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How to Program a Car Key Modern cars come with more than a key to start the engine, they also include a remote to lock and unlock doors. Key fobs need to be programmed in order to work. It is possible to pre-program some car keys by the owner, however it is recommended to speak with a professional. This will prevent any damage to the computer system of the vehicle and ensure that the key works properly. How to program the key The majority of cars had basic keys systems prior to the turn of the 21st century. program a car key were metal and had grooves that matched the internal components 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, also known as transponder keys or chips keys are designed to make it more difficult for thieves to start the vehicle. The key chips in the keys have a unique serial number that sends an electronic signal to the receiver inside of your car. The signal is then compared to an identifier in the computer of the car when it is received. If the codes are identical, your car will begin to start. If the codes aren't compatible, your car won't even start. This is one of the main reasons to keep a spare key on your vehicle, particularly in the case of transponder-based systems. You'll require special equipment to be able to program keys. You'll also require a blank key for your specific make and model. They can be purchased from an auto dealership or from a locksmith but you must make sure that they are the right ones. If you try to use a key from another model, then it won't work. Start the process by inserting the new key into the ignition and turning it to “on”. 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 off the key and see if the security light on your dashboard went out. If it didn't then you'll need to do it again for another time. Be aware that this method can only work on GM vehicles, and it's still not 100% secure. If you want a more secure and reliable option then you should visit a locksmith or dealer to have the vehicle programmed with an embedded chip. They have the tools and equipment needed to access the onboard diagnostics port in your car and make the change. Keyless Entry Systems Keyless entry systems allow property access without requiring a physical credential. They use sensors in combination with an onboard computer to offer security. It is possible to monitor and control the system from anywhere in the property. Keys and locks are not required. The system can also identify and disable stolen or lost cards. Additionally, the most recent models are cloud-based and permit remote management and configuration. Most modern cars are equipped with an entry system that is keyless. To enable this feature it emits radio signals that are picked up by a particular key fob. The signals are then compared to the code that is stored in the computer of the car and if everything is well, the car will unlock. If the signals don't match, the car will not start. If your key fob has not been already programmed, you can follow several steps to program it. First, you'll need to 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 extras that you want to program. You may also visit your local auto parts store 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 proper tool Once you have the correct tool, you can begin process of reprogramming your key fob following the manufacturer's instructions. This procedure is usually quick and easy. For example, you might be asked to insert your new key into the ignition while keeping all doors closed and then press a button on the key fob within a brief time. The car might then respond by cycling the door locks or generating a chime to indicate that the key was successfully programmed. Many locksmiths have special tools that let them bypass the built-in EEPROM security on the key fob of your car or remote. However it's an extremely risky procedure and comes with the possibility of destroying the data on the computer in your car. It is recommended to have a professional handle this as they'll be able to reduce the risk of data corruption and make sure your keys are properly programmed. Transponder Keys Transponder keys are also referred to as chip key. They are equipped with embedded microchips in the head of keys. The antenna ring transmits electromagnetic energy to the transponder when the key is placed in the barrel of the ignition lock. The chip absorbs this energy and then transmits a radio frequency signal that contains an identification code. This code matches the unique serial numbers that are stored in the computer system of the car. This prevents unauthorised attempts to start the car, as only the correct key can start the car. This technology is believed to be more secure than traditional car keys because it makes it harder for a thief to “hot wire” a vehicle and get it started. But it's not foolproof, and thieves have discovered ways to trick and defeat the system – which means that even cars equipped with transponder keys are not immune from theft. You may be able program a transponder key yourself with a key programmer compatible with your vehicle. The key programmer should include a step-by-step guide that will walk you through the procedure of programming your key. Follow the instructions and turn on the security lights on your dashboard before you start your engine. If you're not comfortable with using a key programmer, or if your car includes more advanced features such as remote head keys or smart keys, you may turn to a professional locksmith assistance. They will have the tools and equipment required to cut blank keys, erase the old key from the computer of the car, and 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. Additionally, it's much safer than doing it yourself. If you use a incorrect key programming software or follow unofficial guides or instructions, the information stored in your car's system can be damaged and the new key won't work. Remotes You may have to reprogramme your car keys if they don't work. This is a straightforward procedure for most modern cars that utilize key fobs. Certain models are more complicated and require a special programming device, which is normally 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 was designed to stop hot-wiring (the practice of using a key from another vehicle to start the engine) and other similar methods. To be able to make this process work you'll need at least two key fobs working for your vehicle. It is essential to have at minimum two spare keys on hand. Key fobs are equipped with electronic chips that communicate using radio signals with the car's receiver. The computer checks the code of the key with the database. If the codes are the same, the car will start. If the codes do not match, the car will not start or will remain dead. Luckily, most of these electronic keys can be programmed and replaced by an experienced locksmith or auto dealer using the appropriate equipment. The process should be relatively easy if you locate a key programmer that is cheap on the internet or at an auto parts store. You'll have to follow a set-up that include inserting the ignition key and turning it on, without starting the vehicle, and then switching off the key. You'll need to repeat this procedure a specific number of times within a specific time frame for your vehicle to enter programming mode. The door locks will be triggered or a chime will sound. Certain cars of the present can only be programmed with the help of a device that is connected to the diagnostics port on the car's motherboard or an EEPROM programming procedure. Unfortunately, most of these tools are incredibly expensive, and therefore unattainable for most car owners. Many experts in the field recommend consulting a reputable auto dealership or locksmith to program your keys.