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How to Program a Car Key Modern cars come with more than just a key that starts the engine. They also come with a remote control which can be used to lock or unlock doors. Key fobs need to be programmed to function. Some keys for cars can be preprogrammed by the owner, however it is best to speak with an expert. This will prevent any damage to the computer system of the vehicle and ensure that the key works correctly. How do you program a key Before the turn of the 21st century, the majority of cars utilized basic key systems. The keys themselves were just metal with grooves that corresponded to the internal parts of the ignition cylinder. As time went on and technology improved and improved, automobile manufacturers began blending physical and electronic protocols to stop theft. These key systems are also referred to as transponder keys or chips keys are designed to make it more difficult for thieves to steal an automobile. The key chips come with a unique serial code that sends a message to the receiver in your car. When the signal is received it is compared to an existing code in the car's computer. If the codes are compatible, then your car will start. If the codes don't match, your car will not even start. This is one of the primary reasons why you should always keep a spare key on your car, especially when you use transponder-based systems. If you're interested in learning how to program keys, you'll require some special equipment. You'll also require a blank key that matches your specific model and make. You can purchase them from an auto locksmith or a locksmith dealership, but it's important to get the right ones. If you try to use a key that is from an alternative model, it will not work. To start the process, you need to insert the new key into the ignition and switch it to the “on” position. You'll need to keep the new key in this position for approximately 10 minutes and 30 seconds. When the time has passed you can take off the key and check whether the security light on your dashboard was gone. If it didn't you'll have to repeat the process a third time. Be aware that this method can only work with GM vehicles but it's not 100% secure. If you're looking for a safer and reliable solution, then you should seek out an expert locksmith or dealer to get your vehicle programmed with chips. These professionals are equipped with the tools and equipment required to connect to the onboard diagnostics port of your car and perform the change. Keyless Entry Systems Keyless entry systems permit property access without the need for a physical credential. Security is provided by a combination between sensors and an onboard computer. This lets you manage the system and monitor activity from any location within the property, and it removes the requirement for locks or keys. The system can also identify and deactivate lost or stolen cards. The latest models also support remote management and configuration, and are cloud-based. Modern cars come with keyless entry systems. To accomplish this the car emits radio signals which are picked up by a specific 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 unlock. The car won't start if the signals are not the same. There are a variety of steps you can follow to program your new key fob, if it isn't already programmed. First, you'll need ensure all the doors are locked, except for the driver's side. You'll need the original key fob as well as any additional devices you want to program. You could also check with the local auto parts store, as they may have the right programming tool for your car. If program keys for cars don't work, you'll need go through the owner's manual or a professional locksmith. Once you have the proper tool, you can begin the changing the programming of your key fob following the manufacturer's instructions. The process is usually fast and easy. For example, you might be asked to insert your new key into the ignition with the doors shut, and then press an appropriate button on the fob within a very short time period. The car could respond by cycling doors or emitting an audible chime as an indication that the key has been successfully programmed. Many locksmiths have special tools that permit them to bypass the built-in EEPROM security in the key fob of your car or remote. But it's an extremely risky option and comes with the possibility of corrupting the data on your car's computer. It is recommended to have an expert handle this task because they will be able to lower the chance of data corruption and also ensure that your keys are programmed correctly. Transponder Keys Transponder keys are also known 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. This energy is absorbed by the chip and sends back a radio frequency signal with an identification code that is matched up to the unique serial number that is stored in the car's computer system. This prevents unauthorized attempts to begin the car since only correct keys will be able. This type of technology is thought to be more secure than the traditional car key since it makes it harder for a thief “hot wire” the vehicle and then start it. It's not foolproof, and thieves have discovered ways of tricking and defeating the system. So even cars with transponder key are not immune to theft. You may be able program a transponder key on your own if you have an instrument that works with your vehicle. The key programmer will come with an instruction manual that will guide you through the process of programming your key. Follow the directions and turn on the security lights on your dashboard prior to starting your engine. If you're not comfortable the use of 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 will have the tools and equipment needed to cut blank keys, erase the old one from the computer of the car, and then program the new key for it to work correctly. This will save you money and time and will keep your car's safety system operating exactly as it should. Additionally, it's much safer than making it yourself. Utilizing the wrong key programming software or following unofficial instructions could alter the information stored in the vehicle's system and result in your new key not working. Remotes You may need to reprogram your car keys if they're not working. This is a straightforward procedure for a lot of modern vehicles that have key fobs. However, some models are more complex and must be programmed with the aid of an instrument that is available from a dealer or auto locksmiths. Fortunately, the majority of modern automobile manufacturers have improved their key systems to be more secure to prevent theft of vehicles. The key system was designed to avoid hot-wiring (the practice of using the key of another vehicle to start the engine) and other similar methods. Therefore, you'll need at minimum 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 contain electronic chips that communicate via radio signals to the car's receiver. The computer in the car then compares the code on the key to the one stored in its database. If the codes are the same the car will be able to start. If not, the vehicle will remain dead or refuse to start. Luckily, most of these electronic keys can be replaced and programmed by a professional locksmith or auto dealer equipped with the proper equipment. If you're able to find a low-cost car key programer on the internet or in an auto parts store, the procedure is fairly simple. You'll have to follow a set of steps which include inserting the ignition key, turning it on without actually starting the vehicle, then turning off the key. You will need to repeat the steps a specific number of times over a specified time frame to get your vehicle into programming mode. The door locks will cycle or a chime will sound. Some modern cars are only capable of being programmed using a tool that is connected to the onboard diagnosis port or EEPROM programming. Most of these tools are expensive and therefore unaffordable by the majority of car owners. Most car experts recommend consulting with a reputable auto dealership or locksmiths to program your keys.