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How to Program a Car Key Modern cars have more than just a key that can start the engine. They also come with a remote control which can be used to lock or open doors. Key fobs must be programmed in order to function properly. Some car keys can be programmed by the owner, however it's best to consult with a professional. This will prevent any damage to the computer system of the vehicle and ensure that the key functions correctly. How to program a Key The majority of cars had basic keys systems prior to the turn of the 21st century. Keys were made from metal and had grooves to match the internal components of the ignition cylinder. As technology advanced, more and more automobile makers began to mix electronic and physical protocols to stop theft. These key systems, also known as transponder keys or chips keys are designed to make it difficult for thieves to steal an automobile. The key chips that are in the keys have a specific serial number that sends an electronic signal to the receiver inside of your car. The signal is compared to a code in the car's computer when it is received. If the codes are similar the car will begin to begin. If car key programming don't match, then your vehicle won't start at all. This is the reason you should keep a spare car key, particularly if your system is based on transponders. You'll need special equipment to be able to program keys. You'll need to buy a blank key that matches your car model and make. They can be bought at the dealership or through a locksmith however, you must be sure they're the right ones. If you use a key from another model, it won't work. To begin the process, simply insert the new key into the ignition and turn it to the “on” position. It is necessary to leave the new key in this position for around 10 minutes and 30 second. When the time has passed you can take off the key and observe if the security light on your dashboard was gone. If it didn't you'll have to do it three times. This method is only compatible with GM vehicles, and isn't foolproof. If you want a more secure and reliable option go to an auto locksmith or dealer to get your car programmed with an embedded chip. They have the tools and equipment needed to access the onboard diagnostics port in your vehicle and make the necessary changes. Keyless Entry Systems Keyless entry systems provide property access without requiring a physical credential. Security is offered by sensors that are combined with an onboard computer. It is possible to monitor and control the system from anywhere within the property. Keys and locks are not required. The system can also identify stolen or lost cards and disable them. The latest models also support remote management and configuration as well as are cloud-based. The majority of modern cars are equipped with an entry system that is keyless. To accomplish this the car emits radio signals which are picked up by a specific key fob. These signals are then compared against the correct code stored in the car's system, and if everything is in order the car will be able to unlock. If the signals do not match then the car won't start. If your key fob is not already programmed, you can follow a series of steps to programme it. First, you'll need to make sure that all doors except the driver's door are locked. You'll also need the original key fob, along with any additional keys you'd like to program. You may also visit your local auto parts store to see if they've got the right tool for your vehicle. If these steps don't work, you'll have to consult the owner's manual or a professional locksmith. Once you have the correct tool, you can begin the changing the programming of your key fob following the manufacturer's instructions. This procedure is usually quick and easy. You may be instructed to put the new key in the ignition after closing all doors, and then press the button on the keyfob within a specific time. The car might then respond by cycling the door locks or generating a chime to indicate that the key has been successfully programmed. A lot of locksmiths have tools that let them bypass the built-in EEPROM security in your car's key fob or remote. However, this is an extremely risky option and has the potential of corrupting the data on the computer in your car. It is best to let an expert handle this task, as they will be able to reduce the chance of data corruption and ensure that your keys are programmed correctly. Transponder Keys Transponder keys, sometimes referred to as chip keys, are equipped with an embedded microchip in the head of the key. The antenna ring transmits electromagnetic energy to the transponder when the key is put into the ignition lock barrel. This energy is absorbed by the chip, which then transmits a radio frequency signal with an identification code that corresponds with the unique digital serial number in the car's computer system. This will prevent any an unauthorized attempt to start the car since only the right key can start the car. It is believed that this technology will be more secure than traditional keys for cars because it makes it difficult for thieves to “hot wire” a vehicle and start it. However, it's not foolproof and thieves have discovered ways to evade and defy the system – so that even cars with transponder keys aren't safe from theft. You might be able to program a transponder key yourself when you have an instrument that works with your car. The key programmer should come with an instruction manual that will walk you through the process of programming your key. Follow the steps and switch on the security light in your dashboard prior to beginning your engine. If you're not comfortable using a key programmer, or if your car comes with more advanced features, such as remote head keys or smart keys, you can go to a professional locksmith for assistance. They will have the tools and equipment necessary to cut an uncut key, erase the old key from the computer of the car, and program the new key to function correctly. This will save you money and time and ensure that your car's safety system functioning exactly as it should. Plus, it's a lot more secure than doing it yourself! If you use a wrong key programmer or follow a guide that is not official and the data in your car's system can be corrupted, and the new key will not work. Remotes It is possible to change the programming of your car keys if they don't work. This is a simple process for many modern vehicles that have key fobs. However, some models are more complex and need to be programmed with the aid of an instrument that is available from the dealer or auto locksmiths. Fortunately, the majority of modern automobile manufacturers have improved their key systems to be more secure in order to reduce vehicle thefts. The key system was designed in a way to prevent hot-wiring, which is the act of using a key from an other vehicle to start the engine of your vehicle. To make this process work you'll require at least two key fobs that are working for your vehicle. It's important to have two spare keys in your possession. Key fobs are equipped with electronic chips inside them that communicate with the car's receiver via radio signals. The computer examines the key's code with the database. If the codes match, the car will start. If not, the vehicle will not start or fail to start. Most electronic keys can be programmed and replaced by an experienced locksmith or auto dealer using the appropriate equipment. The process is fairly simple if you can locate a key programmer that is cheap on the internet or at an auto parts store. You'll need to follow a set of instructions that includes inserting the ignition key, turning it on, without starting the car, and then shutting off the key. You'll have to repeat this a certain number of times within a certain time period for your vehicle to enter programming mode. The door locks will turn on and off or chime. Some modern cars are only capable of being programmed using a tool that is connected to the onboard diagnosis port or EEPROM programming. Unfortunately, most of these tools are incredibly expensive, and therefore unattainable for the majority of car owners. Therefore, the majority of car experts recommend to consult an experienced locksmith or auto dealer for key programming services.