Dreame Cliff Sensor Degradation

Robot vacuum does not detect or avoid stairs and edges reliably, risking falls.

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.

Possible Causes

Dust buildup on cliff sensors, Dark or reflective flooring confusing sensors, Faulty cliff sensor board, Loose sensor wiring

Safety: Immediately stop using the robot near stairs until the issue is resolved.

Clean cliff sensors: Wipe all underside cliff sensor windows with a soft, dry cloth.
Test on safe surface: Place the robot near a low step or dark rug and observe its behavior while ready to catch it.
Adjust environment: Avoid using the robot on black carpets or highly reflective floors that can mimic a drop.
Hardware replacement: If the robot still fails to detect edges, replace the cliff sensor board and verify wiring to the main board.

Hard 4/5

Cliff Sensor Board

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