NHTSA service bulletin

NHTSA Service Bulletin 10177775: 2016-2020 Toyota Yaris

Official manufacturer communication context for 2016-2020 Toyota Yaris, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 10177775 summary graphic for 2016-2020 Toyota Yaris
10177775NHTSA document ID
Manufacturer communicationcommunication type
2affected product rows
90/100quality 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: This bulletin details the procedure for loading configuration data (also known as As-built data) in the ECUs of 2016 ? 2020 model year Yaris Sedan Mexico-produced and 2017 ? 2018 model year iA vehicles. It is not recommended to swap ECUs between vehicles. The configuration data must be loaded into the ECU when replacing one of the ECUs listed below: ?PCM (Engine ECU). ?TCM (Transmission ECU). ?IC (Instrument Cluster or Combination Meter ECU). ?SSU (Smart Key ECU). ?RCM (Restraint Control Module/Airbag ECU).

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
ToyotaYaris2016-2020Ask for service records and run the exact VIN before purchase.
ToyotaYaris Ia2017, 2018Ask 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 10177775?

TSB: This bulletin details the procedure for loading configuration data (also known as As-built data) in the ECUs of 2016 ? 2020 model year Yaris Sedan Mexico-produced and 2017 ? 2018 model year iA vehicles. It is not recommended to swap ECUs between vehicles. The configuration data must be loaded into the ECU when replacing one of the ECUs listed below: ?PCM (Engine ECU). ?TCM (Transmission ECU). ?IC (Instrument.

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.

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