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Keys Replacement For Cars You can buy the replacement key for a mechanical key at any hardware shop. However, the key must be programmed by a locksmith or dealer. Smart keys are more complex and require a visit from the car dealer to be paired with your vehicle. They are costly however many car insurance companies will cover the cost. Mechanical Keys You can still buy car keys that are only mechanical, like the ones you insert into an ignition lock cylinder and then turn to start your car. If your car uses one of these, it's inexpensive to replace the fob and key (if lost or stolen). A locksmith can design new keys for less than what you purchase from a dealership. You could also ask a neighbor or friend who is able to program transponder keys for aftermarket use (which are cheaper than the keys made by the factory) to cut you a spare and have it programmed. It is essential to have a spare key because modern cars will not start in the event that the key does have the correct chip. Transponder keys look a lot like mechanical keys, but they contain a hidden electronic chip embedded in the bottom of their plastic shape that communicates with your car's computer system. The car will accept the code in the chip, but it will not start if you choose another code. If your spare key contains a chip it must be programmed by a dealer. You'll need a special machine to both cut the key and program it. These machines are only available at specific dealerships, and it's not likely that a locksmith has the equipment required to create a laser-cut key with a transponder. Keys with remotes cost a lot to replace, especially when you require an extra. If you only have the shank of your key missing and a working replacement fob, you can try to reprogramme your fob by yourself. However, it could be time-consuming and difficult. It's better to go to an authorized dealer when you've lost the fob and the key. There are other kinds of car keys that require a more specific set of skills to replace, such as flip keys and smart keys. These are more complex and typically need to be replaced at the dealership. Certain key fobs come with keys that are spring-loaded and fold into the enclosure and opens a door or uses proximity sensors to open and start your vehicle. Transponder Keys If your car was built in the last 10 years or so you're likely to use a transponder key system. The keys have the microchip as well as the receiver is programmed to communicate with start your car. Transponder keys are an excellent way to discourage theft because they require two parts in order for the car to be started which is the transmitter (transponder) inside the key and the receiver that is connected to your immobilizer system. Without both the key and the immobilizer system present, the car will not start and it will be impossible to hotwire. Key chips have an individual serial number specific to your vehicle. The serial number of the key is transmitted to the immobilizer inside the car, and then checked to match. If it does then the engine will begin. The only thing that can stop this security feature is a special device that can read the chip and match it to another vehicle. You'll require a locksmith that has the equipment to reprogram your key. Some car dealerships offer this service as well but they are typically more expensive than an independent locksmith because of their expenses. It can be difficult to get a new key with chip. To program your car, the key has to be programmed on a special machine. This requires special software and the correct key cutter in order to be done correctly. The majority of auto parts stores can duplicate some of the more basic chips keys, but you will need to be aware of the serial number of the original key to ensure that the correct information is programmed into the key. Many people make the mistake of going to their dealer for an exact copy of a chip key and end up paying high prices. Laser-Cut Keys Laser-cut keys are also referred to as a sidewinder keys due to the distinctive winding cut that is made on the shank of the key. They add an additional layer of security to your vehicle. Keys like these are a great security measure against theft of your vehicle because they require specialized equipment to duplicate. Like transponder keys, they have built-in chips that prevent duplicate keys from starting your car. They also typically have a unique code on the key, which must be programmed for your specific car in order to allow it to be opened and started. This additional layer of security is a fantastic way to protect your investment and deter thieves who may be trying to steal your vehicle for parts or sell it on. Keys cut with lasers differ slightly from mechanically cut keys in terms of design. They have fewer grooves carved out on the key. They also have a more robust key shaft which is an excellent indication that it's not your regular car key. Locksmiths generally employ a machine known as a milling tool to cut these kinds of keys. This kind of tool looks similar to a drill bit and is designed to remove metal at very precise and controlled angles. These are the most secure keys you can buy for your vehicle. They are difficult to duplicate and must be cut by a certified locksmith or dealer. They're not created using traditional keys. Instead, they're constructed from a small piece of steel that's shaped according to form a code in the factory and then cut using 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. The key can be folded up into the fob, or it can be removed by pressing a button. Keys like these are commonly used in German cars, and provide an extra layer of protection against car thieves. They also make it difficult for thieves to pick your vehicle or pick-lock it since the cylinder is extremely rugged and hard to break into. Smart Keys Keys Contrary to the conventional single piece of carved metal, smart keys utilize RFID, also known as radio-frequency identification for short, to communicate with the car. This means they have a tiny chip that contains an encrypted code that is unique to each key. The key sends a signal to the onboard computer of your vehicle every time you open the doors or open the trunk. The computer then will prompt the appropriate frequency to allow you to start your car. The chip inside the smart key comes with a variety of security features to protect it from theft. First auto car key replacement emits a very low-frequency signal that isn't detected by any receiver other than your vehicle. If the computer onboard detects this signal it will send a different one which is a unique code that only your car can understand. This prevents a tech-savvy criminal from using an external generator to “fool” the system and perform the work for other vehicles. Some smart keys offer special features, such as saving preferences for drivers and opening windows remotely, or the sunroof remotely and many other. This can be accomplished by activating the key's proximity sensor or pressing a button on the key itself, or, in some instances, by twisting a tiny metal component inside the key. Some key fobs can be opened by holding the dead key in a slot, or by placing it in proximity to an inductive coil that is located on the dashboard. Some key fobs feature an electronic (fully emergency) key blade that is inside the key. Replacing a smart key usually requires a visit to the dealership, where they will either have the replacement on hand or make it available for you to purchase. The dealer will also need to program the new key to recognize your vehicle. You can also visit a locksmith for the replacement key fob to be programmed and replaced. A locksmith may charge more than a dealer, but they'll likely be able to finish the job faster and for less.