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How to Program Keys For Cars Typically, car key reprogramming is the responsibility of a locksmith or an automotive specialist. They can take your old working key and use a specific tool to program a new key for your car. The process involves reprogramming the blank chip inside your replacement key to match the current settings of your vehicle. Some manufacturers make it simple for you, while others require an expert locksmith or dealer. Self-programming The ignition keys have developed as has the technology of cars. Gone are the days of simple mechanical-only keys that could be manufactured at an hardware store for less than $10. The latest models come with computers that have improved anti-theft security. To function correctly, these vehicles require a transponder chip-integrated key be programmed into the vehicle by a certified locksmith or car dealer/mechanic. There are several types of car key programming that can be done by professional locksmiths. Some are very complex and may require sophisticated tools. These tools are not available to the general public and are only used by professionals. This type of key programming is called EEPROM Programming. It requires soldering skills, electronic knowledge and a lot of time. Other forms of programming for car keys are much easier and can be accomplished by the average person. These are done using the onboard diagnosis port, which can be accessed by a specific tool for key-fob programming. Locksmiths can execute this method with the assistance of an online guide as well as the owner's manual. Professional locksmiths are able to program a new or replacement car key fob in a short time. This is the best choice for vehicle owners as they are able to provide a wide range of services. They can provide a competitive rate and the assurance that the replacement key will continue to work. Remember that most automobiles only accept one programmed car key. So, if you're looking to save money, it may be a better idea to purchase a working spare key fob and then have it programmed by an auto locksmith. This way, you can be sure that the new key is programmed to your car and will function. You'll have to pay the dealer for programming and replacement keys if you do not. Key Programmers Modern automobiles require a key-programming process to set up their systems and then start the vehicle. In some instances the key needs to be set up by the auto locksmith or dealer. The key might not function correctly or will not start the vehicle in any way. The reason for this is that the new key has not been programmed to the automobile's system – and this can be very costly. This is why it's a good idea to have two keys working for a modern car, so you can get the replacement key programmed if required. A keyprogrammer can reprogram the transponder chip of an entirely new mechanical key or key fob. It is also able to copy information from an existing key in order to create duplicates. These devices are handheld units that connect to the car's On-Board Diagnostics (OBD) port. They are equipped with diagnostic software that enables them to communicate with computers as well as bidirectional interfaces to work with the immobilizer system. There are a variety of keyprogrammers that are available on the market. They come in all sizes, shapes and colors. Certain keyprogrammers are affordable while others can cost thousands of dollar. Certain are designed for specific automobiles and offer advanced diagnostics of the vehicle's electronic system. Consult your owner's guide to learn how to program the key to your vehicle. Certain manufacturers employ proprietary technology that ensures the dealership is the sole entity able to create new keys, but other manufacturers make it fairly easy for anyone to accomplish it themselves. If you are unable to program the new key yourself, then you can request your dealer to do it, but it will cost you a lot. You can also purchase an online keyprogrammer. These are less expensive than going to a dealer however, they're not cheap. Make sure you investigate the seller prior to purchasing one. Some aren't reliable and could damage your vehicle. Transponder Chips Transponder chips are likely be found in vehicles manufactured within the last 20 years. It's the tiny plastic piece in the head of your car key that houses an RFID (Radio Frequency ID) chip with a code unique to the vehicle you own. The chip emits an unintentional radio signal when it is activated by an electromagnetic field. This signal then gets absorbed by the special antenna that is fitted around the barrel that controls your ignition in your car. This allows the computer in your vehicle system to verify that the transponder chip that is in the key is the right one for your specific vehicle. This is the reason why from modifying or hot-wiring the vehicle's ignition system to get it started. The chip in the key also proves that you are the legal owner of the vehicle. This can help to reduce the possibility of theft from your vehicle. Transponder keys resemble regular metal keys, but with caps made of plastic. The chip is contained in the plastic portion of the key and there are different types of cuts on these keys: a regular standard cut, a laser cut (also called a sidewinder key) or Ford Tibbe key. When the transponder key is inserted in the ignition barrel, a circuit within of the induction coil will send out the signal. The signal will be taken up by the chip and cause it to transmit a signal back to the car. If the computer in the car recognizes the signal as correct, it will disable vehicle immobilizer, allowing the engine to start. If the car does not recognize the transponder signal as being the correct one, it will keep the engine from running and will alert you by flashing its lights and sounding an alarm. This feature is intended to discourage people from trying to tamper with the vehicle, but it is not a foolproof security measure. 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 few advantages to getting a transponder key. All car owners should consider this in order to safeguard 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 chirping sounds to help find the car in a parking lot Key fobs today can also activate the heated steering wheel or roll down all of the windows with just a single press. Many of these extra features may appear convenient, but they can also make it harder for you to keep track of your car keys. Key fobs use radio frequencies to communicate with each other and the car. These frequencies are sent by a small antenna within the middle of the key. This communication is encrypted to block other key fobs from stealing or stealing the signal. There are a few different ways to program a key fob, based on your vehicle's model and make. Certain models allow you to do this by yourself. However, the majority of modern models require you to visit an expert locksmith or dealer for them program a replacement key fob, or an alternative one. When you press the button on a key fob, the microchip sends an indication to the receiver inside the vehicle that it is paired. The receiver compares this information to the 'allowed' signals stored inside the fob, and either opens or locks the door. If the information does not match the signals, the car will not be allowed to operate. Once the car is paired with a specific fob it will only receive signals from that specific device. This means that other fobs won't work with the vehicle even though they look the same. This is to safeguard the integrity of the vehicle's computer system, and also to stop the use of unauthorized key fobs to gain control of the vehicle. The majority of newer dealers will only work on cars with original fobs or genuine replacements that are supplied by the manufacturer. This is because preparing an appropriate replacement fob requires technical and security expertise which can only be obtained in the dealer's service department. However, some aftermarket fobs — usually those for older models with less sophisticated systems can be programmed by consumers without the need for an authorized dealer.