# Service bulletin T\-SB\-0103\-21

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10206517
- Published by NHTSA: 2022\-01\-18
- Manufacturer's number: T\-SB\-0103\-21
- Manufacturer's date: 2021\-12\-15
- NHTSA component: ENGINE

## NHTSA's summary

TSB: Some 2020 ? 2022 model year Highlander Hybrid vehicle customers may express a concern of engine noise on acceleration from 0 ? 45 mph. Follow the Repair Procedure in this bulletin to address this condition.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10206517-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10206517-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine

## Vehicles listed

- 2020 to 2022 TOYOTA HIGHLANDER HYBRID

## Recalls for the same vehicles and component

- [20V162000](/recalls/nhtsa/20V162000.md), 2020-03-19: ENGINE; FUEL SYSTEM, GASOLINE:DELIVERY

## Other bulletins for the same vehicles and component

- [T\-SB\-0110\-20 Rev2](/bulletins/11037202.md), 2026-09-09, Service bulletin: ENGINE. OBSOLETE NOTICE August 20, 2026: This bulletin is now obsolete. Please see T\-SB\-0051\-26.
- [24TE04](/bulletins/11037186.md), 2026-09-09, Warranty extension: ENGINE. Although the flow shut\-off valve is covered by Toyota’s New Vehicle Limited Warranty for 36 months or 36,000 miles \(whichever comes first\), we at Toyota care about the customers’ ownership experience. Toyota is providing coverage for repairs related to Flow Shut\-off Valve Coolant Leak.
- [T\-SB\-0104\-21 Rev2](/bulletins/11029896.md), 2026-03-07, Service bulletin: ENGINE. OBSOLETE NOTICE February 27, 2026: This bulletin is no longer applicable and is now obsolete.
- [24TE04](/bulletins/11022949.md), 2025-09-09, Service campaign: ENGINE. The specific condition covered by this program is for a small engine coolant leak that can occur from the flow shut\-off valve that can allow coolant to drip on other parts of the vehicle. This can cause "Engine Maintenance Required" to be displayed on the instrument cluster or cause the A/C not to function normally. Although the flow shut\-off valve is covered by Toyota’s New Vehicle Limited Warranty for 36 months or 36,000 miles \(whichever comes first\), we at Toyota care about the customers’ ownership experience. Toyota is providing coverage for repairs related to Flow Shut\-off Valve Coolant Leak.
- [T\-SB\-0112\-24 Rev2](/bulletins/11020668.md), 2025-07-10, Service bulletin: ENGINE. Some 2018 – 2021 model year Toyota vehicles equipped with an A25A\-FKS, A25A\-FXS, or M20A\-FKS engine may exhibit a condition in which an “Engine Maintenance Required” message is displayed in the Multi\-Information Display \(MID\). Additionally, the vehicle will exhibit DTC\(s\) P268111 \(Engine Coolant Bypass Valve Circuit Short to Ground\) and/or P268115 \(Engine Coolant Bypass Valve Circuit Short to Battery or Open\).
- [24TE04](/bulletins/11016794.md), 2025-04-08, Warranty extension: ENGINE. Although the flow shut\-off valve is covered by Toyota’s New Vehicle Limited Warranty for 36 months or 36,000 miles \(whichever comes first\), we at Toyota care about the customers’ ownership experience. Toyota is providing coverage for repairs related to Flow Shut\-off Valve Coolant Leak.
- [24TE04](/bulletins/11015508.md), 2025-03-11, Warranty extension: ENGINE. Although the flow shut\-off valve is covered by Toyota’s New Vehicle Limited Warranty for 36 months or 36,000 miles \(whichever comes first\), we at Toyota care about the customers’ ownership experience. Toyota is providing coverage for repairs related to Flow Shut\-off Valve Coolant Leak.
- [T\-TT\-0771\-25](/bulletins/11014205.md), 2025-02-12, Service bulletin: ENGINE. Some 2021\-2025 MY Highlander HV, Sienna HV, RAV4, and RAV4 HV, may exhibit an oil leak from the area where the camshaft cover, camshaft housing, and the timing chain covers meet. This is typically seen on the exhaust side of the engine.
- [T\-SB\-0112\-24 Rev1](/bulletins/11014174.md), 2025-02-12, Service bulletin: ENGINE. Some 2018 – 2021 model year Toyota vehicles equipped with an A25A\-FKS, A25A\-FXS, or M20A\-FKS engine may exhibit a condition in which an “Engine Maintenance Required” message is displayed in the Multi\-Information Display \(MID\). Additionally, the vehicle will exhibit DTC\(s\) P268111 \(Engine Coolant Bypass Valve Circuit Short to Ground\) and/or P268115 \(Engine Coolant Bypass Valve Circuit Short to Battery or Open\).
- [T\-SB\-0110\-20 Rev2](/bulletins/11012753.md), 2025-01-09, Service bulletin: ENGINE. This bulletin includes basic procedures for performing a rescue charge at battery on high voltage \(HV\) Ni\-MH and Li\-ion batteries. This bulletin should be used in conjunction with the applicable model and model year Repair Manual while performing the battery rescue charge. The GRX\-5100 should be used wherever the Repair Manual references the Toyota Hybrid System \(THS\) charger.

JSON: [/v1/bulletins/10206517](/v1/bulletins/10206517)

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