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How to Program Keys For Cars Typically, car key reprogramming is the job of a locksmith specialist. They can use a special software to program the new key using your old one. The procedure involves reprogramming your chip in your replacement key to match the current settings of your vehicle. Certain manufacturers make this process simple but others require a dealer or locksmith. Self Programming As technology for cars has improved over time, the ignition keys have also evolved as well. Gone are the days of simple mechanical keys that could be manufactured at an hardware store for less than $10. Modern models come with computers that offer improved security against theft. To function correctly, these vehicles require that a transponder chip-integrated key be programmed into the vehicle by a certified locksmith or a car dealer/mechanic. Professional locksmiths can perform various kinds of programming for keys for cars. Some are complex and require specialized tools. These tools are usually not available to the general public and are used only by professionals. This type of programming is referred to as EEPROM Programming. It requires the ability to solder, electronic skills and a significant amount of time. Other types of car key programming are a lot simpler and can be done by anyone who is able to. They are typically done using the onboard diagnostics port which is accessible with a special key-fob-programming tool. A locksmith can perform this procedure with the help of an online guide and the owner's manual. The majority of locksmiths who are professionals can program a brand new or replacement car key fob fast and accurately. This is the best choice for a vehicle owner since they can offer a wide range of services. They can provide a competitive rate and the assurance that the replacement key will continue to work. Remember that most vehicles only accept one programmed car key. So, if you're looking to save money, it could be a better idea buy a spare key fob, and have it programmed by an auto locksmith. You can be assured that the new key works and is compatible with your vehicle. In the event that it doesn't, you'll need to pay the dealer for replacement keys and programming services. Key Programmers Modern automobiles require a key-programming method to initialize their vehicle's systems and then start the vehicle. In some instances, the key must be programmed by the dealer or auto locksmith. The key may not function properly or it may not even start the vehicle at all. This is because the key hasn't yet been programmed into the car's system. This can be expensive. It is best to have two keys that work with your current car so you can program the replacement key whenever required. A keyprogrammer can reprogram the transponder chip on a new mechanical key or key fob. It can also clone the data from an existing key and allow duplicate keys to be created. These are handheld devices that connect to the car's On Board Diagnostics (OBD port). They come with diagnostic software that allows them to communicate with a computer. They also have a bidirectional interface for working with an immobilizer system. There are many different types of keyprogrammers available on the market. They come in all sizes, shapes and colors. Some keyprogrammers are cheap, while others can cost thousands of dollar. Some are made for specific automobiles and offer advanced diagnostics of the vehicle's electronic system. Check out the owner's manual to learn how to program keys for your vehicle. Some manufacturers use proprietary technology that ensures the dealership is the sole entity that can create new keys, but other manufacturers make it easy for anyone to do it themselves. If you're unable to program a new key by yourself, you can ask the dealership to program it for you, but this will be very expensive. You can also purchase a keyprogrammer on the internet. These are less expensive than going to a dealer, but they're still expensive. Be sure to research the seller before purchasing one. Some aren't reliable and could harm your vehicle. Transponder Chips Transponder chips are likely be found in vehicles manufactured in the last 20 years. It's a small plastic thing inside the head of your key that houses a RFID (Radio Frequency Identification) chip with a unique code for the specific vehicle you own. When it is activated by an electro-magnetic field, the chip emits a low-frequency signal. This signal then gets amplified by the specific antenna that is attached to the barrel that controls your ignition in your car. The computer system of the vehicle is then able to verify that the transponder chip of the key is the correct one for your car. This is what stops from modifying or hot-wiring the vehicle's ignition system to get it started. The chip inside the key also confirms that you are the genuine owner of the vehicle. This can help to reduce car theft. Transponder keys that are regular in shape like regular keys and have an outer layer of plastic. The chip is housed inside the plastic portion of the key and there are a few different cuts that can be found on these keys: a regular standard cut, a laser cut (also known as a sidewinder key), or a Ford Tibbe key. When the transponder key is inserted into the ignition barrel, a circuit within of the induction coil will send out an electrical signal. The signal is received by the chip which then transmits a signal the vehicle. If the computer inside the car detects the signal as being correct it will turn off the car immobilizer, allowing the engine to start. If the car does not recognize the transponder signal as the proper one, it will keep the engine from running and will alert you by flashing its lights and sounding an alarm. This function is designed to discourage individuals from tampering with the vehicle. However it's not an unbreakable security measure. A skilled and committed thief may still be able to escape this security system by using a special device to intercept the signal. It is evident that a transponder is a great option. All car owners must take this into consideration when they want to safeguard their investment and decrease the risk 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 lot Key fobs today can also turn on the heated steering wheel or open all windows with just a single click. Many of these extra features may appear convenient but they could make it difficult for you to keep the track of your car keys. Key fobs communicate with one other and with the car through radio frequencies which are transmitted by an antenna in the middle of the key. The signal is encrypted to prevent others from intercepting or replicating the signal. There are several ways to program a key fob depending on your vehicle's make and model. You can sometimes do this yourself, however most modern vehicles require a locksmith shop or a professional to program a replacement or a second fob. When you press the button on a key fob, the microchip sends a signal to the receiver in the car with which it is paired. The receiver then compares the data with the 'allowed signals' that are stored on the key fob and then it opens or closes the car door. If the information does not match, the car will not be allowed to operate. Once the car is paired with a particular fob, it will only receive signals from that device. As a result, other fobs won't work with the vehicle even though they appear similar. This safeguards the integrity of the computer system that runs the car and blocks the use of unauthorized key fobs to gain control of it. Most newer car dealerships will only accept vehicles that have original fobs, or genuine replacements offered by the manufacturer. This is due to the fact that preparing an appropriate replacement fob requires technical and security knowledge that can only be found in the dealer service department. However, some aftermarket fobs — usually those for older models that have less sophisticated systems — can be programmed by customers without the need for dealers.