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How to Program a Car Key Modern cars come with more than a key to start the engine. They also come with a remote that can lock and unlock doors. Key fobs have to be programmed to work properly. Some car keys can be preprogrammed by the owner himself, but it is recommended to consult a professional. This will prevent any damage to the computer system of the car and ensure that the key functions correctly. How to program a Key The majority of cars had basic key systems until the turn of 21st century. Keys were made from metal and had grooves to correspond to the internal parts in the ignition cylinder. As technology improved, more and more car manufacturers began to combine physical and electronic protocols to stop theft. These key systems are known as transponder keys or chip keys, and they're designed to make it more difficult for thieves to get into the vehicle. The key chips in the keys have a specific serial number that sends 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 then your car will start. If not, it won't start at all. This is why it is important to keep a spare car key, particularly if your system is based on transponders. 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. They can be purchased from a dealership or by a locksmith, but you must make sure they're the correct ones. If you use a key from another model, it won't function. Begin by putting the new key into the ignition and turning it to “on”. It is necessary to leave the new key in this position for around 10 minutes and 30 second. Once the time has expired, you can remove your key and see if the security indicator on your dashboard has gone out. If programming car key did not, you will need to do it three times. Be aware that this method can only work with GM vehicles, and it's still not 100% secure. If you're looking for a more secure and reliable solution, then you should consult 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 change. Keyless Entry Systems Keyless entry systems permit property access without the requirement for a physical credential. They make use of sensors in conjunction with an onboard computer to provide security. It is possible to manage and monitor the system from any place within the property. Keys and locks are not required. The system is also able to detect stolen or lost cards and deactivate them. The latest models also support remote management and configuration and are cloud-based. The majority of modern cars are equipped with the keyless entry system. This system works by emitting radio signals which are picked up using an specialized keyfob. The signals are then compared to the code that is stored in the car's computer and, if all is in order the car will start to unlock. If the signals don't match then the car won't start. There are a variety of steps you can take to program your new key fob, if it's not already programmed. First, you'll need ensure all the doors are locked except for the driver's side. You'll need the original key fob along with any additional devices you want to program. You may also visit your local auto parts shop to see if they've got the appropriate 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, you can begin the reprogramming of your key fob by following the instructions provided by the manufacturer. The process is typically quick and easy. For instance, you could be instructed to insert your new key into the ignition while keeping the doors shut, and then press a button on the key fob within a brief time. The car may then respond by adjusting the door locks or generating a chime to indicate that the key has been successfully programmed. A lot of locksmiths have tools that allow them to bypass the built-in EEPROM security on your car's key fob or remote. However this is a risky method and comes with the possibility of corrupting the data on your car's computer. This is best left to a professional who can lower the chance of data corruption and make sure that your keys are correctly programmed. Transponder Keys Transponder keys are also known as chip key. They are equipped with a microchip embedded in the head of keys. The antenna ring transmits electromagnetic energy to the transponder whenever the key is placed in the barrel of the ignition lock. The energy is absorbed by the chip and sends back the radio frequency signal, which includes an identification code that is matched with the unique serial number that is stored in the car's computer system. This will prevent any unauthorized attempts to start the car, since only the right key will be able to perform the task. This type of technology is thought to be more secure than the traditional car key, as it makes it harder for a thief “hot wire” the vehicle to start it. But it's not foolproof and thieves have found ways to deceive and defeat the system – which means that even cars equipped with transponder keys are not protected from theft. Depending on the make and model of your vehicle You may be capable of programming a new transponder key by yourself with a key programer that is compatible with the car you own. The key programmer will come with a guide that will take you step-by-step through the procedure. Follow the instructions and switch on the security light in your dashboard prior to beginning your engine. You can contact a professional locksmith to help you if you're not confident with the key programmer or you own a vehicle with more advanced features, like remote head keys or intelligent keys. 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 work correctly. This will save your time and money, and will keep your car's security system working just as it should. Additionally, it's much safer than making it yourself. Making use of the wrong key programmers or following unofficial guidelines could cause a problem with the information stored in your vehicle's system and result in your new key not working. Remotes It is possible to change the programming of your car keys if they aren't working. It's a simple procedure for the majority of modern cars which use keyfobs. However, certain models are more complicated and must be programmed using a special device that's usually available from a dealer or auto locksmiths. Fortunately, the majority of modern automobile manufacturers have improved their key systems to be more secure to reduce vehicle thefts. The key system is designed to avoid hot-wiring (the practice of using a key from another vehicle to start the engine) and other similar methods. Therefore, you'll require at least two working key fobs for your vehicle in order to be able to use the system. This is just one of the reasons why it's best to have at least one spare key in your possession. Key fobs are equipped with electronic chips in them which communicate with the car's receiver using radio signals. The computer compares the key's code with the database. If the codes match the car starts. If not, the vehicle will remain dead or refuse to start. Most of these electronic key can be programmed and replaced by a professional locksmith or dealer in the field with the right equipment. If you're able to find a cheap car key programmer online or at an auto parts store, the procedure should be fairly straightforward. You'll need to follow a set-up that includes inserting the ignition key, turning it on without starting the vehicle, then switching off the key. You will need to repeat the steps a specific number of times over an exact time period to get your vehicle into programming mode. This is indicated by the door locks cycling or an audible chime. Some modern cars can only be programmed with the help of a device that is connected to the onboard diagnostics port or an EEPROM programming process. Unfortunately, most of these tools are incredibly expensive, which makes them unaffordable for most car owners. The majority of car experts recommend consulting a reputable auto dealership or locksmiths to program your keys.