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How to Program Keys For Cars Locksmiths or automotive specialists are usually the ones who reprogram keys for cars. They can take your old working key and use a specific tool to program a new one for your car. This involves changing the chip inside the replacement key so that it matches the current settings of your vehicle. Some manufacturers make it easy, while other require the assistance of a locksmith or dealer. Self-Programming As the technology of cars has advanced over time, the ignition keys have evolved as well. There are no more simple mechanical-only keys that could be manufactured at an hardware store for less than $10. Modern models come with computers that offer improved security against theft. To function correctly, these vehicles require that a transponder chip-integrated key be programmed to the vehicle by a certified locksmith or mechanic/car dealer. There are several types of car key programming that can be accomplished by locksmiths who are professionals. Some are very complex and require sophisticated tools. These tools aren't usually accessible to the general public and are used only by professionals. This kind of programming for car keys is known as EEPROM Programming and requires soldering, electronic knowledge and a lot of time. Other types of key programming can be carried out by anyone. They can be done by using the onboard diagnosis port, which can be accessed by a specific tool for key-fob programming. A locksmith can perform this procedure with the help of an online guide as well as the owner's manual. Most professional locksmiths can program a new or replacement car key fob swiftly and accurately. This is the best option for car owners since they can provide a complete range of services. They can offer a competitive rate and the assurance that the replacement key is going to function. Be aware that most vehicles can only accept a single programmed car key. So, if you're looking to save money, it could be better to purchase a working spare key fob, and have it programmed by an auto locksmith. You can be assured that the new key will work and is programmable for your vehicle. Otherwise, you will need to pay the dealer for replacement keys and programming services. Key Programmers Modern automobiles require a key-programming process to set up their systems and start the car. In a number of cases keys must be set up by the auto locksmith or dealer. This is because the key could not function correctly, or it will not start the car in any way. This is because the key hasn't yet been programmed into the vehicle's system. This can be expensive. This is why it's a good idea to always have two keys working for a modern car and to have the replacement key programmed if necessary. A keyprogrammer is a tool which can reprogram the transponder chip on a new mechanical or key fob key. It is also able to clone data of an existing key, allowing duplicates to be created. These are handheld devices that connect to a car's On Board Diagnostics (OBD port). They have diagnostic software that allows them to communicate with the computer and also provide a bidirectional interface for working with the immobilizer system. There are many different types of keyprogrammers available on the market and they come in a variety of sizes and shapes. Certain keyprogrammers are affordable and others could cost thousands of dollars. Some are made for specific automobiles and offer advanced diagnostics of the vehicle's electronic system. If you're interested in programming a new key to your vehicle, consult the owner's manual to find out how. Certain manufacturers have proprietary technology that makes sure that the dealership is the only entity that can make new keys, however other manufacturers make it easy for anyone to accomplish it themselves. If you're unable to program a new key by yourself, you can ask the dealership to do it for you, however this can be expensive. Another option is to purchase a keyprogrammer online. They are less expensive than visiting a dealer, but still not expensive. Before buying one do some research on the seller. Some are not reliable and could cause damage to your vehicle. Transponder Chips If your car was manufactured within the past 20 years, then it contains a transponder chip within of it. It's a tiny plastic thing in the head of your key that contains an RFID (Radio Frequency Identification) chip with a unique code for the specific vehicle you own. The chip sends out a low-level radio signal when it is activated by an electromagnetic field. This signal is then received by a specific antenna that is attached to the ignition barrel. This allows the car's computer system to determine if the transponder chip that is in the key is the correct one for your particular car. This is what stops hot-wiring or tampering with the ignition system of your vehicle to turn it on. The chip in the car key ensures that the owner is the person who owns the vehicle. This can reduce car theft. Regular transponder keys are shaped like regular keys, but with an outer layer of plastic. The chip is located inside the plastic portion of the keys. There are various cuts such as a standard cut laser cut (also known as a sidewinder or Ford Tibbe), and Ford Tibbe. A circuit within the induction coil emits signals when the transponder is put into the ignition barrel. The signal will then get absorbed by the chip, causing it to send a signal back to the car. If the computer inside the car is able to recognize the signal as being correct it will turn off the vehicle immobilizer, allowing the engine to start. If the vehicle doesn't recognize the transponder signal as the correct one, it will keep the engine from starting and will alert you by flashing its lights and sounding an alarm. This feature is designed to discourage people from trying to alter the vehicle, but it is not a foolproof security measure. A skilled and determined thief could still evade this system by using a specific device that blocks the signal. You can see that the transponder is a good option. This is something that all vehicle owners should consider if want to safeguard their investment and decrease the risk of theft. Key Fobs Key fobs today can be more than just a way to lock and unlock doors. They can also start the vehicle from a distance, make chirping sounds to help locate the car, or switch on the heated steering wheel. A lot of these features might seem useful but they could make it difficult for you to keep track of your car keys. Key fobs utilize radio frequencies to connect with one another and the car. The frequencies are transmitted via a small antenna that is located in the middle of the key. This signal is encrypted to stop others from intercepting or replicating the signal. There are a few different ways to program a key fob, based on the vehicle's model and make. You can sometimes do this yourself, but the majority of newer cars require that you visit a dealer or professional locksmith to program a replacement or additional fob. When you hit the button on a key fob it transmits an informational code to the car's receiver it is linked to. The receiver compared the information with the permitted signals stored in the key fob, and then it opens or closes the car door. If the data does not match the fob's information, the car won't be allowed to run. Once the car is linked with a specific fob, it will only receive signals from the device that is associated with it. Other fobs will not work with the car, even though they appear similar. This ensures the security of the computer system that runs the car and blocks the use of unauthorized key fobs to gain control over it. Most dealerships with newer cars will only work with vehicles that have original fobs or genuine replacements offered by the manufacturer. This is because the process of creating a replacement fob requires technological and security skills which can only be obtained in the dealer service department. However, some fobs from the aftermarket typically for older models with less sophisticated systems can be programmed by customers without the need for an authorized dealer.