A fluid line quick connector serves to join fluid lines together in vehicle applications, as well as in industrial-manufacturing, aircraft, marine, and agricultural applications, among other possibilities. The fluid line quick connector has a retainer assembly with a primary latch and a secondary latch. A data matrix is provided, and can be in the form of a quick response (QR) code, as an example. In use, when the secondary latch is in the open position, the data matrix is partially or more concealed. And when the secondary latch is in the closed position, the partial or more concealment is absent and the data matrix can be properly read.