WenmarOpen by Wenmar Pro

Service bulletin L-TT-0263-19

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 id10162759
Published by NHTSA2019-07-15
Manufacturer's numberL-TT-0263-19
Manufacturer's date2019-06-25
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

TT: The new 12V Battery Warranty Testers (DSS-5000 & DCA-8000) require certain information to generate a test result and warranty code. Below is an explanation of what information is required when testing a 12V battery on the new Warranty Battery Testers.

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 HYBRID2017 to 2018
LEXUS ES HYBRID2017 to 2020
LEXUS GS 200T2017
LEXUS GS 3502017 to 2020
LEXUS GS F2017 to 2020
LEXUS GS HYBRID2017 to 2019
LEXUS GX4602017 to 2020
LEXUS IS 2502017
LEXUS IS 3502017 to 2020
LEXUS IS200T2017
LEXUS LC HYBRID2018 to 2020
LEXUS LC5002018 to 2020
LEXUS LS2018
LEXUS LS HYBRID2018 to 2020
LEXUS LS4602017
LEXUS LS5002018 to 2020
LEXUS LX5702017 to 2020
LEXUS NX HYBRID2017 to 2020
LEXUS NX200T2017
LEXUS NX3002018 to 2020
LEXUS RC 200T2017
LEXUS RC 3002017 to 2020
LEXUS RC 3502017 to 2020
LEXUS RC F2017 to 2020
LEXUS RX HYBRID2017 to 2020
LEXUS UX HYBRID2019 to 2020
LEXUS UX2002019 to 2020

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-0057-22 Rev22026-03-07. Service bulletin. OBSOLETE NOTICE February 2, 2026: This bulletin is now obsolete. Please see L-SB-0004-26.
L-SB-0004-262026-02-11. Service bulletin. Some 2018 – 2025 model year Lexus vehicles equipped with the Enform™ 2.0 Navigation System, require a Special Service Tool (SST) USB flash drive to update the map, points of interest, and system software.
L-TT-0326-23 Rev22025-09-09. Service bulletin. Some customers may experience operational difficulties with some telematics features which they cannot resolve on their own. These resources, in conjunction with the Repair Manual, are for dealership personnel to assist those customers with user issues, user errors, and compatibility issues with other vehicle systems and external applications encountered while operating telematics features.
L-SB-0043-23 Rev12025-07-10. Service bulletin. The air conditioning dye injection tool kit has been developed to aid in identifying the location of air conditioning refrigerant leaks. The procedures outlined in this Service Bulletin aid in locating, inspecting, and repairing refrigerant leaks.
L-TT-0341-252025-06-06. Service bulletin. To assist with the early detection and early resolution of audio related concerns you may be asked to recover MMR data from the head unit. The following steps are instructions on how to retrieve the data from the system and are only to be used when requested by FTS and/or FPE.
L-TT-0341-252025-05-15. Service bulletin. To assist with the early detection and early resolution of audio related concerns you may be asked to recover MMR data from the head unit. The following steps are instructions on how to retrieve the data from the system and are only to be used when requested by FTS and/or FPE.
L-SB-0013-24 Rev12025-04-08. Service bulletin. The Immobilizer and Smart Key Reset is a feature that allows the registration of new keys when all master keys are lost. Once the system is reset, all previously registered keys will be erased and can never be reused. Another feature, Add/Remove Key, is also available. Once a key is removed, it can never be reused.
L-SB-0013-24 Rev12025-03-11. Service bulletin. The Immobilizer and Smart Key Reset is a feature that allows the registration of new keys when all master keys are lost. Once the system is reset, all previously registered keys will be erased and can never be reused. Another feature, Add/Remove Key, is also available. Once a key is removed, it can never be reused.
L-SB-0057-22 Rev22025-02-12. Service bulletin. Some 2018 – 2025 model year Lexus vehicles equipped with the Enform™ 2.0 Navigation System, require a Special Service Tool (SST) USB flash drive to update the map, points of interest, and system software. The SST is used with applicable vehicles to deliver the update, however, the process for generating license keys differs from previous generations.
LSB0055232023-12-26. Service bulletin. TSB: Some 2018 ? 2024 model year Lexus vehicles may exhibit a hybrid system warning lamp occurring in below-freezing temperatures (below 32°F or 0°C). After performing a Health Check, one or both of the following Diagnostic Trouble Codes (DTCs) may be present: ?P1C8449 ? (High Voltage Power Resource Circuit Short during Ready ON) ?P300449 ? (High Voltage Power Resource Circuit Short during Pre-Charge) Follow the Repair Procedure in this bulletin to address this condition.