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How to Program a Car Key Modern cars come with more than just a key which can start the engine. They also come with a remote control that allows you to lock or open doors. Key fobs have to be programmed to work properly. Some car keys can be programmed by the owner himself, but it's best to consult with a professional. This will help to prevent any possible damage to the car's 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 up until the turn of 21st century. Keys themselves were metal and had grooves that were connected to the internal parts of the ignition cylinder. However, as time progressed and technology advanced as it did, automobile manufacturers began to combine physical and electronic protocols to protect against theft. These key systems are called transponder keys or chip keys, and are designed to make it harder for thieves to open the vehicle. The key chips in the keys have a specific serial number, which transmits an electronic signal to the receiver inside your car. When the signal is received it is compared to the code that is stored in the car's computer. If the codes match the car will begin to begin to start. If not, it won't start at all. This is one of the main reasons you should keep a spare key in your vehicle, particularly in the case of transponder-based systems. You'll require special equipment to be able to program keys. You'll need to buy an uncut key that matches the car's model and make. They can be bought at the dealership or through locksmiths however, you must be sure that they are the correct ones. If you attempt to use a key from an alternative model, it won't work. Start by inserting the new key into the ignition and turning it “on”. It is necessary to leave the new key in this position for approximately 10 minutes and 30 seconds. Once the time has expired you can take out your key and see if the security indicator on your dashboard has gone out. If it did not, you will need to repeat the process for the third time. This method is only compatible with GM vehicles, and isn't 100% secure. If you want a more reliable and secure solution go to a locksmith or dealer to get your car programmed using an embedded chip. These professionals have the necessary tools and equipment needed to access your car's onboard diagnostics port and make the switch. Keyless Entry Systems Keyless entry systems provide access to properties without the need for an actual credential. Security is provided by the combination of sensors and an onboard computer. It is possible to manage and monitor the system from anywhere in the property. Keys and locks are not required. The system can also detect and block stolen or lost cards. The latest models also support remote management and configuration, and are cloud-based. Most modern cars come equipped with an entry system that is keyless. To accomplish this, the vehicle emits radio signals that are detected by a special key fob. These signals are then compared against the correct code that is stored in the car's computer and when everything is in order the car will start to unlock. If the signals do not match then the car won't start. There are several steps you can take to program your new key fob, if it isn't already programmed. You'll first need to be sure that all doors, except the driver's door are locked. You'll need to have the original key fob as well as any extras that you want to program. You can also visit your local auto parts store to see if they have the right tool for your car. If these steps do not work, you'll need consult the owner's manual or an expert locksmith. Once you have the correct tool You can begin the reprogramming of your key fob by following the manufacturer's instructions. This process is often relatively simple and quick. You may be instructed to put the new key in the ignition while all doors are closed and then press the button on the keyfob within the time frame. The car could respond by cycling door locks or emitting an audible chime, which is an indication that the key was successfully programmed. Many locksmiths are equipped with special tools that let them bypass the built-in EEPROM security on the car's key fob or remote. This is a risky method and could cause data corruption stored in the car's computer. This should be left to a professional who can reduce the risk of data corruption and ensure that your keys are correctly programmed. Transponder Keys Transponder keys, also known as chip keys, are equipped with an embedded microchip in the head of the key. When the key is inserted into the ignition lock barrel and turned to ON, the antenna ring sends 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 of the car. This stops any attempts by anyone else to start the car since only right keys can be used. This type of technology is thought to be more secure than a traditional car key since it makes it difficult for a thief “hot wire” the vehicle to 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 immune to theft. You may be able program a transponder key on your own when you have an appropriate key programmer for your vehicle. The key programmer will come with a manual that will take you step-by-step through the process. Follow the steps and turn on the security lights on your dashboard prior to beginning your engine. You can contact a professional locksmith to help you if you're not sure about using the key programmer or you own a car that has more advanced features, such as remote head keys or intelligent keys. They will have the tools and equipment needed to cut an uncut key, erase the old key from the computer of the car, and program the new key to function correctly. This will save you money and time, and keep your car's safety system functioning just as it should. It's also a lot safer than attempting to do it yourself! Using the wrong key programmers or following unofficial guides can alter the information stored in the car's system, resulting in the key not functioning. 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 use key fobs. However, some models are more complex and must be programmed using an additional device that's typically available from a auto locksmith or dealer. Fortunately, many modern car manufacturers have improved their key systems to be more secure in order to reduce vehicle thefts. The key system is designed to prevent hot-wiring, which is the act of using a key from a different vehicle to start the engine of your vehicle. To be able to make this process work you'll require at least two key fobs that are functioning for your vehicle. programming a car key is essential to have two spare keys in your possession. Key fobs are equipped with electronic chips that communicate via radio signals with the car's receiver. The computer checks the code of the key with the database. If the codes match the car will begin. If not, the vehicle will not start or fail to start. Fortunately, the majority of electronic keys can be replaced and programmed by an expert auto dealer or a locksmith equipped with the proper equipment. If you can find a low-cost car key programer on the internet or at an auto parts store, the process is fairly simple. You will need to follow a set-up that include inserting the ignition keys, turning it on without actually starting the vehicle, and then shutting off the key. You'll need 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 be triggered or chime. Certain cars of the present can only be programmed by means of a tool that's connected to the onboard diagnostics port, or an EEPROM programming procedure. Most of these tools are costly and are therefore not affordable for the majority of car owners. Therefore, the majority of experts in the field recommend that you consult with an expert locksmith or auto dealer for key programming services.