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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 include a remote to lock and unlock doors. These key fobs have to be programmed to function. Some car keys can be programmed by the owner himself, but it's best to consult with an expert. This will avoid any damage to the computer system of the vehicle and ensure that the key functions correctly. How do you program the key Before the turn of the 21st century the majority of cars had basic key systems. Keys were made from metal and had grooves to correspond to the internal parts in the ignition cylinder. As time passed and technology advanced, more and more automobile manufacturers began to combine electronic and physical protocols to prevent theft. These key systems are called transponder keys or chip keys, and they're designed to make it harder for thieves to start the vehicle. The key chips contain an unique serial number that transmits a message to the receiver in your car. The signal is then compared to an identifier in the car's computer when it is received. If the codes are identical the car will begin to begin to start. If the codes aren't compatible, your car will not even start. This is why it is important to keep an extra car key, particularly if your system is transponder-based. If you're interested in learning how to program keys, you'll need some specific equipment. You'll also require the blank key that matches your specific model and make. You can purchase them from an auto locksmith or a locksmith dealership, but it's essential to purchase the correct keys. If you attempt to use a key from another brand, it won't work. Begin by putting the new key into the ignition and turning it “on”. You will need 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 verify that the security indicator on your dashboard has gone off. If it didn't, you'll need to repeat the process for the third time. Keep in mind that this method can only work on GM vehicles however it isn't 100% secure. If you want a more secure and reliable solution then you should visit a locksmith or a dealer to get your vehicle programmed with an embedded chip. These professionals have the tools and equipment required to connect to the onboard diagnostics port in your vehicle and make the change. Keyless Entry Systems Keyless entry systems allow access to properties without the need for a physical credential. Security is provided by the combination of sensors and an onboard computing device. It is possible to monitor and control the system from anywhere in the property. Keys and locks are not required. The system is also able to detect and block stolen or lost cards. In addition, the latest models are cloud-based, allowing for remote management and configuration. The majority of modern cars are equipped with a keyless entry system. To make this work the car emits radio signals which are picked up by a special key fob. The signals are then compared with the correct code stored in the car's computer and when everything is in order, the car will unlock. If the signals do not match, the car will not start. There are several steps you can take to program your new key fob, if it's not programmed yet. First, you'll need to ensure that all 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 may also visit your local auto parts shop to see if they have the right tool for your vehicle. If these steps do not work, you'll need to consult the owner's manual or a professional locksmith. Once you've got the proper tool, you can follow the instructions of the manufacturer to begin programming your key fob. The process is usually quick and easy. You may be instructed to insert the new key into the ignition after closing all doors, and then press the button on the keyfob within the time frame. The car could then respond by adjusting the door locks or emitting a chime to indicate that the key was successfully programmed. Many locksmiths have special tools that let them bypass the built-in EEPROM security of your car's key fob or remote. But this is a risky method and has the potential of corrupting the data on the computer in your car. This is best left to a professional who can reduce the risk of data corruption and ensure that your keys are correctly programmed. Transponder Keys Transponder keys are also known as chip keys. They have an embedded microchip in the head of keys. When the key is placed in the barrel of the ignition lock and turned to the ON position the antenna ring emits an energy burst through the transponder chip. The chip absorbs this energy, and then transmits a radio frequency signal that contains an identification code. This code is in line with the unique digital serial numbers in the computer system of the car. This prevents an unauthorized attempt to start the car because only a valid key will be able to start the car. This technology is thought to be more secure than a traditional car key, as it makes it difficult for a criminal to “hot wire” the vehicle to start it. It's not foolproof, and thieves have found ways to evade detection and defeat the system. So even cars with transponder key are not immune to theft. Based on the make and model of your car You may be in a position to program a brand new transponder key by yourself using a key programmer that's compatible with your specific car. The key programmer should come with an instruction manual that will walk you through the procedure of programming your key. Follow the directions and turn on the security lights on your dashboard prior to starting your engine. If you're not comfortable with programming keys, or if your car comes with more advanced features, such as remote head keys or smart keys, you can go to a professional locksmith for assistance. They'll have the appropriate tools and equipment to cut your blank key, erase your old one from your computer in your car and then program the new key to ensure that it functions properly. This will save you time and money and will ensure that your car's security system functioning as it should. It's also a lot safer than trying to do it yourself! If you use the incorrect key programming software or follow a guide that is not official or instructions, the information stored in your car's computer could be corrupted, and the new key won't function. Remotes You may have to reprogramme your car keys if they don't work. This is an easy process for many modern cars that use key fobs. However, certain models are more complicated and must be programmed with the help of an instrument that is available from the dealer or auto locksmith. To decrease the risk of theft from vehicles, modern car manufacturers have improved the security of their key systems. The key system was 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 ensure that the process works. It's important to have at minimum two spare keys on hand. The key fobs have electronic chips in them that communicate with the car's receiver via radio signals. The computer examines the key's code with the database. If the codes are the same the car will be able to start. If the codes don't match then the car will not start or remain dead. Luckily, most of these electronic keys can be replaced and programmed by a professional auto dealer or a locksmith with the right equipment. If you can find an inexpensive car key programmer online or at an auto parts store, the procedure is fairly simple. You'll need to follow a particular set of steps that include inserting the key into the ignition, turning it on, without starting the engine, then turning off the key. You'll need to repeat this procedure a specific number of times within a specified time period for your vehicle to enter programming mode. This will be indicated by the door locks cycling or a chime that sounds audible. Some modern cars are only capable of programming using a device connected to the onboard diagnosis port or EEPROM programming. key reprogramming of these tools are costly and are therefore not affordable for the majority of car owners. Therefore, the majority of car experts recommend that you speak with an experienced auto dealer or locksmith for key programing services.