An LG SideKick that does not seem to clean the clothes is almost always being asked to do more than its size allows. The SideKick is a 1.0 cubic foot pedestal mini-washer, model WD300CV, sold to sit under a compatible LG front-load washer and take a small second load, such as delicates, a few items or a quick wash of gym clothes. It is not a second full-size washer, and loading it like one is the main reason clothes come out dirty.
The checks in more detail
A drum packed with items cannot tumble, so soap and water do not reach the fabric, and heavy items stop the drum moving. Start by halving the load. Put in only a handful of items, leaving space for them to move, and wash again. Use a high-efficiency detergent in the small dose suited to a mini load; a full measure of detergent in a tiny drum produces suds that cushion the clothes and rinse poorly.
Choose a cycle that matches the load: a normal cycle for lightly soiled clothes, a stronger setting for greater soil, and warm water if the label allows. Pretreat stains, since a short, gentle machine does less mechanical work. Next, check the machine. Make sure the water taps that serve the SideKick are open; it has its own water connection, and a weak fill leaves too little water to wash.
Look at the detergent drawer for caked detergent that stops the dose reaching the drum, and clean the drain filter so the machine can drain and rinse. Because the SideKick shares routing with the main washer through the pedestal, a restricted hose can reduce water to it. If the washer fills, tumbles and drains normally with a small load, then it works; if it fails to fill or agitate, note any error code and contact LG with the model number WD300CV. For regular full-size laundry, use the main washer above.
Differential
Likely causes of “LG SideKick WD300CV pedestal washer does not clean clothes well”, and how to tell them apart
- 1
An overfull drum
What separates it Clothes cannot tumble and stay dirty
How to confirm Halve the load
- 2
Too much detergent
What separates it Suds and poor rinsing
How to confirm Use a small dose
- 3
A weak water fill
What separates it The drum has too little water
How to confirm Open the taps and check the hose
- 4
Caked detergent in the drawer
What separates it The dose does not reach the drum
How to confirm Clean the drawer
- 5
A mini washer used as a full-size one
What separates it Heavy items such as towels
How to confirm Wash large items in the main washer
Before you touch a setting
Record this first — changing settings destroys the evidence
- How many items were washed
- The detergent dose
- Whether the taps to the SideKick are open
- Whether the drawer is caked
Try in this order
0 of 6 completedHalve the load
ReversibleA handful of items.
Use a small dose
ReversibleOf HE detergent.
Choose a suitable cycle
ReversibleFor the soil.
Pretreat stains
ReversibleBefore washing.
Check the water
ReversibleTaps and hoses.
Clean the drawer and filter
ReversibleThen retest.
Model-specific
What is true of this model and not of its siblings
- What it is for
- A small second load such as delicates or a handful of gym clothes.
- Why loads fail
- Overfilling stops the tumble that cleans.
- Detergent
- A tiny drum needs a tiny dose; too much makes suds.
- Pretreating
- A short mini cycle does less mechanical work, so treat stains first.
- Shared connections
- Water and drain run through the pedestal with the main washer.
- LG help
- Quote WD300CV and the serial number.
- Parts for this problem on the WD300 (RepairClinic, 2026-09-20)
- add to cart water inlet valve genuine oem part #, part number AJU75052603, at $50.07; motor rotor bolt assembly, part number 4040FR4051C, at $15.96.
Stop boundary
When this stops being a self-service repair
- !Do not overfill the drum
- !Do not use full-size doses of detergent
- !Call LG if it will not fill or agitate
Evidence ledger
Sources behind this answer
Exact questions
Common questions
Why does my SideKick not clean?+
It is overfull or over-dosed.
What can it wash?+
Small loads and delicates.
How much detergent?+
A small dose of HE detergent.
Can it wash towels?+
Not a full load.
Is it broken?+
Usually not; check the load size.