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How to Program a Car Key Modern cars come with more than a key that starts the engine. They also come with a remote control that allows you to lock or open doors. Key fobs need to be programmed in order to work. It is possible to pre-program certain car keys by the owner, but it is advised to consult an expert. This will help to prevent any possible damage to the car's computer system and ensure that the new key is working properly. How do you program the key Most cars had basic key systems up until the turn of 21st century. The keys themselves were just metal and featured grooves that corresponded to the internal parts of the ignition cylinder. However, as time progressed and technology advanced as it did, automobile manufacturers began to combine electronic and physical protocols to prevent theft. These key systems are called transponder keys or chip keys, and are designed to make it more difficult for thieves to get into the vehicle. The key chips contain an unique serial number that sends a message to the receiver inside your car. When the signal is received, it compares it to the code that is stored in the car's computer. If the codes match, then your car will begin to start. If not, it won't start at all. This is one of the main reasons you should keep a spare key in your car, especially in the case of a transponder-based system. You'll require special equipment to be able to program keys. You'll need to buy a blank key that is compatible with the model and make of your car. You can purchase these at an auto locksmith or a locksmith dealership, but it's crucial to get the right ones. If you attempt to use a key that is from an alternative model, it will not work. Start the process by inserting the new key in the ignition and turning it to “on”. You will need to leave the new key in this position for about 10 minutes and 30 second. After the time has expired, you can remove the key and see if the security light on your dashboard was gone. If it didn't, you'll need to do it again for another time. Remember that this method can only work on GM vehicles but it's not completely secure. If you're looking for a secure and reliable solution then you should visit a locksmith or dealer to have the vehicle programmed with an embedded chip. They are equipped with the tools and equipment required to connect to the diagnostic port on your car and make the switch. Keyless Entry Systems Keyless entry systems give property access without requiring an actual credential. Security is provided by sensors that are combined with an onboard computer. This allows you to control the system and monitor its activity from any location on your property, and does away with the requirement for keys or locks. The system can also detect and disable stolen or lost cards. The latest models also support remote management and configuration as well as are cloud-based. Modern cars come with keyless entry systems. automotive key programming by sending radio signals which are detected by an specialized keyfob. The signals are compared to the code stored in the car's computer and if everything is in order the car will be able to unlock. The car won't start if the signals are not the same. If your key fob isn't already programmed, you may follow a few steps to programme it. You'll first need to be sure that all doors excluding the driver's door are locked. You'll need the original key fob and any extras that you want to program. You may also visit your local auto parts shop to see if they have the right tool for your vehicle. If none of these options work, you'll have to consult the owner's manual, or an expert locksmith. Once you have the correct tool, follow the instructions of the manufacturer to begin programming your key fob. This process is usually quick and simple. You may be instructed to insert the new key into the ignition after closing all doors, and then press the button on the keyfob within a specific time. The car may respond by reversing the door locks or emitting an audible chime, which is an indication that the key was successfully programmed. A lot of locksmiths utilize special tools to get around the EEPROM security that is built into your car's remote or key fob. This is a risky technique and could cause data corruption on your car's computer. This is best left to a professional who can minimize the risk of data corruption and make sure that your keys are correctly programmed. Transponder Keys Transponder keys are also known 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 barrel of the ignition lock. The chip absorbs the energy and then transmits a radiofrequency signal that includes an identification code. This code matches the unique digital serial numbers in the computer of the car. This prevents unauthorised attempts 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 more difficult for thieves to “hot wire” a vehicle and start it. However, it's not foolproof and thieves have discovered ways to trick and defy the system – so that even vehicles with transponder keys are not immune from theft. Based on the make and model of your car You may be capable of programming a new transponder key by yourself with a key programer that is compatible with the car you own. The key programmer will come with a user guide that will guide you step-by-step through the procedure. Once you have the key and a key programmer, follow the steps carefully and make sure the security light on your dashboard is on prior to turning your engine ON. If you're uncomfortable using a key programmer, or if your car has more advanced features like remote head keys or smart keys, you can go to a professional locksmith assistance. They'll have the appropriate tools and equipment to cut your blank key, erase your old one from your computer in the car, and then program the new key so that it functions properly. This will save you time and money and will ensure that your car's security system working as it should. Additionally, it's much more secure than doing it yourself! Utilizing the wrong key programming software or following unofficial guidelines could corrupt the information in the vehicle's system and result in the new key not functioning. Remotes It is possible to change the programming of your car keys if they don't work. This is a simple procedure for a lot of modern cars that utilize key fobs. However, certain models are more complex and need to be programmed using a special device that's usually available from a dealer or auto locksmith. Fortunately, most modern car manufacturers have made their key systems more secure to prevent theft of vehicles. The key system is designed to prevent hot-wiring (the practice of using the key of another vehicle to start the engine) and other similar methods. To be able to make this process work you'll require at minimum two key fobs that are working for your vehicle. This is one of the reasons why it's best to have at least one spare key in your possession. The keys have electronic chips in them which communicate with the car's radio via 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 the codes don't match then the car will not start or will remain dead. Most of these electronic key can be programmed and replaced by an experienced locksmith or dealer in the field with the appropriate equipment. If you can find an inexpensive car key programmer online or at an auto parts store, the procedure is fairly simple. You'll have to follow a particular sequence of steps that includes inserting the key into the ignition and turning it on, without starting the engine, then turning off the key. You'll have repeat the steps a specified number of times over the timeframe you specify to put your vehicle in programming mode. The door locks will be triggered or a chime will sound. Some modern vehicles are programmable with a tool connected to the onboard diagnostic port or EEPROM programming. These tools are costly and therefore are not accessible to the majority of car owners. Many experts in the field recommend consulting with a professional auto dealership or locksmiths to program your keys.