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Keys Replacement For Cars If you own a basic mechanical key, you should be able to find a replacement at any hardware store for relatively inexpensive. The key must be programmed by a locksmith or dealer. Smart keys are more complex and require a visit to the dealer to connect them to your car. They can be expensive however many car insurance companies will cover the cost. Mechanical Keys You can still purchase mechanical keys for cars such as the ones you insert into the ignition lock cylinder to start your car. If your car uses one of these, it's relatively cheap to replace the fob and key (if lost or stolen). A locksmith can make you a new basic key for less than you would pay at a dealership. You could also have someone close to you who is proficient in programming aftermarket transponder keys (which are less expensive than factory keys) cut keys and program them. It is crucial to have a spare key as modern cars will not start in the event that the key does have the right chip. Transponder keys look like mechanical keys, but they have a hidden electronic chip embedded in the bottom of their plastic design that communicates with the computer system in your vehicle. Your car will be able to recognize the code contained in the chip and accept it, but it will not start if a different code is utilized. If the spare key you have has chip, you'll need to take it to a dealership to get it programmed. The dealership will require a special machine for both cutting and programming the key. These machines are only available at specific dealerships, and it's unlikely that a locksmith has the equipment needed to create a laser-cut key with a transponder. Keys with remotes are expensive to replace, especially in the event that you need a spare. If you have only the key shank missing and an operational replacement fob, you can try to reprogramme your fob on your own. However, it could be time-consuming and difficult. You're better off contacting a dealer when you've lost the fob and the key. There are other types of keys for cars that require a more specific set of skills to replace, such as flip keys and smart keys. They are more complicated and usually have to be replaced at the dealership. Certain key fobs operate by proximity sensors or a door opener that is spring-loaded. Transponder Keys Transponder keys are most likely to be found in cars that were constructed in the last 10 years. These keys contain an embedded microchip and the receiver is programmed to communicate with start your car. Transponder keys are a great method to deter theft since they require two parts for the car to start which is the transmitter (transponder) in the key and the receiver connected to your immobilizer system. The car won't start without both the key and the immobilizer system. These key chips are programmed with a unique serial number that is unique to your vehicle. When the key is inserted into your ignition, the serial number is sent to the immobilizer of the car and then verified to make sure it is compatible the number, which allows the engine to start. The only thing that could be a hindrance to this security feature is a device that can read the chip and match it with another vehicle. When you have a transponder key replaced it is necessary to visit an authorized locksmith who has the tools needed to reprogram the keys to your car. Some car dealerships provide this service, however their overhead makes them more expensive than an independent locksmith. It can be difficult to find an original key that comes with chip. To program your car, the key needs to be programmed on a specific machine. This requires specialized software and the right key cutter to be done correctly. Certain of the more basic chip keys can be copied at a variety of auto parts stores but you must be aware of the serial number of the original key to ensure that the correct information is encoded into the new key. i was reading this make the error of visiting a dealer to have their chip key copied and end with a bill that is higher than what they should. Laser-Cut Keys Laser-cut keys, also known as sidewinder keys because of their distinctive winding cuts on the key shank they add a layer of security to your vehicle. Because it takes specialized machinery to duplicate these keys, they're an excellent protection against auto theft. They also have built-in chips that prevent unauthorized key copying from starting your vehicle. They have a unique number that needs to be programmed into your vehicle to unlock it and begin it. This additional layer of security is a great option to protect your investment and deter thieves who could be trying to steal your vehicle for parts or sell it. Laser-cut keys differ from mechanically-cut keys in terms of design. They have fewer grooves that are carved on the key. They also have a more robust key shaft that is an indication that it's not a regular car key. Generally, locksmiths make use of milling tool to cut these kinds of keys. It's akin to a drill, and it's designed to remove metal at precise angles. These are among the most secure keys you can get for your car, as they're extremely difficult to duplicate and only cut by the dealer or a certified locksmith. They're not made using traditional keys. Instead, they are made of a tiny piece of steel that's shaped according to form a code in the factory before being cut using the laser. This kind of key is able to endure a lot of wear and tear and is one of the best choices for protecting your vehicle. Depending on the key, it could fold into the fob, or pop out at the touch of a button. Keys like these are commonly used in German cars and offer an extra layer of protection against car thieves. They also make it very difficult for a thief to pick or pick-lock your car since the cylinder is extremely durable and difficult to break into. Smart Keys Unlike the traditional single piece of carved metal smart keys utilize radio-frequency identification, or RFID to connect with the car. They have a chip with a unique code, which is encoded on each key. The key transmits a message to the computer onboard of your vehicle whenever you unlock the doors or open the trunk. The computer then signals the appropriate frequency and allows you to connect to your car and begin it. The chip inside the smart key has several security features to guard it from theft. The key emits an extremely low-frequency signal, which can only be detected by your car. If the onboard computer detects this signal, it will display a different one that is an individual sequence that only your vehicle can understand. This will stop a tech-savvy criminal from using an electronic pulse generator to “fool the system” and make the key work on other vehicles. Some smart keys offer special features, like the ability to store preferences for drivers, opening windows remotely or the sunroof via remote and many other. These functions can be accessed by activating the proximity sensor on the key fob by pressing a button or, in certain instances it is as simple as twisting a tiny piece of metal inside the key. Certain key fobs are opened by holding the dead key in a slot or by placing it next to an inductive coil that is located on the dashboard. Some key fobs feature mechanical (fully emergency) key blade that is inside the key. Replacing a smart lock usually requires a visit to the dealership, where they will either have the replacement in stock or purchase it for you. They'll also need to program the new key to recognize your vehicle. But, you can visit a locksmith to have your replacement key fob programmed and replaced. Locksmiths will cost more than dealers, but he or she can complete the task faster and cheaper.