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Keys Replacement For Cars If you have a basic mechanical key you should be able to purchase a replacement from any hardware store for relatively inexpensive. The key must be programmed by a locksmith or dealer. Smart keys are more complex and require a trip to the dealer to connect them to your car. These keys are expensive however many car insurance companies will cover the cost. Mechanical Keys You can still purchase car keys that are purely mechanical, such as the ones you place in an ignition lock cylinder and turn to start your vehicle. If your car is equipped with one of these, it's inexpensive to replace the fob and key (if lost or stolen). A locksmith can cut an entry level key for you at a cheaper price than you would pay at the dealership. You could also ask a neighbor or friend who is able to program transponder keys (which are cheaper than the keys made by the factory) to cut you a spare and program it. Getting a spare is important because modern cars won't start when a key that isn't programmed with the correct chip is used. Transponder keys are similar to mechanical keys but have an electronic chip hidden in the base. The chip communicates with the computer system in your car. Your car will recognize the code in the chip and accept it, but it will not start if any other code is used. If your spare key contains chips it must be programmed by a dealer. They'll require a special machine to both cut the key and program it. These machines are only available at certain dealerships, and it's not likely that a locksmith will have the tools needed to make an engraved key using a laser transponder. It's costly to replace keys using remotes, especially if you require an extra. You could try reprogramming your fob yourself if you're only missing the key shank and have a functional replacement fob, however it can be time-consuming and difficult. If you've lost your entire fob and the key but you're not sure, a dealer is the best option. Other kinds of keys for cars require specialized skills to replace. These include flip keys and smart keys. They are more complex and require replacement by a dealer. Certain key fobs come with an electronic key that folds into the enclosure and opens doors or uses the use of a proximity sensor to open and start your vehicle. Transponder Keys Transponder keys are likely to be used in cars constructed in the past 10 years. The keys have a microchip and an electronic receiver that is programmed to communicate to start your car. Transponder keys can be an excellent method of preventing theft, as they require two parts to start the car: the transmitter contained in the key, and the receiver connected to the immobilizer. The car will not start without the key and the immobilizer system. The key chips are programmed with a serial number that is unique to the vehicle you own. The serial number of the key is then sent to the immobilizer in the car and verified to be in line. If it does, the engine will start. This security feature is only defeated by a special device that can read the chip to match it with a different car. If you need a transponder key replacement it is necessary to visit an authorized locksmith who has the necessary equipment to reprogram the keys to your car. Some car dealerships provide this service, however they are typically more expensive than a private locksmith because of their costs. It isn't easy to get a new key with a chip. To program your car, the key must be programmed on a specific machine. This requires special software and the correct key cutter in order to get it done properly. The majority of auto parts stores can copy some of the less complicated keys for chips, but you'll need to know the serial number from the original key to ensure that the correct data is programmed into the key. Many people make the error of visiting their dealer to have their chip key copied, and end up paying more than they should. Laser-Cut Keys Laser-cut keys, also referred to as sidewinder keys due their distinctive winding cuts on the key shank they add a layer of security to your vehicle. Because it requires specialized equipment to duplicate these keys, they're a great protection against auto theft. They also have built-in chips to prevent the copying of keys by unauthorized people from starting your vehicle. They also usually contain a unique code the key that must be programmed for your particular car in order to unlock and start it. This extra layer of security is a great method to safeguard your investment and deter thieves who may be trying to steal your car for parts or to sell it to. In terms of their design, laser-cut keys are slightly different from standard mechanical cut keys in that they have fewer carved-out grooves on the key. The key shaft is more substantial, which is another indication that this isn't a standard car key. Generally, locksmiths use a machine called a milling tool to cut these types of keys. This kind of machine appears much like a drill bit and is designed to cut metal with extremely precise controlled angles. These are the safest keys that you can purchase for your vehicle. They're hard to duplicate and can only be done be cut by a licensed locksmith or dealer. They're not made with traditional keys. Instead, they are made of a tiny piece of steel that's shaped according to form a code in the factory and then cut using the laser. This type of key is extremely durable and can stand up to many years of wear and tear and is one of the best options for protecting your car. Depending on the key, it can fold in the fob or pop out by pressing the button. These keys are used in German automobiles, and offer an additional layer of protection against car thieves. They also make it difficult for thieves to pick or pick-lock your car since the cylinder is extremely durable and hard to break into. Smart Keys Smart keys communicate with the vehicle via radio-frequency identification (RFID) instead of the traditional single piece carved metal. They have a chip with a unique code, which is encoded on each key. When you open your car's doors, or open the trunk key, it sends a signal to your car's onboard computer. The computer then triggers the right frequency which allows you to open your car and start it. vehicle key replacement comes with a variety of security features that guard against theft. The key emits an extremely low-frequency signal that can only be detected by your car. If the computer onboard detects this signal, it will prompt a different one that is an exclusive sequence that only your car can understand. This will stop a tech-savvy criminal from using a pulse generator in order to “fool the system” and make the key work on other vehicles. Some smart keys offer special features, such as saving preferences for drivers, opening windows remotely or the sunroof from afar, and many more. These features can be accessed by activating the proximity sensor on the key fob, pressing a button or, in certain instances it is as simple as twisting a tiny piece of metal inside the key. Most key fobs have a button that can unlock the doors on their own However, some key fobs have an additional method to open them: a slot or holding the dead key in the dashboard where it holds an inductive coil that is able to transfer energy. resources come with an electronic (fully emergency) key blade in the key. Replacing a smart lock usually requires a visit to the dealer, who will either have the replacement in stock or purchase it for you. The dealer will also have to program the new key to recognize your car. You can also go to a locksmith for the replacement key fob to be programmed and replaced. Locksmiths will cost more than a dealer, but he or she can do the job faster and cheaper.