Elite ECUs have two lights: a Power LED that shows whether the ECU has power, and a Status LED that shows what the ECU is doing. Read them together. An unlit Status LED can mean everything is fine, or that the ECU has no power at all, and the Power LED tells you which.
| Status LED | Meaning | What we do |
|---|---|---|
| Off | Running normally, or no power | Check the Power LED. If it's lit, all is well |
| Solid red | A system error, or a firmware update in progress | If you're updating firmware, wait and don't unplug anything. Otherwise, connect ESP and check for errors |
| Slow orange flash | A map upgrade is in progress | Leave it alone until it finishes. Keep power and USB connected |
| Solid yellow | A hardware error | Stop and contact support. Don't keep trying to start the engine |
Don't interrupt updates
Losing power or USB during a firmware update or map upgrade is the most common way to turn a simple job into a recovery job. Use a battery charger or stable supply, and keep the laptop plugged in.
If the ECU won't talk to your laptop, the communications USB port article covers connection issues. For a red or yellow light you can't clear, contact us with a photo of the LED and your ESP connection status.
