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How to Program Keys For Cars Automotive specialists or locksmiths are usually the ones who reprogram car keys. They will use a special software to program the new key by using your previous one. The procedure involves reprogramming the blank chip inside the replacement key to match the current settings of your vehicle. Certain manufacturers make this simple but others require a dealer or locksmith. Self-programming The ignition keys have changed as has the technology of cars. The days of simple mechanical keys that you could purchase from a hardware store for less than $10 are gone. Newer models are equipped with computers that offer improved anti-theft protection. In order to work properly, these cars require that a transponder chip key be programmed into the vehicle by a professional locksmith or a car dealer/mechanic. Professional locksmiths can perform various kinds of programming for car keys. Some are very complex and may require sophisticated tools. These tools are usually not accessible to the general public and are used only by professionals. This kind of key programming is called EEPROM Programming. It requires the ability to solder, electronic skills and a lot time. Other types of key programming can be carried out by anyone. They can be done by with the onboard diagnostic port, which can be accessed by a specific tool for key-fob programming. This procedure can be carried out by a locksmith who is trained with the help of an online guide or the vehicle's owner's manual. Professional locksmiths are able to program a new or replacement car key fob quickly. This is the best choice for car owners since they are able to provide a full range of services. They can provide a reasonable price and security of knowing that the replacement key is going to work. Be aware that most vehicles can only accept a single programmed car key. So, if you're looking to save money, it might be a better idea to purchase a working spare key fob and have it programmed by an auto locksmith. You can be assured that the new key will function and is programmed for your car. You'll need to pay the dealer for programming and replacement keys if you don't. Key Programmers Modern vehicles require a key-programming method 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. This is because the key might not function properly or start the car at all. This is because the key hasn't yet been programmed into the vehicle's system. This can be costly. It is best to have two keys that are compatible with your current car so you can program the replacement key if needed. A keyprogrammer can reprogram the transponder chip on the new mechanical key or key fob. It can also clone information from an existing key in order to create duplicates. These are handheld devices that connect to the car's On-Board Diagnostics (OBD) port. They come with diagnostic software that enables them to communicate with the computer as well as a bidirectional interface for working with the 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 are inexpensive, while others are very sophisticated and could cost thousands of dollars. Certain models are specifically designed for automobiles and provide advanced diagnostics of the car's electronic system. If you're interested in programming the new key into your vehicle, check the owner's manual to find out how to do it. Certain manufacturers have proprietary software that only permits the dealership to make new keys. Other manufacturers make it easy for anyone to do. If you are unable to program the new key by yourself and you are unable to do it, then have your dealer do it, but it will cost you a lot. Another option is to buy an online keyprogrammer. They're less expensive than visiting a dealership, but they're still not cheap. Make sure you look up the seller before buying one – some are not reliable and could damage your vehicle. Transponder Chips If your car was built within the last 20 years, chances are it has a transponder inside of it. It's a small plastic thing 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 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 barrel that controls your ignition in your car. This allows the computer in your vehicle system to confirm that the transponder chip that is in the key is the right one for your specific vehicle. This is the reason why doing hot-wiring or altering the ignition system of the vehicle to get it started. The chip inside the key also confirms that you are the legitimate owner of the vehicle. This will help reduce the possibility of theft from your vehicle. Transponder keys appear like regular metal keys but they have caps made of plastic. The chip is inside the plastic portion of these keys. There are various cuts: a standard cut, Laser cut (also called a sidewinder or Ford Tibbe), and a Ford Tibbe. The circuit in the induction coil emits signals when the transponder is inserted into ignition barrel. The signal is taken up by the chip, which then transmits a signal to the vehicle. If the car's computer detects this signal as the correct one, it will turn off the immobilizer on the vehicle and allow the engine to start. If the vehicle doesn't recognize the transponder signal as the right one, it will keep the engine from starting and will notify you by flashing its lights and sounding an alarm. This system is designed to deter individuals from tampering with the vehicle. However, it is not an unbreakable security measure. A skilled and determined criminal might be able get around this system using a device that can intercept the signal. It is evident that the transponder is an excellent option. This is something that all car owners should consider if they want to safeguard their investment and minimize the chance 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. These extra features could make it difficult to locate your car keys. Key fobs are able to communicate with each other and the car using radio frequencies that are transmitted through a small antenna located in the center of the key. This communication is encrypted, which helps prevent others from intercepting and re-transmitting the signal. There are several ways to program a key fob, based on the make and model. Some cars allow you to do this by yourself. However, the majority of modern models require you to visit a professional locksmith or dealer to program a replacement key fob or an additional one. When you press the button on a key fob, the microchip sends a signal to the receiver in the vehicle that it is paired. programming car key compared the information with the 'allowed signals' that are stored in the key fob and then it opens or closes the car's doors. If the information isn't in line an chirping sound is heard and the car isn't permitted to operate. Once the car is paired with a specific fob it will only receive signals from that specific device. Other fobs will not work with the car, even though they look like. This safeguards the integrity of the computer system in the vehicle and stops unauthorized key fobs gaining control of it. Most dealerships with newer cars will only work with cars that have original fobs, or genuine replacements sold by the manufacturer. This is due to the fact that preparing the replacement fob is a process that requires technological and security knowledge that is only available in the dealer's service department. However, some fobs from the aftermarket that are typically designed for older models with less sophisticated systems — can be programmed by the consumer without the need for an authorized dealer.