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How to Program Keys For Cars Reprogramming the car key typically is the work of a locksmith or an automotive specialist. They can take your old working key and use a special tool to program a new key for your car. The process involves reprogramming the blank chip inside the replacement key to fit the current settings of your vehicle. Some manufacturers make it simple, while other require an expert locksmith or dealer. Self-programming The ignition keys have evolved along with the car technology. The days of simple mechanical-only keys that could be made at the hardware store for less than $10. The latest models are equipped with computers that have improved anti-theft security. The cars require a transponder chip-integrated key to be programmed by a professional locksmith car dealer or mechanic for proper operation. Professional locksmiths can carry out a variety of different types of programming for car keys. Certain types are extremely complex and may require sophisticated tools. These tools are generally not accessible to the general public and are used only by professionals. This type of programming for car keys is referred to as EEPROM Programming and requires soldering, electronic skills and a lot of time. Other forms of car key programming are much simpler and can be performed by the average person. These are usually done by using the diagnostics port on the car, which can be accessed with the key-fob-programming device. This method can be performed by a professional locksmith using an online guide or the vehicle's owner manual. Professional locksmiths are able to program a new or replacement car key fob in a short time. This is the best option for vehicle owners as they can offer a full range of services. They also provide an affordable price and peace of mind that the replacement key will function properly. Be aware that most automobiles only accept one programmed car key. If you're trying to save money, it may be a better idea to purchase a functioning spare key fob, and have it programmed by an auto locksmith. This way, you will be certain that the new key is programmed to your vehicle and that it will work. 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 process to initialize their vehicle's systems and to start the car. In many cases keys must be configured by the dealer or an auto locksmith. This is because the key may not function correctly or start the car in any way. This is because the key has not yet been programmed into the car's system. This can be costly. This is why it's a good idea to always have two keys working for a modern car, so you can get the replacement key programmed when required. Keyprogrammers are devices which can reprogram the transponder chip into an entirely new key fob or mechanical key. It is also able to copy 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 also provide a bidirectional interface for working with the immobilizer system. There are a variety of keyprogrammers that are available on the market. They are available in a variety of shapes, sizes and colors. Some are cheap while others are sophisticated and could cost thousands of dollars. Some are made for specific vehicles and can provide advanced diagnostics of the vehicle's electronic system. Refer to the owner's manual of your vehicle to learn how to program keys for your vehicle. Some manufacturers use proprietary technology that guarantees that the dealership is the only entity that can make new keys. However, other manufacturers make it easy for anyone to do it themselves. If you are unable to program a new key on your own or ask the dealership to do it for you, however this will be very expensive. Another option is to buy a keyprogrammer online. They're less expensive than visiting a dealership, but they're still not cheap. Before you purchase one, do some research on the seller. Some aren't reliable and may damage your vehicle. Transponder Chips If your car was built within the last 20 years, it is likely that it has a transponder chip inside of it. It's a small plastic thing in the head of your key that contains an RFID (Radio Frequency Identification) chip with an individual code for your specific vehicle. When it is activated by an electro-magnetic field the chip emits a low-level signal. This signal is then taken up by the antenna that is attached to the barrel that controls your ignition in your vehicle. The computer system of the vehicle can then verify that the key's transponder chip is the correct one for your car. This prevents the vehicle from starting by hot-wiring, or by altering the key. The chip in the key also verifies that you are the genuine owner of the vehicle. This will help reduce car theft. Transponder keys appear like regular metal keys but they have a plastic cap. The chip is located inside the plastic part of the keys. There are a variety of cuts: a standard cut, a Laser cut (also called a sidewinder or Ford Tibbe) and a Ford Tibbe. When the transponder key is placed in the ignition barrel, a circuit inside of the induction coil will send out a signal. The signal is received by the chip which sends a signal to the vehicle. If the computer onboard the car recognizes the signal as correct it will turn off the car immobilizer so that the engine can 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 a siren. This feature is intended to deter people from trying to alter the vehicle, but it's not a 100% security measure. A skilled and skilled criminal could still bypass this system with a specially designed device that intercepts the signal. As you can see there are quite number of benefits to having a transponder key. All car owners should take this into consideration when they want to safeguard their investment and reduce theft risk. Key Fobs In addition to locking and unlocking doors, launching the car from a distance or making chirping sounds to help find a car in a parking space Key fobs today can also activate a heated steering wheel or roll down all windows with just a single click. Many of these extra features might seem useful, but they can also make it more difficult to keep track of your car keys. Key fobs are able to communicate with each other and with the car through radio frequencies which are transmitted by an antenna in the center of the key. The signal is encrypted to stop others from stealing or modifying the signal. You can program a keyfob in various ways based on the model and brand of your vehicle. Some cars allow you to do this by yourself. However, most newer models require you to visit a professional locksmith or dealer to program a new key fob or an additional one. When you press the button on a key fob the microchip transmits an indication to the receiver inside the vehicle that it is paired. G28 compared the information with the 'allowed signals' stored in the key fob, and then opens or locks the car's doors. If the data does not match the fob's information, the car won't be allowed to operate. Once the car is linked with a particular 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 look like. This protects the integrity of the computer system of the vehicle and stops the use of unauthorized key fobs to gain control of it. The majority of newer dealerships will only work with vehicles that have original fobs or genuine replacements supplied by the manufacturer. The reason for this is that the only place with the knowledge to create an appropriate replacement fob is a dealer's service department. However, some aftermarket fobs — usually those for older models with less sophisticated systems — can be programmed by consumers without the need of a dealership.