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Service bulletin T-TT-0552-19

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 id10162761
Published by NHTSA2019-07-15
Manufacturer's numberT-TT-0552-19
Manufacturer's date2019-06-27
NHTSA componentEQUIPMENT; ENGINE

NHTSA's summary

TT: When repairing a 1234YF HVAC system on a gas powered (Non-Hybrid) Toyota and the addition of compressor oil is required to complete the repairs, the various 1234YF compressor oils (ND-12, PS-D1, or VC100YF) are available through the Toyota Approved Dealer Equipment website.

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, Equipment and accessories

Vehicles listed
TOYOTA AVALON2019, 2020
TOYOTA C-HR2017
TOYOTA C-HR2018, 2019, 2020
TOYOTA CAMRY2018, 2019, 2020
TOYOTA COROLLA2019
TOYOTA COROLLA HATCHBACK2020 (the catalog's model; the bulletin names a series or trim of it)
TOYOTA RAV42019, 2020
TOYOTA TACOMA2016, 2017, 2018, 2019, 2020
TOYOTA TUNDRA2018, 2019, 2020

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

Recalls for the same vehicles and component
20200392020-02-06. Engine
20V0640002020-02-06. ENGINE AND ENGINE COOLING
20194282019-08-23. Accessories
19V5030002019-06-28. EQUIPMENT:OTHER:LABELS
19V2440002019-03-27. EQUIPMENT:OTHER:LABELS
18V9000002018-12-19. EQUIPMENT:OTHER:LABELS
18V7110002018-10-11. EQUIPMENT:OTHER:LABELS
20181482018-03-28. Engine
18V2000002018-03-28. ENGINE AND ENGINE COOLING:ENGINE
17V8310002017-12-20. EQUIPMENT:OTHER:LABELS

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.
26TE062026-08-12. Service campaign. Although the Continuously Variable Transmissions (CVT) is covered by Toyota’s New Vehicle Limited Warranty for 5 years or 60,000 miles (whichever comes first), we at Toyota care about the customers’ ownership experience. Toyota is providing coverage for repairs related to an abnormal whine noise in the CVT.
T-SB-0104-21 Rev22026-03-07. Service bulletin. OBSOLETE NOTICE February 27, 2026: This bulletin is no longer applicable and is now obsolete.
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.
T-SB-0088-23 Rev22025-09-09. Service bulletin. OBSOLETE NOTICE August 19, 2025: This bulletin is now obsolete. Please see T-SB-0059-25.
T-SB-0059-252025-09-09. Service bulletin. Some 2020 – 2025 model year Corolla vehicles may exhibit a vibration or rattle noise from the right-hand engine mounting insulator sub-assembly. This condition will usually go away when the engine’s Revolutions Per Minute (RPM) are above idle. This condition is typically found on vehicles in warm climates/weather. No Diagnostic Trouble Codes (DTCs) are associated with this condition. This condition does not affect the operation of the vehicle.
24TE042025-09-09. Service campaign. 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.