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How to Program a Car Key Modern cars have more than a key that starts the engine. They also come with a remote which can be used to lock or unlock doors. These key fobs have to be programmed to function. It is possible to program some car keys by the owner, but it is recommended to speak with a professional. This will ensure that there is no damage to the computer system of the vehicle and ensure that the key works correctly. How to Program a Key Prior to the beginning of the 21st century, the majority of cars utilized basic key systems. The keys themselves were just metal with grooves that corresponded to the internal components of the ignition cylinder. As technology improved, more and more automobile manufacturers began to combine physical and electronic protocols in order to prevent theft. Key systems are also referred to as transponder keys or chips keys, are designed to make it difficult for thieves to steal the vehicle. The key chips that are in the keys have a specific serial number, which transmits an electronic signal to the receiver in your car. When the signal is received it compares it with the code that is stored in the car's computer. If the codes are identical then your car will begin. If the codes aren't compatible, your car will not even start. This is one of the primary reasons why you should always keep a spare key on your vehicle, especially in the case of a transponder-based system. You'll require specialized equipment to be able to program keys. You'll need to buy an uncut key that matches the car's model and make. You can purchase these at a locksmith or a car dealership, but it's important to purchase the correct keys. If you use a key from another model, it won't work. Start by inserting the new key in the ignition and turning it “on”. You'll need to keep the key in this position for around 10 minutes and 30 seconds. After the time has passed you can take out your key and see if the security indicator on your dashboard has gone out. If it didn't, you will need to repeat the process for the third time. Keep in mind that this method can only work with GM vehicles, and it's still not 100% secure. If you're looking for a safer and reliable option, you should consult a professional locksmith or the dealer to have your car programmed with chip. These professionals have the tools and equipment needed to connect to the diagnostic port on your car and perform the necessary changes. Keyless Entry Systems Keyless entry systems give property access without requiring an actual credential. Security is achieved through a combination between sensors and an onboard computing device. It is possible to control and monitor the system from anywhere in the property. Keys and locks are not required. The system is also able to detect and deactivate lost or stolen cards. The latest models also support remote management and configuration as well as are cloud-based. Most modern cars are equipped with a keyless entry system. The system works by sending radio signals that are picked up using a special keyfob. The signals are then compared to the code that is stored in the computer of the car, and if all is well, the car will unlock. If the signals don't match, the car will not start. There are several steps you can follow to program your new key fob, if it's not already programmed. The first step is to ensure that all doors are locked, except for the driver's side. Also, you'll need the original key fob as well as any extras you'd like to program. You may also visit your local auto parts store to determine if they carry the appropriate tool for your vehicle. If these steps do not work, you'll need check the owner's manual, or a professional locksmith. Once you've got the proper tool, you can follow the manufacturer's instructions to begin programming your key fob. This process is often relatively quick and easy. You might be told to insert the new key in the ignition while all doors are closed, and then press the button on the keyfob within a specific time. The car may respond by reversing the doors or emitting an audible sound as a sign that the key has been successfully programmed. Many locksmiths employ special tools to get around the EEPROM security features that are built into your car's remote or key fob. However it's an extremely risky option and could lead to the possibility of destroying the data on your car's computer. This should be left to a professional, who can lower the chance of data corrupting and ensure that your keys are correctly programmed. Transponder Keys Transponder keys are also referred as chip key. They have an embedded microchip in the head of keys. reprogram car key transmits electromagnetic energy to the transponder when the key is put into the ignition lock barrel. This energy is absorbed into the chip and sends back the radio frequency signal, which includes an identification code that is matched with the unique serial number that is stored in the car's computer system. This stops unauthorized attempts to begin the car as only the proper keys will be able to do so. This technology is thought to be more secure than a conventional car key since it makes it harder for a criminal to “hot wire” the vehicle and start it. It's not foolproof and thieves have found ways of tricking and defeating the system. So even cars with transponder key are not safe from theft. You might be able to program a transponder key by yourself when you have a key programmer compatible with your car. The key programmer should include a step-by-step guide that will guide you through the procedure of programming your key. Follow the directions and turn on the security light on your dashboard prior to starting your engine. You can ask an expert locksmith to assist you if you are not sure about using a key programmer or if you have a car with more advanced features, such as remote head keys or intelligent keys. They'll have the appropriate tools and equipment to cut your blank key, erase your previous 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 safety system operating exactly as it should. Plus, it is much safer than making it yourself. Making use of the wrong key programmers or following unofficial instructions could alter the information stored in the car's system, and result in the new key not working. Remotes You may have to reprogramme your car keys if they're not working. It's an easy process for most modern cars that have key fobs. However, certain models are more complex and require programming with the aid of an additional device that's typically available from the auto locksmith or dealer. Fortunately, most modern car manufacturers have improved their key systems to be more secure in order to prevent theft of vehicles. The key system is designed in a way to avoid hot-wiring which is the act of using a key from an other vehicle to start the engine of your car. To make this process work, you will need at least two key fobs functioning for your vehicle. It's important to have two spare keys available. The key fobs have electronic chips in them which 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 remain dead or refuse to start. Fortunately, the majority of electronic keys can be replaced and programmed by a professional locksmith or an auto dealer with the right equipment. If you can locate a cheap car key programmer on the internet or in an auto parts store, the procedure will be relatively simple. You'll need to follow a specific set of steps that include inserting the key into the ignition, turning it on, but not running the engine, and then turning the key off. You'll need to repeat this process a certain number of times within a specified time period to allow your vehicle to enter programming mode. This will be indicated by the door locks turning or a chime that sounds audible. Some modern vehicles are capable of programming using a device connected to the onboard diagnosis port or EEPROM programming. The majority of these tools are expensive and therefore are not accessible to the majority of car owners. Many experts in the field recommend consulting with a reputable auto dealership or locksmiths to program your keys.