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Service bulletin 23LE04- Multiple

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 id10234307
Published by NHTSA2023-04-17
Manufacturer's number23LE04- Multiple
Manufacturer's date2023-03-02
NHTSA componentSERVICE BRAKES

NHTSA's summary

DP: Although the Brake Booster and Brake Booster Pump Assembly are covered by Lexus?s New Vehicle Limited Warranty for 4 years or 50,000 miles (whichever comes first), we at Lexus care about the customers? ownership experience. Lexus is providing coverage for repairs in the subject vehicles related to certain internal malfunctions of the Brake Booster Pump Assembly and/or Brake Booster, depending on the model.

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

Brakes

Vehicles listed
LEXUS GS 3502013
LEXUS GS HYBRID2014 to 2015
LEXUS HS 250 HYBRID2010 to 2012
LEXUS LS2008, 2009, 2010
LEXUS LS2012
LEXUS LS2016
LEXUS LS 4602011
LEXUS LS4602013 to 2017
LEXUS LS600H2008 to 2017
LEXUS RX2016, 2017, 2018, 2019
LEXUS RX HYBRID2013 to 2019

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
L-SB-0032-23 Rev2023-11-27. Service bulletin. TSB: Some 2016 ? 2022 model year RX 450h and 2018 ? 2022 model year RX 450hL vehicles may exhibit a squawk/knock noise from the engine compartment when depressing and/or releasing the brake pedal. Follow the Repair Procedure in this bulletin to address this condition.
L-SB-0047-192020-01-13. Service bulletin. TSB: Some 2007 ? 2017 model year LS460/LS460L and 2008 ? 2016 model year LS600h vehicles may exhibit a squawk/bark noise from the brake actuator when depressing and/or releasing the brake pedal. Follow the Repair Procedure in this bulletin to address this condition.
ZLG_Lexus POL16-2018-07-16. Service bulletin. Warranty Policy Bulletin: Lexus has received some reports where various brake system related warning lamps illuminate due to internal malfunctions of the Brake Actuator Assembly.