Brian B De Pere , WI August 17, 2021 Appliance: LG Washer WM2455HW Lg Washer Wm2455hw / : Door lock error (de). How to replace Washer Door Lock Switch. Removed the tub seal, removed old switch and replaced with new switch; re-installed tub seal. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes