Toyota Corolla Service Bulletins (2023)

141 manufacturer communications on file.

• August 31, 2023•Document ID: 10243079

  Service Bulletin/Repair Instructions
  LANE DEPARTURE; AIR BAGS

  Mfr Comm. #:

  23TC01

  Date Added:

  October 2, 2023

  Manufacturer:

  TOYOTA

  Summary

  DP: The subject vehicles are equipped with Toyota Safety Sense (TSS) which consists of several driving assist features, including pre-collision braking, lane departure warning, and more. Due to inappropriate programming of the software within the forward recognition camera, there is a possibility that under certain conditions, TSS functions could become inoperative for approximately 4 seconds before rebooting and becoming operational again.

  Associated Products (3)

  2023 Toyota bZ4X2023 Toyota Corolla2023 Toyota Corolla Cross
  Associated Documents

  • DownloadMC-10243079-0001.pdf↗
• August 31, 2023•Document ID: 10242522

  Service Bulletin/Repair Instructions
  AIR BAGS

  Mfr Comm. #:

  23TC01 TI - Publ

  Date Added:

  September 18, 2023

  Manufacturer:

  TOYOTA

  Summary

  TI: TECHNICAL INSTRUCTIONS FOR 23TC01 TOYOTA SAFETY SENSE INOPERATIVE INTERMITTENTLY

  Associated Products (3)

  2023 Toyota bZ4X2023 Toyota Corolla2023 Toyota Corolla Cross
  Associated Documents

  • DownloadMC-10242522-0001.pdf↗
• August 31, 2023•Document ID: 10242521

  Service Bulletin/Repair Instructions
  AIR BAGS; LANE DEPARTURE

  Mfr Comm. #:

  23TC01 Region Le

  Date Added:

  September 18, 2023

  Manufacturer:

  TOYOTA

  Summary

  RL: The subject vehicles are equipped with Toyota Safety Sense (TSS) which consists of several driving assist features, including pre-collision braking, lane departure warning, and more. Due to the programming of the software within the forward recognition camera, there is a possibility that under certain conditions, TSS functions could become inoperative for approximately 4 seconds before rebooting and becoming operational again.

  Associated Products (3)

  2023 Toyota bZ4X2023 Toyota Corolla2023 Toyota Corolla Cross
  Associated Documents

  • DownloadMC-10242521-0001.pdf↗
• August 31, 2023•Document ID: 10242520

  Service Bulletin/Repair Instructions
  LANE DEPARTURE; AIR BAGS

  Mfr Comm. #:

  23TC01 Dealer Pa

  Date Added:

  September 18, 2023

  Manufacturer:

  TOYOTA

  Summary

  DP: The subject vehicles are equipped with Toyota Safety Sense (TSS) which consists of several driving assist features, including pre-collision braking, lane departure warning, and more. Due to inappropriate programming of the software within the forward recognition camera, there is a possibility that under certain conditions, TSS functions could become inoperative for approximately 4 seconds before rebooting and becoming operational again.

  Associated Products (3)

  2023 Toyota bZ4X2023 Toyota Corolla2023 Toyota Corolla Cross
  Associated Documents

  • DownloadMC-10242520-0001.pdf↗
• August 21, 2023•Document ID: 10244115

  Service Bulletin/Repair Instructions
  VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:REFRIGERANT HOSES AND FITTINGS

  Mfr Comm. #:

  TSB005823

  Date Added:

  October 16, 2023

  Manufacturer:

  TOYOTA

  Summary

  TSB: The air conditioning dye injection tool kit has been developed to aid in identifying the location of air conditioning refrigerant leaks. Follow the procedures outlined in this service bulletin to aid in locating, inspecting, and repairing refrigerant leaks

  Associated Products (186)

  2024 Toyota Prius2024 Toyota RAV42023 Toyota 4Runner2023 Toyota bZ4X2023 Toyota Camry2023 Toyota Corolla2023 Toyota Corolla Cross2023 Toyota Crown2023 Toyota GR Corolla2023 Toyota Highlander2023 Toyota Mirai2023 Toyota Prius2023 Toyota RAV42023 Toyota Tundra2023 Toyota Venza2022 Toyota 4Runner2022 Toyota Avalon2022 Toyota Camry2022 Toyota Corolla2022 Toyota Corolla Cross+ 166 more
  Associated Documents

  • DownloadMC-10244115-0001.pdf↗
• August 17, 2023•Document ID: 10244113

  Service Bulletin/Repair Instructions
  VEHICLE SPEED CONTROL; EQUIPMENT; AIR BAGS

  Mfr Comm. #:

  TSB003220

  Date Added:

  October 16, 2023

  Manufacturer:

  TOYOTA

  Summary

  TSB: Replacement certification labels (the vinyl label installed on the driver door or door post) and VIN plates (the metal plate riveted to dashboard) (see Figure 1) for most 1979 ? 2023 model year vehicles may be available provided the requests meet the criteria listed in this Service Bulletin. Follow the Procurement Procedure in this bulletin to request a replacement certification label or VIN plate.

