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How to Program Keys For Cars Automotive specialists or locksmiths are usually the ones who re-program keys to cars. They can take your old working key and then use a special tool to program a new key for your car. The process involves reprogramming the blank chip inside the replacement key to fit the current settings of your vehicle. Some manufacturers make it simple, while other require an expert locksmith or dealer. Self-Programming As the technology of cars has advanced over the years, the ignition keys have developed too. The days of simple mechanical-only keys that could be made at a hardware store for under $10. The latest models come with computers with improved anti-theft protection. To function properly, these cars require that a transponder chip-integrated key be programmed into the vehicle by a professional locksmith or car dealer/mechanic. Professional locksmiths can carry out various kinds of programming for keys for cars. Certain types are more complex and require advanced tools. These tools aren't generally accessible to the general public and are utilized only by professionals. This kind of car key programming is referred to as EEPROM Programming and requires soldering, electronic skills and a lot of time. Other types of key programming can be done by anyone. These are usually done by using the onboard diagnostics port that can be accessed using the key-fob-programming device. This method can be performed by a trained locksmith using an online guide or an owner manual. Professional locksmiths can program a replacement or a brand new car key fob quickly. This is the ideal option for owners of vehicles as they can offer a full range of services. They also provide a competitive price and ensure that the replacement key will work properly. It is important to keep in mind that many vehicles will only accept one key that has been programmed for their system. If you want to save some money, it's a good idea to purchase a spare key fob that works and then have it programmed. This way, you can be certain that the new key is programmed to your vehicle and will function. If not, you'll have to pay the dealership for replacement keys and programming services. Key Programmers Modern automobiles require a key-programming method to initialize their vehicle's systems and start the car. In some instances, the key must be set up by the dealer or auto locksmith. The key might not function correctly or will not start the vehicle in any way. This is because the key hasn't yet been programmed into the car's system. This could be costly. This is why it's a good idea to always have two keys that work for modern vehicles and have the replacement key programmed if necessary. Keyprogrammers are devices that recodes the transponder chip on an entirely new key fob or mechanical key. It can also clone the data of an existing key to make duplicates. These devices are handheld units that connect to the car's On-Board Diagnostics (OBD) port. They are equipped with diagnostic software, which allows them to communicate with computers. They also feature a bidirectional user interface that works with an immobilizer system. There are a variety of keyprogrammers on the market. They are available in a variety of shapes, sizes and colors. Some are inexpensive, while others are very sophisticated and could cost thousands of dollars. Certain models are specifically designed for automobiles and offer advanced diagnostics of the car's electronic system. Refer to the owner's manual of your vehicle to learn how to program the key to your vehicle. Some manufacturers use proprietary technology that ensures the dealership is the sole entity that can make new keys. However, other manufacturers make it easy for anyone to do it themselves. If you are unable to program the new key yourself and you are unable to do it, then ask your dealer to do it, but it will cost a lot. You can also buy an online keyprogrammer. They are cheaper than visiting a dealer, but still not expensive. Before purchasing one make sure you research the seller. Some aren't reliable and may damage your vehicle. Transponder Chips Transponder chips are likely be found in cars that were manufactured within the past 20 years. This is a little plastic thing in the head of your key that contains an RFID (Radio Frequency Identification) chip with a unique code for your specific vehicle. The chip sends out an unintentional radio signal when it is activated by an electromagnetic field. This signal then gets taken up by the antenna that is positioned around the ignition barrel of your vehicle. The computer system in the vehicle will then confirm that the key's transponder chip is the right one for your car. This prevents the vehicle from being started by hot-wiring, or by manipulating. The chip in the key also proves that you are the genuine owner of the vehicle. This can reduce car theft. Transponder keys that are regular in shape like regular metal keys with a plastic top. The chip is housed inside the plastic portion of the key and there are different kinds of cuts available on the keys: a cut, a laser cut (also called a sidewinder key) or Ford Tibbe key. A circuit within the induction coil will emit an electrical signal when the transponder is put into an ignition barrel. The signal is absorbed by the chip, which then transmits a signal to the vehicle. If the onboard car computer recognizes this signal as being the right one, it will disable the vehicle's immobilizer and allow the engine to start. If the vehicle doesn't recognize the transponder as a valid signal, it will not start the engine, and will notify you via flashing lights and siren. This function 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. It is evident that the transponder is an excellent option. All car owners must take this into consideration in order to safeguard their investment and reduce 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 your car remotely, emit chirping sounds to help locate cars, or switch on the heated steering wheel. These extra features could make it difficult to find your car keys. Key fobs make use of radio frequencies to communicate with one another and the car. These frequencies are transmitted through a small antenna located within the middle of the key. This signal is encrypted to prevent others from stealing or stealing the signal. There are a few different ways to program a key fob based on the make and model. You can sometimes do this yourself, but most newer vehicles require a dealer or professional locksmith to program a replacement or additional fob. When you press the button on your key fob the microchip inside sends a code to the car's radio that it is paired with. The receiver then compares the data with the 'allowed signals' stored in the key fob, and then locks or opens the car's door. If the data does not match the signals, the car will not be allowed to operate. Once the car has been paired with a specific fob, it can only receive signals from the device. Other fobs will not work with the car, even if they appear similar. This safeguards the integrity of the computer system in the vehicle and stops unauthorised key fobs from taking control of it. Most dealerships with newer cars will only accept vehicles that have original fobs or genuine replacements supplied by the manufacturer. The reason for this is that the only place with the experience to design the replacement fob is the service department of a dealer. 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 of dealers.