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Service bulletins for the 2012 Lexus CT

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.

30 on file from NHTSA, as of 2026-10-19.

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Bulletins, newest first
L-SB-0024-242024-07-06. Service bulletin. STRUCTURE:BODY. The condition known as acid rain is caused by airborne chemicals or particles in the atmosphere, which mix with rainwater, nighttime dew, or high humidity to form acidic compounds. If these contaminants settle and remain on a painted vehicle surface, especially the horizonal areas of the hood, roof, and decklid, significant damage can occur. This damage is the result of actual etching of the paint and appears as pitting or water spots. As acid rain droplets on the vehicle surface evaporate, the concentration strength of the acid increases, causing deeper and more rapid damage. This evaporation and corrosive action also occur more rapidly on dark colored cars as direct sun heat increases. While Lexus paint quality, durability, and resistance to environmental factors is continuously being improved, it remains the responsibility of the dealer to protect and maintain the vehicle’s paint finish from the time of arrival at the dealership until retail delivery to the customer. In areas known for high frequency and/or concentration of acid rain, frequent vehicle washing during high heat or humidity periods will minimize the potential for paint damage caused by acid rain. It is further recommended that either reverse osmosis or deionized water be used to prevent water spotting. SUPERSESSION NOTICE The information contained in this bulletin supersedes Service Bulletin No. BO029-91. •The entire bulletin has been updated. Service Bulletin No. BO029-91 is obsolete
L-SB-0024-242024-07-06. Service bulletin. STRUCTURE:BODY. The condition known as acid rain is caused by airborne chemicals or particles in the atmosphere, which mix with rainwater, nighttime dew, or high humidity to form acidic compounds. If these contaminants settle and remain on a painted vehicle surface, especially the horizonal areas of the hood, roof, and decklid, significant damage can occur. This damage is the result of actual etching of the paint and appears as pitting or water spots. As acid rain droplets on the vehicle surface evaporate, the concentration strength of the acid increases, causing deeper and more rapid damage. This evaporation and corrosive action also occur more rapidly on dark colored cars as direct sun heat increases. While Lexus paint quality, durability, and resistance to environmental factors is continuously being improved, it remains the responsibility of the dealer to protect and maintain the vehicle’s paint finish from the time of arrival at the dealership until retail delivery to the customer. In areas known for high frequency and/or concentration of acid rain, frequent vehicle washing during high heat or humidity periods will minimize the potential for paint damage caused by acid rain. It is further recommended that either reverse osmosis or deionized water be used to prevent water spotting. SUPERSESSION NOTICE The information contained in this bulletin supersedes Service Bulletin No. BO029-91. •The entire bulletin has been updated. Service Bulletin No. BO029-91 is obsolete
Safety Recall 222022-06-21. Service bulletin. EQUIPMENT. Lexus Safety Recall and Service Campaign - Technician Certification Requirements 4.13.2022
Lexus PRO19-02 -2022-02-14. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; TIRES; WHEELS. POL: This consolidated Tire Warranty Guide contains the complete warranty terms for all brands of ground and spare tires currently in use by Lexus. This information must be kept near the point of vehicle sale and be available to any customer that requests it. Customers can find this information on the Owner?s section of Lexus.com. Dealers can locate a copy of this guide on the Claims Processing & Resource Center in Dealer Daily as well.
LTT0145132021-12-20. Service bulletin. VISIBILITY. Spots in Window Glass - vehicle exterior
LTT000110A2021-12-20. Service bulletin. ENGINE. Oil Viscosity Applicability and Cfhange Interval Guide
LTT0001102021-12-20. Service bulletin. ENGINE. Oil Viscosity Applicability and Cfhange Interval Guide
Lexus Safety Re2021-04-19. Service bulletin. AIR BAGS. Lexus Safety Recall and Service Campaign - Technician Certification Requirements
KLG_19LE05-TI-Up2020-09-14. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT ADAPTIVE/MOBILITY. TI: TECHNICAL INSTRUCTIONS FOR LIMITED SERVICE CAMPAIGN KLG CUSTOMER SUPPORT PROGRAM 19LE05 SAFETY CONNECT SYSTEM ? VEHICLE LOCATION INACCURATE
KLG_19LE05-TI-Up2020-09-14. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT ADAPTIVE/MOBILITY. TI: TECHNICAL INSTRUCTIONS FOR LIMITED SERVICE CAMPAIGN KLG CUSTOMER SUPPORT PROGRAM 19LE05 SAFETY CONNECT SYSTEM ? VEHICLE LOCATION INACCURATE
Lexus Safety Re2020-06-15. Service bulletin. EQUIPMENT. Safety Recall and Service Campaign - Technician Certification Requirements
19LE05-KLG - TI-2019-12-02. Service bulletin. EQUIPMENT. Technical Instructions: TECHNICAL INSTRUCTIONS FOR LIMITED SERVICE CAMPAIGN KLG CUSTOMER SUPPORT PROGRAM 19LE05 SAFETY CONNECT SYSTEM ? VEHICLE LOCATION INACCURATE CERTAIN 2011 ? 2017 MODEL YEAR LS, 2013 ? 2016 MODEL YEAR LS Hybrid, 2011 ? 2017 MODEL YEAR GS, 2016 ? 2017 MODEL YEAR GS-F, 2013 ? 2017 MODEL YEAR GS Hybrid, 2010 ? 2017 MODEL YEAR IS, 2011 ? 2015 MODEL YEAR IS-C, 2013 ? 2014 MODEL YEAR IS-F, 2015 ? 2017 MODEL YEAR RC, 2015 ? 2017 MODEL YEAR RC-F, 2011 ? 2017 MODEL YEAR CT, 2010 ? 2017 MODEL YEAR RX, 2010 ? 2017 MODEL YEAR RX Hybrid, 2015 ? 2017 MODEL YEAR NX, 2015 ? 2017 MODEL YEAR NX Hybrid, 2010 ? 2017 MODEL YEAR LX, 2010 ? 2018 MODEL YEAR GX, 2010 ? 2017 MODEL YEAR ES, 2013 ? 2017 MODEL YEAR ES Hybrid Updated 10/17/2019
KLG_TI_0913192019-10-15. Service bulletin. EQUIPMENT. Technical Instructions: TECHNICAL INSTRUCTIONS FOR LIMITED SERVICE CAMPAIGN SAFETY CONNECT SYSTEM ? VEHICLE LOCATION INACCURATE CERTAIN 2011 ? 2017 MODEL YEAR LS, 2013 ? 2016 MODEL YEAR LS Hybrid, 2011 ? 2017 MODEL YEAR GS, 2016 ? 2017 MODEL YEAR GS-F, 2013 ? 2017 MODEL YEAR GS Hybrid, 2010 ? 2017 MODEL YEAR IS, 2011 ? 2015 MODEL YEAR IS-C, 2013 ? 2014 MODEL YEAR IS-F, 2015 ? 2017 MODEL YEAR RC, 2015 ? 2017 MODEL YEAR RC-F, 2011 ? 2017 MODEL YEAR CT, 2010 ? 2017 MODEL YEAR RX, 2010 ? 2017 MODEL YEAR RX Hybrid, 2015 ? 2017 MODEL YEAR NX, 2015 ? 2017 MODEL YEAR NX Hybrid, 2013 ? 2017 MODEL YEAR LX, 2013 ? 2018 MODEL YEAR GX, 2010 ? 2017 MODEL YEAR ES, Updated 9/13/2019
KLG_TI_v.2_091212019-10-15. Service bulletin. EQUIPMENT. Technical Instructions: TECHNICAL INSTRUCTIONS FOR LIMITED SERVICE CAMPAIGN SAFETY CONNECT SYSTEM ? VEHICLE LOCATION INACCURATE CERTAIN 2011 ? 2017 MODEL YEAR LS, 2013 ? 2016 MODEL YEAR LS Hybrid, 2011 ? 2017 MODEL YEAR GS, 2016 ? 2017 MODEL YEAR GS-F, 2013 ? 2017 MODEL YEAR GS Hybrid, 2010 ? 2017 MODEL YEAR IS, 2011 ? 2015 MODEL YEAR IS-C, 2013 ? 2014 MODEL YEAR IS-F, 2015 ? 2017 MODEL YEAR RC, 2015 ? 2017 MODEL YEAR RC-F, 2011 ? 2017 MODEL YEAR CT, 2010 ? 2017 MODEL YEAR RX, 2010 ? 2017 MODEL YEAR RX Hybrid, 2015 ? 2017 MODEL YEAR NX, 2015 ? 2017 MODEL YEAR NX Hybrid, 2013 ? 2017 MODEL YEAR LX, 2013 ? 2018 MODEL YEAR GX, 2010 ? 2017 MODEL YEAR ES, 2013 ? 2017 MODEL YEAR ES Hybrid
KLG_TI_0912192019-10-15. Service bulletin. EQUIPMENT. Technical Instructions: TECHNICAL INSTRUCTIONS FOR LIMITED SERVICE CAMPAIGN SAFETY CONNECT SYSTEM ? VEHICLE LOCATION INACCURATE CERTAIN 2011 ? 2017 MODEL YEAR LS, 2013 ? 2016 MODEL YEAR LS Hybrid, 2011 ? 2017 MODEL YEAR GS, 2016 ? 2017 MODEL YEAR GS-F, 2013 ? 2017 MODEL YEAR GS Hybrid, 2010 ? 2017 MODEL YEAR IS, 2011 ? 2015 MODEL YEAR IS-C, 2013 ? 2014 MODEL YEAR IS-F, 2015 ? 2017 MODEL YEAR RC, 2015 ? 2017 MODEL YEAR RC-F, 2011 ? 2017 MODEL YEAR CT, 2010 ? 2017 MODEL YEAR RX, 2010 ? 2017 MODEL YEAR RX Hybrid, 2015 ? 2017 MODEL YEAR NX, 2015 ? 2017 MODEL YEAR NX Hybrid, 2013 ? 2017 MODEL YEAR LX, 2013 ? 2018 MODEL YEAR GX, 2010 ? 2017 MODEL YEAR ES, 2013 ? 2017 MODEL YEAR ES Hybrid
KLG_Dealer Packa2019-10-15. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). Dealer Package: The Data Communication Module (DCM) in the subject vehicles are equipped with software to identify the location of the vehicle using the Global Positioning System (GPS) to support features of the Safety Connect system. Due to incorrect programming in the DCM software, after November 2nd, 2019, the GPS coordinates for this system will be calculated incorrectly. This will cause the system to use incorrect vehicle coordinates if one of the system?s features is activated.
KLG_Dealer Email2019-10-15. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). Dealer Email: The Data Communication Module (DCM) in the subject vehicles are equipped with software to identify the location of the vehicle using the Global Positioning System (GPS) to support features of the Safety Connect system. Due to incorrect programming in the DCM software, after November 2nd, 2019, the GPS coordinates for this system will be calculated incorrectly. This will cause the system to use incorrect vehicle coordinates if one of the system?s features is activated.
KLG_Region Email2019-10-15. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); ELECTRICAL SYSTEM. Region Email: The Data Communication Module (DCM) in the subject vehicles are equipped with software to identify the location of the vehicle using the Global Positioning System (GPS) to support features of the Safety Connect system. Due to incorrect programming in the DCM software, after November 2nd, 2019, the GPS coordinates for this system will be calculated incorrectly. This will cause the system to use incorrect vehicle coordinates if one of the system?s features is activated.
L-SB-0083-13 REV2017-03-06. Service bulletin. EQUIPMENT; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). LSB: LEXUS MODELS EQUIPPED WITH HARD DISK DRIVE (HDD) NAVIGATION REQUIRE A SPECIAL SERVICE TOOL AND FOLLOW A UNIQUE PROCESS FOR UPDATING MAP, POINTS OF INTEREST, AND SYSTEM SOFTWARE. INSTEAD OF INDIVIDUAL DVDS INSTALLED INTO THE VEHICLE, ALL MAP DATA IS UPLOADED DIRECTLY TO THE HDD SYSTEM. MAP DATA WILL BE RELEASED ANNUALLY THROUGH DIRECT SHIPMENT OF TOW MAP DATA DVDS TO EACH DEALERSHIP SERVICE MANAGER. THE ANNUAL MAP DATA RELEASE MUST THEN BE INSTALLED ONTO THE NAVIGATION UPDATE TOOL. INDIVIDUAL MAP UPDATES ARE THEN LOADED INTO THE VEHICLES WITH SPECIAL MAP SECURITY KEYS. THESE KEYS ARE AVAILABLE THROUGH THE NORMAL PARTS ORDERING SYSTEM. KEYS ARE LOADED ONTO THE NAVIGATION UPDATE TOOL THROUGH A PC OR TECHSTREAM UNIT USING SOFTWARE FOUND ON THE TECHNICAL INFORMATION SYSTEM (TIS). FOLLOW THE PROCEDURES LISTED IN THIS BULLETIN TO: IDENTIFY THE CURRENT VERSION OF MAP DATA ON THE VEHICLE AND ON THE NAVIGATION UPDATE TOOL, LOAD MAP DATA ONTO THE NAVIGATION UPDATE TOOL, LOAD MAP SECURITY KEY(S) ONTO THE NAVIGATION UPDATE TOOL, AND CONNECT THE NAVIGATION UPDATE TOOL TO THE VEHICLE AND UPDATE THE MAP/SYSTEM DATA TO THE LATEST VERSION.
L-SB-0004-132016-03-31. Service bulletin. ENGINE. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
L-SB-0014-132016-03-31. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
L-SB-0004-132016-03-31. Service bulletin. ENGINE. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
L-SB-0106-122016-03-31. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:STARTER ASSEMBLY. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
L-TT-0155-142016-03-31. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
LSB-0019-152015-09-16. Service bulletin. ENGINE. LEXUS: DUE TO PURGE VSV/PCV LINE SEPARATION IN THROTTLE BODY HOUSING, SOME VEHICLES WILL EXPERIENCE MALFUNCTION INDICATOR LAMP (MIL) ON AND NEED TO REPROGRAM ENGINE CONTROL/ECM AND REPLACE PURGE VSV (VACUUM SWITCHING VALVE ASSEMBLY). MODEL 2011-13 CT 200H. *PE

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.