  Associated Products (562)

  2023 Toyota 4Runner2023 Toyota bZ4X2023 Toyota Camry2023 Toyota Corolla2023 Toyota Corolla Cross2023 Toyota Crown2023 Toyota GR Corolla2023 Toyota Highlander2023 Toyota Mirai2023 Toyota Prius2023 Toyota RAV42023 Toyota Tacoma2023 Toyota Tundra2023 Toyota Venza2022 Toyota 4Runner2022 Toyota Avalon2022 Toyota Camry2022 Toyota C-HR2022 Toyota Corolla2022 Toyota Corolla Cross+ 542 more
  Associated Documents

  • DownloadMC-10244113-0001.pdf↗
• August 17, 2023•Document ID: 10244111

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER; COMMUNICATION:MANUFACTURER TELEMATICS

  Mfr Comm. #:

  TTT073723

  Date Added:

  October 16, 2023

  Manufacturer:

  TOYOTA

  Summary

  TT: A very small percentage of customers 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. Toyota has developed and provided the following Telematics Diagnostic Guide to assist dealer technicians.

  Associated Products (128)

  2024 Toyota 4Runner2024 Toyota bZ4X2024 Toyota Camry2024 Toyota Corolla2024 Toyota Corolla Cross2024 Toyota Crown2024 Toyota Grand Highlander2024 Toyota GR Corolla2024 Toyota Highlander2024 Toyota Mirai2024 Toyota Prius2024 Toyota RAV42024 Toyota Sequoia2024 Toyota Sienna2024 Toyota Supra2024 Toyota Tacoma2024 Toyota Tundra2024 Toyota Venza2023 Toyota 4Runner2023 Toyota bZ4X+ 108 more
  Associated Documents

  • DownloadMC-10244111-0001.pdf↗
• July 27, 2023•Document ID: 10241413

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM); SERVICE BRAKES, ELECTRIC:SOFTWARE/PROGRAMMING

  Mfr Comm. #:

  23TC02a

  Date Added:

  August 28, 2023

  Manufacturer:

  TOYOTA

  Summary

  RL: Due to certain programming in the brake ECU, under certain conditions, DTC U0100 is stored and cannot be cleared even though a technician attempts to do so. This condition does not affect the vehicle operation.

  Associated Products (1)

  2023 Toyota Corolla
  Associated Documents

  • DownloadMC-10241413-0001.pdf↗
• July 27, 2023•Document ID: 10241412

  Service Bulletin/Repair Instructions
  SERVICE BRAKES; ELECTRICAL SYSTEM:CYBERSECURITY

  Mfr Comm. #:

  23TC02

  Date Added:

  August 28, 2023

  Manufacturer:

  TOYOTA

  Summary

  DP: Due to certain programming in the brake ECU, under certain conditions, DTC U0100 is stored and cannot be cleared even though a technician attempts to do so. This condition does not affect the vehicle operation.

  Associated Products (1)

  2023 Toyota Corolla
  Associated Documents

  • DownloadMC-10241412-0001.pdf↗
• July 27, 2023•Document ID: 10241381

  Service Bulletin/Repair Instructions
  SERVICE BRAKES, ELECTRIC

  Mfr Comm. #:

  23TC02

  Date Added:

  August 28, 2023

  Manufacturer:

  TOYOTA

  Summary

  TI: TECHNICAL INSTRUCTIONS FOR SPECIAL SERVICE CAMPAIGN 23TC02 BRAKE ECU REPROGRAM CERTAIN 2023 MODEL YEAR COROLLA HV

  Associated Products (1)

  2023 Toyota Corolla
  Associated Documents

  • DownloadMC-10241381-0001.pdf↗
• July 25, 2023•Document ID: 10241404

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE

  Mfr Comm. #:

  T-SB-0107-20

  Date Added:

  August 28, 2023

  Manufacturer:

  TOYOTA

  Summary

  TSB: 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 Global Techstream+ (GTS+) ECU flash reprogramming procedures and outlines use of the Technical Information System (TIS) and the Calibration Update Wizard+ (CUW+). To ensure the correct ECU software is installed, ECUs will require a Security Signature before the ECU will initialize the flash reprogramming sequence. This bulletin also details the process for acquiring a Security Signature from TIS during the GTS+ ECU flash reprogramming process.

