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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 which can be used to lock or open doors. Key fobs have to be programmed to work properly. Some keys for cars can be programmed by the owner, however it is recommended to consult a professional. This will prevent any possible damage to the computer system and ensure that the new key is working correctly. How to Program a Key The majority of cars had basic keys systems until the turn of the 21st century. The keys themselves were metal with grooves that matched the internal components of the ignition cylinder. As time went on and technology improved as it did, automobile manufacturers began blending physical and electronic 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 steal the vehicle. The key chips come with unique serial codes that transmits a message to the receiver in your car. When the signal is received, it compares it to a code stored in the car's computer. If the codes match the car will begin to start. If the codes aren't compatible, your car will not even start. This is one of the main reasons to keep a spare key in your vehicle, particularly when you use transponder-based systems. You'll need special equipment to be able to program keys. You'll need a blank key that is compatible with the model and make of your car. They can be purchased from the dealership or through locksmiths, but you must make sure they're the right ones. If you try to use a key that is from another brand, it won't work. To start the process, you need to insert the new key into the ignition and switch it to the “on” position. It is necessary to leave the new key in this position for approximately 10 minutes and 30 seconds. After the time has expired you can take off the key and check if the security light on your dashboard was gone. If it didn't then you'll have to repeat the process for another time. This method is only compatible with GM vehicles and isn't foolproof. If you want a more secure and reliable option go to an auto locksmith or dealer to have the car programmed with an embedded chip. These professionals are equipped with the tools and equipment needed to access the onboard diagnostic port on your car and perform the necessary changes. Keyless Entry Systems Keyless entry systems give access to your property without the need for a physical credential. Security is provided by sensors that are combined with an onboard computing device. This allows you to control the system and monitor activities from any location within the property, and eliminates the requirement for locks or keys. The system is also able to detect lost or stolen cards and disable them. The most recent models also permit remote management and configuration, and are cloud-based. Modern automobiles are equipped with keyless entry systems. To make this work it emits radio signals that are detected by a particular key fob. These signals are then compared to the correct code in the car's computer and if everything is in order, the car will unlock. If the signals do not match then the car won't start. If your key fob is not already programmed, you may follow a series of steps to program it. You'll first need to be sure that all doors excluding the driver's door are locked. car key programmer 'll need the original key fob and any extras that you want to program. You could also check with the local auto parts store for the appropriate programming tool for your car. If none of these methods work, you'll need to go through the owner's manual or an expert locksmith. Once you have the correct tool Once you have the correct tool, you can begin reprogramming of your key fob by following the manufacturer's instructions. This process is often relatively simple and quick. For instance, you could be directed to insert your new key into the ignition while keeping all doors shut and then press an appropriate button on the fob within a short time period. The car might respond by cycling doors or emitting an audible chime, which is an indication that the key has been successfully programmed. Many locksmiths have special tools that let them bypass the built-in EEPROM security of your car's key fob or remote. However it's an extremely risky procedure and comes with the possibility of corrupting the data on the computer in your car. It is recommended to have a professional handle this, as they will be able to minimize the chance of data corruption and also ensure that your keys are correctly programmed. Transponder Keys Transponder keys are also referred as chip keys. They have an embedded microchip in the head of the keys. The antenna ring transmits electromagnetic energy to the transponder when the key is placed into the ignition lock barrel. This energy is absorbed by the chip and it transmits the radio frequency signal, which includes an identification code that matches with the unique serial number of the car's computer system. This stops any attempts by anyone else to start the car as only the right keys can be used. This technology is believed to be more secure than conventional car keys because it makes it much harder for a thief to “hot wire” the vehicle and start it. But it's not foolproof and thieves have found ways to evade and thwart the system so that even cars that have transponder keys aren't safe from theft. You might be able to program a transponder key on your own if you have a key programmer compatible with your car. The key programmer comes with a user guide that walks you step-bystep through the process. Once you have the key and a key programmer, follow the directions carefully and make sure the security light on your dashboard is turned on prior to turning your engine on. If you're uncomfortable using a key programmer or if your car comes with more advanced features, such as remote head keys or smart keys, you can turn to a professional locksmith for assistance. They'll have the right tools and equipment to cut the blank key, remove your old one from the car's computer and then program the new key to ensure that it will work correctly. This will save your time and money, and will help keep your car's security system operating as it should. It's also a lot safer than attempting to do it yourself! If you choose the incorrect key programming software or follow unofficial instructions, the information in your car's computer could be corrupted, and the new key will not function. Remotes If your car keys don't work, you might need to reprogram them. This is a straightforward procedure for most modern cars that utilize key fobs. Some models are more complex and require a special programming device, which is usually available from the dealer or through auto locksmiths. To reduce vehicle thefts Modern car manufacturers have enhanced 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. This means that you'll need to have at least two working key fobs for your vehicle to ensure that the process works. It is essential to have at minimum two spare keys on hand. The keys have electronic chips which communicate with the car's receiver using radio signals. The car's computer then compares this code on the key to the one in its database. If the codes match the car will begin. If not, the car will remain dead or refuse to start. The majority of these electronic keys can be programmed and replaced by an expert locksmith or auto dealer with the proper equipment. If you can find a low-cost car key programer on the internet or at an auto parts store, the procedure should be fairly straightforward. You'll need to follow a set of instructions which include inserting the ignition key and turning it on, without starting the car, and then shutting off the key. You'll have to repeat this a certain number of times within a specific time period to allow your vehicle to enter programming mode. The door locks will cycle or chime. Certain modern vehicles are only capable of being programmed using a tool that is connected to the onboard diagnosis port or EEPROM programming. The majority of these tools are very expensive and therefore unaffordable by most car owners. As such, most auto experts suggest to consult a professional auto dealer or locksmith for key programing services.