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How to Program a Car Key Modern cars have more than a key to start the engine, they also come with a remote that can lock and unlock doors. Key fobs have to be programmed in order to function properly. Some keys for cars can be programmed by the owner himself, but it is recommended to consult a professional. This will prevent any damage to the computer system of the car and ensure that the key is working properly. How to program the key Before the turn of the 21st century the majority of cars utilized basic key systems. Keys were made from metal and incorporated grooves to correspond to the internal parts in the ignition cylinder. As technology advanced, more and more automobile makers began to mix physical and electronic protocols to stop theft. Key systems like these, also known as transponder keys or chips keys, are designed to make it harder for thieves to steal a vehicle. The key chips have an unique serial number that sends a message to the receiver in your car. The signal is compared with a code in the car's computer when it is received. If the codes are compatible, then the car will start. If not, it will not start at all. This is the reason you should keep an extra car key, especially if your system is transponder-based. You'll need special equipment to learn to program keys. You'll need an uncut key that matches your car model and make. They can be bought at an auto dealership or from a locksmith but you must make sure they're the correct ones. If you try to use a key from an alternative model, it won't work. To begin the process, 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 around 10 minutes and 30 seconds. After the time is up you can take off your key and check if the security indicator on your dashboard has gone off. If it didn't, you will need to do it for the third time. This method is only compatible with GM vehicles, and isn't completely secure. If you're seeking a more secure and reliable solution, then you should seek out a professional locksmith or dealer to get your vehicle programmed with chip. They have the tools and equipment needed to access your car's onboard diagnostics port and then make the change. Keyless Entry Systems Keyless entry systems allow access to properties without the need for a physical ID. They make use of a combination of sensors and an onboard computer to offer security. This allows you to control the system and monitor activity from any place on your property, and it does away with the need for locks or keys. The system is also able to detect lost or stolen cards and deactivate them. In addition, the latest models are cloud-based and allow for remote management and configuration. Modern cars come with keyless entry systems. The system works by emitting radio signals which are received by an specialized keyfob. These signals are then compared with the correct code stored in the car's computer, and if everything is in order the car will start to unlock. If the signals do not match and the car does not start. If your key fob is not already programmed, you can follow a few steps to program it. First, you'll need to ensure all the doors are locked except for the driver's side. You'll also need the original key fob, along with any additional keys you want to program. You can also visit your local auto parts store to see if they have the right 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 proper tool, you can begin the process of reprogramming your key fob following the instructions provided by the manufacturer. The process is usually quick and easy. For example, you might be directed to insert your new key into the ignition with all doors closed and then press the button on the key fob within a brief time frame. The car may respond by cycling doors or emitting an audible sound as a sign that the key has been successfully programmed. Many locksmiths use special tools to get around the EEPROM security features that are built into your car's remote or key fob. But, this is a risky method and comes with the possibility of destroying the data on the computer in your car. This is best left to a professional, who can lower the chance of data corruption and ensure that your keys are programmed correctly. Transponder Keys Transponder keys are also known as chip keys. They feature embedded microchips in the head of the keys. When the key is placed in the barrel of the ignition lock, and turned to ON the antenna ring transmits a burst of electromagnetic energy through the transponder chip. The chip absorbs this energy, and then transmits a radio frequency signal that includes an identification code. This code matches the unique serial numbers of the computer system of the car. This prevents an unauthorized attempt to start the car, since only the right key can do so. This technology is believed to be more secure than traditional car keys because it makes it harder for a thief to “hot wire” an automobile and get it started. But it's not foolproof and thieves have discovered ways to evade and thwart the system so that even cars that have transponder keys aren't safe from theft. Depending on the make and model of your vehicle You may be able to program a new transponder by yourself using a key programmer that's compatible with your specific car. The key programmer will come with a manual that will guide you step-by-step through the procedure. 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. You can contact an expert locksmith to assist you if you're not sure about using a key programmer or if you own a car that has more advanced features, like remote head keys or intelligent keys. They'll have the right tools and equipment to cut your blank key, delete your old one from the car's computer and then program the new one so that it works properly. This will save you money and time and will keep your car's safety system working just as it should. It is also safer than doing it yourself. Using the wrong key programmers or following unofficial instructions could corrupt the information in the car's system, resulting in your new key not working. Remotes You may have to reprogramme your car keys if they aren't working. This is an easy procedure for most modern cars that utilize key fobs. However, certain models are more complex and need to be programmed using an additional device that's typically available from a dealer or auto locksmiths. Fortunately, most modern car manufacturers have made their key systems more secure in order to prevent theft of vehicles. The key system was designed in a way to avoid hot-wiring which is the act of using a key from another vehicle to start the engine of your vehicle. To ensure that this method works you'll require at least two key fobs working for your vehicle. This is just one of the reasons why it's best to have at least one spare key available. The key fobs have electronic chips that communicate via radio signals with the car's receiver. reprogram car key 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 will remain dead. Most electronic keys can be programmed and replaced by an expert locksmith or auto dealer using the proper equipment. The procedure should be fairly easy if you find a low-cost key programmer on the internet or at an auto parts store. You'll have to follow a set of instructions that includes inserting the ignition key and turning it on, without starting the vehicle, then shutting off the key. You'll need to repeat this procedure a specific number of times within a certain time frame for your vehicle to enter programming mode. The door locks will cycle or chime. Some modern cars can only be programmed with the help of a device that is connected to the onboard diagnostics port, or an EEPROM programming process. Unfortunately, the majority of these tools are incredibly expensive, making them unaffordable for most car owners. So, many experts in the field recommend that you speak with an expert locksmith or auto dealer to program your keys.