LG ThinQ Washer Smells Bad (Troubleshooting Guide)

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Quick answer
Confirm the symptom
Tools and prep
Step-by-step troubleshooting
Common causes table
Parts matching
When to call a pro
FAQ
Related guides

Quick answer

To fix a smelly LG ThinQ washer, clean the detergent drawer, run a hot water cycle with vinegar or baking soda, and ensure proper ventilation. Regular maintenance prevents future odors.

Confirm the symptom

Notice a musty or moldy smell from the washer
Smell persists after a wash cycle
Odor is strongest in the detergent drawer or drum

Tools and prep

Rubber gloves
White vinegar or baking soda
Clean cloth or sponge
Microfiber towel
LG ThinQ user manual
Ensure the washer is unplugged for safety

Step-by-step troubleshooting

Clean the Detergent Drawer
Do: Remove the detergent drawer and soak it in a vinegar-water solution for 30 minutes.
Observe: Mold or mildew buildup on the drawer
Means: The drawer is a common source of odors due to trapped moisture and detergent residue.
Next: Wipe the drawer with a clean cloth and let it air dry before reinserting.
Run a Hot Water Cycle
Do: Add 2 cups of white vinegar or 1 cup of baking soda to the drum and run a hot water cycle without any laundry.
Observe: Odor reduction during or after the cycle
Means: Vinegar or baking soda neutralizes odors and removes buildup in the drum.
Next: Check if the smell is gone after the cycle completes.
Clean the Drum and Seals
Do: Wipe the interior drum and rubber seals with a damp cloth and mild detergent.
Observe: Visible dirt or mold on the drum or seals
Means: Moisture trapped in the seals can cause mold and odors.
Next: Dry the drum and seals thoroughly with a microfiber towel.
Check Ventilation
Do: Ensure the washer is in a well-ventilated area and the door is left slightly open after use.
Observe: Improved airflow around the washer
Means: Poor ventilation can trap moisture and lead to odors.
Next: Monitor the washer for any lingering smells over the next few days.
Inspect for Clogs
Do: Check the drain pump filter for debris or clogs and clean it if necessary.
Observe: Debris or standing water in the filter housing
Means: Clogs can prevent proper drainage and cause odors.
Next: Reassemble the filter and run a test cycle to ensure proper drainage.
Use the Right Detergent
Do: Switch to a high-efficiency (HE) detergent and avoid overusing it.
Observe: Residue buildup in the drum or drawer
Means: Using the wrong detergent can leave residue that causes odors.
Next: Continue using HE detergent for all future washes.

Common causes

Cause	Likelihood	Difficulty	Part often needed
Dirty Detergent Drawer Trapped moisture and detergent residue create a breeding ground for mold and mildew.	Common	Easy	Detergent drawer (if damaged)
Mold in Drum or Seals Moisture trapped in the drum or rubber seals leads to mold growth.	Common	Easy–Medium	None (cleaning usually suffices)
Clogged Drain Pump Filter Debris in the filter prevents proper drainage, causing water to stagnate and smell.	Sometimes	Medium	Drain pump filter (if damaged)
Poor Ventilation Lack of airflow allows moisture to linger, promoting mold and odors.	Sometimes	Easy	None
Incorrect Detergent Use Using non-HE detergent or overusing it leaves residue that smells.	Sometimes	Easy	High-efficiency detergent
Washer Not Level An unlevel washer can trap water in the drum, leading to odors.	Rare	Medium	Adjustment shims or feet
Internal Mold in Tub Mold can grow in hard-to-reach areas of the tub, causing persistent odors.	Rare	Hard	Professional cleaning or service

Parts matching

If cleaning doesn't resolve the odor, consider replacing these parts:

Detergent drawer (if damaged or warped)
Drain pump filter (if clogged or damaged)
High-efficiency detergent (to prevent future buildup)

Purchase genuine LG replacement parts for compatibility and performance.

When to call a professional

The odor persists after multiple cleaning attempts
You notice a foul smell from the drain pump or internal components
The washer makes unusual noises or leaks water during the cycle
You're unsure about disassembling internal parts like the drain pump

FAQ

Can I use bleach instead of vinegar to clean my LG ThinQ washer?

Avoid using bleach, as it can damage the washer's rubber components and interior. Stick to white vinegar or baking soda for safe cleaning.

How often should I clean my LG ThinQ washer to prevent odors?

Run a cleaning cycle with vinegar or baking soda once a month and wipe the drum and seals weekly to prevent mold and odors.

Why does my washer smell even after using the right detergent?

Residue buildup in the detergent drawer or drum can still cause odors. Regular cleaning is essential, even with HE detergent.

Is it normal for my washer to have a slight smell after a wash cycle?

A mild, damp smell is normal if the washer is still wet. A strong, musty odor indicates a cleaning or maintenance issue.