Understanding modern car keys

Car keys have changed dramatically over the last 30 years. Most people don't know what type of key their vehicle uses - and that's fine. This guide breaks down the three most common types so you know what you're dealing with.

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What type of key does your car use?

Transponder keys

A standard-looking key with a chip hidden in the plastic head. The chip communicates with your car's immobilizer to allow the engine to start. Most common key type on vehicles built after the mid-1990s
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Fobik keys

A remote and key combined into one unit that plugs into a slot on the dash. Most common on Chrysler, Dodge, and Jeep vehicles. No traditional key blade - though many contain a hidden emergency key.
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Push-to-start / smart keys

A proximity-based fob that stays in your pocket. The car detects the key automatically and starts with the push of a button. No traditional ignition cylinder.
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What does your key look like?

Transponder key

Looks like a traditional car key but with a thicker plastic head. Has a metal blade that goes into the ignition. No buttons on some models - others combine the transponder with a remote head.

Fobik key

Looks like a small remote with a square plug on one end instead of a key blade. Plugs into a slot on the dashboard. May have a small emergency key hidden inside.

Push-to-start / smart key

Fob-shaped with no visible key blade. Your car has a push button instead of a traditional ignition. May have a hidden emergency blade for manual door entry.

Need a key programmed? We'll come to you.

Need a key programmed? We'll come to you. Skip the dealer. Skip the guesswork. Call Knox Car Keys and we'll handle the programming on-site.

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