  Associated Products (32)

  2024 Toyota bZ4X2024 Toyota Corolla2024 Toyota Corolla Cross2024 Toyota Crown2024 Toyota Grand Highlander2024 Toyota GR Corolla2024 Toyota Highlander2024 Toyota Mirai2024 Toyota Prius2024 Toyota RAV42024 Toyota Sequoia2024 Toyota Tundra2024 Toyota Venza2023 Toyota bZ4X2023 Toyota Corolla2023 Toyota Corolla Cross2023 Toyota Crown2023 Toyota GR Corolla2023 Toyota Mirai2023 Toyota Prius+ 12 more
  Associated Documents

  • DownloadMC-10241404-0001.pdf↗
• July 3, 2023•Document ID: 10241387

  Service Bulletin/Repair Instructions
  WHEELS

  Mfr Comm. #:

  T-SB-0042-23

  Date Added:

  August 28, 2023

  Manufacturer:

  TOYOTA

  Summary

  TSB: Some 2023 ? 2024 model year Toyota vehicles use hub bolts in place of studs/nuts to fasten the wheels to the vehicle. If non-compatible wheels or hub bolts/nuts are installed, there is increased risk that the wheel(s) could come off resulting in a crash. This service bulletin outlines the physical differences and precautions that should be taken when servicing different wheel and wheel fastener types.

  Associated Products (34)

  2024 Toyota 4Runner2024 Toyota bZ4X2024 Toyota Camry2024 Toyota Corolla2024 Toyota Corolla Cross2024 Toyota Crown2024 Toyota Grand Highlander2024 Toyota GR Corolla2024 Toyota Highlander2024 Toyota Mirai2024 Toyota Prius2024 Toyota RAV42024 Toyota Sequoia2024 Toyota Sienna2024 Toyota Supra2024 Toyota Tundra2024 Toyota Venza2023 Toyota 4Runner2023 Toyota bZ4X2023 Toyota Camry+ 14 more
  Associated Documents

  • DownloadMC-10241387-0001.pdf↗
• May 1, 2023•Document ID: 10238126

  Service Bulletin/Repair Instructions
  EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.

  Mfr Comm. #:

  T-TT-0734-23

  Date Added:

  June 26, 2023

  Manufacturer:

  TOYOTA

  Summary

  TT: When setting up the Toyota Audio Multimedia (21MM) user profile, if the QR code is not working please use the following recommendations.

  Associated Products (22)

  2024 Toyota bZ4X2024 Toyota Corolla2024 Toyota Corolla Cross2024 Toyota Crown2024 Toyota Grand Highlander2024 Toyota GR Corolla2024 Toyota Highlander2024 Toyota RAV42024 Toyota Sequoia2024 Toyota Tundra2024 Toyota Venza2023 Toyota bZ4X2023 Toyota Corolla2023 Toyota Corolla Cross2023 Toyota Crown2023 Toyota Highlander2023 Toyota RAV42023 Toyota Sequoia2023 Toyota Tundra2023 Toyota Venza+ 2 more
  Associated Documents

  • DownloadMC-10238126-0001.pdf↗
• April 13, 2023•Document ID: 10236199

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY:BUMPERS:ACTIVE SHUTTERS/GRILL; UNKNOWN OR OTHER

  Mfr Comm. #:

  23TD01 Corolla L

  Date Added:

  May 15, 2023

  Manufacturer:

  TOYOTA

  Summary

  DP: The front license plate bracket provided with the vehicle has clips that potentially interfere with the lower grille assembly. This interference can make it more difficult to install the front license plate bracket.

  Associated Products (1)

  2023 Toyota Corolla
  Associated Documents

  • DownloadMC-10236199-0001.pdf↗
• April 12, 2023•Document ID: 10236197

  Service Bulletin/Repair Instructions
  ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC); SUSPENSION

  Mfr Comm. #:

  T-TT-0731-23

  Date Added:

  May 15, 2023

  Manufacturer:

  TOYOTA

  Summary

  TT: Some customers may complain of the suspension feeling stiff while driving or going over bumps. Some dealerships may have forgotten to remove the transportation spacer during the PDS process which can result in a stiffer than normal suspension feel.

  Associated Products (1)

  2023 Toyota Corolla
  Associated Documents

  • DownloadMC-10236197-0001.pdf↗
• March 27, 2023•Document ID: 10234338

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICAL

  Mfr Comm. #:

  T-TT-0699-22 Rev

  Date Added:

  April 17, 2023

  Manufacturer:

  TOYOTA

  Summary

  TT: Some Model Year 2018-2023 vehicles equipped with A25A-FKS/FXS or M20A-FKS/FXS engines may display the following message ?Engine Maintenance Required Visit Your Dealer? on the combination meter

  Associated Products (32)

