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Service bulletin L-TT-0144-13 Rev

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 id10111513
Published by NHTSA2017-08-14
Manufacturer's numberL-TT-0144-13 Rev
Manufacturer's date2015-11-12
NHTSA componentEQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM:SOFTWARE

NHTSA's summary

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 the 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 they have restored 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, Equipment and accessories, Software

Vehicles listed
LEXUS CT HYBRID2011 to 2016
LEXUS ES HYBRID2015 to 2016
LEXUS ES3502007 to 2016
LEXUS GS 200T2016
LEXUS GS 3502007 to 2011
LEXUS GS 3502013 to 2016
LEXUS GS F2016
LEXUS GS HYBRID2016
LEXUS GS450H2015
LEXUS GS4602008 to 2011
LEXUS GX4602010 to 2016
LEXUS GX4702005 to 2009
LEXUS HS 250 HYBRID2010 to 2012
LEXUS IS 2502006 to 2015
LEXUS IS 250C2010 to 2014
LEXUS IS 3002015
LEXUS IS 3502006 to 2016
LEXUS IS 350C2010 to 2015
LEXUS IS F2008 to 2014
LEXUS IS200T2016
LEXUS LFA2012
LEXUS LS4302004 to 2006
LEXUS LS4602007 to 2016
LEXUS LS600H2008 to 2016
LEXUS LX 5702008
LEXUS LX4702004 to 2007
LEXUS LX5702009 to 2011
LEXUS LX5702013 to 2016
LEXUS NX HYBRID2015 to 2016
LEXUS NX200T2015 to 2016
LEXUS RC 200T2016
LEXUS RC 3502015 to 2016
LEXUS RC F2016
LEXUS RX HYBRID2006 to 2008
LEXUS RX HYBRID2011 to 2016
LEXUS RX3502007 to 2016
LEXUS RX450H2010
LEXUS SC4302005 to 2010

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
LSB002514A2021-12-20. Service bulletin. Immobilizer and Smart Key Reset
LSB0025142021-12-20. Service bulletin. Immobilizer and Smart Key Reset.
KLG_19LE05-TI-Up2020-09-14. Service bulletin. TI: TECHNICAL INSTRUCTIONS FOR LIMITED SERVICE CAMPAIGN KLG CUSTOMER SUPPORT PROGRAM 19LE05 SAFETY CONNECT SYSTEM ? VEHICLE LOCATION INACCURATE
L-TT-0221-17_Rev2019-05-13. 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-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.
L-SB-0015-10 Rev2018-04-23. Service bulletin. Flash reprogramming allows the 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 reprograming process and outlines use of the TIS and the CUW.
L-SB-0083-13 Rev2018-04-02. Service bulletin. TSB: OBSOLETE NOTICE October 5, 2016: This bulletin is now obsolete. Please see L-SB-0086-16.
L-SB-0021-142018-04-02. Service bulletin. TSB: Flash reprogramming allows the 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 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.
L-TT-0172-152018-04-02. 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.
L-TT-0121-132018-04-02. Service bulletin. MY 2013 Gen 7 navigation systems use a USB SST to update the firmware and map. MY 2014 IS and GX models incorporate a Gen 8 navigation system that uses a USB stick to update the firmware ONLY. Refer to the chart below for a comprehensive list of all current and previously issued USB SSTs and their applicability.