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How to Program Keys For Cars Reprogramming the car key typically is the responsibility of a locksmith or automotive specialist. They can take your existing key and then use a special tool to program a new key for your vehicle. This involves the reprogramming of a blank chip on the replacement key so that it is compatible with the current settings on your vehicle. Certain manufacturers make it simple for you, while others require an expert locksmith or dealer. Self Programming The ignition keys have developed in tandem with the advancements in car technology. The days of basic mechanical keys you could buy from a hardware store for less than $10 are long gone. Modern models come with computers that are enhanced anti-theft protection. To function properly, these cars require a transponder chip-integrated key be programmed to the vehicle by a certified locksmith or a car dealer/mechanic. There are a few different types of car keys programming that can be done by professional locksmiths. Some are extremely complicated and may require advanced tools. These tools are usually not available to the general public and are used only by professionals. This type of key programming is called EEPROM Programming. It requires soldering skills, electronic knowledge and a significant amount of time. Other types of key programming can be performed by anyone. They can be done by using the onboard diagnostic port, which can be accessed via a tool specifically designed for key-fob programming. This method can be done by a trained locksmith with the help of an online guide or the vehicle's owner's 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 as they are able to provide a full range of services. They also provide a competitive price and ensure that the replacement key will work correctly. It's important to remember that a majority of vehicles can only accept one key that has been programmed for their system. If you want to save money, it's a good idea to buy an additional key fob that works and have it programmed. You can be certain that the new key will work and is compatible with your vehicle. You'll have to pay the dealer for programming and replacement keys if you don't. Key Programmers Modern cars require a key-programming method to start the vehicle's system and to start the car. In car key programming of cases keys must be programmed by the dealer or auto locksmith. This is because the key could not function correctly or start the car at all. The reason is because the new key has not been programmed to the automobile's system – and this can be quite costly. It is recommended to have two keys that are compatible with your current car so you can program the replacement key if needed. A keyprogrammer can reprogram a transponder chip on the new mechanical key or key fob. It also can clone data from an existing key to make 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 the computer, and they also have an interface that works bidirectionally with the immobilizer system. There are many different kinds of keyprogrammers on the market and they are available in a variety of sizes and shapes. Some are inexpensive while others are advanced and can cost thousands of dollars. Some are designed for specific types of cars and can provide advanced diagnostics for the electronic systems of the car. Refer to the owner's manual of your vehicle to learn how to program a key for your vehicle. Some manufacturers use proprietary technology that ensures the dealership is the sole entity able to create new keys. However, other manufacturers make it easy for anyone to accomplish it on their own. If you are unable to program the new key by yourself or by yourself, you can request your dealer to do it, but it will cost a lot. Another option is to purchase a keyprogrammer online. They are less expensive than visiting a dealership, but still not inexpensive. Before you purchase one make sure you research the seller. Some aren't reliable and could damage your vehicle. Transponder Chips Transponder chips can be found in cars manufactured in the last 20 years. This is a little piece of plastic on the back of your key that contains an RFID (Radio Frequency Identification) chip with an individual code for the specific vehicle you own. The chip emits an low-level radio signal once it is activated by an electromagnetic field. This signal is then absorbed by the special antenna that is fitted around the ignition barrel of your car. The computer system in the vehicle is then able to verify that the key's transponder chip is the right one for your car. This prevents the vehicle from starting by hot-wiring or altering the key. The chip in the car key verifies that the owner is the one who is the owner of the vehicle. This helps to reduce the risk of theft from your car. Transponder keys look like regular metal keys but have caps made of plastic. The chip itself is housed within the plastic part of the key and there are different types of cuts on the keys: a standard cut, a laser cut (also known as a sidewinder key), or a Ford Tibbe key. When the transponder key is inserted in the ignition barrel, a circuit inside of the induction coil sends out an electrical signal. The signal will be received by the chip, causing it to transmit a signal to the car. If the onboard car computer recognizes this signal as being the correct one, it will shut down the immobilizer on the vehicle and allow the engine to start. If the car doesn't recognize the transponder as being the proper signal, it won't start the engine, and will alert you with flashing lights and a siren. This function is designed to discourage people from tampering with the vehicle. However, it is not an absolute security measure. A skilled and committed thief could still be able to get around this system employing a device designed to detect the signal. It is evident that a transponder is a great option. This is something that all vehicle owners should consider if they want to protect their investment and minimize the chance of theft. Key Fobs In addition to locking and unlocking doors, launching the car from a distance or making noises to aid in finding the car in a parking space, today's key fobs can also activate a heated steering wheel or roll down all windows with a single click. A lot of these features may seem convenient but they could make it more difficult to keep the track of your car keys. Key fobs communicate with one with the car via radio frequencies which are transmitted through an antenna in the center of the key. This communication is encrypted to prevent others from stealing or stealing the signal. You can program a keyfob in various ways based on the model and make of your vehicle. You may be able to do it yourself, however most modern vehicles require a dealer or professional locksmith to program a replacement or additional fob. When you press a key fob's button the microchip inside sends an informational code to the car's receiver that it is paired with. The receiver then compares this information with the signals that are allowed inside the fob, and either locks or opens the door. If the information doesn't match, the car will not be allowed to run. Once the car is paired with a specific fob it will only accept signals from the device that is associated with it. Other fobs won't work with the car, even if they appear identical. This protects the integrity of the vehicle's computer system and to prevent the use of unauthorized key fobs to gain control over the vehicle. Most newer car dealers will only work on cars with original fobs or genuine replacements that are offered by the manufacturer. This is due to the fact that preparing the replacement fob is a process that requires technological and security expertise that can only be found in the dealer's service department. However, some aftermarket fobs — usually those for older models that have less sophisticated systems — can be programmed by the consumer without the need of a dealership.