Blink codes for HEX-NET (HEX-NET status LED)

VCDS HEX-NET: LED Colors and Their Meaning – Quick Explanation of Status Indicator

The VCDS HEX-NET has three LEDs that indicate the status of the diagnostic interface. These are: the vehicle LED (slightly offset to the left), the Wi-Fi LED (in the center), and the CPU LED (on the right). The correct interpretation of the HEX-NET LED colors enables quick error analysis and simplifies troubleshooting.

A green vehicle-LED indicates that the ignition and K-line are working correctly. If the vehicle-LED flashes red or remains off, there is a short circuit on the K-line, and a warning sound will be emitted. If the vehicle-LED flashes red/green, active communication with the vehicle is taking place. If the vehicle's LED is off, it indicates that there is no power or connection.

The CPU LED indicates normal CPU activity with green blinking, while a constant red indicates high CPU utilization. The CPU LED blinks blue, indicating that the HEX-NET supports the modern DoIP (Diagnostics over IP) mode.

The Wi-Fi LED is orange when the HEX-NET is in access point mode. A red blinking light indicates that a connection to the Wi-Fi network is being sought. A green LED indicates a successful network connection.

If all the LEDs arered, the HEX-NET transmits data to the flash memory – during this phase, no power interruption is allowed.

Vehicle LEDLights greenIgnition on, K-Line OKVehicle LEDFlashes red or LED offShort circuit K-Line, alarm sound is heardVehicle LEDFlashes red-greenInterface is communicating with the vehicleKER}

LED	Status	Meaning
Vehicle LED	LED off	Ignition off, no communication possible
CPU LED	Flashes green	Normal CPU activity
CPU LED	Lights red	CPU is overloaded
CPU LED	Flashes blue	DoIP support is enabled
Wi-Fi LED	{Lights orange	Access Point mode active, own Wi-Fi signal, no internet
Wi-Fi LED	Blinking red	Infrastructure mode, connection being searched for
Wi-Fi LED	Lights green	Infrastructure mode, connection established
All LEDs	Lights red	Data transfer to flash memory, do not disconnect!
Vehicle & Wi-Fi LEDs off, CPU LED blinking green	-	HEX-NET in Sleep Mode