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How to Program a Car Key Modern cars come with more than a key that starts the engine. They also come with a remote control which can be used to lock or open doors. These key fobs must be programmed to work. It is possible to pre-program certain car keys by the owner, however it is advised to consult an expert. This will prevent any damage to the computer system of the car and ensure that the key functions properly. How to program a Key Most cars had basic key systems until the turn of 21st century. Keys were made from metal and featured grooves that correspond to the internal parts of the ignition cylinder. As technology advanced, more and more car manufacturers began to combine electronic and physical protocols in order to prevent theft. These key systems are known as transponder keys or chip keys and they're designed to make it harder for thieves to open the vehicle. The key chips contain a unique serial code that sends a message to the receiver inside your car. When the signal is received it is compared to an existing code in the car's computer. If the codes are compatible, then your car will begin to start. If not, it won't start at all. This is one of the primary reasons to keep a spare key in your car, especially in the case of transponder-based systems. You'll require specialized equipment to learn how to program keys. You'll need to buy a blank key that matches your car model and make. You can buy them at the locksmith shop or at a car dealership, but it's essential to purchase the correct keys. If you use a key that is for another model, it will not function. Start the process by inserting the new key into the ignition and turning it to “on”. It is necessary to keep the key in this position for about 10 minutes and 30 seconds. After the time is up, you can remove your key and verify that the security indicator on your dashboard has gone off. If it didn't then you'll need to repeat the process three times. This method is only compatible with GM vehicles, and isn't completely secure. If you're looking for a secure and reliable option, you can visit an auto locksmith or dealer to get your vehicle programmed with an embedded chip. These professionals are equipped with the tools and equipment needed to connect to the onboard diagnostic port on your vehicle and make the necessary changes. Keyless Entry Systems Keyless entry systems provide property access without requiring the use of a physical ID. They use sensors in combination with an onboard computer to provide security. It is possible to control 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. Additionally, the most recent models are cloud-based and permit remote management and configuration. Modern cars are equipped with keyless entry systems. programming car keys by sending radio signals that are received by a special keyfob. These signals are then compared with the correct code stored in the car's computer, and when everything is in order the car will start to unlock. The car will not start if the signals are not identical. There are several ways to program your new key fob, if it's not already programmed. First, you'll need make sure that all doors are locked, with the exception of the driver's side. You'll need the original key fob as well as any additional devices you want to program. You can also visit your local auto parts store to see if they've got the appropriate tool for your vehicle. If these steps do not work, you'll have to check the owner's manual, or an expert locksmith. Once you have the correct tool, you can follow the manufacturer's instructions to begin programming your key fob. This procedure is usually quick and easy. You might be told to insert the new key in the ignition after closing all doors, and then press the button on the keyfob within the time frame. The car could then respond by cycling the door locks or generating a chime to signal that the key has been successfully programmed. Many locksmiths have special tools that permit them to bypass the built-in EEPROM security of the car's key fob or remote. But it's an extremely risky option and has the potential of destroying the data on the computer in your car. It's best to have an expert handle this, as they will be able to lower the risk of data corruption and also ensure that your keys are correctly programmed. Transponder Keys Transponder keys, also known as chip keys, have a microchip embedded in the head of the key. The antenna ring transmits electromagnetic energy to the transponder when the key is placed into the barrel of the ignition lock. This energy is absorbed by the chip and it transmits an audio frequency signal that contains an identification code that matches with the unique serial number in the car's computer system. This prevents unauthorized attempts to start the car, since only the right key can perform the task. The technology is believed to be more secure than a conventional car key, as it makes it harder for a thief “hot wire” the vehicle and then start it. It's not foolproof, and thieves have discovered ways to evade detection and defeat the system. Therefore, even vehicles with a transponder key are not immune to theft. Depending on the make and model of your vehicle depending on the make and model of your car, you might be able to program a new transponder key by yourself using a key programmer that's compatible with the car you own. The key programmer will come with a manual that walks you step-bystep through the procedure. Follow the steps and switch on the security light in your dashboard prior to starting your engine. If you're not comfortable with programming keys or if your vehicle includes more advanced features such as remote head keys or smart keys, you can go to a professional locksmith for help. They'll have the right tools and equipment to cut the blank key, remove your old one from your computer in the car and then program the new one so that it will work properly. This will save you time and money, and will ensure that your car's security system functioning just as it should. It is also safer than doing it yourself. Making use of the wrong key programmers or following unofficial guidelines could cause a problem with the information stored in your car's system, resulting in your new key not working. Remotes You may have to reprogramme your car keys if they don't work. It's a straightforward process for most modern cars which use keyfobs. However, certain models are more complex and need to be programmed using a special device that's usually available from the dealer or auto locksmith. Fortunately, most modern car manufacturers have made their key systems more secure to decrease the risk of theft from vehicles. The key system is designed to prevent hot-wiring (the practice of using the key of another vehicle to start the engine) and other similar methods. Therefore, you'll need to have at least two working key fobs for your vehicle to be able to use the system. This is one of the reasons why it's best to have at least one spare key in your possession. The key fobs have electronic chips that communicate with the car's receiver using radio signals. 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 start. If not, the vehicle will remain dead or refuse to start. Most electronic keys can be programmed and replaced by an experienced locksmith or dealer in the field with the appropriate equipment. The procedure should be fairly simple if you are able to locate a key programmer that is cheap on the internet or in an auto parts store. You'll need to follow a set of instructions that include inserting the ignition keys, turning it on without starting the vehicle, and then switching off the key. You will need to repeat the steps a specified number of times over a specified time frame to get your vehicle into programming mode. This will be indicated by the door locks chiming or a chime that sounds audible. Certain modern vehicles are only capable of programming using a device connected to the onboard diagnostic port or EEPROM programming. Most of these tools are very expensive and therefore unaffordable by most car owners. Most car experts recommend consulting with an experienced auto dealer or locksmiths to program your keys.