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How to Program a Car Key Modern cars have more than a key that will start the engine. They also come with a remote control which can be used to lock or unlock doors. Key fobs must be programmed to work properly. It is possible to pre-program some car keys by the owner, however it is advised to consult a professional. This will avoid any damage to the computer system of the car and ensure that the key is working properly. How to program the key Up until the turn of the 21st century the majority of cars utilized basic key systems. The keys themselves were just metal and had grooves that were connected to the internal parts of the ignition cylinder. However, as time progressed and technology improved as it did, car manufacturers began blending electronic and physical protocols to stop theft. These key systems are called transponder keys or chip keys, and are designed to make it more difficult for thieves to open the vehicle. The key chips that are in the keys have a unique serial number, which transmits a signal to the receiver inside of your car. When the signal is received, it compares it to the code that is stored in the car's computer. If the codes match, the car will start. If not, it will not start at all. This is one of the main reasons to keep a spare key in your car, especially if you have an electronic transponder. You'll require special equipment to learn to program keys. You'll also require an uncut key for your specific make and model. You can purchase these at an auto locksmith or a locksmith dealership, but it's important to purchase the correct keys. If you use a key from another model, it won't function. Start the process by inserting the new key in the ignition and turning it to “on”. It is necessary to keep the key in this position for approximately 10 minutes and 30 seconds. Once the time has expired you can take out your key and see if the security indicator on your dashboard has gone off. If it did not then you'll need to repeat the procedure a third time. This method is only compatible with GM vehicles and isn't 100% secure. If you want a more secure and reliable solution go to a locksmith or a dealer to get your vehicle programmed with an embedded chip. They will have the tools and equipment to connect to the diagnostic port on your car's motherboard and make the change. Keyless Entry Systems Keyless entry systems give property access without requiring an actual credential. They use a combination of sensors and an onboard computer to provide security. This lets you control the system and monitor activities from any location on your property, and removes the need for locks or keys. The system is also able to detect and deactivate lost or stolen cards. In addition, the latest models are cloud-based and permit remote management and configuration. Modern automobiles are equipped with keyless entry systems. To make this work it emits radio signals that are detected by a particular key fob. The signals are then compared to the code that is stored in the car's computer, and if all is in order the car will be able to unlock. The car will not start if the signals are not the same. If program car keys has not been already programmed, you may follow a series of steps to program it. You'll first need to be sure that all doors except the driver's door are locked. You'll need the original key fob as well as any additional devices you want to program. You may also visit your local auto parts store to see if they have the right tool for your car. If none of these options work, you will have to consult your owner's manual, or an expert locksmith. Once you have the right tool You can begin the reprogramming of your key fob following the instructions provided by the manufacturer. 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 within a specific time. The car may respond by cycling doors or emitting an audible chime, which is an indication that the key has been successfully programmed. Many locksmiths employ special tools to get around the EEPROM security that is built into your car's remote or key fob. This is a risky method and can cause corruption of the data stored in the car's computer. It is best to let an expert handle this because they will be able to minimize the risk of data corruption and also ensure that your keys are correctly programmed. Transponder Keys Transponder keys, also known as chip keys, are equipped with a microchip embedded in the head of the key. When the key is inserted into the barrel of the ignition lock, and then turned to the ON position the antenna ring emits a burst of electromagnetic energy through the transponder chip. The chip absorbs the energy and then transmits a radiofrequency signal which contains an identification number. This code matches the unique digital serial numbers that are stored in the computer of the car. This prevents any attempts by anyone else to start the car since only right keys can be used. This type of technology is thought to be more secure than the traditional car key because it makes it harder for a criminal to “hot wire” the vehicle to start it. It's not foolproof, and thieves have discovered ways to trick and defeat the system. So even cars with transponder keys aren't protected from theft. You may be able program a transponder key yourself with an appropriate key programmer for your car. The key programmer will come with a guide that walks you step-bystep through the process. Once you have the key and a key programmer, follow the instructions carefully and make sure the security light on your dashboard is turned ON before turning your engine ON. If you're not comfortable with the use of a key programmer or if your vehicle has more advanced features like remote head keys or smart keys, you can turn to a professional locksmith help. They'll have the tools and equipment necessary to cut an uncut key, erase the old one from the computer in the car, and then program the new key for it to function correctly. This will save your time and money, and will ensure that your car's security system operating just as it should. It's also a lot more secure than doing it yourself! If you use the wrong key programmer or follow unofficial instructions and the data in your car's computer could be corrupted, and the new key will not function. Remotes It is possible to change the programming of your car keys if they aren't working. It's an easy process for most modern cars that use keyfobs. Certain models are more complicated and require a special 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 decrease the risk of theft from vehicles. The key system was designed to stop hot-wiring (the practice of using a key from another vehicle to start the engine) and other similar methods. To make this process work, you will require at least two key fobs working for your vehicle. This is one of the main reasons why it's recommended to have at least one spare key available. Key fobs are equipped with electronic chips which communicate with the car's radio via radio signals. The computer checks the code of the key with the database. If the codes match the car will begin. If the codes don't match then the car will not start or remain dead. Luckily, most of these electronic keys can be repaired and programmed by an expert locksmith or auto dealer equipped with the proper equipment. If you're able to find a cheap car key programmer on the internet or at an auto parts store, the process will be relatively simple. You'll need to follow a set of steps that include inserting the ignition keys, turning it on without actually starting the vehicle, then turning off the key. You'll have to repeat this a certain number of times within a specified time period for your vehicle to enter programming mode. This will be indicated by the door locks chiming or a chime that sounds audible. Certain cars of the present can only be programmed with the aid of a tool connected to the onboard diagnostics port or an EEPROM programming procedure. Unfortunately, most of these devices are very expensive, and therefore unattainable for most car owners. Most car experts recommend consulting with a reputable auto dealership or locksmith to program your keys.