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Service bulletin ZLF_DEALER LETTE

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 id10106564
Published by NHTSA2017-06-15
Manufacturer's numberZLF_DEALER LETTE
Manufacturer's date2016-06-16
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE)

NHTSA's summary

"DEALER LETTER: IN THESE VEHICLES, LEXUS HAS RECEIVED SOME REPORTS OF A ROUGH IDLE AND/OR RATTLE NOISE FROM THE TRANSAXLE AT COLD START DUE TO A STICKING EXHAUST GAS RECIRCULATION (EGR) VALVE. IF THIS OCCURS, THE VEHICLE MAY ILLUMINATE THE CHECK ENGINE LIGHT AND SET DIAGNOSTIC TROUBLE CODE (DTC) P0401."

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine, Exhaust and emissions, EGR valve

Trouble codes named

P0401

Vehicles listed
LEXUS CT HYBRID2011 to 2012

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