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How to Program a Car Key Modern cars have more than just a key that starts the engine. They also have a remote control that allows you to lock or unlock doors. These key fobs have to be programmed in order to function. Certain keys for cars can be preprogrammed by the owner themselves but it is recommended to consult a professional. This will help to prevent any possible damage to the car's computer system, and also ensure that the new key functions correctly. How do you program a key? The majority of cars had basic key systems until the turn of 21st century. The keys themselves were just metal and had grooves that were connected to the internal parts of the ignition cylinder. As time went on and technology advanced as it did, automobile manufacturers began to combine physical and electronic protocols to protect against theft. Key systems, also known 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 that transmits a signal to the receiver in your car. When the signal is received it is compared to the code that is stored in the car's computer. If the codes match, your car will begin to start. If the codes don't match, then your vehicle won't start at all. This is one of the primary reasons why you should always keep a spare key in your vehicle, particularly if you have an electronic transponder. You'll require special equipment to learn to program keys. You'll need to buy a blank key that matches the car's model and make. These can be purchased at the dealership or through a locksmith but you must make sure they're the correct ones. If you use a key from another model, it will not work. 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 about 10 minutes and 30 seconds. Once the time is up you can take off the key and check if the security light on your dashboard went out. If it did not then you'll need to repeat the procedure for the third time. Keep in mind that this method will only work with GM vehicles however it isn't 100% secure. If you're looking for a safer and reliable option, you should consult a professional locksmith or dealer to get your vehicle programmed with a chip. reprogram car key have the necessary tools and equipment needed to access the diagnostic port on your car's motherboard and then make the change. Keyless Entry Systems Keyless entry systems permit property access without the requirement of an actual credential. They use sensors in combination with an onboard computer for security. It is possible to monitor and control the system from any place within the property. Keys and locks are not required. The system is also able to detect stolen or lost cards and then deactivate them. The most recent models also permit remote management and configuration, and are cloud-based. Most modern cars come equipped with an entry system that is keyless. To make this work the car emits radio signals which are picked up by a special key fob. These signals are then compared to the correct code that is stored in the car's computer, and when everything is in order the car will start to unlock. If the signals do not match and the car does not start. There are a variety of steps you can follow to program your new key fob, if it's not programmed yet. First, you'll need to make sure that all doors except the driver's door are locked. You'll also need the original key fob along with any additional keys 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 don't work, you'll have to consult the owner's manual or an expert locksmith. Once you have the correct tool, you can follow the manufacturer's instructions to begin programming your key fob. This process is usually quick and simple. 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 after the time frame. The car could respond by turning off the doors or emitting an audible chime as a sign that the key has been successfully programmed. Many locksmiths use special tools to bypass the EEPROM security built into your car's remote or key fob. But it's an extremely risky option and could lead to the possibility of destroying the data stored on the computer in your car. This is best left to a professional, who can reduce the risk of data corruption and ensure that your keys are programmed correctly. Transponder Keys Transponder keys are also referred as chip key. They feature embedded microchips inside the head of the keys. When the key is placed in the barrel of the ignition lock and turned to the ON position the antenna ring transmits an energy burst through the transponder chip. This energy is absorbed into the chip, which then transmits a radio frequency signal with an identification code that matches with the unique digital serial number in the car's computer system. This will prevent any unauthorized attempts to start the car as only the correct key will be able to perform the task. The technology is believed to be more secure than traditional car keys because it makes it much harder for a thief to “hot wire” the vehicle and get it started. But it's not foolproof, and thieves have found ways to evade and defeat the system – so that even vehicles that have transponder keys aren't safe from theft. You could be able to program a transponder key on your own with a key programmer compatible with your car. The key programmer comes with a manual that will guide you step-by-step through the process. Once you have your key and a key programmer, follow the directions carefully and ensure that the security light on your dashboard is ON before turning your engine ON. 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 can turn to a professional locksmith assistance. They'll have the appropriate tools and equipment to cut your blank key, delete your old one from the computer in your car and then program the new one so that it will work correctly. This will save you time and money and will keep your car's safety system functioning as it should. Additionally, it's much safer than doing it yourself. Using the wrong key programmers or following unofficial guidelines could cause a problem with the information stored in your car's system, and result in the key not working. Remotes If your car keys don't work it could be necessary to reprogram them. It's a straightforward process for most modern vehicles that use keyfobs. Certain models are more complicated and require a specific programming device, which is typically available at the dealer or through auto locksmiths. To reduce vehicle thefts, modern car manufacturers have increased the security of their key systems. The key system is designed to stop hot-wiring, which is using a key from another vehicle to start the engine of your car. This means that you'll need at least two working key fobs for your vehicle in order to ensure that the process works. It's important to have two spare keys in your possession. The key fobs have electronic chips that communicate using radio signals with the car's receiver. The car's computer then compares the code on the key to the one stored in its database. If the codes are the same the car will begin. If not, the vehicle will not start or fail to start. Luckily, most of these electronic keys can be replaced and programmed by an expert locksmith or auto dealer equipped with the proper equipment. The process should be relatively simple if you can find a low-cost key programmer on the internet or at an auto parts store. You'll have to follow a set of steps which include inserting the ignition keys, turning it on without actually starting the vehicle, then switching off the key. You will need repeat the steps a specified number of times within an exact time period to put your vehicle in programming mode. The door locks will turn on and off or chime. Certain modern vehicles 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 incredibly expensive, and therefore unattainable for the majority of car owners. Most car experts recommend consulting with an experienced auto dealer or locksmith to program your keys.