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How to Program Keys For Cars Typically, reprogramming car keys is the responsibility of a locksmith or automotive specialist. They can take your old working key and use a special tool to program a brand new one for your vehicle. This involves changing the chip inside the replacement key so that it matches the current settings of your vehicle. Some manufacturers make this easy, while others require a dealer or locksmith. Self-programming As the technology of cars has advanced over time, the ignition keys have developed as well. The days of simple mechanical keys that were made at an hardware store for less than $10. The latest models are equipped with computer systems that are more secure against theft. These cars require a transponder-chip-integrated key to be programmed by a professional locksmith, mechanic or dealer to function properly. Professional locksmiths can carry out various types of programming for keys to cars. Some are extremely complicated and require sophisticated tools. These tools aren't usually available to the public and are used only by professionals. This type of programming is referred to as EEPROM Programming. It requires the ability to solder, electronic skills and a significant amount of time. Other types of car key programming are much simpler and can be accomplished by the average person. These are usually done by using the onboard diagnostics port, that can be accessed using an instrument for programming keys. This procedure can be carried out by a trained locksmith using an online guide or the car's owner manual. Professional locksmiths can program a replacement or a brand new car key fob in a short time. This is the best option for car owners since they can provide a complete range of services. They can also offer an affordable cost and assurance that the replacement key will function properly. It is important to note that many vehicles will only accept a single key for their system. If you're looking to save money, it's a good idea to get an extra key fob that is functional and have it programmed. This way, you will be certain that the new key is programmed for your vehicle and that it works. You will have to pay the dealer for programming and replacement keys if they don't. Key Programmers Modern cars often require a key programming procedure to initialize the vehicle's system and allow the vehicle to start. In some cases the key will have to be programmed by an auto locksmith or dealer. This is because the key may not work properly or start the car at all. This is because the key has not yet been programmed into the vehicle's system. This can be costly. This is why it's a great idea to always have two keys that work for modern vehicles, so you can get the replacement key programmed if required. A keyprogrammer is a tool that recodes the transponder chip on an entirely new mechanical or key fob key. It also can clone the data of an existing key in order to create duplicates. These are handheld devices connected to a car's On Board Diagnostics (OBD port). They are equipped with diagnostic software that allows them to communicate with a computer. They also feature a bidirectional user interface for working with an immobilizer system. There are a myriad of types of keyprogrammers on the market. They are available in a variety of shapes, sizes and colors. Some keyprogrammers are cheap while others could cost thousands of dollars. Some are specifically designed for certain types of vehicles, and they can even offer advanced diagnostics for the vehicle's electronic systems. If you're interested in programming an entirely new key for your vehicle, consult the owner's manual for instructions on how. Some manufacturers use proprietary technology that ensures the dealership is the sole entity that can create new keys. However, other manufacturers make it easy for anyone to accomplish it on their own. If you're not able to program a new key on your own or request the dealer to do it for you, however it will cost a lot. Another option is to purchase an online keyprogrammer. These are less expensive than going to the dealership, but they're still expensive. Make sure you investigate the seller prior to purchasing one – some are not reliable and can damage your vehicle. Transponder Chips Transponder chips are likely be found in vehicles manufactured in the last 20 years. It's a tiny piece of plastic on the back of your key that houses a RFID (Radio Frequency Identification) chip with a unique code for your particular vehicle. The chip sends out a low-level radio signal when it is activated by an electromagnetic field. The signal is then taken up by an antenna that is attached to the ignition barrel. This allows the vehicle's computer system to verify that the transponder chip that is in the key is the correct one for your specific vehicle. This prevents the vehicle from being started through either hot-wiring or by tampering. The chip inside the car key verifies that the owner is the one who owns the vehicle. This will help reduce car theft. Regular transponder keys are shaped like regular keys and have an outer layer of plastic. The chip is housed in the plastic portion of the key, and there are different cuts that can be found on these keys: a cut laser cut (also known as a sidewinder key) or Ford Tibbe key. When the transponder key is inserted into the ignition barrel, a circuit within of the induction coil sends out an electrical signal. The signal will then get taken up by the chip and cause it to send a signal back to the car. If the computer in the car recognizes the signal as correct it will turn off the car immobilizer, allowing the engine to start. If how to reprogram car key does not recognize the transponder signal as being the correct one, it will stop the engine from starting and will alert you by flashing its lights and sounding a siren. This function is designed to discourage those who would attempt to alter the vehicle. However it's not an absolute security measure. A skilled and determined thief can still get around this system by using a specific device that intercepts the signal. You can see that the transponder is an excellent option. Every car owner should take this into consideration if they wish to protect their investment and decrease theft risk. Key Fobs In addition to locking and unlocking doors, starting the car remotely or making noises to aid in finding a car in a parking space, today's key fobs can also activate a heated steering wheel or roll down all windows with a single press. These extra features could make it difficult to find your car keys. Key fobs communicate with each other and with the car through radio frequencies which are transmitted by an antenna that is located in the middle of the key. The signal is encrypted to prevent others from stealing or modifying the signal. You can program a keyfob in different ways based on the make and model of your car. Certain cars let you do this yourself. However, the majority of newer models require you to visit an expert locksmith or dealer to program a replacement key fob or an additional one. When you press a key fob's button the microchip inside sends a code to the car's receiver that it is linked to. The receiver compares the information with the 'allowed signals' stored on the key fob and then it opens or closes the car door. If the information doesn't match, a chirping sound is heard and the car isn't allowed to operate. Once the car is paired with a particular 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 identical. This ensures the security of the computer system that runs the vehicle and stops unauthorized key fobs gaining control over it. Most newer car dealers will only work on a car with original fobs or genuine replacements that are supplied by the manufacturer. This is because the only place with the expertise to prepare a replacement fob is in the service department of the dealer. Certain aftermarket fobs, typically those from older models with less advanced systems can be programmed without the need for a dealership.