Whether you need a spare key, a new remote, or you're simply curious about how key fobs work, understanding the basics can make finding the right solution much easier.
Here's what every vehicle owner should know about key fobs.
What Is a Key Fob?
A key fob is an electronic remote that communicates with your vehicle to lock, unlock, and in many cases start the engine. Most key fobs work by sending a unique radio signal that your vehicle's receiver recognizes, which is why a key fob has to be matched and programmed to your specific vehicle rather than any car of the same model.
Depending on your vehicle, your key fob may also include an emergency insert key for manual access, a transponder chip that communicates with the engine's immobilizer system, or push-button start functionality.
Different Types of Key Fobs
Not every vehicle uses the same type of key. Some of the most common include:
Remote Head Key Fobs — a traditional metal key blade combined with remote buttons in a single unit, common on many vehicles that still use a physical key to start the engine.
Flip Keys — similar to a remote head key fob, but the key blade folds into the housing when not in use.
Smart Keys — used with push-button start systems. The key stays in your pocket or bag, and the vehicle detects its presence to unlock and start.
Keyless Entry Remotes — separate from the ignition key, used only for locking, unlocking, and other remote functions.
The type of key your vehicle uses depends on its year, make, model, and trim level.
Do Key Fobs Need Programming?
In most cases, yes. Most key fobs must be programmed before they'll communicate with your vehicle.
Some older vehicles support self-programming, while many newer models require an automotive locksmith or dealership.
How Do I Know Which Key I Need?
The easiest way to identify the correct key is by comparing your:
FCC ID
OEM Part Number
Button Configuration
Vehicle year, make, and model
Matching this information helps ensure you're ordering the correct one.
We're Here to Help
OEM Car Key Mall offers genuine OEM key fobs for thousands of vehicles.
If you're not sure which key fits your vehicle, contact us with your vehicle's year, make, and model. Our knowledgeable team will help you find the correct OEM key before you order.
