Blink codes for HEX-V2 (HEX-V2 status indicator)

VCDS HEX-V2: LED Colors and Their Meaning – Simple Explanation of Status Indicators

The status indicator on the VCDS HEX-V2 diagnostic interface provides information about the current operating status through different LED colors. Knowing the meaning of the VCDS HEX-V2 LED indicators allows you to quickly identify connection problems or vehicle errors.

A green LED indicates that the HEX-V2 is connected to both the vehicle via OBD2 and to the PC via USB, and is fully functional. If the LED is blue, there is only a connection to the PC – the vehicle is not connected. Yellow indicates that the connection to the vehicle is active, but there is no connection to the PC. A red LED indicates a connection error to the vehicle, often caused by a faulty K-line (e.g., a radio incorrectly connected to the K-line).

Flashing red/green LEDs indicate active communication and ongoing data transfer. When the HEX-V2 diagnostic tool is turned on, the LED flashes briefly green to indicate a successful boot process.

The clear diagnostic system status display significantly simplifies the use of VCDS. Knowing the HEX-V2 LED colors allows for faster identification and resolution of errors.


LED colorInterface is connected to both the vehicle and the PC and ready for useInterface is connected to the PC, but not to the vehicleInterface is connected to the vehicle, but not to the PCError connecting to the vehicle (usually a K-Line problem)Active communication and data transferBoot process: one LED flashes green for 2 seconds, the other remains off

Meaning	Green
	Blue
	Yellow
	Red
	Flashing Red/Green
	Flashes green during startup