The short answer is that you can create a duplicate key from scratch even without the original key. Locksmiths use code cutters to detect the depth of the slots in a lock's key code and use this information to create the correct key. Therefore, it is best to hire a professional and experienced locksmith to make a replacement key for you, even if you don't have the original one. It doesn't matter where you are or what type of vehicle you need help with; the services of a qualified professional extend to scooters, trucks, vans, caravans and motorcycles.
Getting a replacement key at your car dealership can work, but you could pay much more than if you had gone to an automotive locksmith. In addition to that, an automotive locksmith can program your replacement keychain if that's the problem. Key codes may be available on the lock cylinder itself, on a label or other document attached to the product where the cylinder is located, or, in the case of the automotive industry, somewhere on the vehicle body. You can order a basic car key without a transmitter if you already have another key to operate the vehicle. It's crucial to understand the key duplication limitations listed above before hiring a locksmith. Even if you've lost your key and don't have a backup, you can get a replacement one from a professional locksmith.
In cases where the locksmith has free access to a cylinder, another way to make a key is to disassemble it (very carefully) and then measure the pins or wafers inside to determine where the cuts should be in a working key. A locksmith can also program transponder keys using a programming machine in addition to basic, laser-cut keys. If you're in a situation where you need to have a car key made for you, the first step is to determine what type of key you'll need. If the code matches a valid system, the software tells the locksmith how to cut the key with one of its key cutting machines. If there is no risk that the lost key could match the one in the house again, it will be much less expensive to decode a single lock cylinder to produce a new key, which works with all existing locks, than to reopen all those locks with a new key.
Then, the locksmith will need to determine which is the correct code to use and which is the correct key to use, by inspecting the lock. If you lost your car key and don't have the original one, visiting an automotive locksmith can be an economical option. Brisbane Northside locksmiths still have options for making a new key when one is lost despite not having the original one.