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How to Program Keys For Cars Typically, reprogramming car keys is the job of a locksmith specialist. They can make use of a specific software to program the new key with your old one. This involves reprogramming a blank chip in your replacement key to ensure that it is compatible with the current settings of your vehicle. Certain manufacturers make it simple, while other require a locksmith or dealer. Self-programming The ignition keys have changed along with the car technology. Gone are the days of simple mechanical keys that were made at a hardware store for under $10. Modern models come with computers that are enhanced anti-theft protection. These cars require a transponder-chip integrated key to be programmed by a professional locksmith, car dealer or mechanic to function properly. There are a few different types of car keys programming that can be done by professional locksmiths. Some are very complex and may require sophisticated tools. These tools aren't generally accessible to the general public and are used only by professionals. This kind of programming is known as EEPROM Programming. It requires the ability to solder, electronic skills and a significant amount of time. Other kinds of key programming can be performed by anyone. They are accomplished using the onboard diagnostic port, which can be accessed via a tool specifically designed for key-fob programming. This method can be performed by a professional locksmith using an online guide or an owner's manual. Professional locksmiths are able to program a replacement or a brand new car key fob quickly. This is the best option for owners of vehicles as they are able to provide a wide range of services. They can offer a competitive cost and peace of mind knowing that the replacement key will continue to function. Be aware that most vehicles can only accept a single programmed car key. If you're trying to save money, it could be a better idea purchase a working spare key fob and then have it programmed by an auto locksmith. You can be certain that the new key will work and is compatible with your car. You'll need to pay the dealer for programming and replacement keys if you don't. Key Programmers Modern cars require a key-programming procedure to start the vehicle's system and start the car. In many cases, the key must be programmed by the dealer or auto locksmith. The key may not work 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 great idea to have two keys that work for a modern automobile, so you can get the replacement key programmed when necessary. Keyprogrammers can recode the transponder chip on an entirely new mechanical key or key fob. It can also clone information from an existing key to make duplicates. These are handheld devices connected to a car's On Board Diagnostics (OBD port). They come with diagnostic software, which allows them to communicate with a computer. They also have a bidirectional interface to work with an immobilizer system. There are a number of different kinds of keyprogrammers that are available and they come in a variety of shapes and sizes. Some keyprogrammers are cheap and others can cost thousands of dollar. Some are designed for specific kinds of vehicles, and they can even offer advanced diagnostics for the vehicle's electronic systems. If you're looking to program an entirely new key for your vehicle, check the owner's manual to find out how to do it. 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 accomplish it themselves. If you are unable to program the new key by yourself, then you can have your dealer do it, but it will cost a lot. Another option is to buy a keyprogrammer online. They are less expensive than visiting a dealer but they aren't expensive. Before buying one, do some research on the seller. Some aren't reliable and could cause damage to your vehicle. Transponder Chips Transponder chips can be found in cars that were manufactured within the past 20 years. It's a tiny piece of plastic on the back of your key which contains an RFID (Radio Frequency Identification) chip with a unique code that is specific to the specific vehicle you own. When it is activated by an electro-magnetic field the chip emits a low-frequency signal. The signal is absorbed by a special antenna that is attached to the barrel of ignition. The computer system in the vehicle can then verify that the transponder chip of the key is the right one for your car. This stops the vehicle from being started by either hot-wiring or by manipulating. The chip inside the car key verifies that the owner is the person who owns the vehicle. This helps to prevent car theft. Transponder keys look like regular keys made of metal but have caps made of plastic. The chip is housed in the plastic portion of the key, and there are a few different types of cuts on these keys: a cut laser cut (also called a sidewinder key), or a Ford Tibbe key. When car key programmers is inserted in the ignition barrel, a circuit within of the induction coil sends out an electrical signal. The signal is absorbed by the chip, which sends a signal to the vehicle. If the computer inside the car is able to recognize the signal as valid it will turn off the car immobilizer to allow the engine start. If the vehicle doesn't recognize the transponder as a valid signal, it will not start the engine and alert you with flashing lights and an alarm. This system is designed to deter individuals from tampering with the vehicle. However it's not an absolute security measure. A skilled and determined thief could still evade this system with a specially designed device that detects the signal. As you can see there are quite a number of benefits to having a transponder key. All car owners should take this into consideration in order to safeguard their investment and minimize the chance of theft. Key Fobs Key fobs today can offer more than locking and unlock doors. They can also start your car remotely, emit chirping sounds to aid in finding cars, or turn on the heated steering wheel. Many of these extra features may appear convenient however they could make it more difficult to keep the track of your car keys. Key fobs communicate with each with the car via radio frequencies that are transmitted by a small antenna located in the middle of the key. This communication is encrypted, which helps to prevent others from intercepting and re-transmitting the signal. Keyfobs can be programmed in a variety of ways depending on the model and brand of your vehicle. Some cars allow you to do this by yourself. However, most newer models require you to visit a professional locksmith or dealer to program a replacement key fob, or an alternative one. When you press a key fob's button the microchip inside sends a code to the car's radio that it is linked to. The receiver then compares this information to the 'allowed' signals stored in the fob and then either locks or opens the door. If the data doesn't match the signals, a chirping sound can be heard and the car isn't permitted to operate. Once the car is paired with a specific fob, it only accepts signals from that device. As a result, other fobs won't work with the vehicle even if they look the same. This helps to protect the integrity of the car's computer system, and also to stop unauthorized key fobs from gaining control over the vehicle. The majority of newer dealerships will only work with cars that have original fobs, or genuine replacements offered by the manufacturer. This is because the only place that has the experience to design an appropriate replacement fob is the service department of the dealer. However, some fobs from the aftermarket that are typically designed for older models with less sophisticated systems — can be programmed by customers without the need of a dealership.