Error 4103 means communication was interrupted and the X4 could not continue communicating normally.
Reviewed October 7, 2026 by RobotMower.help. Independent guidance checked against the official support source linked below.
Press STOP to clear the code and restart the mower once if it returns. Escalate a repeated 4103 with the exact time and serial number.

| Mower | Navimow X4 |
|---|---|
| Code | 4103 |
| What the official steps point to | Communication Interrupted Error |
Navimow describes 4103 as a temporary communication loss. The owner-facing correction is intentionally narrow: clear the code, then restart if needed. A repeat fault needs support evidence rather than repeated resets.
Do not perform repeated factory resets for a communication interruption. Preserve the sequence of alerts so support can identify which link failed first.
The mower should remain online and accept normal commands without 4103 returning.
If the same code returns, record the exact time, mower location, indicator status and any earlier alert. That sequence is more useful to support than repeated resets.
Contact Navimow if 4103 continues after one restart. Send the serial number, date, time and a video or screenshots.
It means communication was interrupted.
Yes. Navimow recommends restarting if clearing the code does not resolve it.
Record the serial number and exact date and time, plus screenshots or video.
Primary reference: official Navimow support guidance for 4103.
RobotMower.help is independent and is not affiliated with or endorsed by Navimow. This guide explains owner-safe checks and does not replace the manufacturer manual or professional service.