LG Obstacle Detection Degradation

Robot vacuum frequently bumps into furniture harder than usual and does not slow down before impact.

Advertisements

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.

Advertisements

Possible Causes

Dirty front IR sensors, Faulty front ToF sensor, Bumper switches misaligned, Firmware behavior change after update

How to Fix / Troubleshooting

Safety first: Keep fragile items away while testing navigation.

  • 1. Clean front sensors and bumper: Wipe all front-facing sensor windows and ensure the bumper moves freely.
  • 2. Check bumper switches: Press along the bumper and listen for consistent clicking from the internal switches. If part of the bumper does not click, the switch or mounting may be damaged.
  • 3. Firmware check: Update to the latest firmware via the LG app, as navigation tuning is often improved in updates.
  • If the robot still fails to slow before obstacles, the front distance sensor or bumper switch assembly may need replacement.
Advertisements

Repair Difficulty

Medium 3/5

Required Part

Front Bumper Switch Assembly
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements