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Service bulletin L-TT-0285-20

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 id10174892
Published by NHTSA2020-05-11
Manufacturer's numberL-TT-0285-20
Manufacturer's date2020-04-07
NHTSA componentPOWER TRAIN

NHTSA's summary

TT: Some 2019-2020 model year UX250h vehicle may experience a whine/humming noise at 70-80 mph from the rear of the vehicle. This condition can occur on vehicles with less than 10,000 miles.

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

Transmission and driveline

Vehicles listed
LEXUS UX HYBRID2019 to 2020

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