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Service bulletin L-TT-0144-13

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 id10133744
Published by NHTSA2018-04-23
Manufacturer's numberL-TT-0144-13
Manufacturer's date2014-03-06
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

Customers complain of Bluetooth connectivity concerns such as: difficulty to pair the phone. Intermittent Bluetooth failure to connect to the vehicle when first turning on the vehicle. These concerns can be caused by changes made on the customer's phone. Make sure to inquire with the customer if the connectivity concerns occurred after receiving an operating system update on their phone or they have restore their phone data/settings recently.

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

Electrical system

Vehicles listed
LEXUS CT HYBRID2011 to 2014
LEXUS ES3502007 to 2014
LEXUS GS 3502007 to 2011
LEXUS GS 3502013 to 2014
LEXUS GS4602008 to 2011
LEXUS GX4602010 to 2014
LEXUS GX4702005 to 2009
LEXUS HS 250 HYBRID2010 to 2012
LEXUS IS 2502006 to 2014
LEXUS IS 250C2010 to 2014
LEXUS IS 3502006 to 2014
LEXUS IS 350C2010 to 2014
LEXUS IS F2008 to 2014
LEXUS LFA2012
LEXUS LS4302004 to 2006
LEXUS LS4602007 to 2014
LEXUS LS600H2008 to 2014
LEXUS LX4702004 to 2007
LEXUS LX5702008 to 2011
LEXUS LX5702013 to 2014
LEXUS RX HYBRID2006 to 2008
LEXUS RX HYBRID2011 to 2014
LEXUS RX3502007 to 2014
LEXUS RX450H2010
LEXUS SC4302005 to 2010

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

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L-TT-0281-202020-04-13. Service bulletin. TT: Some customers may encounter Bluetooth® connectivity concerns such as: ?Difficulty to pair the phone. ?Intermittent Bluetooth® failure to connect to the vehicle when first turning on the vehicle. ?Various Bluetooth® Audio functions are no longer functioning with customer?s phone such as ability to change the track using the steering wheel controls. These concerns can be caused by changes made on the customer?s phone. Make sure to inquire with the customer if the connectivity concerns occurred after receiving an operating system update on their phone or if they have restored their phone data/settings recently.
L-SB-0001-18-Rev2019-09-03. Service bulletin. TSB: REVISION NOTICE July 01, 2019 Rev1: G1668 Applicability has been updated to include 2019 ? 2020 model year Lexus vehicles. G2158 The Techstream Preparation and Process Overview sections have been updated. Any previous printed versions of this bulletin should be discarded. SUPERSESSION NOTICE The information contained in this bulletin supersedes Service Bulletin No. L-SB-0021-14. G1765 Applicability has been updated to include applicable 2018 models and 2016 ? 2018 model year RC 300 and 2015 ? 2018 model year RC 350 vehicles. ? Applicability has been updated to exclude 2001 ? 2003 model year ES 300 vehicles. Service Bulletin No. L-SB-0021-14 is obsolete and any printed versions should be discarded. Be sure to review the entire content of this bulletin before proceeding. Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated without replacing the ECU. Flash calibration updates for specific vehicle models/ECUs are released as field-fix procedures described in individual Service Bulletins. This bulletin details the Techstream ECU flash reprogramming process and outlines the use of the Technical Information System (TIS) and the Calibration Update Wizard (CUW). Flash calibration updates can only be applied to the vehicle/ECU combination for which they are intended. ECUs have internal security that will not allow them to be programmed with another ECU?s information. NOTE ECU is a Lexus term used to describe integrated computerized devices responsible for managing the operation of a system or subsystem. For the purposes of this bulletin, the term ECU is used as a generic label for the following SAE J1930 standard references: ? Powertrain Control Module (PCM) ? Engine Control Module (ECM) ? Transmission Control Module (TCM) ? Any other Lexus-specific control unit
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L-TT-0172-152018-04-23. Service bulletin. TT: Techstream Health Check Results screen shows "Yes" for a Telematics ECU (DCM) Calibration update regardless of whether a calibration update is available or not. The issue is related to the Techstream software and will be corrected in a future Techstream software release.