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You can purchase an alternative key for a mechanical key in any hardware store. The key needs to be programmed by a dealership or locksmith.
Smart keys are more complicated and require a visit to the dealer to pair them with your vehicle. These keys are expensive however, many insurance companies will pay for the cost.
Mechanical Keys
You can still purchase mechanical car keys, the ones that you insert into an ignition lock cylinder to start your car. If your car is equipped with one of these keys, it's cheap to replace the key and fob (if lost or stolen).
A locksmith can make you new keys at a lower cost than what you purchase from a dealership. You could also ask a friend or neighbor that knows how to program transponder keys that are made for the aftermarket (which are less expensive than keys from factory) cut keys for you and then program them. Getting a spare is important because modern cars won't start when a key that isn't programmed with the proper chip is used.
Transponder keys appear like mechanical keys, however they contain a hidden electronic chip inside the base of their plastic design that communicates with the computer system in your vehicle. Your car will recognize the code inside the chip and accept it, however it will not start if another code is used.
If the spare key you have has chips, you'll have to bring it to a dealer to get it programmed. The dealership will need an exclusive machine for cutting and programming the key. These machines are only available at specific dealerships, and it's not likely that a locksmith has the equipment needed to create a laser-cut key with a transponder.
Keys with remotes are expensive to replace, particularly in the event that you need an extra. You can try reprogramming your fob by yourself if you're missing the shank of the key and have a functioning
replacement car keys with chips fob, however it can be time-consuming and difficult. You're better off going to an expert 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, like flip keys and smart keys. They are more complicated and typically need to be replaced at the dealership. Some key fobs have an electronic key that folds into the enclosure and opens a door, or they're operated with a proximity sensor to open and start your car.
Transponder Keys
If your car is built in the last 10 years or so it's likely to have a transponder key system. The keys contain a microchip in the key and an internal receiver in your car that both have been programmed to communicate with each other to start the car.
Transponder keys are an excellent way to stop theft because they require two parts for the
car keys lost replacement to be started which 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 it is not possible to connect hotwire.
These key chips are programmed with a serial number that is unique to your vehicle. The serial number of the key is sent to the immobilizer in the car and verified to match. If it does, the engine will start. The only thing that can stop this security feature is a special device that is able to read the chip and match it to another vehicle.
You'll have to find a locksmith that has the equipment needed to reprogram your key. Some car dealerships offer this service too, but they are generally more expensive than a independent locksmith due to their expenses.
It isn't easy to find a new key with chip. To program your car, the key has to be programmed on a specific machine. It requires specialized software as well as the right key cutter to cut it correctly.
Some of the simpler chip keys can be copied at most auto part stores but you must know the serial number of the original key to ensure the proper information is being transferred to the new key. Many people make the error of visiting a dealer to have a chip key copied and end in paying more than they have to.
Laser-Cut Keys
Laser-cut keys, referred to as sidewinder keys because of their distinctive winding cuts to the shank of the key they add a layer of security to your vehicle. They are a fantastic deterrent to auto theft because they require special equipment to duplicate.
They also have built-in chips to stop the copying of keys by unauthorized people from starting your vehicle. They also typically contain a unique code the key that must be programmed for your specific car in order to unlock it and start it. This extra layer of security is a great option to protect your investment and deter thieves who may be trying to steal your vehicle for parts or to sell it.
Laser-cut keys differ slightly from mechanically-cut keys in terms of design. They have fewer grooves cut on the key. They also have a more robust key shaft that is an indication that it's not a regular car key. Locksmiths usually use a milling machine to cut keys. This machine is similar to a drill, and is designed to remove metal with precise angles.
These are the most secure keys that you can purchase for your vehicle. They're hard to duplicate and must be cut by a licensed locksmith or dealer. In contrast to traditional keys, they're made from a small piece of steel that is cut into a shape and then cut with a laser in the factory. This kind of key is able to be able to withstand a great deal of wear and tear and is one of the best options to protect your vehicle.
The key can be folded in the fob, or be released by pressing the button. These keys are used in German cars and offer an extra layer of protection against car thieves. They also make it extremely difficult for thieves to pick or pick-lock your car since the cylinder is extremely rugged and hard to break into.
Smart Keys
Unlike the traditional single piece of metal, smart keys make use of radio-frequency identification, or RFID to connect with the car. They have a chip with an individual code, which is encoded on each key. Whenever you unlock your car doors or pop the trunk, the key sends a signal to the vehicle's computer onboard. The computer will then signal the right frequency that allows you to start your vehicle.
The smart key's chip has a number of security features that protect against theft. First the key emits a low-frequency signal that isn't received by any receiver but your vehicle. If the onboard computer detects this signal, it will trigger an alternative one that's an exclusive sequence that only your car can recognize. This stops a cyber-savvy criminal from using an external pulse generator to "fool" the system and make the key work for other vehicles.
Some smart keys have specific features, like the ability to store preferences for drivers and opening windows remotely, or the sunroof via remote and many more. These are accomplished by activating the key fob's proximity sensor by pressing a button on the key itself, or, in some instances, by twisting a tiny metal part inside the key.
The majority of these key fobs come with a button that can unlock the doors for themselves however some come with an additional method to open them by a slot or placing the dead key in the dashboard, where it houses an inductive coil that can transfer energy. Some even include an emergency (fully mechanical) key blade that is hidden inside the key to enable this.
Replacing a smart lock typically requires a visit to the dealership, where they will either have the replacement on hand or make it available for you to purchase. They'll also need to program the new key to recognize the car you are driving. But, you can visit a locksmith to have your new key fob programmed and replaced. A locksmith will charge more than dealers, but they will complete the task faster and for less.
