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How to Program a Car Key Modern cars have more than just a key which starts the engine. They also have a remote control that allows you to lock or open doors. These key fobs have to be programmed to work. Certain keys for cars can be preprogrammed by the owner, however it is best to speak with a professional. This will help to protect against any possible damage to the computer system, and also ensure that the new key is working correctly. How do you program a key The majority of cars had basic keys systems prior to the turn of 21st century. Keys themselves were metal with grooves that were connected to the internal parts of the ignition cylinder. As technology advanced, more and more automobile manufacturers began to combine electronic and physical protocols to avoid theft. Key systems like these, also known as transponder keys or chips keys are designed to make it more difficult for thieves to start the vehicle. The key chips come with unique serial codes that transmits a message to the receiver in your car. When the signal is received it is compared to an existing code in the car's computer. If the codes match, then your car will start. If the codes don't match, your vehicle won't start at all. This is why you should keep a spare car key, especially if your system is transponder-based. If you're interested in learning how to program keys, you'll need some specific equipment. You'll also need to purchase an uncut key for your specific model and make. They can be purchased from a dealership or by a locksmith, but you must make sure that they are the correct 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'll need to keep the new key in this position for around 10 minutes and 30 second. After the time has passed you can take off your key and check if the security indicator on your dashboard has gone off. If it didn't go out, you will need to repeat the procedure three times. Remember that this method will only work with GM vehicles but it's not completely secure. If you want a more secure and reliable solution go to a locksmith or dealer to have your vehicle programmed with an embedded chip. These professionals are equipped with the tools and equipment needed to connect to the onboard diagnostics port of your car and perform the necessary changes. Keyless Entry Systems Keyless entry systems give access to your property without the need for a physical credential. They use a combination of sensors and an onboard computer for security. This allows you to control the system and monitor activity from any place within the property, and removes the need 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 sending radio signals that are picked up using a special keyfob. The signals are then compared to the code that is stored in the car's computer and, if all is well the car will be able to unlock. The car won't start in the event that the signals are not identical. There are several steps you can follow to program your new key fob if it's not programmed yet. First, you'll need to ensure that all doors are locked except for the driver's side. Also, you'll need the original key fob, as well as any extras 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 car. If these steps don't work, you will need to consult your owner's manual or an expert locksmith. Once you've got the proper tool, you can follow the manufacturer's instructions to begin programming your key fob. This procedure 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 after the time frame. The car could respond by cycling doors or emitting an audible chime as a sign that the key was successfully programmed. Many locksmiths employ special tools to get around the EEPROM security that is built into your car's remote or key fob. This is a dangerous method and can corrupt the data stored in the car's computer. This is best left to a professional, who can reduce the risk of data corruption and make sure that your keys are programmed correctly. Transponder Keys Transponder keys are also referred as chip key. They are equipped with embedded microchips in the head of keys. The antenna ring transmits electromagnetic energy to the transponder whenever the key is put in the barrel of the ignition lock. The chip absorbs this energy and then transmits a radio frequency signal that includes an identification code. This code is in line with the unique serial numbers that are stored in the computer of the car. This prevents unauthorised attempts to start the car since only the right key can do so. This type of technology is thought to be more secure than a conventional car key, as it makes it harder for a criminal to “hot wire” the vehicle and start it. But it's not foolproof, and thieves have found ways to trick and defy the system – so that even cars with transponder keys aren't protected from theft. Depending on the brand and model of your car depending on the make and model of your car, you might be able to program a new transponder by yourself by using a key programming device that's compatible with the car you own. The key programmer comes with a guide that will guide you step-by-step through the procedure. Once you have the key and key programmer, follow the instructions carefully and ensure that the security light on your dashboard is turned ON prior to turning the engine on. 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 help. They'll have the tools and equipment needed to cut blank keys, erase the old key from the computer of the car, and program the new key to function properly. This will save you time and money, and will ensure that your car's security system operating exactly as it should. Plus, it is much safer than making it yourself. If you choose the wrong key programmer or follow unofficial guides or instructions, the information stored in your car's system could be corrupted, and the new key will not work. reprogram car key If your car keys don't work you may need to change the programming. This is a straightforward process for many modern vehicles that have key fobs. car key programming are more complicated and require a specific programming device, which is normally available at the dealer or from auto locksmiths. To prevent theft of vehicles Modern car manufacturers have enhanced the security of their key systems. The key system is designed in a way to stop hot-wiring, which is using a key from a different vehicle to start the engine of your vehicle. As a result, you'll need at least two working key fobs for your vehicle to be able to use the system. It's essential to have at minimum two spare keys available. The key fobs have electronic chips in them which communicate with the car's receiver using radio signals. The computer compares the key's code with the database. If the codes are the same the car will be able to start. If not, the vehicle will be dead or refuses to start. Most electronic keys can be programmed and replaced by a professional locksmith or auto dealer using the appropriate equipment. If you're able to find a low-cost car key programer on the internet or in an auto parts store, the process should be fairly straightforward. You will need to follow a set-up that include inserting the ignition key and turning it on, without starting the vehicle, and then switching off the key. You'll have to repeat this process a certain number of times within a certain time period for your vehicle to enter programming mode. The door locks will cycle or chime. Some modern cars are only programmable with a tool connected to the onboard diagnosis port or EEPROM programming. Most of these tools are expensive and therefore are not accessible to most car owners. As such, most car experts recommend that you consult with an experienced locksmith or dealer for key programming services.