Sentence examples for car keys from inspiring English sources

The phrase "car keys" is correct and commonly used in written English.
It refers to the keys that are used to start and unlock a car. Example: "I couldn't find my car keys this morning and ended up being late for work." Here, the speaker is referring to the specific keys used for their car. "Car keys" can be used in any context where one needs to specify the keys used for a car, such as in a conversation about losing them, needing to borrow them, or even describing a set of keys.