How to Reset Your LG Refrigerator Water Filter

Reset the water filter indicator light in three steps

Most LG refrigerators have a water filter indicator light that turns on when the filter needs replacing. After you install a new filter, you reset the light by holding a button on the control panel — usually for three to ten seconds, depending on your model. The light goes dark, and the refrigerator tracks the new filter's life from that moment.

The reset button is almost always labeled "Water Filter Reset," "Filter Reset," or sometimes just "Reset." On some models it is a dedicated button; on others it shares space with another control. Your owner's manual will show you the exact location and the hold time for your specific refrigerator.

Resetting the indicator does not clean the filter or change its function — it simply tells the refrigerator's computer that you have installed a fresh filter and resets the usage counter to zero. If you skip this step, the light will stay on even though your new filter is working normally.

Key Takeaways

• The water filter reset button is on your refrigerator's control panel, usually labeled "Water Filter Reset" or "Filter Reset," and you hold it for three to ten seconds.
• Resetting the indicator light after installing a new filter tells the refrigerator to start counting the new filter's lifespan from the beginning.
• If you do not reset the light, it will remain on even though your new filter is working correctly.
• Your owner's manual shows the exact button location and hold time for your model, since LG uses different control panel layouts.
• The reset does not affect water flow, ice quality, or filter performance — it only silences the indicator light.

Locate the reset button on your control panel

Open your refrigerator door and look at the control panel. On most LG models, the water filter reset button is on the upper right side of the interior panel, near the ice and water dispenser controls. Some models place it on the exterior panel above the water dispenser opening.

The button is usually small and round, about the size of a pencil eraser. It may be labeled with text, an icon, or both. If you cannot find it by looking, check your owner's manual — search for "water filter reset" in the index or table of contents. The manual will show a diagram of your exact control panel layout.

If your refrigerator is a French-door or side-by-side model, the button location may differ slightly. Some LG models have the reset function built into a touchscreen display instead of a physical button. In that case, you navigate to a menu option labeled "Filter Reset" or "Water Filter" and select it.

Install your new filter before resetting

Always install the new water filter cartridge before you reset the indicator light. The reset tells the refrigerator that a fresh filter is in place, so resetting without installing a new filter will cause the light to come back on prematurely.

To install a new LG water filter, locate the filter housing — usually in the upper right corner of the refrigerator interior or in the base grille below the front. Twist the old filter counterclockwise until it comes free, then twist the new filter clockwise until it stops. Do not force it; hand-tight is correct.

After installation, run water through the dispenser for 30 seconds to flush air from the new filter. This removes any carbon dust and ensures clean water from the first glass. Then proceed to reset the indicator light.

Hold the reset button for the correct duration

Press and hold the water filter reset button. The hold time varies by model — most LG refrigerators require three to ten seconds. Some models beep or flash a light to confirm the reset; others simply turn off the indicator light silently.

If nothing happens after ten seconds, release the button and try again. If the light remains on after a second attempt, check your owner's manual to confirm you are holding the correct button. Some models require you to hold the button while the refrigerator is in a specific mode or while a door is open.

Once the indicator light goes dark, the reset is complete. The refrigerator will now track your new filter's usage and turn the light back on after approximately six months of use, depending on your water consumption and filter type.

Confirm the reset worked

After you release the button, the water filter indicator light should turn off or change color. On some models it changes from red to green. On others it simply disappears. If the light is still on after 30 seconds, the reset may not have taken.

Try the reset one more time, holding the button for the full duration listed in your manual. If the light still does not turn off, the button itself may not be registering your press — try pressing it more firmly or more slowly. If it still does not work, contact LG customer service with your model number; a faulty reset button is rare but possible.

Once the light is off, your refrigerator is ready to use normally. The new filter is active, and the indicator will track its lifespan from this point forward.

What to do if you cannot find your manual

If you do not have your owner's manual, you can find it online. Visit the LG website, go to the Support section, and enter your refrigerator's model number. The model number is usually on a sticker inside the refrigerator, on the back wall or in the vegetable drawer. Download the PDF manual and search for "water filter reset."

You can also call LG customer service at 1-800-243-0000 (in the United States). Have your model number ready, and they will walk you through the reset process over the phone. This takes about five minutes and costs nothing.

If you are in a hurry and cannot reach LG, try holding the reset button for five seconds — this is the most common duration across LG models. If that does not work, wait until you have the manual before trying again, to avoid accidentally triggering a different function.

Frequently Asked Questions

What happens if I reset the water filter light without installing a new filter?

The indicator light will turn off, but the old filter will continue to work. The refrigerator will not know that the filter is actually old, so the light will not come back on until the timer runs out again — usually six months later. Your water quality may suffer during that time if the old filter is clogged or saturated.

Does resetting the filter affect ice production or water flow?

No. Resetting the indicator light only silences the warning — it does not change how the filter works or how water flows through it. Ice and water quality depend on the physical filter cartridge, not on the indicator light.

Can I reset the water filter light from the refrigerator's touchscreen display?

On newer LG models with touchscreen controls, yes. The reset function is usually in a menu labeled "Settings," "Maintenance," or "Filter." Tap the option and follow the on-screen prompts. Your manual will show the exact menu path for your model.

How often should I replace my LG water filter?

LG recommends replacing the filter every six months under normal use. If you have hard water or use the dispenser frequently, you may need to replace it sooner. The indicator light will tell you when the filter is due, but you can also replace it on a schedule if you prefer.

What if the reset button does not respond when I press it?

Try pressing it more firmly and holding for the full duration listed in your manual. If it still does not work, the button may be stuck or the control panel may need power reset — unplug the refrigerator for five minutes, then plug it back in and try again. If the button still does not respond, contact LG support.