Navimow GPS Signal Weak: Fix RTK and Positioning Problems
Weak GPS or RTK status means the mower cannot establish a sufficiently reliable position. Start with sky visibility at the mower, antenna, and charging station before changing the map.
Reviewed by the RobotMower.help editorial team. Independent guidance based on the manufacturer source linked below.
Quick answer
Move the mower into open sky, inspect the antenna and station for nearby roofs, walls, dense trees, or metal, and wait several minutes for status to recover before remapping.
Illustrative troubleshooting image; not a manufacturer product photo.
Fix it in this order
- Test an open area
Drive or carry the mower to a safe open patch of lawn with a broad view of the sky. If the signal improves there, the original location is the main clue. - Inspect the antenna view
Look upward from the antenna. Roof edges, dense foliage, tall walls, and metal structures can block or reflect satellite signals. - Check station placement
The charging station should be level with a clear approach and open surroundings. A poor station location can create trouble at the beginning and end of every task. - Compare problem locations
Note whether weak status occurs everywhere or only beside one wall, tree canopy, passage, or building corner. Local failures point to obstruction rather than a systemwide fault. - Update and restart
Install current app and mower firmware when the mower is docked and stable, then restart before retesting. - Remap only last
Do not erase a working map first. Relocate hardware only when necessary and follow the app’s relocation/remapping process.
What usually causes this?
Physical obstructions, reflected satellite signals, poor antenna or station placement, outdated firmware, and hardware faults can all produce a weak positioning warning.
How to verify the fix
Positioning should remain stable at the station and along previously troublesome boundaries. Test a small zone under supervision before resuming the full schedule.
Do not skip this check: a cleared message is not proof of a repair. Confirm the mower completes the affected action under supervision before restoring unattended schedules.
When to contact support
Save screenshots from the signal analyzer, mark the exact yard locations involved, and provide the model, serial number, firmware versions, and photos of the antenna’s sky view.
Stop troubleshooting and contact the manufacturer if you find damaged wiring, swelling, burning odor, water inside electrical parts, or repeated failures after the documented checks.
Source and scope
Primary reference: Segway Navimow: weak GPS, RTK, and positioning signals.
RobotMower.help is independent and is not affiliated with or endorsed by Segway Navimow or Mammotion. Product behavior can vary by model and firmware.