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How to Program Keys For Cars Typically, re programming car key s is the work of a locksmith or an automotive specialist. They can take your existing key and use a special tool to program a new one for your vehicle. The procedure involves reprogramming the blank chip inside the replacement key to fit the current settings of your vehicle. Certain manufacturers make this process simple, while others require a locksmith or dealer. Self-Programming As car technology has evolved over time, the ignition keys have also evolved as well. The days of simple mechanical keys that you could buy from the hardware shop for less than $10 are gone. The latest models come with computers with improved anti-theft protection. To function correctly, these vehicles require that a transponder chip-integrated key be programmed into the vehicle by a professional locksmith or a car dealer/mechanic. There are a few different types of car key programming that can be done by professional locksmiths. Some are very complex and require sophisticated tools. These tools are usually not available to the general public and are only used by professionals. This type of key programming is called EEPROM Programming. It requires the ability to solder, electronic skills and a significant amount of time. Other kinds of programming for car keys are much simpler and can be performed by anyone who is able to. They are typically done using the onboard diagnostics port, which can be accessed with a special key-fob-programming tool. This method can be performed by a professional locksmith using an online guide or the car's owner's manual. Professional locksmiths can program a replacement or new car key fob in a short time. This is the best option for a vehicle owner since they are able to provide a full range of services. They also provide a competitive price and peace of mind that the new key will work properly. Keep in mind that the majority of vehicles only accept one programmed car key. If you want to save money, it's a good idea to purchase a spare key fob that works and then have it programmed. This way, you can be sure that the new key has been programmed to your car and that it works. You'll need to pay the dealer for programming and replacement keys if they don't. Key Programmers Modern vehicles typically require a key programming process to initialize the vehicle's system and allow the car to begin. In some instances the key needs to be programmed by the dealer or an auto locksmith. This is because the key could not function correctly or start the vehicle at all. This is because the new key has not been programmed into the vehicle's system. This can be quite costly. This is why it's a great idea to always have two keys that work for a modern automobile and have the replacement key programmed if necessary. Keyprogrammers can recode the transponder chip of a new mechanical key or key fob. It is also able to copy the data from an existing key and allow duplicate keys to be made. These are handheld devices that connect to the car's On-Board Diagnostics (OBD) port. They come with diagnostic software, which 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 on the market and they are available in a variety of shapes and sizes. Some are inexpensive while others could cost thousands of dollars. Some are specifically designed for certain types of vehicles and provide advanced diagnostics for the vehicle's electronic systems. If you're looking to program the new key into your vehicle, check the owner's manual to find out how. Certain manufacturers employ proprietary technology that makes sure that the dealership is the only entity that can make new keys, but other manufacturers make it fairly simple for anyone to do it on their own. If you are unable to program the new key on your own and you are unable to do it, then ask your dealer to do it, but it'll cost you a lot. You can also purchase a keyprogrammer from the internet. These are less expensive than visiting a dealership however they're not cheap. Make sure you investigate the seller prior to purchasing one – some are not reliable and can damage your car. Transponder Chips If your car was manufactured within the past 20 years, then it has a transponder inside of it. It's the tiny plastic piece inside the head of your car key that houses an RFID (Radio Frequency ID) chip with a code unique to your car. When it is activated by an electro-magnetic field, the chip emits a low level signal. The signal is then taken up by the antenna that is attached to the ignition barrel of your car. This allows the car's computer system to determine if the transponder chip that is in the key is the right one for the car you have. This stops the vehicle from being started through either hot-wiring or by manipulating. The chip inside the car key confirms that the owner is the person who is the owner of the vehicle. This can help to reduce the possibility of theft from your vehicle. Regular transponder keys are designed like regular keys and have an outer layer of plastic. The chip is contained in the plastic portion of the key, and there are different kinds of cuts available on the keys: a standard cut laser cut (also called a sidewinder key) or Ford Tibbe key. A circuit inside the induction coil will emit a signal when the transponder is inserted into an ignition barrel. The signal will then get absorbed by the chip and cause it to transmit a signal to the car. If the computer in the car detects the signal as being correct it will turn off the vehicle immobilizer, allowing the engine to start. If the car doesn't recognize the transponder as the correct signal, it won't start the engine, and will alert you with flashing lights and siren. This feature is intended to discourage people from trying to tamper with the vehicle, however it's not a 100% security measure. A skilled and committed thief could still be able to escape this security system by employing a device designed to take over the signal. You can see that a transponder is a great option. All car owners should take this into consideration if they wish to protect their investment and reduce 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 remotely, make chirping noises to aid in finding a car or turn on the heated steering wheel. These additional 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 which are transmitted through an antenna that is located in the center of the key. This communication is encrypted, which helps keep others from stealing and re-transmitting the signal. There are a few different ways to program a key fob, based on the make and model. It is possible to do this yourself, however most modern cars require that you visit a dealer or professional locksmith to program a replacement or an additional fob. When you press a key fob's button it transmits an informational code to the car's receiver that it is linked to. The receiver compared this information with the 'allowed' signals stored on the fob and either opens or locks the door. If the data doesn't match the signals, a chirping sound can be heard and the car isn't allowed to function. Once the car is paired with a specific fob, it will only accept signals from the device. This means that other fobs won't work with the vehicle, even though they have the same appearance. This protects the integrity of the computer system of the car and prevents unauthorized key fobs gaining control of it. Most newer car dealers will only work on cars with original fobs or genuine replacements that are supplied by the manufacturer. This is due to the fact that preparing an appropriate replacement fob requires technical and security knowledge that is only available in the dealer's service department. Certain aftermarket fobs, typically those from older models with less advanced systems can be programmed with out the need for a dealership.