EcuTek vehicle interface LED colours

This only applies to recent models. Others will use a different colour coding. Please check that the model written on the label on your device is either EVI-USB or EVI-BT.

The status LED will indicate the Vehicle Interface status in different operating conditions. Here's a summary of the possible colours.

Colour	State	Notes
Off	Unpowered
Off	Deep sleep	Powered from PC via USB but PC in standby *
Green, glowing every 5 sec.	Sleep	Powered from car battery via OBD socket
Blue	Bluetooth connected	(EVI-BT only)
Green	USB connected
Red	OBD TX/RX
Red, glowing every 1 sec.	Firmware update mode

* LED and Bluetooth (EVI-BT only) are disabled in deep sleep to meet USB standard power requirements.