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Service bulletin L-TT-0251-18

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 id10152631
Published by NHTSA2019-01-07
Manufacturer's numberL-TT-0251-18
Manufacturer's date2018-11-30
NHTSA componentVEHICLE SPEED CONTROL

NHTSA's summary

TT: Intermittent high-pitched whine noise is heard when driving 45-70MPH.

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

Throttle and cruise control

Vehicles listed
LEXUS GX4602015 to 2019

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