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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. These key fobs must be programmed in order to function. It is possible to program certain car keys by the owner, but it is best to consult an expert. This will avoid any damage to the computer system of the car and ensure that the key is working properly. How do you program a key? The majority of cars had basic keys systems until the turn of 21st century. Keys were made from metal and had grooves to correspond with the internal parts in the ignition cylinder. However, as time progressed and technology advanced and improved, automobile manufacturers began blending physical and electronic protocols to stop theft. Key systems are also referred to 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 specific serial number that transmits a signal to the receiver inside your car. The signal is then compared to the computer of the car when it is received. If the codes are compatible, then your car will begin to start. If not, it will not start at all. This is one of the primary reasons to keep a spare key on your vehicle, especially when you use an electronic transponder. If you want to learn how to program keys, you'll need certain equipment. You'll also require the blank key for your specific make and model. These can be purchased at a dealership or by a locksmith, but you must make sure they're the right ones. If you try to use a key from an alternative model, it will not work. Start by inserting the new key into the ignition and turning it to “on”. You'll need to keep the new key in this position for approximately 10 minutes and 30 second. After the time has expired you can take out the key and check whether the security light on your dashboard was gone. If it didn't then you'll need to repeat the procedure for the third time. This method is only compatible with GM vehicles and it's not foolproof. If you're looking for a safer and reliable option, you should visit a professional locksmith or dealer to get your vehicle programmed with chip. They will have the tools and equipment to access your car's onboard diagnostics port and then make the change. Keyless Entry Systems Keyless entry systems grant access to properties without the requirement for a physical ID. They make use of sensors in conjunction with an onboard computer for security. This allows you to control the system and monitor activity from any place within the property, and it eliminates the need for locks or keys. The system is also able to detect and block 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. To make this work, the vehicle emits radio signals that are detected by a particular key fob. The signals are compared with the code stored in the car's computer and, if all is in order, the car will unlock. If understanding don't match, the car will not start. There are a variety of steps you can take to program your new key fob, if it's not already programmed. First, you'll need to make sure that all doors excluding the driver's door are locked. You'll need to have the original key fob as well as any other devices you wish to program. You can also try your local auto parts store, as they may have the right tool to program your car. 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 Once you have the correct tool, you can begin reprogramming of your key fob by following the manufacturer's instructions. The process is usually fast and easy. You might be told to insert the new key into the ignition when all doors are shut and then press the button on the keyfob after a specific time. The car could then respond by cycling the door locks or emitting a chime to signal that the key has been successfully programmed. A lot of locksmiths have tools that let them bypass the built-in EEPROM security on your car's key fob or remote. This is a risky method and could cause data corruption on your car's computer. It is best to let a professional handle this as they'll be able to minimize the chance of data corruption and make sure that your keys are programmed correctly. Transponder Keys Transponder keys, sometimes referred to as chip keys, come with an embedded microchip in the head of the key. When the key is placed in the barrel of the ignition lock, and then turned to the ON position the antenna ring transmits an energy burst through the transponder chip. The chip absorbs this energy, and then transmits a radio frequency signal that includes an identification code. The code is matched to the unique serial numbers in the computer system of the car. This is to prevent any attempts by anyone else to start the car, as only right keys can be used. This type of technology is thought to be more secure than a traditional car key, as it makes it difficult for a thief “hot wire” the vehicle and start it. But it's not foolproof, and thieves have discovered ways to trick and defeat the system – so that even cars with transponder keys aren't protected from theft. You could be able to program a transponder key yourself when you have an appropriate key programmer for your car. The key programmer will come with a user guide that walks you step-bystep through the procedure. Once you have your key and a key programmer, follow the directions carefully and ensure the security light on your dashboard is turned ON prior to turning the engine on. You can contact a professional locksmith to help you if you're not sure about using a key programmer or if you own a vehicle with more advanced features, like remote head keys or intelligent keys. They will have the tools and equipment required to cut a blank key, delete the old one from the computer in the car, and program the new key to function properly. This will save you time and money and will help keep your car's security system functioning just as it should. Plus, it is much safer than making it yourself. If you use the incorrect key programming software or follow a guide that is not official or instructions, the information stored in your car's system can be damaged and the new key will not function. Remotes If your car keys aren't working, you might need to reprogram them. It's a simple procedure for most modern cars that have key fobs. Some models are more complex and require a special programming device, which is normally available from the dealer or through auto locksmiths. To decrease the risk of theft from vehicles Modern car manufacturers have increased the security of their key systems. The key system is designed to prevent hot-wiring (the method of using another vehicle's key to start the engine) and other similar methods. As a result, you'll require at minimum two working key fobs for your vehicle in order to ensure that the process works. It's important to have at least two spare keys in your possession. The key fobs have electronic chips which communicate with the car's receiver via radio signals. The computer checks the code of the key with the database. If the codes match the car will begin. If the codes do not match then the car will not start or remain dead. Most electronic keys can be programmed and replaced by a professional locksmith or dealer in the field with the proper equipment. If you're able to find a cheap car key programmer on the internet or in an auto parts store, the process will be relatively simple. You'll need to follow a sequence of steps that includes inserting the key into the ignition, turning it on, without activating the engine, then turning off the key. You'll have to repeat this a certain number of times within a specified time period to allow your vehicle to enter programming mode. The door locks will cycle or a chime will sound. Some modern vehicles are capable of programming using a device connected to the onboard diagnosis port or EEPROM programming. Unfortunately, most of these devices are very expensive, and therefore unattainable for the majority of car owners. The majority of car experts recommend consulting a reputable auto dealership or locksmiths to program your keys.