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How to Program a Car Key Modern cars have more than a key to start the engine. They also have a remote that can lock and unlock doors. Key fobs have to be programmed correctly. It is possible to program certain keys for cars by the owner, however it is recommended to speak with an expert. This will protect against any possible damage to the computer system and also ensure that the new key works correctly. How to program a Key Before the turn of the 21st century most cars used basic key systems. The keys were made of metal and incorporated grooves to correspond with the internal parts in the ignition cylinder. As time went on and technology improved and improved, car manufacturers began blending physical and electronic protocols to prevent theft. Key systems, also known as transponder keys or chips keys are designed to make it more difficult for thieves to open a vehicle. The key chips in the keys have a specific serial number that sends an electronic signal to the receiver inside your car. When the signal is received it compares it with the code that is stored 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 the reason you should keep an extra car key especially if your system is transponder-based. If you're interested in learning how to program keys, you'll need some special equipment. You'll also require a blank key that matches your specific make and model. These can be purchased at the dealership or through locksmiths, but you must make sure they're the right ones. If you use a key that is for another model, it will not work. To begin the process, simply insert the new key into the ignition and turn it to the “on” position. You'll need to keep the key in this position for about 10 minutes and 30 seconds. When the time has passed you can take out the key and observe if the security light on your dashboard went out. If it didn't go out then you'll need to repeat the process a third time. Be aware that this method can only work on GM vehicles, and it's still not foolproof. If programming car key looking for a safer and reliable solution, then you should seek out a professional locksmith or the dealer to have your car programmed with chip. These professionals have the necessary tools and equipment needed to access your car's onboard diagnostics port and then make the change. Keyless Entry Systems Keyless entry systems allow property access without the need for a physical credential. Security is achieved through the combination of sensors and an onboard computer. This lets you manage the system and monitor activities from any location on the property, and eliminates the requirement for locks or keys. The system can also identify stolen or lost cards and disable them. The newest models also allow remote management and configuration, and are cloud-based. Modern cars are equipped with keyless entry systems. The system works by emitting radio signals that are received by a special keyfob. The signals are then compared with the correct code in the car's computer, and if everything is in order the car will be able to unlock. The car will not start in the event that the signals are not the same. If your key fob isn't already programmed, you can follow a series of steps to program it. First, you'll need to make sure that all doors except the driver's door are locked. You'll also require the original key fob along with any additional keys you'd like to program. You could also check with your local auto parts store because they might have the right programming tool for your vehicle. If these steps don't work, you'll need go through the owner's manual or a professional locksmith. Once you have the proper tool Once you have the correct tool, you can begin process of reprogramming your key fob by following the instructions provided by the manufacturer. This procedure is usually quick and easy. For instance, you could be asked to insert your new key into the ignition while keeping the doors shut, and then press a button on the key fob within a very short time period. The car might respond by cycling doors or emitting an audible sound as an indication that the key has been successfully programmed. Many locksmiths use special tools to bypass the EEPROM security built into the remote of your car or key fob. However this is an extremely risky procedure and could lead to the possibility of corrupting the data on your car's computer. It is best to let a professional handle this, as they will be able to lower the risk of data corruption and make sure that your keys are correctly programmed. Transponder Keys Transponder keys are also referred as chip keys. They feature a microchip embedded in the head of the keys. The antenna ring transmits electromagnetic energy to the transponder when the key is inserted into the ignition lock barrel. This energy is absorbed into the chip and sends back an audio frequency signal that contains an identification code that matches with the unique digital serial number that is stored in the car's computer system. This is to prevent unauthorised attempts to start the car, as only right keys can be used. This type of technology is thought to be more secure than a conventional car key, as it makes it more difficult for thieves to “hot wire” the vehicle to start it. It's not foolproof, and thieves have found ways of tricking and defeating the system. So even cars equipped with transponder key are not safe from theft. You could be able to program a transponder key on your own if you have a key programmer compatible with your car. The key programmer comes with a guide that walks you step-bystep through the process. Once you have the key and a key programmer, follow the directions carefully and make sure the security light on your dashboard is ON before turning your engine ON. You can seek out an expert locksmith to assist you if you're not confident with a key programmer or if you own a car that has more advanced features, like remote head keys or intelligent keys. They will have the tools and equipment required to cut blank keys, erase the old key from the computer of the car, and then program the new key to work correctly. This will save you time and money and will ensure that your car's security system working just as it should. It's also a lot safer than attempting to do it yourself! If you use a wrong key programmer or follow unofficial guides or instructions, the information stored in your car's system can be damaged and the new key won't function. Remotes If your car keys don't work it could be necessary to reprogram them. This is an easy procedure for most modern cars that utilize key fobs. However, certain models are more complex and must be programmed with the help of a special device that's usually available from the dealer or auto locksmith. Fortunately, the majority of modern automobile manufacturers have made their key systems more secure in order to decrease the risk of theft from vehicles. The key system is designed to prevent hot-wiring, which is using a key from a different vehicle to start your car's engine. To ensure that this method works, you will need at least two key fobs functioning for your vehicle. This is one of the main reasons why it's recommended to have at least one spare key on hand. The key fobs contain electronic chips that communicate via radio signals with the car's receiver. The car's computer then compares this key's code to the one stored in its database. If the codes are the same the car will begin. If not, the car will remain dead or refuse to start. Most electronic keys can be programmed and replaced by an expert locksmith or dealer in the field with the appropriate equipment. The procedure should be fairly simple if you can locate a key programmer that is cheap on the internet or in an auto parts store. You'll have to follow a particular sequence of steps that includes inserting the key into the ignition, turning it on, but not running the engine, and then turning off the key. You'll have to repeat the steps a specified number of times over an exact time period to get your vehicle into programming mode. The door locks will turn on and off or chime. Certain cars of the present can only be programmed with the aid of a tool connected to the onboard diagnostics port or an EEPROM programming procedure. The majority of these tools are very expensive and therefore unaffordable by most car owners. As such, most experts in the field recommend that you consult with a professional auto dealer or locksmith to program your keys.