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How to Program a Car Key Modern cars use more than a key to start the engine, they also have a remote that can lock and unlock doors. These key fobs must be programmed in order to function. It is possible to program certain keys for cars by the owner, but it is best to consult an expert. This will help to prevent any possible damage to the car's computer system, and also ensure that the new key works properly. How to Program a Key Most cars had basic key systems up until the turn of 21st century. Keys themselves were metal and featured grooves that were connected to the internal parts of the ignition cylinder. However, as time progressed and technology improved, more and more automobile manufacturers began blending physical and electronic protocols to prevent theft. These key systems are also referred to as transponder keys or chips keys, are designed to make it harder for thieves to open an automobile. The key chips that are in the keys have a specific serial number that transmits an electronic signal to the receiver inside of your car. When the signal is received, it compares it to an existing code in the car's computer. If the codes are identical then your car will begin to start. If the codes aren't compatible, your car won't even start. This is why it is important to keep an extra car key especially if your system is based on transponders. If you want to learn how to program keys, you'll require some special equipment. You'll need an uncut key that matches the car's model and make. They can be bought at an auto dealership or from a locksmith but you must make sure they're the right ones. If you attempt to use a key from another brand, it will not work. To begin the process, simply insert the new key into the ignition and switch it to the “on” position. You'll need to leave the key in this position for about 10 minutes and 30 seconds. When the time has passed you can take off the key and see whether the security indicator on your dashboard was gone. If it didn't then you'll need to repeat the process for the third time. This method is only compatible with GM vehicles and isn't foolproof. If you're seeking a more secure and reliable option, you should seek out an expert locksmith or dealer to have your car programmed with chips. These professionals have the necessary tools and equipment to connect to the onboard diagnostic port of your car and make the switch. Keyless Entry Systems Keyless entry systems give access to your property without the need for the use of a physical ID. They make use of a combination of sensors and an onboard computer for security. This lets you manage the system and monitor activities from any location on the property, and eliminates the need for locks or keys. The system can also identify lost or stolen cards and then deactivate them. The most recent models also permit remote management and configuration and are cloud-based. Most modern cars come equipped with a keyless entry system. To accomplish this it emits radio signals that are picked up by a particular key fob. The signals are compared with the code that is stored in the computer of the car and, if all is in order, the car will unlock. The car will not start if the signals are not the same. If your key fob has not been already programmed, it is possible to follow several steps to program it. First, you'll need to make sure that all doors, except the driver's door are locked. Also, you'll need the original key fob, along with any additional keys you want to program. You can also try your local auto parts store because they might have the appropriate programming tool for 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 right tool, you can begin the process of reprogramming your key fob following the instructions of the manufacturer. This procedure is usually quick and simple. It is possible to be instructed to insert the new key in the ignition when all doors are shut, and then press the button on the keyfob after a specific time. The car might then respond by adjusting 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 of the car's key fob or remote. 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 ensure that your keys are programmed correctly. Transponder Keys Transponder keys are also referred to as chip key. They feature a microchip embedded in the head of keys. When the key is inserted into the barrel of the ignition lock, and turned to the ON position the antenna ring transmits a burst of electromagnetic energy through the transponder chip. This energy is absorbed by the chip, which then transmits a radio frequency signal with an identification code that matches with the unique serial number that is stored in the car's computer system. This prevents unauthorised attempts to start the car as only the correct keys will be able. It is believed that this technology will be more secure than traditional car keys because it makes it harder for a thief to “hot wire” the vehicle and start it. It's not foolproof, and thieves have discovered ways of tricking and defeating the system. So even cars equipped with 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 key yourself using a key programmer that's compatible with your specific car. The key programmer will come with a manual that will take you step-by-step through the procedure. Follow the directions and turn on the security light in your dashboard prior to starting your engine. If you're not comfortable with the use of a key programmer or if your vehicle includes more advanced features such as remote head keys or smart keys, you can turn to a professional locksmith for help. They will have the tools and equipment necessary to cut a blank key, delete the old one from the computer in the car, and program the new key to work correctly. This will save you time and money, and will keep your car's security system functioning just as it should. Additionally, it's much safer than making it yourself. If you use the wrong key programmer or follow unofficial instructions and the data in your car's computer could be damaged and the new key won't work. Remotes It is possible to change the programming of your car keys if they're not working. It's a simple procedure for most modern vehicles which use keyfobs. Some models are more intricate and require a specific programming device, which is normally available from the dealer or through auto locksmiths. To decrease the risk of theft from vehicles Modern car makers have enhanced the security of their key systems. The key system is designed to prevent hot-wiring, which is the practice of using a key from a different vehicle to start the engine of your car. To be able to make this process work, you will require at least two key fobs working for your vehicle. This is just one of the reasons why it's a good idea to always have at least one spare key on hand. The key fobs have electronic chips that communicate with the car's radio via radio signals. The car's computer then compares this key's code to the one in its database. If reprogram car key match, the car will start. If not, the car will remain dead or refuse to start. Luckily, most of these electronic keys can be programmed and replaced by a professional locksmith or an auto dealer with the right equipment. If you can locate a low-cost car key programer online or at an auto parts store, the procedure will be relatively simple. You'll have to follow a set of steps that include inserting the ignition key and turning it on without starting the vehicle, and then shutting off the key. You'll have repeat the steps a certain number of times within the timeframe you specify to put your vehicle into programming mode. This will be indicated by the door locks cycling or an audible chime. Certain modern vehicles can only be programmed with the aid of a tool that's connected to the diagnostics port on the car's motherboard or an EEPROM programing procedure. Unfortunately, the majority of these tools are incredibly expensive, and therefore unattainable for the majority of car owners. As such, most car experts recommend to consult an expert auto dealer or locksmith to program your keys.