WenmarOpen by Wenmar Pro

Service bulletin T-SB-0049-26

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id11037198
Published by NHTSA2026-09-09
Manufacturer's numberT-SB-0049-26
Manufacturer's date2026-08-19
Campaign id or software versionT-SB-0049-26
NHTSA componentPOWER TRAIN

NHTSA's summary

Some 2022 – 2025 model year Tundra Hybrid, 2023 – 2025 model year Sequoia Hybrid, 2024 –2025 Land Cruiser and Tacoma Hybrid, and 2025 4Runner Hybrid vehicles may exhibit a whine noise from the transmission when in Ready ON mode.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Transmission and driveline

Vehicles listed
TOYOTA 4RUNNER I-FORCE MAX HYBRID2025 (the catalog's model; the bulletin names a series or trim of it)
TOYOTA LAND CRUISER HYBRID2024, 2025 (the catalog's model; the bulletin names a series or trim of it)
TOYOTA SEQUOIA HYBRID2023, 2024, 2025 (the catalog's model; the bulletin names a series or trim of it)
TOYOTA TACOMA HYBRID2024, 2025 (the catalog's model; the bulletin names a series or trim of it)
TOYOTA TUNDRA HYBRID2022, 2023, 2024, 2025 (the catalog's model; the bulletin names a series or trim of it)

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20255212025-10-01. Powertrain
25V6560002025-10-01. POWER TRAIN:DRIVELINE:DRIVESHAFT
20241092024-02-21. Powertrain
24V1250002024-02-21. POWER TRAIN:AUTOMATIC TRANSMISSION
20223302022-06-23. Powertrain
22V4450002022-06-23. POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
T-SB-0111-222026-09-09. Service bulletin. OBSOLETE NOTICE August 24, 2026: This bulletin is now obsolete. Please see T-SB-0032-26
T-SB-0032-26 Rev12026-09-09. Service bulletin. Some customers of 2022 – 2026 model year Tundra vehicles equipped with specifically non-hybrid V35A-FTS engines may experience one or more of the following drivability related concerns: • Hesitation from a rolling stop. • Hesitation from a quick stop.
T-SB-0032-262026-06-04. Service bulletin. Some customers of 2022 – 2026 model year Tundra vehicles equipped with specifically non-hybridV35A-FTS engines may experience one or more of the following drivability related concerns: • Hesitation from a rolling stop. • Hesitation from a quick stop. The Transmission Control Module (TCM) logic has been modified to address these conditions.
T-SB-0094-242026-05-08. Service bulletin. OBSOLETE NOTICE April 15, 2026: This bulletin is no longer applicable and is now obsolete
T-SB-0094-24 Rev12026-03-07. Service bulletin. Some 2024 model year Tacoma and Tacoma Hybrid vehicles may exhibit a MIL ON condition with one or more of the following Diagnostic Trouble Codes (DTCs) present: •P07407F – Torque Converter Clutch Actuator Stuck Off •P074571 – Pressure Control Solenoid “A” Actuator Stuck •P079571 – Pressure Control Solenoid "C" Actuator Stuck •P08BA71 – Pressure Control Solenoid "L" Actuator Stuck •P271371 – Pressure Control Solenoid "D" Actuator Stuck •P280771 – Pressure Control Solenoid "G" Actuator Stuck •P281671 – Pressure Control Solenoid "H" Actuator Stuck The automatic transmission assembly and torque converter need to be replaced to address this condition for Tacoma vehicles. The automatic transmission assembly, torque converter, and hybrid module need to be replaced to address this condition for Tacoma Hybrid vehicles.
T-SB-0095-242024-11-08. Service bulletin. Some 2023 model year Sequoia Hybrid and 2022 – 2023 Tundra Hybrid vehicles may exhibit an oil leak between the automatic transmission and the hybrid module assembly, and the source of the oil leak is from the hybrid module output shaft seal. The hybrid module assembly has been updated to minimize this condition.
T-SB-0094-242024-11-08. Service bulletin. Some 2024 model year Tacoma and Tacoma Hybrid vehicles may exhibit a MIL ON condition with one or more of the following Diagnostic Trouble Codes (DTCs) present: •P07407F – Torque Converter Clutch Actuator Stuck Off •P074571 – Pressure Control Solenoid “A” Actuator Stuck •P079571 – Pressure Control Solenoid "C" Actuator Stuck •P08BA71 – Pressure Control Solenoid "L" Actuator Stuck •P271371 – Pressure Control Solenoid "D" Actuator Stuck •P280771 – Pressure Control Solenoid "G" Actuator Stuck •P281671 – Pressure Control Solenoid "H" Actuator Stuck The automatic transmission assembly and torque converter need to be replaced to address this condition for Tacoma vehicles. The automatic transmission assembly, torque converter, and hybrid module need to be replaced to address this condition for Tacoma Hybrid vehicles.
T-SB-0076-242024-11-08. Service bulletin. OBSOLETE NOTICE October 14, 2024: This bulletin is now obsolete. Please see T-SB-0094-24.
T-SB-0086-242024-11-08. Service bulletin. Some 2023 – 2024 model year Sequoia Hybrid and 2022 – 2024 model year Tundra Hybrid vehicles may exhibit a rattle sound from the hybrid module when the engine is at idle in drive or in reverse once fully warmed up. The Engine Control Module (ECM) (SAE term: Powertrain Control Module/PCM) logic has been modified to address this condition.
T-SB-0076-242024-11-06. Service bulletin. Some 2024 model year Tacoma vehicles may exhibit a MIL ON condition with one or more of the following Diagnostic Trouble Codes (DTCs) present: •P07407F – Torque Converter Clutch Actuator Stuck Off •P079571 – Pressure Control Solenoid "C" Actuator Stuck •P08BA71 – Pressure Control Solenoid "L" Actuator Stuck •P271371 – Pressure Control Solenoid "D" Actuator Stuck •P280771 – Pressure Control Solenoid "G" Actuator Stuck •P281671 – Pressure Control Solenoid "H" Actuator Stuck The automatic transmission assembly and torque converter need to be replaced to address this condition.