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Keys Replacement For Cars If you have a basic mechanical key you should be able to find a replacement at any hardware store for inexpensive. The key must be programmed either by a locksmith or dealer. Smart keys are more complex and require a visit to a dealer for the keys to be paired with your car. These kinds of keys are typically expensive, but some car insurance companies cover the cost. Mechanical Keys You can still purchase car keys that are only mechanical, such as the ones you insert into an ignition lock cylinder, and turn to start your car. If your car is equipped with one of these keys, replacing the key and fob is fairly inexpensive (if they get lost or stolen). A locksmith can make an entry level key for you at a less price than you would pay in the dealership. You could also have your neighbor or a friend who is proficient in programming transponder keys from the aftermarket (which are cheaper than factory keys) cut keys and program them. It is essential to have a spare key since modern vehicles won't start if the key does not have the correct chip. Transponder keys resemble mechanical keys, but have an electronic chip hidden inside the base. This chip communicates with the computer system of your vehicle. Your car will be able to recognize the code contained in the chip and accept it, but it will refuse to start if any other code is utilized. If your spare key has chip, you'll need to bring it to a dealership to have it programmed. The dealership will require a special machine for both cutting and programming the key. These machines are only available through certain dealerships, and it's unlikely that a locksmith has the equipment required to create an engraved key using a laser transponder. Keys with remotes cost a lot to replace, particularly in the event that you need an extra. Try reprogramming the fob on your own if you're just missing the shank on the key and you have a functional replacement fob, but it can be time-consuming and laborious. If you've lost the complete key and fob but you're not sure it's best to contact a dealer as your best bet. 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 typically need to be replaced at the dealership. Key fobs can be operated by proximity sensors or a door opener with a spring loaded mechanism. Transponder Keys If your car is built in the past 10 years or so, it's likely to have transponder keys. The keys contain a microchip within the key and the car's receiver that both have been programmed to communicate with one another to start the vehicle. Transponder keys are a great way to discourage theft because they require two parts for the car to be started that is the transmitter (transponder) inside the key and the receiver 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 connect hotwire. The key chips come with an unique serial number that is specific to your vehicle. When the key is inserted into the ignition the serial number is transmitted to the cars immobilizer and verified that it is compatible, it will then allow the engine to run. The only thing that could defeat this security feature is a device that can read the chip and match it to another car. You'll have to find a locksmith who has the tools to reprogram your key. Some car dealerships also offer this service, but their overheads make them more costly than an independent locksmith. It isn't easy to get an entirely new key that has a chip. The key needs to be cut on a specific machine in order to have the correct tracks in place that can be programmed to assign the key to your car. This requires specific software and the right key cutter in order to get it done properly. Certain of the more basic chip keys can be cloned at most auto part stores but you must know the serial number of the original key to ensure that the correct information is transferred to the new key. Many people make the mistake of visiting a dealer to have their chip key copied and end in paying more than they should. Laser-Cut Keys Laser-cut keys are also known as a sidewinder key due to the distinctive winding cut on the shank of the key. They add an additional layer of security to your car. Because it takes specialized machinery 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 that must be programmed to your specific vehicle in order to allow it to be opened and started. This extra layer of security will protect your investment and stop thieves from trying to steal your vehicle for parts or to resell 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 thicker key shaft, which is a good indication that it's not your typical car key. Locksmiths generally use a machine called milling tool to cut these types of keys. This kind of machine appears similar to a drill bit and is designed to remove metal at very precise and controlled angles. These are some of the most secure keys you can purchase for your vehicle, since they're extremely difficult to duplicate and can only be cut by a locksmith who is a certified dealer. Unlike car fob replacement key , they're made using a small piece of steel that is cut into a shape and then cut with a laser at the factory. This type of key is extremely durable and is able to be able to withstand a lot of wear and tear which makes it one of the best options to protect your car. Depending on the key, it could fold in the fob, or pop out by pressing the button. The keys are typically used in German cars, and provide an additional layer of protection against car thieves. They also make it extremely difficult for thieves to pick or pick-lock your vehicle since the cylinder is extremely tough and is difficult to break. Smart Keys Keys Contrary to the conventional single piece of carved metal, smart keys make use of RFID, also known as radio-frequency identification, to communicate with the car. They come with a chip with an individual code, which is encoded on every key. The key sends a message to the onboard computer of your vehicle every time you open the doors or open the trunk. The computer then will prompt the correct frequency to allow you to start your car. The smart key's chip also comes with a variety of security features to guard against theft. The key emits an extremely low-frequency signal, which will only be detected by your vehicle. If the computer onboard detects this signal it will transmit another one that is a unique code that only your car is able to understand. This stops a tech-savvy criminal from using an electronic pulse generator to “fool the system” and make the key work on other vehicles. In addition to locking and starting the car, certain smart keys come with additional features such as storing particular driver preferences remote opening windows or the sunroof, among others. These can be done by activating the key's proximity sensor or pressing a button on the key or, in some cases, twisting a small metal component inside the key. Most of these key fobs come with buttons that open the doors on their own However, some key fobs have another method of opening them: a slot or holding the dead key in the dashboard, where it is able to hold an inductive coil that can transfer energy. Some even come with an emergency (fully mechanical) key blade hidden in the key to allow this. To replace a smart key, you'll need a trip to the dealer, who will either order the replacement or stock it. The dealer will also need to program the new key so that it recognizes your vehicle. However, you can also visit a locksmith to have your replacement key fob programmed and replaced. A locksmith may charge more than the dealer, but they'll likely be able to do the job quicker and less expensively.