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How to Program Keys For Cars Typically, reprogramming car keys is the job of a locksmith or automotive specialist. They can use a special program to program your new key with your old one. This involves changing the chip inside the replacement key so that it matches the current settings on your vehicle. Some manufacturers make it easy for you, while others require a locksmith or dealer. Self Programming The ignition keys have changed as has the technology of cars. The days of basic mechanical keys you could buy from the hardware shop for less than $10 are gone. Modern models come with computers that offer improved anti-theft protection. To function correctly, these vehicles require that a transponder chip key be programmed into the vehicle by a certified locksmith or car dealer/mechanic. Professional locksmiths are able to perform various kinds of programming for car keys. Certain types are more complex and require sophisticated tools. These tools are usually not available to the general public and are only used by professionals. This kind of car key programming is referred to as EEPROM Programming and requires soldering, electronic expertise and a significant amount of time. Other kinds of car key programming are much easier and can be done by the average person. They are typically accomplished by using the onboard diagnostics port, which can be accessed with a special key-fob-programming tool. This method can be done by a professional locksmith with the help of an online guide or the vehicle's owner manual. Professional locksmiths can program a replacement or new car key fob quickly. This is the most efficient option for car owners since they are able to provide a full range of services. They also can provide an affordable price and ensure that the new key will work properly. It is important to note that a lot of vehicles only accept one programmed key for their system. If you want to save money, it's a great idea to buy an extra key fob that works and then program it. This way, you can be certain that the new key has been programmed to your car and that it works. Otherwise, you will need to pay the dealership for replacement keys and programming services. Key Programmers Modern vehicles require a key-programming process to start the vehicle's system and start the car. In a number of cases, the key must be configured by the dealer or an auto locksmith. This is because the key may not function correctly, or it will not start the vehicle at all. This is because the key hasn't yet been programmed into the vehicle's system. This could be costly. It is recommended to have two keys that are compatible with your current car so you can program the replacement key whenever required. A keyprogrammer can reprogram the transponder chip of an entirely new mechanical key or key fob. It is also able to copy the data of an existing key which allows duplicate keys to be created. 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. They also have a bidirectional interface to work with an immobilizer system. There are many different kinds of keyprogrammers that are available and they come in all shapes and sizes. Certain keyprogrammers are affordable and others can cost thousands of dollar. Some are made for specific automobiles and offer advanced diagnostics of the car's electronic system. If you're looking to program an entirely new key for your vehicle, check the owner's manual for instructions on the procedure. Some manufacturers use proprietary technology that guarantees that the dealership is the only entity that can create new keys, however other manufacturers make it fairly easy for anyone to accomplish it on their own. If you are not able to program the new key by yourself and you are unable to do it, then ask your dealer to do it, but it will be very costly. Another option is to buy an online keyprogrammer. They're less expensive than going to a dealer however, they're not cheap. Before buying one make sure you research the seller. Some aren't trustworthy and could damage your vehicle. Transponder Chips Transponder chips can be found in cars that were manufactured within the last 20 years. It's the small plastic piece inside the head of your car key that houses an RFID (Radio Frequency ID) chip with a code unique to the vehicle you own. The chip emits a low-level radio signal when it is activated by an electromagnetic field. This signal is then received by a specific antenna that is attached to the barrel of ignition. 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 stops the vehicle from being started through hot-wiring, or by altering the key. The chip in the key also confirms that you are the genuine owner of the vehicle. This will help reduce the possibility of theft from your vehicle. Regular transponder keys are shaped like regular metal keys with an outer layer of plastic. The chip is contained in the plastic portion of the key, and there are a few different types of cuts on these keys: a regular standard cut, a laser cut (also called a sidewinder) or Ford Tibbe key. A circuit within the induction coil emits a signal when the transponder is put into an ignition barrel. The signal is received by the chip which then transmits a signal the vehicle. If the car's computer recognizes this signal as being the right one, it will shut down the vehicle's immobilizer and allow the engine to begin. If the car does not recognize the transponder signal as being the right one, it will stop the engine from running and will alert you by flashing its lights and sounding siren. This system is designed to deter those who would attempt to alter the vehicle. However it's not an absolute security measure. A skilled and determined criminal might be able get around this system using a device that can intercept the signal. As you can see, there are quite a number of advantages to having a transponder key. All car owners should take this into consideration in order to safeguard their investment and minimize theft risk. Key Fobs In addition to locking and unlocking doors, starting the car remotely, or making chirping sounds to help find a car in a parking space Key fobs today can also activate a heated steering wheel, or roll down all of the windows with just a single press. These additional features can make it difficult for you to locate your car keys. Key fobs use radio frequencies to communicate with one another and with the car. These frequencies are sent through a small antenna located in the middle of the key. The signal is encrypted to stop others from stealing or stealing the signal. There are a few different ways to program a key fob depending on the vehicle's model and make. You may be able to do it yourself, but most newer automobiles require a dealer or professional locksmith to program a replacement or an additional fob. When programing keys press the button on a key fob the microchip sends an indication to the receiver in the car that it is paired. The receiver compares this information with the 'allowed' signals in the fob and then either locks or opens the door. If the data does not match the fob's information, the car won't be allowed to run. Once the car is linked with a specific fob it will only receive signals from that device. In turn, other fobs will not work with the vehicle even if they appear similar. This protects the integrity of the computer system of the car and blocks the use of unauthorized key fobs to gain control over it. Most newer car dealers will only work on cars with original fobs or genuine replacements that are offered by the manufacturer. It is because the only place that has the expertise to prepare the replacement fob is a dealer's service department. However, some aftermarket fobs that are typically designed for older models with less sophisticated systems can be programmed by consumers without the need of a dealership.