Display shows “Error 21 – Remote start problem” when trying to start from a remote area via guide wire.

Safety first: Switch OFF the mower before adjusting wiring.

• Check settings: In the mower menu or Gardena app, review the remote start settings and distances. Reset to default values and test.
• Inspect guide wire: Verify the guide wire is intact and correctly routed through the remote start area.
• Adjust boundary distance: Ensure the boundary wire is laid at the recommended distance from the guide wire to avoid signal interference.
• Test local start: Start the mower from the charging station to confirm basic operation, then re-test remote start.

If remote start errors persist with correct wiring, consult Gardena support for firmware updates or advanced diagnostics.