TSB: The air conditioning dye injection tool kit has been developed to aid in identifying the location of air conditioning refrigerant leaks. Follow the procedures outlined in this service bulletin to aid in locating, inspecting, and repairing refrigerant leaks
full bulletin at NHTSA ↗2021 Toyota Corolla visibility problems
moderate Owners of the 2021 Toyota Corolla have filed 10 NHTSA complaints about the visibility at roughly $350 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See visibility across all vehicles →
| Model year | visibility complaints |
|---|---|
| 2017 Corolla | 7 |
| 2020 Corolla | 14 |
| 2021 Corolla (this page) | 10 |
| 2022 Corolla | 7 |
No new NHTSA visibility complaint has been filed on this vehicle in over 3 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering visibility on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
TSB: Some 2018 model year Camry and Camry Hybrid, 2019 model year Avalon and Avalon Hybrid, 2020 ? 2021 model year Highlander, Highlander Hybrid, and Corolla, and 2021 model year Sienna Hybrid vehicles may exhibit decreased front windshield defroster performance at extremely low ambient temperatures. This condition may be the result of the fresh/recirculation servo actuator separating from the servo. This condition does not affect the airflow of the defroster. Follow the Repair Procedure in this bulletin to address this condition.
full bulletin at NHTSA ↗TT: When used in conjunction with the Repair Manual, these Blind Spot Monitor, Forward Recognition Camera, and Front Millimeter Wave Radar tips leverage SSTs and readily available tools to support target placement in varying shop environments.
full bulletin at NHTSA ↗TT: The blind spot monitor (BSM) sensor angle inspection is used to confirm that the BSM sensor is within the specified angle before performing axis beam adjustment. When used in conjunction with the repair manual, these BSM tips leverage SSTs and readily available tools to support sensor angle confirmation in varying shop environments.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
What owners are reporting 2 most recent
came out and windshield was cracked. Toyota makes defective cheap windshields
At around 0750 AM on 20Nov2023, the sun roof exploded while turning roughly 15 MPH onto an onramp of a highway. Nothing hit the car from the outside. The sun roof glass shattered and fell onto the sun roof cover. Glass could have fallen inside as well as onto me and could have obstructed my vision, causing a crash. No pot holes or noticeable bumps were struck prior to or after the malfunction.…
Common questions
How serious is the visibility problem on the 2021 Toyota Corolla?
It's a documented issue but not catastrophic. 10 complaints have been filed. Repairs average $350 and most owners catch it before it causes a breakdown.
At what mileage does the visibility typically fail?
Mileage data is limited for this issue. Owners report failures across a wide range, suggesting cause is more about driving conditions and maintenance than mileage alone.
What does it cost to fix?
Independent shops typically charge around $350 for visibility repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to visibility?
No active recalls currently cover visibility issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.