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How to Program Keys For Cars Typically, re programming car keys is the work of a locksmith or an automotive specialist. They can use a special program to program your new key by using your previous one. The procedure involves reprogramming your chip in your replacement key to match the current settings of your vehicle. Certain manufacturers make this simple but others require a dealer or locksmith. Self-Programming As car technology has evolved throughout the years, ignition keys have evolved too. Gone are the days of simple mechanical-only keys that could be manufactured at a hardware store for under $10. The newer models have computer systems that are more secure against theft. To function properly, these cars require that a transponder chip key be programmed into the vehicle by a certified locksmith or car dealer/mechanic. There are several kinds of car key programming that can be done by professional locksmiths. Some are extremely complicated and may require sophisticated tools. These tools aren't generally available to the public and are only used by professionals. This kind of car key programming is known as EEPROM Programming and requires soldering, electronic knowledge and a lot of time. Other forms of car key programming are a lot simpler and can be performed by anyone who is able to. They are typically accomplished by using the diagnostics port on the car, which can be accessed with an instrument for programming keys. This method can be done by a professional locksmith using an online guide or the car's owner manual. Professional locksmiths are able to program a replacement or new 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 also offer a competitive price and peace of mind that the new key will work correctly. Remember that most vehicles only accept one programmed car key. If you're looking to save money, it's a good idea to purchase a spare key fob that is functional and then have it programmed. You can be assured that the new key will function and is compatible with your car. You'll have to pay the dealer for programming and replacement keys if you don't. Key Programmers Modern cars require a key-programming process to start the vehicle's system and to start the car. In some instances, the key will need to be programmed by an auto locksmith or a dealer. The key may not work properly or it may not even start the car at all. This is because the key hasn't yet been programmed into the car's system. This could be costly. It is recommended to have two keys that work with your current car so you can program the replacement key if needed. A keyprogrammer is a device that can recode the transponder chip into an entirely new mechanical or key fob key. It is also able to copy data from an existing key to create duplicates. These devices are handheld units that connect to the car's On-Board Diagnostics (OBD) port. They are equipped with diagnostic software that allows them to communicate with computers as well as bidirectional interfaces to work with the immobilizer system. There are a variety of keyprogrammers on the market. They come in all sizes, shapes, and colors. Some are cheap, while others are very advanced and could cost thousands of dollars. Certain models are specifically designed for certain types of vehicles, and they can even provide advanced diagnostics for the car's electronic systems. Check out the owner's manual to learn how to program the key to your vehicle. Certain manufacturers have proprietary software that only allows the dealership to create new keys. Other manufacturers make it simple for anyone to do. If you're not able to program a new key yourself or request the dealer to program it for you, but this can be expensive. You can also buy a keyprogrammer on the internet. These are cheaper than going to the dealership however, they're not cheap. Before purchasing one make sure you research the seller. Some aren't trustworthy and may damage your vehicle. Transponder Chips If your car was manufactured in the past 20 years, it is likely that it has a transponder inside of it. It's a tiny plastic thing on the back of your key that houses an RFID (Radio Frequency Identification) chip with a unique code for the specific vehicle you own. The chip emits an low-level radio signal once it is activated by an electromagnetic field. The signal is absorbed by a special antenna attached to the barrel of ignition. This allows the computer in your vehicle system to verify that the transponder chip in the key is the correct one for the car you have. This stops the vehicle from starting by hot-wiring or manipulating. The chip inside the key also confirms that you are the legitimate owner of the vehicle. This can reduce car theft. Regular transponder keys are designed like regular metal keys with an outer layer of plastic. The chip is housed inside the plastic portion of the key and there are different types of cuts on these keys: a standard cut, a laser cut (also called a sidewinder), or a Ford Tibbe key. When the transponder key is placed in the ignition barrel, a circuit inside of the induction coil sends out an electrical signal. The signal is absorbed by the chip, which then transmits a signal the vehicle. If the onboard car computer recognizes this signal as the right one, it will disable the immobilizer on the vehicle and allow the engine to start. If the vehicle does not recognize the transponder signal as being the right one, it will prevent the engine from running and will notify you by flashing its lights and sounding a siren. This system is designed to deter people from tampering with the vehicle. However it's not a foolproof measure of security. A skilled and skilled criminal could still evade this system with a specially designed device that detects the signal. As you can see there are quite a few advantages to getting transponder keys. This is something that all vehicle owners should consider if they want to safeguard their investment and decrease the chance of theft. 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 lot, today's key fobs can also turn on a heated steering wheel, or roll down all windows with a single button push. A lot of these features may appear convenient, but they can also make it difficult for you to keep the track of your car keys. Key fobs communicate with one other and with the car through radio frequencies which are transmitted by a small antenna located in the center of the key. The communication is encrypted, which helps to prevent others from intercepting and replicating the signal. You can program a keyfob in a variety of ways depending on the model and brand of your vehicle. It is possible to do this yourself, however most modern cars require that you visit an expert locksmith or dealer to program a replacement or additional fob. When you press the button on a key fob the microchip sends signals to the receiver inside the vehicle that it is paired. The receiver then compares the data with the permitted signals stored in the key fob and then opens or locks the car's door. If the information isn't in line the signals, a chirping sound can be heard and the car isn't able to operate. When a car is connected with a specific fob it will only receive signals from that specific device. This means that other fobs won't work with the vehicle, even though they have the same appearance. This helps to protect the integrity of the car's computer system, and also to stop unauthorised key fobs from taking control over the vehicle. Most newer car dealers will only work on cars with original fobs or genuine replacements that are sold by the manufacturer. This is because the process of creating an appropriate replacement fob requires technical and security expertise that is only available in the dealer's service department. Certain aftermarket fobs, typically ones for older models that have less advanced systems can be programmed with out the need for a dealer.