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Keys Replacement For Cars You can buy the replacement key for a mechanical key in any hardware shop. The key needs to be programmed either by a locksmith or a dealer. Smart keys are more complicated and require a visit to a dealer to pair them with your car. These types of keys are typically expensive but some insurance companies will cover the cost. Mechanical Keys You can still purchase mechanical keys for cars, the ones that you insert into an ignition lock for your vehicle to start. If your car is equipped with one of these, it's relatively affordable to replace the key and fob (if lost or stolen). A locksmith can make you new keys for less than you would buy from a dealer. You could also have a friend or neighbor that is proficient in programming aftermarket transponder keys (which are cheaper than keys made by the factory) cut keys and program them. It is important to have a spare key as modern cars won't start when the key does not have the right chip. Transponder keys look like mechanical keys, but they are actually equipped with an electronic chip in the base of their plastic design that communicates with your vehicle's computer system. The car will accept the code on the chip, but will not start if you choose another code. If your spare key has chips, it will need to be programmed at a dealership. The dealership will need a special machine for both cutting and programming the key. These machines are only available at certain dealerships, and it's not likely that a locksmith will have the tools needed to make a laser-cut key with a transponder. It's costly to replace keys with remotes, especially if require an extra. If you have just the shank of your key missing and an operational replacement fob, you can attempt to reprogramme your fob on your own. However, it can be time-consuming and complicated. If you've lost the complete key and fob, however you should seek out a dealer as the best option. There are different kinds of car keys that require a more specific set of skills to replace, such as flip keys and smart keys. They are more complex and need to be replaced by a dealer. Some key fobs are operated by proximity sensors or a spring-loaded door opener. Transponder Keys If your car was built in the past 10 years or so, it's likely to have a transponder key system. These keys are equipped with an embedded microchip inside the key and an internal receiver in your car that both have been programmed to communicate with each other to start the vehicle. Transponder keys are a fantastic way to discourage theft because they require two parts in order for the car to start that is the transmitter (transponder) inside the key and the receiver connected to your immobilizer system. Without both the key and the immobilizer device present, the car will not start and is impossible to hotwire. These key chips have an individual serial number specific to your vehicle. When the key is inserted into the ignition, the serial number is sent to the cars immobilizer and then verified to make sure it matches up the number, which allows the engine to start. The only thing that can stop this security feature is a device that can detect the chip and match it with another vehicle. You'll have to find an locksmith with the equipment needed to reprogram your key. Some car dealerships offer this service too, but they are typically more expensive than a independent locksmith due to their overhead. Finding a new car key that has a chip in it can be a complicated process. The key has to be cut using a specific machine to ensure that it has the correct tracks in place that can be used to program the key to your car. It requires specialized software, as well as the appropriate key cutter to cut it correctly. Some of the simpler chip keys can be cloned at a variety of auto parts stores, but you need to know the serial number of the original key to ensure that the proper information is being encoded into the new key. Many people make the error of visiting their dealer to get a chip key copied, and end with a bill that is higher than what they need to. Laser-Cut Keys Laser-cut keys, also known as sidewinder keys due their distinctive winding cuts to the shank of the key, add an extra layer of security to your vehicle. Because it requires specialized equipment to duplicate these keys, they're a great security measure against auto theft. Like transponder keys. They have built-in chips that block unauthorized key copies from getting into your vehicle. They also have a unique code on the key, which must be programmed for your particular vehicle to allow it to be opened and started. This additional level of security is a fantastic way to protect your investment and deter thieves who may be trying to steal your car to make parts or sell it to. In terms of design Laser-cut keys are different from mechanical cut keys in that they have smaller grooves that have been carved out of the key. The key shaft is larger, which is a sign that this is not an ordinary car key. Locksmiths typically use a milling machine to cut keys. This kind of machine appears like a drill and is designed to remove metal at very precise, controlled angles. These are among the most secure keys you can buy for your vehicle, since they are extremely difficult to duplicate and only cut by a dealer or a licensed locksmith. 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 with a laser. This kind of key is able to withstand a lot wear and tear, and is one of the best options for protecting your vehicle. Depending on the key, it could fold in the fob or pop out by pressing the button. These kinds of keys are commonly used in German cars and offer an extra layer of security against car thieves. They also make it extremely difficult for thieves to pick or pick-lock your car because the cylinder is extremely tough and difficult to break into. Smart Keys Smart keys communicate with the vehicle using radio-frequency identification (RFID) instead of the traditional single piece carved metal. They have a chip with an unique code that is encoded on each key. Whenever you unlock your car's doors, or open the trunk the key transmits a signal to your vehicle's onboard computer. The computer then triggers the correct frequency and allows you to connect to your car and begin it. key replacements for cars of the smart key includes a variety of security features that protect against theft. The key emits a low-frequency signal, which can only be detected by your vehicle. If the computer onboard detects this signal, it will transmit a different one which is an exclusive code that only your vehicle can comprehend. This stops a tech-savvy criminal from using a pulse generator to “fool the system” and perform the work on other vehicles. Some smart keys offer special features, such as the ability to store preferences for drivers and opening windows remotely, or the sunroof via remote and many more. These features are accessible by activating the proximity sensor on the key fob by pressing a button or, in certain instances, by twisting a small piece of metal inside the key. Some key fobs can be opened by holding the dead key in a slot, or by placing it next to an inductive coil on the dashboard. Some even include an emergency (fully mechanical) key blade concealed in the key to allow this. Replacing a smart lock requires an appointment with a dealer, where they can order the replacement or have it on hand. They'll also have to program the new key to recognize the car you are driving. However, you can also visit a locksmith to get your replacement key fob programmed and replaced. A locksmith may cost more than a dealer however, they can complete the task faster and cheaper.