Reading the status LED
Alongside the power LED, the Elite has a status LED that reports what the ECU is doing. It uses color and flash pattern to tell you whether things are normal, busy or faulty.
| LED | Pattern | Meaning | What we do |
|---|---|---|---|
| Off | Steady | Either the ECU has no power, or everything is working normally | Check the power LED to tell the two apart |
| Red | Steady | A system error, or a firmware update is underway | If you're updating firmware, leave it alone until it finishes. If not, connect with ESP and check for errors |
| Orange | Slow flash | A map upgrade is in progress | Wait. Don't disconnect power or USB |
| Yellow | Steady | Hardware error | Stop and contact us before driving |
Tips
Note that "off" is the normal state. People often assume a dark status LED means a dead ECU, but a healthy, running Elite shows nothing here. Always read it together with the power LED.
Red and orange during an update are expected. What matters is never cutting power while either is showing. Keep the laptop plugged in and the car on a stable supply. If the LED stays red after an update has clearly finished, or you see yellow at any time, get in touch and we'll help work out what's wrong. If you're just starting out, see initial ECU setup.




