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How to Program Keys For Cars Typically, reprogramming car keys is the responsibility of a locksmith specialist. They can take your old working key and use a specific tool to program a new key for your vehicle. This involves reprogramming a blank chip in the replacement key so that it is compatible with the current settings of your vehicle. Certain manufacturers make this process simple, while others require a dealer or locksmith. Self-Programming The ignition keys have changed as has the technology of cars. There are no more simple mechanical-only keys that could be made at an hardware store for less than $10. The newer models have computers with improved anti-theft protection. To function correctly, these vehicles require that a transponder chip key be programmed to the vehicle by a professional locksmith or mechanic/car dealer. There are several kinds of car key programming that can be accomplished by professional locksmiths. Some are extremely complicated and may require advanced tools. These tools aren't generally available to the public and are utilized only by professionals. This kind of programming is known as EEPROM Programming. It requires soldering skills, electronic knowledge and a significant amount of time. Other types of car key programming are a lot simpler and can be accomplished by anyone who is able to. These are usually done by using the diagnostics port on the car, which can be accessed with a special key-fob-programming tool. This procedure can be carried out by a professional locksmith using an online guide or the car's owner manual. Professional locksmiths can program a new or replacement car key fob quickly. This is the best choice for a vehicle owner since they can provide a complete range of services. They also provide an affordable cost and assurance that the new key will function properly. Be aware that most automobiles only accept one programmed car key. So, if you're looking to save money, it may be better to purchase a working spare key fob and have it programmed by an auto locksmith. This way, you can be certain that the new key has been programmed to your vehicle and that it will work. If not, you'll have to pay the dealer for replacement keys and programming services. Key Programmers Modern cars require a key-programming method to set up their systems and then start the vehicle. In some cases, the key will need to be programmed by an auto locksmith or dealer. This is because the key might not function properly, or it will not start the vehicle in any way. This is because the key hasn't yet been programmed into the car's system. This can be expensive. It is recommended to have two keys that work for the modern automobile so that you can program the replacement key when required. A keyprogrammer can recode a transponder chip on a new mechanical key or key fob. It can also clone the data of an existing key and allow duplicate keys to be made. These are handheld devices that connect to a car's On Board Diagnostics (OBD port). They have diagnostic software that enables them to communicate with the computer and also provide an interface that works bidirectionally with the immobilizer system. There are a number of different types of keyprogrammers available on the market and they come in all shapes and sizes. Some keyprogrammers are cheap while others may cost thousands of dollars. Some are specifically designed for certain kinds of vehicles and can provide advanced diagnostics for your vehicle's electronic systems. Consult your owner's guide to learn how to program the key to your vehicle. Certain manufacturers have proprietary software that only allows the dealership to create new keys. Other manufacturers make it simple for anyone to complete. If you are unable to program the new key yourself and you are unable to do it, then request your dealer to do it, but it will cost you a lot. You can also buy a keyprogrammer from the internet. They are cheaper than visiting a dealer however, they aren't cheap. Make sure you research the seller before purchasing one – some are not reliable and can damage your car. Transponder Chips Transponder chips are likely to be found in cars that were manufactured within the last 20 years. This is the little piece of plastic in the head of your car key that contains an RFID (Radio Frequency ID) chip that has a unique code to your vehicle. The chip sends out an low-level radio signal once it is activated by an electromagnetic field. The signal is then absorbed by a special antenna attached to the ignition barrel. The computer system of the vehicle can then verify that the key's transponder chip is the right one for your car. This is the reason why from modifying or hot-wiring the ignition system of your vehicle to start it. The chip in the key also verifies that you are the legal owner of the vehicle. This can help to reduce the possibility of theft from your vehicle. Transponder keys resemble normal keys, but with caps made of plastic. The chip is housed within the plastic part of the key and there are different types of cuts on the keys: a standard cut laser cut (also called a sidewinder), or a Ford Tibbe key. When the transponder key is inserted in the ignition barrel, a circuit within of the induction coil sends out an electrical signal. The signal is taken up by the chip, which sends a signal to the vehicle. If the onboard car computer recognizes this signal as the correct one, it will shut down the immobilizer on the vehicle and allow the engine to begin. If the car isn't able to recognize the transponder as a valid signal, it won't start the engine and notify you via flashing lights and siren. This feature is designed to discourage those who would attempt to alter the vehicle. However it isn't a foolproof measure of security. A skilled and determined thief could still bypass this system using a special device that blocks the signal. As you can see, there are quite a number of advantages to having a transponder key. Every car owner must take this into consideration if they wish to protect their investment and minimize the risk of theft. Key Fobs In addition to locking and unlocking doors, launching the car from a distance or making noises to aid in finding a car in a parking lot keys of today can also turn on a heated steering wheel or roll down all of the windows with just a single push. These additional features can make it difficult for you to locate your car keys. Key fobs communicate with each other and with the car through radio frequencies that are transmitted by an antenna that is located in the center of the key. The transmission is encrypted, which helps keep others from stealing and retransmitting the signal. There are many ways to program a key fob based on the model and make. You may be able to do it yourself, but the majority of newer vehicles require an expert locksmith or dealer to program a replacement or a second fob. When you hit the button on a key fob, the microchip inside transmits a code to the car's receiver that it is paired with. The receiver compared the information with the 'allowed signals' stored in the key fob and then it opens or closes the car's doors. If the information isn't in line the signals, a chirping sound can be heard and the car isn't permitted to operate. Once the car is connected to a specific fob, it only accepts signals from the device. Other fobs will not work with the car, even if they appear like. This helps to protect the integrity of the car's computer system and prevent unauthorised key fobs from taking control over the vehicle. Most newer car dealers will only work on cars with original fobs or genuine replacements sold by the manufacturer. This is because preparing an appropriate replacement fob requires technical and security knowledge that is only available in the dealer's service department. However, some fobs from the aftermarket — usually those for older models that have less sophisticated systems — can be programmed by the consumer without the need for dealers.