NHTSA service bulletin

NHTSA Service Bulletin 10206528: 2018-2022 Toyota Avalon

Official manufacturer communication context for 2018-2022 Toyota Avalon, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 10206528 summary graphic for 2018-2022 Toyota Avalon
10206528NHTSA document ID
Over-the-air software updatecommunication type
15affected product rows
100/100quality score

Reviewed June 2026 from NHTSA manufacturer communication and service bulletin records. Carchieve is independent and not affiliated with any vehicle manufacturer or government agency.

Quick answer

TSB: Some 2018 ? 2022 model year Toyota vehicles equipped with an A25A-FKS, A25A-FXS, or M20A-FKS engine may exhibit one or more of the following conditions: ?Milky/Discolored engine oil. ?An ?Oil Pressure Low? warning message on the Multi-information Display (MID). ?A MIL ON condition with Diagnostic Trouble Codes (DTCs) P05202A (Engine Oil Pressure Sensor/Switch "A" Signal Stuck in Range) and/or P052477 (Engine Oil Pressure too low [Severe]). Moisture from blow-by gases condenses and accumulates in the engine oil during short trips in extreme cold weather. When the moisture in the oil freezes, the oil pressure may drop, and the aforementioned warning indicators may display. Follow the procedures in this bulletin to address these conditions.

What this bulletin may mean before buying

Treat this as service research, not a verdict on one car. Before you buy, compare this communication with official recall campaigns, model-level owner complaint patterns, and the exact vehicle’s VIN-decoded specifications. A bulletin can help you ask a seller or dealer sharper questions about software updates, known repairs, warranty extensions and service history.

Affected products listed in this communication

MakeModelModel yearsBuyer note
ToyotaAvalon Hybrid2019-2022Ask for service records and run the exact VIN before purchase.
ToyotaCamry Hybrid2018-2022Ask for service records and run the exact VIN before purchase.
ToyotaCorolla Hatchback2019-2021Ask for service records and run the exact VIN before purchase.
ToyotaHighlander Hybrid2020-2022Ask for service records and run the exact VIN before purchase.
ToyotaRav4 Hybrid2019-2022Ask for service records and run the exact VIN before purchase.
ToyotaRav4 Prime2021Ask for service records and run the exact VIN before purchase.
ToyotaRedundant Sienna2021, 2022Ask for service records and run the exact VIN before purchase.
ToyotaSienna Hybrid2021, 2022Ask for service records and run the exact VIN before purchase.
ToyotaVenza2021Ask for service records and run the exact VIN before purchase.
ToyotaVenza Hybrid2021, 2022Ask for service records and run the exact VIN before purchase.

Buyer checklist

  1. Run the 17-character VIN and confirm the year, make, model, engine and equipment match the listing.
  2. Check recall campaign pages for safety actions that may require dealer repair.
  3. Compare this bulletin with common problem pages for the same model and component area.
  4. Ask the seller or dealer whether the bulletin procedure, update or inspection has already been completed.
  5. Use the used-car buying checklist and get an independent inspection.

Frequently asked questions

What is NHTSA service bulletin 10206528?

TSB: Some 2018 ? 2022 model year Toyota vehicles equipped with an A25A-FKS, A25A-FXS, or M20A-FKS engine may exhibit one or more of the following conditions: ?Milky/Discolored engine oil. ?An ?Oil Pressure Low? warning message on the Multi-information Display (MID). ?A MIL ON condition with Diagnostic Trouble Codes (DTCs) P05202A (Engine Oil Pressure Sensor/Switch "A" Signal Stuck in Range) and/or P052477 (Engine.

Is a service bulletin the same as a recall?

No. A recall is a safety campaign with a required remedy for affected VINs. A service bulletin or manufacturer communication usually describes diagnostic, repair, software, warranty or service information.

How should a used-car buyer use this bulletin?

Use it as a research signal. Compare it with recalls, owner complaints, service records, a VIN report and an independent inspection before buying.

Check the exact VIN before you buy

Model-level pages show public safety patterns. A full VIN report helps confirm the exact vehicle, decoded specs, recall applicability and buyer checks.

Get Full Report