Robot mower frequently stops with a message about an obstacle, but nothing is in front of it (no code shown).

Safety first: Stop the mower and turn OFF power before cleaning sensors.

• Clean sensors and bumper: Wipe ultrasonic sensors and ensure the bumper moves freely.
• Adjust working area: Remove or cover highly reflective objects (e.g., metal plates, glass) in the mowing path.
• Change mowing time: Schedule mowing for times with less direct, low-angle sunlight if sensors are affected.
• Check sensor mounts: Tighten any loose sensor brackets inside the housing.