Just as there are many makes and models of vehicles, there are also several types of auto keys. If you need a car key replacement, the service may differ depending on the model you have. Here's more information about common versions to help you know what to expect.

What Keys Do Cars Use?

1. Mechanical 

Most older vehicles rely on plain metal mechanical keys. With these standard options, drivers turn their keys inside ignitions and car doors to access their vehicles and drive.

Unlike their modern counterparts, mechanical keys are only secured by their unique edge pattern. A locksmith will duplicate the design whenever you need a car key replacement.

2. Valet 

Valet keys are useful for individuals who rely on others to drive or park their cars. They work like mechanical units, but can’t open locked trunks, glove compartments, or center consoles. 

Some modern vehicles come with standard and valet keys to give drivers this option. If you need a spare one, a locksmith will also simply duplicate the pattern.

3. Remote 

For the past 30 years, most cars have been equipped with remote key fobs. These battery-operated devices lock and unlock doors through buttons. 

In addition to providing keyless entry, remotes are usually fitted with metal mechanical keys that fit into ignitions. Locksmiths duplicate the patterns of the mechanical sections to give drivers new sets.

4. Proximity 

These devices build off the fob design, resembling remotes with standard buttons to lock and unlock. Instead of using metal mechanical parts, they rely on transponder mechanisms that allow drivers to start cars through buttons. They use batteries, so you may need to replace them if the key stops working. 

5. Transponder 

Introduced in the early 2000s, transponders feature mechanical or switchblade keys attached to plastic casings. Radio-frequency identification chips inside them emit unique signals when drivers turn the keys in their ignitions. These frequencies communicate with electrical systems, giving vehicles permission to start. If you have this model and require a replacement, you'll need a locksmith who knows how to program it.

If you need a car key replacement, turn to One Call Lock & Key. Serving drivers throughout Austin, TX, and the surrounding area, this mobile locksmith will come to your location to swiftly cut and program your keys. They’re also able to unlock vehicles if you’ve forgotten your set inside. Visit them online to learn more about their convenient services, or call (512) 353-1112 to request assistance.