  2023 Toyota Camry2023 Toyota Corolla2023 Toyota Corolla Cross2023 Toyota Highlander2023 Toyota RAV42023 Toyota Venza2022 Toyota Avalon2022 Toyota Camry2022 Toyota Corolla2022 Toyota Corolla Cross2022 Toyota Highlander2022 Toyota RAV42022 Toyota Venza2021 Toyota Avalon2021 Toyota Camry2021 Toyota Corolla2021 Toyota Highlander2021 Toyota RAV42021 Toyota Venza2020 Toyota Avalon+ 12 more
  Associated Documents

  • DownloadMC-10234338-0001.pdf↗
• March 15, 2023•Document ID: 10234325

  Service Bulletin/Repair Instructions
  STEERING

  Mfr Comm. #:

  T-SB-0120-20 Rev

  Date Added:

  April 17, 2023

  Manufacturer:

  TOYOTA

  Summary

  TSB: Some 2021 ? 2023 model year Toyota vehicles may require the download and installation of vehicle specific software or configuration software when the Electronic Control Unit (ECU) is replaced. Techstream software has been modified to indicate when configuration software is required. A new Configure column has been added to the Techstream Health Check Results screen to show when configuration software is available for a specific ECU. Follow the Operation Procedure in this bulletin to complete the ECU Software Configure Process.

  Associated Products (9)

  2023 Toyota bZ4X2023 Toyota Corolla2023 Toyota Corolla Cross2023 Toyota Prius2023 Toyota Tundra2023 Toyota Venza2022 Toyota Tundra2022 Toyota Venza2021 Toyota Venza
  Associated Documents

  • DownloadMC-10234325-0001.pdf↗
• March 3, 2023•Document ID: 10234310

  Service Bulletin/Repair Instructions
  EXTERIOR LIGHTING; BACK OVER PREVENTION

  Mfr Comm. #:

  T-SB-0012-23

  Date Added:

  April 17, 2023

  Manufacturer:

  TOYOTA

  Summary

  TSB: Some 2023 model year bZ4X vehicles with multimedia version 1505 or older; Corolla, Corolla Hybrid, and Corolla Hatchback vehicles with multimedia version 1506 or older; and Crown vehicles with multimedia version 1511 or older may exhibit one or more of the following conditions: ?Head unit rebooting. ?User Profile enhancements. ??Software Update Complete? pop-up message. ?Display screen frozen/non-responsive. ?Navigation items show on non-navigation multimedia system (Mexico market only). ?Newly added phone contact name will not show on display screen. ?Noise during hands-free calls. ?GPS location indicator stays on after map is off. ?Map does not display. ?Route guidance guides to incorrect side. ?App button(s) appear pressed. ?Sonar system display will not update on display screen. ?Back-up camera messages are in English instead of non-English. ?Incorrect HD radio icon color. ?Bluetooth profile version update. A software update is now available to address these conditions. Follow the Software Update Procedure in this bulletin to update the software.

  Associated Products (2)

  2023 Toyota bZ4X2023 Toyota Corolla
  Associated Documents

  • DownloadMC-10234310-0001.pdf↗
• December 15, 2022•Document ID: 10230371

  Service Bulletin/Repair Instructions
  EQUIPMENT:ELECTRICAL

  Mfr Comm. #:

  T-TT-0678-21 Rev

  Date Added:

  January 17, 2023

  Manufacturer:

  TOYOTA

  Summary

  TT: Some 19CY LG DCM equipped vehicles may not be able to complete the firmware update due to not having an active account or waived services during the trial. Follow the steps below to enable ?Temp DCM Activation?.

  Associated Products (16)

  2023 Toyota Corolla2022 Toyota Avalon2022 Toyota Camry2022 Toyota Corolla2022 Toyota RAV42022 Toyota Sienna2022 Toyota Venza2021 Toyota Avalon2021 Toyota Camry2021 Toyota Corolla2021 Toyota RAV42021 Toyota Sienna2021 Toyota Venza2020 Toyota Camry2020 Toyota Corolla2020 Toyota RAV4
  Associated Documents

  • DownloadMC-10230371-0001.pdf↗
• November 28, 2022•Document ID: 10227903

  Service Bulletin/Repair Instructions
  COMMUNICATION

  Mfr Comm. #:

  T-SB-0031-22 Obs

  Date Added:

  December 19, 2022

  Manufacturer:

  TOYOTA

  Summary

  OBSOLETE NOTICE November 28, 2022: This bulletin is now obsolete. Please see T-SB-0105-22

  Associated Products (11)

  2024 Cadillac Lyriq2023 Toyota 4Runner2023 Toyota bZ4X2023 Toyota Camry2023 Toyota Corolla2023 Toyota Highlander2023 Toyota Mirai2023 Toyota Supra2023 Toyota Tacoma2023 Toyota Tundra2023 Toyota Venza
  Associated Documents

  • DownloadMC-10227903-0001.pdf↗