2020-2021 Toyota Corolla Models Sloshing or Splashing Noise Caused by Water Inside Doors T-SB-0121-20


Please see TSB T-SB-0121-20

2019 - 2021 Corolla Hatchback
2020 - 2021 Corolla, Corolla Hybrid

Some 2020 – 2021 model year Corolla and Corolla Hybrid vehicles, and some 2019 – 2021 model year Corolla Hatchback vehicles may exhibit a sloshing or splashing noise when turning at low speeds or when opening and closing doors. This can be caused by water inside one or more of the vehicle doors. Follow the Repair Procedure in this bulletin to address this condition.

Warranty Information:
Remove and Partially Replace the Door Dust Seals

This repair is covered under the Toyota Basic Warranty. This warranty is in effect for 36 months or 36,000 miles, whichever occurs first, from the vehicle’s in-service date.
Warranty application is limited to occurrence of the specified condition described in this bulletin.

Repair Procedure:
1. Confirm the condition exists. Does the vehicle exhibit a sloshing or splashing noise when turning at low speeds or when opening and closing doors?
YES — Continue to step 2.
NO — This bulletin does NOT apply. Continue diagnosis using the applicable Repair Manual.
2. Remove the dust seals from the bottom of each door and allow the water to completely drain.

3. Prepare eight of the removed dust seals for reinstallation. Clean ANY dust, dirt, or debris from eight of the twelve removed dust seals

4. Clean the doors and reinstall the eight dust seals.
A. Once the water has completely drained from each door, wipe the bottom surface of the doors at each dust seal location to ensure no obstructions are present for installation.
B. Reinstall two dust seals per door at the locations indicated.

5. Discard the four dust seals that are no longer required and confirm the condition no longer exists.

Denise Breit

What are you doing about taking the door panels off, checking for rust, cleaning, and/or replacing said doors if structural integrity is impacted?


Staff member


The car is defective, now I have to remove the seals every time it rains. If the water gets stuck in there is going to cause rust issues. You should replace or seal the doors properly.


What a joke, I’ve never heard of this problem before in my life. And now what I have to remove the tabs on my own? This is a god damn defect, shouldn’t be threads in this BS topic. Take your car in to Toyota and show them what the fuck is up, completely and utterly ridiculous.