Robot lawnmower starts but stops after a few meters without any error code on display.

Safety first: Turn OFF the mower and disconnect the battery before handling internal wiring.

• Inspect battery plug: Ensure the battery connector locks firmly into the mainboard socket.
• Check for pinched cables: Look for harnesses that may be squeezed between housing parts, especially near the wheels and deck.
• Gently wiggle test: With the mower powered ON (exercise caution), gently tap or wiggle the housing near sensors and the mainboard to see if movement causes shutdown. This can help locate a bad connection.
• Reseat connectors: One by one, unplug and replug sensor and motor connectors on the mainboard.

If the mower continues to stop randomly without logging an error, the mainboard or a specific sensor may be failing and should be diagnosed by a technician.