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How to Program Keys For Cars Typically, car key reprogramming is the responsibility of a locksmith or an automotive specialist. They can make use of a specific software to program the new key using your old one. This involves the reprogramming of a blank chip on the replacement key so that it matches the current settings of your vehicle. Some manufacturers make this easy but others require a dealer or locksmith. Self-programming The ignition keys have developed along with the car technology. Gone are the days of simple mechanical keys that were made at the hardware store for less than $10. Newer models are equipped with computers that offer improved security against theft. These cars require a transponder-chip-integrated key to be programmed by a professional locksmith, mechanic or dealer for proper operation. Professional locksmiths are able to perform a variety of different types of programming for car keys. Some are complex and require advanced tools. These tools are usually not accessible to the general public and are only used by professionals. This kind of programming for car keys is referred to as EEPROM Programming and requires soldering, electronic expertise, and a lot of time. Other kinds of programming car keys are much simpler and can be performed by anyone who is able to. These are done using the onboard diagnostic port, which is accessible via a tool specifically designed for key-fob programming. This method can be done by a locksmith who is trained using an online guide or the vehicle's owner manual. Locksmiths with experience can program a brand new or replacement car key fob swiftly and accurately. This is the best choice for a vehicle owner since they can offer a wide range of services. They also can provide a competitive price and peace of mind that the replacement key will work properly. Remember that most vehicles can only accept a single programmed car key. If you're trying to save money, it may be better to buy a 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 vehicle. You will have to pay the dealer for programming and replacement keys if you don't. Key Programmers Modern cars require a key-programming process to set up their systems and to start the car. In some instances keys must be programmed by the dealer or an auto locksmith. mobile car key programming may not work properly or not start the vehicle in any way. The reason is because the new key has not been programmed into the vehicle's system, and this could be quite costly. This is why it's a good idea to always have two working keys for a modern automobile and have the replacement key programmed if needed. Keyprogrammers can recode the transponder chip on an entirely new mechanical key or key fob. It is also able to copy the data of an existing key to make duplicates. These devices are handheld units 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 feature a bidirectional user interface to work with an immobilizer system. There are a number of different types of keyprogrammers available on the market and they come in a variety of shapes and sizes. Some are inexpensive while others may cost thousands of dollars. Certain are designed for specific vehicles and can provide advanced diagnostics of the car's electronic system. Refer to the owner's manual of your vehicle to learn how to program the key to your vehicle. Certain manufacturers employ proprietary software that only permits dealers to make new keys. Other manufacturers make it easy for anyone to do. If you're not able to program a new key by yourself or request the dealer to do it for you, but this will be very expensive. Another option is to purchase a keyprogrammer online. They are less expensive than visiting a dealership, but still not expensive. Be sure to look up the seller before buying one – some are not reliable and could harm your vehicle. Transponder Chips Transponder chips can be found in vehicles manufactured in the last 20 years. It's a tiny piece of plastic in the head of your key that contains a RFID (Radio Frequency Identification) chip with a unique code for the specific vehicle you own. When activated by an electro-magnetic field the chip emits a low level signal. This signal is then absorbed by the special antenna that is fitted around the ignition barrel of your vehicle. This allows the vehicle's computer system to determine if the transponder chip that is in the key is the correct one for your specific vehicle. This is the reason why doing hot-wiring or altering the ignition system of the vehicle to get it started. The chip in the key also confirms that you are the legitimate owner of the vehicle. This will help reduce the possibility of theft from your vehicle. Transponder keys appear like regular metal keys but they have caps made of plastic. The chip is housed within the plastic part of the key and there are different types of cuts on these keys: a cut, a laser cut (also known as a sidewinder key) or Ford Tibbe key. When the transponder key is inserted into the ignition barrel, a circuit inside of the induction coil will send out an electrical signal. The signal will be received by the chip and cause it to send a signal back to the car. If the car's computer detects this signal as the right one, it will turn off the vehicle immobilizer and allow the engine to start. If the car isn't able to recognize the transponder as being the proper signal, it won't start the engine and will notify you via flashing lights and an alarm. This system is designed to deter those who would attempt to alter the vehicle. However it isn't a foolproof measure of security. A determined and skilled thief could still evade this system by using a specific device that blocks the signal. You can see that the transponder is an excellent 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 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 click. These additional features can make it difficult for you to find your car keys. Key fobs utilize radio frequencies to communicate with each other and the car. The frequencies are transmitted through a small antenna located in the middle of the key. This signal is encrypted to prevent others from stealing or modifying the signal. There are several ways to program a key fob, based on the make and model. Certain cars let you do this by yourself. However, the majority of modern models require you to visit an expert locksmith or dealer to program a replacement key fob or an additional one. When you hit the button on a key fob it transmits an informational code to the car's receiver it is paired with. The receiver compares this information to the signals that are allowed inside the fob, and either opens or closes the door. If the information does not match, the car will not be allowed to run. Once the car is associated with a particular fob, it will only accept signals from the device. As a result, other fobs won't be able to work with the vehicle, even though they appear similar. This is to safeguard the integrity of the car's computer system, and also to stop unauthorised key fobs from taking control of the vehicle. The majority of newer dealerships will only deal with vehicles that have original fobs or genuine replacements sold by the manufacturer. It is because the only place with the expertise to prepare an appropriate replacement fob is a dealer's service department. Certain aftermarket fobs, typically those for older models with less sophisticated systems can be programmed with out the need for a dealer.