Honda
Over‑sensitive Bumper / Obstacle Detection
Robot mower stops with a message about obstacle or collision more often than expected.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Misaligned front bumper, Weak or broken bumper springs, Debris causing constant contact, Faulty bumper switch
How to Fix / Troubleshooting
Safety first: Turn OFF the mower before working near the bumper.
- Inspect bumper gap: Ensure there is an even gap between bumper and chassis all around.
- Clean gap: Remove grass, twigs, or stones lodged between bumper and body.
- Check springs: Replace any stretched or broken bumper springs.
- Test switches: With the mower powered (blades disabled), gently press the bumper and confirm it triggers only when pressed, not at rest. Replace the bumper sensor assembly if it triggers constantly.
Correct bumper operation is essential for safe navigation; do not bypass these sensors.
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Repair Difficulty
Medium
3/5
Required Part
Front Bumper Sensor Assembly
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