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How to Program a Car Key Modern cars use more than just a single 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 pre-program certain keys for cars by the owner, however it is best to consult a professional. This will help to avoid any damage to the car's computer system and ensure that the new key functions properly. How to 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 components of the ignition cylinder. However, as time progressed and technology advanced as it did, automobile manufacturers began to combine physical and electronic protocols to stop theft. These key systems are referred to as transponder keys or chip keys and they're designed to make it difficult for thieves to open the vehicle. The key chips contain an unique serial number that sends a message to the receiver inside your car. The signal is compared with a code in the car's computer when it is received. If the codes are similar then your car will begin. If the codes aren't compatible, your car will not even start. This is the reason you should keep a spare car key, particularly if your system is transponder-based. You'll require specialized equipment to be able to program keys. You'll need to buy an uncut key that matches the model and make of your car. You can purchase them from a locksmith or a car dealership, but it's crucial to buy the right one. If you use a key for another 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 leave the key in this position for around 10 minutes and 30 seconds. Once the time is up, you can remove the key and check if the security light on your dashboard was gone. If not then you'll have to do it again for another time. Keep in mind that this method can only work on GM vehicles, and it's still not 100% secure. If you're looking for a safer and reliable solution, then you should seek out a professional locksmith or dealer to have your car programmed with chips. They have the tools and equipment to access the diagnostic port on your car's motherboard and make the switch. Keyless Entry Systems Keyless entry systems give property access without requiring the use of a physical ID. Security is offered by a combination between sensors and an onboard computer. This lets you manage the system and monitor its activity from any place within the property, and does away with the requirement for keys or locks. The system is also able to detect and deactivate lost or stolen cards. In addition, the latest models are cloud-based and allow for remote management and configuration. Modern cars are equipped with keyless entry systems. The system works by emitting radio signals that are detected by the keyfob. These signals are then compared with the correct code in the car's system, and if everything is in order, the car will unlock. If the signals do not match and the car does not start. If your key fob isn't already programmed, it is possible to follow several steps to programme it. First, you'll need to ensure all the doors are locked, except for the driver's side. You'll need to have the original key fob along with any other devices you wish to program. You can also visit your local auto parts store to see if they've got the right tool for your vehicle. If these steps do not work, you'll need consult the owner's manual or a professional locksmith. Once you have the proper tool, you can begin the changing the programming of your key fob by following the instructions provided by the manufacturer. The process is usually fast and simple. For instance, you could be directed to insert your new key into the ignition while keeping the doors shut, and then press the button on the key fob within a brief time period. The car could respond by cycling door locks or emitting an audible chime, which is an indication that the key has been successfully programmed. A lot of locksmiths have tools that allow them to bypass the built-in EEPROM security on the car's key fob or remote. But it's an extremely risky procedure and could lead to the possibility of destroying the data stored on the computer in your car. It is best to let an expert handle this because they will be able to lower the chance of data corruption and make sure your keys are properly programmed. Transponder Keys Transponder keys, also referred to as chip keys, have an embedded microchip in the head of the key. When the key is placed in 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 and sends back a radio frequency signal with an identification code that is matched up to the unique serial number that is stored in the car's computer system. This stops unauthorised attempts to start the car as only the right keys can be used. This technology is believed to be more secure than traditional keys for cars because it makes it harder for a thief to “hot wire” an automobile and get it started. But it's not foolproof and thieves have discovered ways to evade and defy the system – so that even cars with transponder keys aren't protected from theft. Depending on the make and model of your car You may be able to program a new transponder key by yourself by using a key programming device that's compatible with the car you own. The key programmer should include an easy-to-follow guide to walk you through the process of programming your key. Once you have your key and a key programmer, follow the directions carefully and ensure that the security light on your dashboard is turned ON prior to turning the engine ON. 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, like remote head keys or intelligent keys. They'll have the right tools and equipment to cut your blank key, erase your old one from your computer in your car, and then program the new key so that it works properly. This will save you money and time and ensure that your car's safety system functioning just as it should. It is also safer than doing it yourself. If you use a wrong key programmer or follow unofficial guides, the information in your car's system can be damaged and the new key will not function. Remotes If your car keys don't work it could be necessary to change the programming. This is a straightforward process for many modern cars that utilize key fobs. However, some models are more complex and must be programmed using an instrument that is available from the dealer or auto locksmiths. To reduce vehicle thefts, modern car manufacturers have increased the security of their key systems. 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'll need at least two key fobs that are working for your vehicle. This is one of the main reasons why it's recommended to have at least one spare key available. The key fobs have electronic chips that communicate using radio signals to the car's receiver. The computer in the car then compares the key's code with the one stored in its database. If the codes are the same the car will begin. If reprogram car key don't match the car won't start or remain dead. Luckily, most of these electronic keys can be replaced and programmed by an expert locksmith or an auto dealer with the right equipment. If you can locate an inexpensive car key programmer on the internet or at an auto parts store, the procedure should be fairly straightforward. You'll have to follow a sequence of steps that includes inserting the key into the ignition and turning it on, without running the engine, and then turning off the key. You'll have to repeat the steps a certain number of times in an exact time period to put your vehicle in programming mode. This will be indicated by the door locks cycling or a chime that sounds audible. Some modern vehicles are capable of programming using a device connected to the onboard diagnosis port or EEPROM programming. Unfortunately, the majority of these tools are incredibly expensive, making them unaffordable for most car owners. As such, most car experts recommend that you consult with an experienced locksmith or dealer for key programming services.