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Service bulletin T-TT-0500-18

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 id10142872
Published by NHTSA2018-07-16
Manufacturer's numberT-TT-0500-18
Manufacturer's date2018-06-06
NHTSA componentENGINE AND ENGINE COOLING; POWER TRAIN

NHTSA's summary

TT: Some 2014 ? 2018 model year Corollas may experience a dark red or black colored fluid leak between the engine and transmission bell housing.

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, Transmission and driveline

Vehicles listed
TOYOTA COROLLA2014, 2015, 2016, 2017, 2018

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

Other bulletins for the same vehicles and component
T-SB-0103-20 Rev12024-07-23. Service bulletin. This Service Bulletin provides updated non-electric water pump leak inspection and diagnostic tips for some 2008 – 2025 model year Toyota vehicles.
T-SB-0103-20 Rev12024-07-23. Service bulletin. This Service Bulletin provides updated non-electric water pump leak inspection and diagnostic tips for some 2008 – 2025 model year Toyota vehicles.
T-PANT-2024-004-2024-04-15. Service bulletin. This is to advise of various price adjustments that will affect Toyota Genuine Motor Oil and Long Life Coolant, effective March 1, 2024. These products are ordered through the Toyota Complete Maintenance Care (TCMC) website.
T-TT-0699-22 Rev2023-04-17. Service bulletin. TT: Some Model Year 2018-2023 vehicles equipped with A25A-FKS/FXS or M20A-FKS/FXS engines may display the following message ?Engine Maintenance Required Visit Your Dealer? on the combination meter
T-SB-0106-20 Rev2022-12-19. Service bulletin. TSB: Some 2015 ? 2021 model year Corolla vehicles may exhibit a clicking noise when making turns greater than 90 degrees and accelerating with the steering wheel on full lock, such as when performing a U-turn. Follow the Repair Procedure in this bulletin to address this condition.
T-TT-0699-22 Rev2022-10-17. Service bulletin. TT: Some Model Year 2018-2021 vehicles equipped with A25A-FKS/FXS or M20A-FKS/FXS engines may display the following message ?Engine Maintenance Required Visit Your Dealer? on the combination meter.
TTT0699222022-10-17. Service bulletin. TT: Some Model Year 2018-2021 vehicles equipped with A25A-FKS/FXS or M20A-FKS/FXS engines may display the following message ?Engine Maintenance Required Visit Your Dealer? on the combination meter.
JSD-0821182021-06-14. Service bulletin. An electric control unit has improper programming.
J0D-0328182021-06-14. Service bulletin. Transmission has improper programming.
T-TT-0628-202020-11-30. Service bulletin. TT: HVAC drain tube is found to be blocked/clogged.