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How to Program Keys For Cars Reprogramming the car key typically is the job of a locksmith or automotive specialist. They will use a special software to program the new key using your old one. This involves changing the chip inside your replacement key to ensure that it matches the current settings of your vehicle. Some manufacturers make this easy however others require a locksmith or dealer. Self-Programming As the technology of cars has advanced throughout the years, ignition keys have evolved as well. The days of basic mechanical keys you could make at a hardware shop for less than $10 have gone. Modern models come with computers that have improved security against theft. To function correctly, these vehicles require a transponder chip-integrated key be programmed to the vehicle by a professional locksmith or car dealer/mechanic. Professional locksmiths can perform various kinds of programming for keys to cars. Some are very complex and may require advanced tools. These tools are 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 lot time. Other forms of car key programming are a lot simpler and can be accomplished 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 locksmith who is trained using an online guide or an owner's manual. Most professional locksmiths can program a brand new or replacement car key fob quickly and precisely. This is the best option for car owners as they are able to provide a full range of services. They also provide an affordable cost and assurance that the replacement key will function properly. It is important to keep in mind that many vehicles will only accept one programmed key for their system. If you're trying to save money, it could be better to purchase a working spare key fob, and have it programmed by an auto locksmith. You can be assured that the new key will work and is programmable for your car. Otherwise, you will need to pay the dealership for replacement keys and programming services. Key Programmers Modern vehicles require a key-programming method 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. This is because the key might not function properly or start the vehicle in any way. This is because the key hasn't yet been programmed into the car's system. This could be costly. This is why it's a great idea to have two working keys for modern vehicles and to have the replacement key programmed if necessary. A keyprogrammer is a tool which can reprogram the transponder chip into an entirely new key fob or mechanical key. It is also able to copy the information from an existing key, allowing duplicates to be created. These devices are handheld units that connect to the car's On-Board Diagnostics (OBD) port. They have diagnostic software that allows them to communicate with the computer and also provide an interface that works bidirectionally with the immobilizer system. There are many various kinds of keyprogrammers on the market and they come in all shapes and sizes. Certain keyprogrammers are affordable and others may cost thousands of dollars. Some are made for specific automobiles and provide advanced diagnostics of the car's electronic system. Consult your owner's guide to learn how to program keys for your vehicle. Certain manufacturers have proprietary software that only permits the dealership to make new keys. Other manufacturers make it simple for anyone to complete. If you are not able 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 be very costly. You can also buy a keyprogrammer from the internet. They're less expensive than visiting a dealership however, they're not cheap. Be sure to research the seller before purchasing one. Some aren't reliable and can damage your vehicle. Transponder Chips If your car was built within the past 20 years, it is likely that it has a transponder chip inside of it. It's the small plastic piece inside the head of your car key that contains an RFID (Radio Frequency ID) chip that has a unique code to your car. The chip emits an low-level radio signal once it is activated by an electromagnetic field. This signal is then amplified by the specific antenna that is positioned around the ignition barrel of your car. This allows the car's computer system to determine if the transponder chip inside the key is the correct one for the car you have. This stops the vehicle from being started through hot-wiring, or by altering the key. The chip in the key also verifies that you are the legitimate owner of the vehicle. This will help reduce car theft. Transponder keys that are regular in shape like regular metal keys with an outer layer of plastic. The chip is inside the plastic portion of these keys. There are various cuts that are a standard cut, laser cut (also known as a sidewinder or Ford Tibbe) and Ford Tibbe. When the transponder key is inserted in the ignition barrel, a circuit inside of the induction coil sends out the signal. The signal will be taken up by the chip and cause it to send a signal back to the car. If the car's computer detects this signal as the correct one, it will shut down the vehicle immobilizer and allow the engine to start. If the car doesn't recognize the transponder as the correct signal, it will not start the engine and will warn you with flashing lights and a siren. This feature is designed to discourage people from tampering with the vehicle. However it's not a foolproof measure of security. A skilled and determined thief can still get around this system by using a specific device that blocks the signal. As you can see, there are quite a number of benefits to having a transponder key. All car owners should take this into consideration in order to safeguard their investment and decrease theft risk. Key Fobs Key fobs today can offer more than locking and unlock doors. They can also start your vehicle remotely, make chirping noises to aid in finding the car or turn on the heated steering wheel. Many of these extra features might seem useful however they could make it harder for you to keep the keys to your car. Key fobs communicate with one with the car via radio frequencies that are transmitted via a small antenna located in the middle of the key. The communication is encrypted, which helps stop others from stealing and retransmitting the signal. Keyfobs can be programmed in a variety of ways depending on the model and brand of your car. Some cars allow you to do it yourself. However, the majority of modern models require you to visit an expert locksmith or dealer to program a replacement key fob or additional one. When you press the button on a key fob, the microchip sends an indication to the receiver inside the vehicle that it is paired. The receiver compares this information with the 'allowed' signals inside the fob, and either opens or locks the door. If programming car key does not match the fob's information, the car won't be allowed to operate. Once the car is connected to a specific fob, it only accepts signals from the device. This means that other fobs won't work with the vehicle, even though they have the same appearance. This is to safeguard the integrity of the vehicle's computer system and prevent the use of unauthorized key fobs to gain control of the vehicle. The majority of newer dealerships will only work with vehicles that have original fobs, or genuine replacements supplied by the manufacturer. This is because the process of creating a replacement fob requires technological and security skills which can only be obtained in the dealer service department. However, some fobs from the aftermarket — usually those for older models that have less sophisticated systems — can be programmed by customers without the need for a dealership.