or at an auto parts store. You will need to follow a set-up that include inserting the ignition key and turning it on, without starting the car, and then shutting off the key. You'll have to repeat the steps a specified number of times within the timeframe you specify to put your vehicle into programming mode. This will be evident by the door locks chiming or an audible chime. Some modern cars are only capable of being programmed using a tool that is connected to the onboard diagnostic port or EEPROM programming. Unfortunately, most of these tools are extremely expensive, making them unaffordable for the majority of car owners. Many experts in the field recommend consulting with a professional auto dealership or locksmith to program your keys.