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How to Program a Car Key Modern cars come with more than a key that can start the engine. They also come with a remote control that allows you to lock or unlock doors. These key fobs have to be programmed to work. Some car keys can be programmed by the owner, however it's best to consult with a professional. This will avoid any damage to the computer system of the vehicle and ensure that the key is working properly. How to program a Key The majority of cars had basic keys systems prior to the turn of the 21st century. The keys were made of metal and featured grooves that correspond with the internal parts in the ignition cylinder. As time passed and technology improved and improved, automobile manufacturers began blending electronic and physical protocols to protect against theft. Key systems also known as transponder keys or chips keys are designed to make it harder for thieves to open a vehicle. The key chips have unique serial codes that transmits a message to the receiver in your car. When the signal is received it is compared to the code that is stored in the car's computer. If the codes are identical the car will begin to begin to start. If not, it won't start at all. This is why it is important to keep an extra car key especially if your system is based on transponders. If you're looking to learn how to program a key, you'll need some special equipment. You'll need a blank key that is compatible with the car's model and make. You can buy them at an auto locksmith or a locksmith dealership, but it's important to purchase the correct keys. If you use a key that is for another model, it won't function. Start by inserting the new key in the ignition and turning it “on”. It is necessary to keep the key in this position for about 10 minutes and 30 seconds. Once the time is up you can take out the key and check whether the security light on your dashboard was gone. If it didn't go out you'll have to repeat the process a third time. Keep in mind that this method will only work with GM vehicles but it's not 100% secure. If you're looking for a safer and reliable solution, then you should visit an expert locksmith or dealer to have your car programmed with a chip. They are equipped with the tools and equipment needed to connect to the diagnostics port of your car and perform the switch. Keyless Entry Systems Keyless entry systems grant access to properties without the need for a physical ID. Security is provided by sensors that are combined with an onboard computer. It is possible to monitor and control the system from any place within the property. Keys and locks are not required. The system can also identify and block stolen or lost cards. The most recent models also permit remote management and configuration and are cloud-based. The majority of modern cars are equipped with a keyless entry system. The system works by emitting radio signals that are detected by an specialized keyfob. The signals are compared with the code stored in the computer of the car and, if all is in order, the car will unlock. If the signals don't match and the car does not start. There are several steps you can follow to program your new key fob if it's not already programmed. First, you'll need to make sure that all doors, except the driver's door are locked. You'll need the original key fob along with any additional devices you want to program. You can also try your local auto parts shop because they might have the appropriate programming tool for your vehicle. If these steps don't work, you'll have to consult your owner's manual or an expert locksmith. Once you have the right tool, follow the instructions of the manufacturer to begin programming your key fob. This procedure is usually quick and easy. You may be instructed to insert the new key in the ignition after closing all doors, and then press the button on the keyfob within a certain time period. The car could respond by turning off the doors or emitting an audible sound as an indication that the key was successfully programmed. Many locksmiths have special tools that permit them to bypass the built-in EEPROM security of the key fob of your car or remote. This is a risky technique and can corrupt the data stored in the car's computer. It is recommended to have an expert handle this, as they will be able to lower the chance of data corruption and make sure your keys are properly programmed. Transponder Keys Transponder keys are also known as chip key. They have a microchip embedded in the head of the keys. When the key is inserted into the ignition lock barrel and then turned to ON the antenna ring emits an energy burst through the transponder chip. The chip absorbs this energy, and then sends a radio frequency signal which contains an identification number. The code is matched to the unique serial numbers of the computer system of the car. This prevents any attempts by anyone else to start the car since only proper keys will be able to do so. car key programming of technology is thought to be more secure than a conventional car key since it makes it harder for thieves to “hot wire” the vehicle to start it. It's not foolproof, and thieves have found ways to trick and defeat the system. Therefore, even vehicles with a transponder keys aren't immune to theft. You might be able to program a transponder key yourself if you have a key programmer compatible with your vehicle. The key programmer comes with a user guide that walks you step-bystep through the process. Follow the instructions and switch on the security light on your dashboard prior to starting your engine. You can contact an expert locksmith to assist you if you are not confident with the key programmer or you have a car with more advanced features, such as remote head keys or intelligent keys. They'll have the tools and equipment needed to cut blank keys, erase the old one from the computer of the car, and then program the new key for it to work correctly. This will save your time and money, and will help keep your car's security system functioning just as it should. Plus, it is much safer than doing it yourself. If you use a incorrect key programming software or follow unofficial guides, the information in your car's system could be damaged and the new key will not function. Remotes It is possible to change the programming of your car keys if they're not working. This is a simple procedure for a lot of modern cars that use key fobs. However, some models are more complicated and need to be programmed using a special device that's usually available from the dealer or auto locksmiths. To prevent theft of vehicles Modern car makers have increased the security of their key systems. The key system is designed to stop hot-wiring, which is the act of using a key from another vehicle to start your car's engine. To ensure that this method works you'll require at least two key fobs working for your vehicle. It's essential to have at least two spare keys in your possession. The key fobs have electronic chips which communicate with the car's receiver using radio signals. The computer checks the key's code with the database. If the codes match the car will begin. If not, the vehicle will remain dead or refuse to start. Luckily, most of these electronic keys can be programmed and replaced by a professional locksmith or auto dealer using the appropriate equipment. The process should be relatively simple if you can find a cheap key programmer on the internet or in an auto parts store. You'll have to follow a particular set of steps that include inserting the key into the ignition, turning it on, but not activating the engine, and then turning off the key. You'll need to repeat this a certain number of times within a certain time period to allow your vehicle to enter programming mode. This is indicated by the door locks turning or a chime that sounds audible. Some modern vehicles are capable of programming using a device connected to the onboard diagnostic port or EEPROM programming. Unfortunately, most of these devices are very expensive, and therefore unattainable for most car owners. Many experts in the field recommend consulting a reputable auto dealership or locksmith to program your keys.