What to do if the Xiaomi Robot Vacuum S40 Pro reports a bumper error?

If the Xiaomi Robot Vacuum S40 Pro reports a bumper error, please refer to the following steps to troubleshoot:
  1. Tap the bumper to confirm that it can bounce back properly
  2. Check if the wheels are slipping or tangled with foreign objects. Move the robot vacuum to a new surface and try again.
  3. Check if the bumper sensor area is blocked by dust or debris and clean it gently with a dry cloth.
  4. Restart the robot vacuum to reset the sensor system and see if the error persists.
  5. Ensure the robot vacuum is placed on a flat and stable surface before starting cleaning.
  6. Update the firmware via the Xiaomi Home App to ensure the latest navigation improvements and bug fixes are applied.
  7. If the bumper error continues after these steps, contact after-sales service for professional assistance.

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