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How to how much to reprogram a car key uk have more than a key that can start the engine. They also have a remote control which can be used to lock or unlock doors. These key fobs must be programmed to work. It is possible to program some car keys by the owner, however it is advised to consult a professional. This will prevent any damage to the computer system of the car and ensure that the key is working correctly. How to program a key The majority of cars had basic key systems until the turn of the 21st century. The keys themselves were metal and had grooves that were connected to the internal components of the ignition cylinder. As technology improved the number of car makers began to combine physical and electronic protocols in order to prevent theft. Key systems like these are also referred to as transponder keys or chips keys, are designed to make it more difficult for thieves to steal the vehicle. The key chips contain an unique serial number that sends a message to the receiver inside your car. When the signal is received, it compares it to an existing code in the car's computer. If the codes are identical the car will begin to start. If not, it won't start at all. This is why you should keep a spare car key, especially if your system is based on transponders. If you're looking to learn how to program keys, you'll require some specific equipment. You'll also require an uncut key that matches your specific make and model. They can be purchased from an auto dealership or from a locksmith however, you must be sure that they are the right ones. If you use a key from another model, it will not work. Start the process by inserting the new key into the ignition and turning it “on”. You'll need to keep the new key in this position for about 10 minutes and 30 seconds. When the time has passed you can take off the key and see if the security light on your dashboard went out. If not then you'll need to repeat the process for another time. Keep in mind that this method can only work on GM vehicles however it isn't foolproof. If you're looking for a more secure and reliable option go to a locksmith or a dealer to have your car programmed using an embedded chip. They are equipped with the tools and equipment required to access the onboard diagnostic port on your vehicle and make the necessary changes. Keyless Entry Systems Keyless entry systems provide property access without requiring an actual credential. They use sensors in conjunction with an onboard computer to offer security. It is possible to control and monitor the system from anywhere within the property. Keys and locks are not required. The system can also identify and block stolen or lost cards. Additionally, the most recent models are cloud-based and allow for remote management and configuration. Most modern cars come equipped with the keyless entry system. To enable this feature the car emits radio signals which are picked up by a particular key fob. The signals are then compared with the correct code in the car's system, and when everything is in order the car will be able to unlock. The car won't start when the signals aren't identical. If your key fob isn't already programmed, it is possible to follow a few steps to program it. First, you'll need ensure all the doors are locked except for the driver's side. Also, you'll need the original key fob as well as any extras you want to program. You can also check your local auto parts shop to see if they have the right tool for your vehicle. If these steps don't work, you'll need to consult the owner's manual or a professional locksmith. Once you have the correct tool Once you have the correct tool, you can begin reprogramming of your key fob following the manufacturer's instructions. This process is often relatively simple and quick. You might be told to put the new key in the ignition after closing all doors and then press the button on the keyfob after a certain time period. The car could then respond by turning off the door locks or emitting a sound to indicate that the key was successfully programmed. A lot of locksmiths have tools that let them bypass the built-in EEPROM security of the car's key fob or remote. However it's a risky method and has the potential of destroying the data stored on the computer in your car. This is best left to a professional, who can reduce the risk of data corrupting and ensure that your keys are programmed correctly. Transponder Keys Transponder keys, also referred to as chip keys, are equipped with an embedded microchip in the head of the key. When the key is placed in the barrel of the ignition lock and turned to ON, the antenna ring sends an energy burst through the transponder chip. The chip absorbs the energy and then transmits a radio frequency signal that includes an identification code. This code is in line with the unique serial numbers in the computer system of the car. This stops unauthorized attempts to begin the car, as only proper keys will be able to do so. This technology is believed to be more secure than conventional car keys because it makes it much more difficult for thieves to “hot wire” a vehicle and start it. It's not foolproof and thieves have discovered ways of tricking and defeating the system. Therefore, even vehicles with a transponder key are not safe from theft. You may be able program a transponder key on your own with a key programmer compatible with your car. The key programmer will come with a user guide that will take you step-by-step through the procedure. Follow the directions and turn on the security light on your dashboard prior to starting your engine. If you're not comfortable with the use of a key programmer or if your vehicle has more advanced features like remote head keys or smart keys, you can go to a professional locksmith assistance. They will have the tools and equipment required to cut blank keys, erase the old key from the computer of the car, and program the new key for it to function properly. This will save your time and money, and will keep your car's security system working just as it should. Plus, it is much safer than making it yourself. Using the wrong key programmers or following unofficial guides can alter the information stored in the vehicle's system and result in the new key not functioning. Remotes If your car keys aren't working you may need to change the programming. This is an easy process for many modern cars that utilize key fobs. Some models are more intricate and require a specific programming device, which is usually available from the dealer or through auto locksmiths. Fortunately, most 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 (the practice of using another vehicle's key to start the engine) and other similar methods. Therefore, you'll require at minimum two working key fobs for your vehicle in order to make the process work. This is one of the reasons why it's recommended to have at least one spare key on hand. The key fobs have electronic chips inside them that communicate with the car's radio via radio signals. The computer in the car then compares the code on the key to the one in its database. If the codes match, the car will start. If the codes do not match the car won't start or will remain dead. The majority of these electronic keys can be programmed and replaced by an experienced locksmith or auto dealer using the appropriate equipment. The process is fairly simple if you can find a low-cost key programmer on the internet or at an auto parts store. You'll need to follow a specific sequence of steps, which includes inserting the key into the ignition, turning it on, without activating the engine, and then turning off the key. You'll need to repeat this procedure a specific number of times within a specific time frame for your vehicle to enter programming mode. The door locks will be triggered or chime. Some modern vehicles are programmable with a tool connected to the onboard diagnosis port or EEPROM programming. Unfortunately, most of these tools are incredibly expensive, making them unaffordable for most car owners. Therefore, the majority of car experts recommend to consult a professional auto dealer or locksmith for key programing services.