# Service bulletin T\-TT\-0642\-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: 10188923
- Published by NHTSA: 2021\-03\-15
- Manufacturer's number: T\-TT\-0642\-21
- Manufacturer's date: 2021\-02\-15
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

TT: Customers may state the vehicle has oil consumption or certain warnings have illuminated stating low oil, ?Oil level at minimum, add one quart? as stated on MID.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10188923-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10188923-9999.pdf)

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

## Components

Engine

## Vehicles listed

- 2021 TOYOTA SUPRA

## Recalls for the same vehicles and component

- [21V598000](/recalls/nhtsa/21V598000.md), 2021-08-02: ENGINE

## Other bulletins for the same vehicles and component

- [T\-PANT\-2024\-004\-](/bulletins/10253223.md), 2024-04-15, Service bulletin: ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION. 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.
- [21TC02\_Dealer\_Le](/bulletins/10203543.md), 2021-11-15, Service bulletin: ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. DL: Due to a software error in the battery management system of the 12V battery located under the vehicle?s hood, the engine auto Stop/Start functionality could become deactivated.
- [21TC02\_Region\_Le](/bulletins/10203541.md), 2021-11-15, Service bulletin: ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. RL: Due to a software error in the battery management system of the 12V battery located under the vehicle?s hood, the engine auto Stop/Start functionality could become deactivated.
- [T\-TT\-0642\-21 Rev](/bulletins/10190464.md), 2021-04-19, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION. TT: Customers may state the vehicle has oil consumption or certain warnings have illuminated stating low oil, ?Oil level at minimum, add one quart? as stated on MID.
- [T\-TT\-0628\-20](/bulletins/10183281.md), 2020-11-30, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS. TT: HVAC drain tube is found to be blocked/clogged.
- [T\-TT\-0468\-17 Rev](/bulletins/10178524.md), 2020-08-17, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM. TT: HVAC drain tube is found to be blocked/clogged.

JSON: [/v1/bulletins/10188923](/v1/bulletins/10188923)

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