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Service bulletin T-TT-0615-20 Rev

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 id10179702
Published by NHTSA2020-09-14
Manufacturer's numberT-TT-0615-20 Rev
Manufacturer's date2020-08-07
NHTSA componentENGINE

NHTSA's summary

TT: The Toyota Quality group is looking to better understand our customers expectation regarding vehicle drivability. Specifically, we are looking at vehicle surge/hesitation condition (inconsistent acceleration) and would like to recover detailed customer voice and vehicle data.

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

Engine

Vehicles listed
TOYOTA 4RUNNER2018, 2019, 2020, 2021
TOYOTA AVALON2018, 2019, 2020, 2021
TOYOTA CAMRY2018, 2019, 2020, 2021
TOYOTA COROLLA2018, 2019, 2020, 2021
TOYOTA HIGHLANDER2018, 2019, 2020, 2021
TOYOTA RAV42018, 2019, 2020, 2021
TOYOTA SEQUOIA2018, 2019, 2020, 2021
TOYOTA SIENNA2018, 2019, 2020
TOYOTA TACOMA2018, 2019, 2020, 2021
TOYOTA TUNDRA2018, 2019, 2020, 2021

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

Recalls for the same vehicles and component
20V1620002020-03-19. ENGINE; FUEL SYSTEM, GASOLINE:DELIVERY
20200392020-02-06. Engine
20V0640002020-02-06. ENGINE AND ENGINE COOLING
20181482018-03-28. Engine
18V2000002018-03-28. ENGINE AND ENGINE COOLING:ENGINE

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-0110-20 Rev22026-09-09. Service bulletin. OBSOLETE NOTICE August 20, 2026: This bulletin is now obsolete. Please see T-SB-0051-26.
T-SB-0051-262026-09-09. Service bulletin. This bulletin includes basic procedures for performing a rescue charge at battery on high voltage (HV) Ni-MH and Li-ion batteries.
24TE042026-09-09. Warranty extension. 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-0023-262026-05-08. Service bulletin. Some customers may experience a rough running engine with a MIL ON P140018 DTC. Upon further inspection, a loose C90/C27 connector pin at the EGR valve may be found. To correct this concern, please reference the repair section of this TSB.
T-SB-0104-21 Rev22026-03-07. Service bulletin. OBSOLETE NOTICE February 27, 2026: This bulletin is no longer applicable and is now obsolete.
T-SB-0009-262026-03-07. Service bulletin. This bulletin includes basic procedures for performing a rescue charge on Ni-MH high voltage (HV) batteries. This bulletin should be used in conjunction with the applicable model and model year Repair Manual while performing a rescue charge. The GRX-5100 should be used wherever the Repair Manual references the Toyota Hybrid System (THS) charger.
T-SB-0119-15 Rev22026-03-07. Service bulletin. OBSOLETE NOTICE February 13, 2026: This bulletin is now obsolete. Please see T-SB-0009-26.
T-SB-0089-252026-01-09. Service bulletin. Some 2021 – 2025 model year RAV4 Plug-in Hybrid and RAV4 Prime vehicles may exhibit a MIL ON condition with Diagnostic Trouble Code (DTC) P019064 (Fuel Rail Pressure Sensor “A” Signal Plausibility Failure) present. The Engine Control Module (ECM) (SAE term: Powertrain Control Module/PCM) logic has been modified to address this condition.
22TC072025-12-05. Other. Owner Renotification Letter Due to certain programing in the engine ECU, under certain conditions, the vehicle may stall at low speeds when accelerating from a stop. If this low-speed vehicle stall occurs, steering and braking are not impacted, and the vehicle can be restarted immediately.
22TC072025-12-05. Other. Owner Renotification Letter Due to certain programing in the engine ECU, under certain conditions, the vehicle may stall at low speeds when accelerating from a stop. If this low-speed vehicle stall occurs, steering and braking are not impacted, and the vehicle can be restarted immediately.