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How to Program a Car Key Modern cars use more than a key to start the engine, they also come with a remote that can lock and unlock doors. These key fobs have to be programmed to function. It is possible to pre-program certain keys for cars by the owner, but it is advised to consult a professional. This will avoid any damage to the computer system of the car and ensure that the key functions correctly. How do you program a key The majority of cars had basic keys systems prior to the turn of the 21st century. The keys themselves were just metal and had grooves that matched the internal parts of the ignition cylinder. As technology advanced, more and more automobile manufacturers began to combine physical and electronic protocols to stop theft. These key systems, also known as transponder keys or chips keys are designed to make it harder for thieves to open a vehicle. The key chips inside the keys have a unique serial number that sends an electronic signal to the receiver in your car. When the signal is received it is compared to a code stored in the car's computer. If the codes are similar then your car will begin. If the codes don't match, your car will not even start. This is one of the main reasons why you should always keep a spare key in your vehicle, particularly if you have a transponder-based system. If you're looking to learn how to program keys, you'll require some special equipment. You'll need an uncut key that matches your car model and make. These can be purchased at an auto dealership or from locksmiths, but you must make sure that they are the correct ones. If you use a key from another model, it won't work. Start by inserting the new key in the ignition and turning it to “on”. It is necessary to leave the new key in this position for about 10 minutes and 30 second. When the time has passed you can take off the key and see whether the security light on your dashboard was gone. If not, you'll need to do it again for the third time. This method is only compatible with GM vehicles and it's not completely secure. If you're looking for a more secure and reliable option, you should visit a professional locksmith or the dealer to have your car programmed with chips. They have the tools and equipment to access your car's onboard diagnostics port and make the switch. Keyless Entry Systems Keyless entry systems permit property access without the need for an actual credential. They use sensors in combination with an onboard computer for security. It is possible to monitor and control the system from anywhere within the property. Keys and locks are not required. The system can also detect stolen or lost cards and disable them. In addition, the newest models are cloud-based and allow for remote management and configuration. Most modern cars are equipped with a keyless entry system. To accomplish reprogram car key emits radio signals which are picked up by a special key fob. The signals are then compared to the code that is stored in the car's computer and if everything is in order the car will be able to unlock. The car won't start in the event that the signals are not identical. There are several steps you can follow to program your new key fob, if it isn't already programmed. First, you'll need make sure that all doors are locked except for the driver's side. You'll need to have the original key fob along with any additional devices you want to program. You may also visit your local auto parts shop to see if they've got the right tool for your vehicle. If none of these options work, you'll need to consult your owner's manual or an expert locksmith. Once you have the correct tool, you can begin the process of reprogramming your key fob following the manufacturer's instructions. The process is usually quick and easy. For instance, you could be directed to insert your new key into the ignition with the doors shut, and then press the button on the key fob within a short time period. The car might then respond by cycling the door locks or generating a chime to indicate that the key has been successfully programmed. A lot of locksmiths utilize special tools to get around the EEPROM security features that are built into your car's remote or key fob. However it's a risky method and could lead to the possibility of destroying the data stored on your car's computer. This is best left to a professional who can minimize the risk of data corruption and ensure that your keys are properly programmed. Transponder Keys Transponder keys, sometimes referred to 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 turned into the ON position the antenna ring emits an energy burst through the transponder chip. This energy is absorbed by the chip and sends back a radio frequency signal with an identification code that corresponds with the unique serial number in the car's computer system. This helps prevent an unauthorized attempt to start the car, because only a valid key can perform the task. The technology is believed to be more secure than a conventional 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. Therefore, even vehicles with a transponder key are not immune to theft. You may be able program a transponder key by yourself with an instrument that works with your car. The key programmer will come with a guide that will guide you step-by-step through the process. Once you have the key and key programmer, follow the instructions carefully and ensure that the security light on your dashboard is turned ON before turning your engine ON. If you're not comfortable with programming keys or if your vehicle comes with more advanced features, such as remote head keys or smart keys, you may turn to a professional locksmith assistance. They'll have the appropriate tools and equipment to cut the blank key, remove your previous one from the computer in your car and then program the new one so that it will work correctly. This will help you save money and time and ensure that your car's safety system functioning as it should. Plus, it's a lot more secure than doing it yourself! If you use the incorrect key programming software or follow unofficial instructions, the information in your car's system can be damaged and the new key will not work. Remotes If your car keys don't work, you might need to reprogram them. It's a straightforward process for most modern cars that use keyfobs. Some models are more intricate and require a special programming device, which is usually available at the dealer or through auto locksmiths. Fortunately, most modern car manufacturers have made their key systems more secure in order to reduce vehicle thefts. The key system was designed to prevent hot-wiring (the practice of using the key of another vehicle to start the engine) and other similar methods. As a result, you'll require at least two functioning key fobs for your vehicle in order to make the process work. It's important to have at least two spare keys available. Key fobs are equipped with electronic chips inside them which communicate with the car's receiver via radio signals. The computer examines the key's code with the database. If the codes match, the car will start. If the codes don't match the car won't start or remain dead. Luckily, most of these electronic keys can be programmed and replaced by an expert locksmith or auto dealer using the appropriate equipment. The process is fairly simple if you can locate a key programmer that is cheap on the internet or at an auto parts store. You'll have to follow a set of instructions which include inserting the ignition keys, turning it on without starting the vehicle, and then turning off the key. You'll have to repeat this a certain number of times within a specified time frame for your vehicle to enter programming mode. This will be evident by the door locks chiming or a chime that sounds audible. Some modern vehicles are capable of being programmed using a tool that is connected to the onboard diagnosis port or EEPROM programming. The majority of these tools are expensive and therefore unaffordable by the majority of car owners. Most car experts recommend consulting with a professional auto dealership or locksmiths to program your keys.