Keys Replacement For Cars
If you have a standard mechanical key it is likely to purchase a replacement from any hardware store for affordable. However, the key will need to be programmed by a locksmith or dealership.
Smart keys are more complicated and require a visit to a dealer for the keys to be paired with your vehicle. These kinds of keys can be costly but some insurance companies will cover the cost.
Mechanical Keys
You can still purchase mechanical keys for cars which you put into an ignition lock cylinder to start your car. If your car has one of these, replacing the fob and keys is fairly inexpensive (if they are lost or stolen).
A locksmith can make you a new basic key for less than you would pay at a dealership. You can also ask a neighbour or friend who knows how to program transponder keys (which are less expensive than keys that are factory-made) to cut you a spare and have it programmed. It is essential to have a spare because modern cars won't begin if a key without the proper 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 of your vehicle. Your car will recognize the code that is on the chip, but it will not start if you try to use another code.

If the spare key you have has a chip, you'll need to bring it to a dealer to get it programmed. They will need to use a specific machine to cut the key and program it. These machines are only available at specific dealerships, and it's unlikely that a locksmith will have the equipment required to create an engraved key using a laser transponder.
It is expensive to replace keys using remotes, especially if require an extra. Try reprogramming the fob yourself if you're only missing the key shank and have a working replacement fob, but it can be difficult and time-consuming. If you've lost the entire key and fob but you're not sure you should seek out a dealer as the best option.
There are other kinds of keys for cars that require a specialized set of skills to replace, like flip keys and smart keys. They're more complicated and require replacement by a dealer. Certain key fobs operate by proximity sensors or a door opener with a spring loaded mechanism.
Transponder Keys
If your car was constructed in the last 10 years or so you're likely to use transponder keys. The keys are equipped with an embedded microchip and the receiver is programmed to communicate to start your vehicle.
Transponder keys can be a great way of deterring theft, as they require two parts to start the car - the transmitter contained in the key, and the receiver connected to the immobilizer. Without both the key and the immobilizer system being present the car will not start and it will be impossible to hotwire.
These key chips have an individual serial number specific to your vehicle. When the key is inserted into your ignition, the serial number is sent to the cars immobilizer and checked to ensure that it is in line, it will then allow the engine to start. This security feature can only be defeated by a special device that reads the chip and match it with another car.
When you get a transponder-related key replaced you'll need to go to a locksmith that has the necessary equipment to reprogram the keys to your vehicle. Some car dealerships offer this service as well but they are generally more expensive than a private locksmith because of their costs.
It isn't easy to get an entirely new key that has a chip. To program your car, the key must be programmed on a specific machine. It requires specialized software as well as the right key cutter to cut it correctly.
Some of the less complicated chip keys can be copied at most auto part stores but you must be aware of the serial number of the original key to ensure that the proper information is being programmed into the new key. Many people make the error of visiting a dealer to have a chip key copied and end up 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 key shank. They add an additional layer of security to your car. Keys like these are a great deterrent to auto theft because they require special equipment to duplicate.
They also have built-in chips to prevent the copying of keys by unauthorized people from starting your car. They also typically contain a unique code the key that must be programmed to your specific car in order to unlock it and start it. This extra layer of security is a great method to safeguard your investment and deter thieves who might be trying to steal your car for parts or to sell it to.
In terms of design, laser-cut keys are slightly different from conventional mechanical cut keys in that they have smaller grooves that have been carved out of the key. The key shaft is also thicker, which is another indication that this isn't a regular car key. Locksmiths typically use milling machines to cut keys. This kind of machine appears similar to a drill bit and is designed to remove metal with extremely precise and controlled angles.
They're among the most secure keys you can get for your car, because they're extremely difficult to duplicate and only cut by a locksmith who is a certified dealer. They're not made using traditional keys. Instead, they are made from a small piece steel that is cut to form a code in the factory, and then cut with a laser. This type of key is able to endure a lot of wear and tear, and is among the best options for protecting your vehicle.
Depending on the key, it can fold in the fob or be released at the touch of a button. These kinds of keys are typically used in German cars and offer an extra layer of security against car thieves. They also make it difficult for a thief to pick or pick-lock your car because the cylinder is extremely tough and is difficult to break.
Smart Keys
Unlike the traditional single piece of carved metal smart keys use RFID, or radio-frequency identification, to communicate with the car. This means that they are equipped with a tiny chip that contains an encrypted code that is unique to each key. Whenever automotive key replacement 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, allowing you to access your car and start it.
The chip of the smart key comes with a variety of security features to guard it from 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 transmit an additional signal that is a unique code that only your car is able to understand. This stops a tech-savvy criminal from using a pulse generator in order 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 remotely opening windows, the sunroof, among others. These features are accessible by activating the proximity sensor on the key fob by pressing a button or, in some cases it is as simple as twisting a tiny piece of metal inside the key.
Some key fobs can be opened by placing the dead key in a slot, or by placing it next to an inductive coil on the dashboard. Some key fobs feature mechanical (fully emergency) key blade in the key.
Replacing a smart key usually requires a visit to the dealership, where they will either have the replacement in stock or order it for you. They'll also have to program the new key to recognize the car you are driving. You can also go to an locksmith to get your replacement key fob to be programmed and then replaced. Locksmiths will cost more than a dealer however, they can do the job quicker and for less.