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Navimow i2 AWD Error Code 3109: Wheel Motor Current Protection
The mower detected excessive current in one of its wheel motors, which can be caused by an obstruction or excessive load.
Reviewed October 6, 2026 by RobotMower.help. Independent guidance checked against official manufacturer documentation.
Quick answer
Press STOP to clear the alert. Check externally for packed grass, string, mud, or another wheel obstruction. If the error persists, restart the mower once. Contact Navimow support if it returns.
Error 3109 at a glance
| Code | 3109 |
|---|---|
| Official meaning | Wheel Motor Current Protection |
| Common condition | A wheel obstruction or excessive drive load |
What error 3109 means
The mower measured overcurrent in a wheel motor. That protection can activate when a wheel is physically blocked or heavily loaded. The code does not prove that the motor itself must be replaced.
Fix Navimow i2 AWD error 3109 step by step
- Press STOP. Make the mower safe before inspecting it.
- Record the code and location. Note whether the mower was on a slope, in deep grass, mud, or against an object.
- Power down and inspect externally. Check both wheels for packed grass, twine, mud, stones, or another visible obstruction.
- Remove only loose debris. Do not force the wheel or open the motor housing.
- Restart once if the wheels are clear. Run a short supervised test on level ground.
- Escalate a repeat alert. Provide the serial number, date and time, and a video to Navimow support.
How error 3109 differs from similar codes
Error 3109 concerns wheel-motor current protection. Compare error 3110 for a wheel motor error, error 7102 for wheel-encoder data, and error 6108 when the mower reports that it cannot move.
For symptom-first diagnosis, use the Navimow i2 AWD not moving guide.
Safety and mistakes to avoid
Power the mower off before checking the wheels or underside. Do not reach beneath an active mower, force a wheel, open a sealed motor, or repeat restarts while the wheel remains blocked.
Frequently asked questions
What does Navimow i2 AWD error 3109 mean?
It means the mower detected excessive current in one of its wheel motors.
Can grass cause error 3109?
Yes. Packed grass or another obstruction can increase wheel-motor load. The official description also notes excessive load as a possible cause.
When does error 3109 need service?
Contact support if the wheels are clear and the code persists after one restart, or if it returns during a short test on level ground.
Related Navimow guides
- Navimow troubleshooting hub
- Navimow i2 AWD not moving
- Navimow i2 AWD steering problem
- Navimow i2 AWD error-code guide
Primary source
Segway Navimow support documentation for error 3109. RobotMower.help is independent and is not affiliated with Segway Navimow.
Broader diagnostic guide
If you started with the mower behavior rather than the code, use our guide to Navimow i2 AWD not moving. It compares this alert with similar i2 AWD faults.