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How to Program a Car Key Modern cars have more than just a key that will start the engine. They also have a remote control that can lock or open doors. These key fobs have to be programmed in order to work. It is possible to program certain car keys by the owner, but it is recommended to speak with an expert. This will help to prevent any possible damage to the computer system and also ensure that the new key is working correctly. How do you program a key? Most cars had basic key systems until the turn of the 21st century. Keys themselves were metal and had grooves that corresponded to the internal components of the ignition cylinder. As time passed and technology advanced, more and more automobile manufacturers began blending electronic and physical protocols to protect against theft. These key systems are known as transponder keys or chip keys and they're designed to make it more difficult for thieves to open the vehicle. The key chips inside the keys have a unique serial number that sends an electronic signal to the receiver inside of your car. The signal is compared to the computer of the car when it is received. If the codes match, then the car will start. If not, it won't start at all. This is the reason you should keep an extra car key, particularly if your system is transponder-based. You'll require special equipment to learn how to program keys. You'll need a blank key that matches the car's model and make. They can be purchased from an auto dealership or from a locksmith but you must make sure they're the correct ones. If you attempt to use a key from another model, then it will not work. Begin by putting the new key in the ignition and turning it “on”. It is necessary to leave the new key in this position for approximately 10 minutes and 30 seconds. When the time has passed you can take out the key and see whether the security indicator on your dashboard went out. If it didn't, you'll need to do it again for the third time. This method is only compatible with GM vehicles, and isn't 100% secure. If you're looking for a more secure and reliable option then you should visit a locksmith or a dealer to have the vehicle programmed with an embedded chip. These professionals are equipped with the tools and equipment needed to connect to the diagnostic port on your car and make the switch. Keyless Entry Systems Keyless entry systems permit access to property without the need for a physical ID. They use a combination of sensors and an onboard computer to offer security. It is possible to control and monitor the system from anywhere within the property. Keys and locks are not required. The system can also identify and disable stolen or lost cards. In addition, the newest models are cloud-based and allow for remote management and configuration. Modern automobiles are equipped with keyless entry systems. This system works by emitting radio signals which are detected by a special keyfob. These signals are then compared to the correct code stored in the car's computer, and if everything is in order, the car will unlock. If the signals do not match, the car will not start. There are a variety of ways to program your new key fob, if it's not already programmed. First, you'll need to ensure that all doors are locked, with the exception of the driver's side. You'll also require the original key fob, as well as any extras you'd like to program. You may also visit the local auto parts store to see if they've got the right tool for your vehicle. If these steps don't work, you will have to consult your owner's manual, or an expert locksmith. Once you have the correct tool, you can follow the manufacturer's instructions to begin reprogramming your key fob. This procedure is usually quick and simple. You may be instructed to put the new key into the ignition when all doors are shut and then press the button on the keyfob within a specific time. The car might then respond by cycling the door locks or emitting a chime to signal that the key has been successfully programmed. A lot of locksmiths utilize special tools to bypass the EEPROM security features that are built into your car's remote or key fob. However this is an extremely risky option and comes with 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 corruption and ensure that your keys are properly programmed. Transponder Keys Transponder keys are also known as chip key. They feature embedded microchips in the head of keys. When the key is placed in the barrel of the ignition lock and then turned to ON, the antenna ring sends a burst of electromagnetic energy through the transponder chip. The energy is absorbed by the chip, which then transmits an audio frequency signal that contains an identification code that matches up to the unique serial number in the car's computer system. This is to prevent 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 traditional car keys because it makes it much difficult for thieves to “hot wire” the vehicle and get it started. However, it's not foolproof and thieves have found ways to deceive and thwart the system so that even cars with transponder keys are not safe from theft. You may be able program a transponder key yourself when you have a key programmer compatible with your car. The key programmer comes with a manual that will guide you step-by-step through the procedure. Once you have your 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 uncomfortable programming keys or if your vehicle includes more advanced features such as remote head keys or smart keys, you can go to a professional locksmith for assistance. They'll have the appropriate tools and equipment to cut the blank key, remove your old one from the computer in your car, and then program the new key to ensure that it will work correctly. This will save you time and money and will help keep your car's security system functioning exactly as it should. Plus, it is much safer than doing it yourself. Making automotive key programming of the wrong key programmers or following unofficial guides can alter the information stored in the car's system, resulting in the key not working. Remotes If your car keys don't work you may need to reprogram them. This is a straightforward procedure for a lot of modern vehicles that have key fobs. However, certain models are more complex and need to be programmed with the aid of an additional device that's typically available from the dealer or auto locksmiths. To decrease the risk of theft from vehicles, modern car manufacturers have increased the security of their key systems. The key system was designed in a way to stop hot-wiring, which is the practice of using a key from a different vehicle to start the engine of your car. As a result, you'll need at least two functioning key fobs for your vehicle in order to make the process work. It is essential to have at minimum two spare keys on hand. The key fobs contain electronic chips that communicate via radio signals with the car's receiver. The computer in the car then compares the key's code with the one in its database. If the codes are the same the car will begin. If the codes don't match then the car will not start or will remain dead. 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 are able to find a low-cost key programmer on the internet or in an auto parts store. You will need to follow a set of steps that include inserting the ignition keys, turning it on without starting the vehicle, then shutting off the key. You'll have to repeat this process a certain number of times within a specific time frame for your vehicle to enter programming mode. This will be indicated by the door locks cycling or a chime that sounds audible. 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 are not accessible to most car owners. As such, most auto experts suggest that you speak with an experienced auto dealer or locksmith for key programming services.