Toyota Corolla Service Bulletins (2023)

123 manufacturer communications on file.

• November 17, 2023•Document ID: 10247818

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL

  Mfr Comm. #:

  TTT074323

  Date Added:

  December 26, 2023

  Manufacturer:

  TOYOTA

  Summary

  TT: MIL On with DTC P045600 Evaporative Emission System Leak Detected (Very Small Leak)

  Associated Products (1)

  2023 Toyota Corolla
  Associated Documents

  • DownloadMC-10247818-0001.pdf↗
• November 10, 2023•Document ID: 10247803

  Service Bulletin/Repair Instructions
  STRUCTURE; ENGINE

  Mfr Comm. #:

  TSB008823

  Date Added:

  December 26, 2023

  Manufacturer:

  TOYOTA

  Summary

  TSB: Some 2020 ? 2024 model year Corolla vehicles may exhibit a vibration or rattle noise from the right-hand engine mounting insulator sub-assembly. This condition will usually go away when the engine Revolutions Per Minute (RPM) are above idle. This condition is typically found on vehicles in warm climates/weather. No Diagnostic Trouble Codes (DTCs) are associated with this condition. Follow the Repair Procedure in this bulletin to improve this condition.

  Associated Products (4)

  2024 Toyota Corolla2023 Toyota Corolla2022 Toyota Corolla2021 Toyota Corolla
  Associated Documents

  • DownloadMC-10247803-0001.pdf↗
• August 31, 2023•Document ID: 10243081

  Service Bulletin/Repair Instructions
  AIR BAGS

  Mfr Comm. #:

  23TC01b

  Date Added:

  October 2, 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-10243081-0001.pdf↗
• August 31, 2023•Document ID: 10243080

  Service Bulletin/Repair Instructions
  LANE DEPARTURE; FORWARD COLLISION AVOIDANCE; ELECTRICAL SYSTEM:SOFTWARE

  Mfr Comm. #:

  23TC01a

  Date Added:

  October 2, 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-10243080-0001.pdf↗
• August 31, 2023•Document ID: 10243079

  Service Bulletin/Repair Instructions
  AIR BAGS; LANE DEPARTURE

  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
  LANE DEPARTURE; AIR BAGS

  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 (37)

  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 Tundra2023 Toyota Venza2022 Toyota 4Runner2022 Toyota Avalon2022 Toyota Camry2022 Toyota Corolla2022 Toyota Corolla Cross2022 Toyota Highlander2022 Toyota Mirai+ 17 more
  Associated Documents

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

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

  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 (43)

  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 C-HR2022 Toyota Camry2022 Toyota Corolla2022 Toyota Corolla Cross+ 23 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 (62)

  2024 Toyota 4Runner2024 Toyota bZ4X2024 Toyota Camry2024 Toyota Corolla2024 Toyota Corolla Cross2024 Toyota Crown2024 Toyota GR Corolla2024 Toyota Grand Highlander2024 Toyota Mirai2024 Toyota Prius2024 Toyota Supra2024 Toyota Tacoma2024 Toyota Tundra2024 Toyota Venza2023 Toyota 4Runner2023 Toyota bZ4X2023 Toyota Camry2023 Toyota Corolla2023 Toyota Corolla Cross2023 Toyota Crown+ 42 more
  Associated Documents

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

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

  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 (25)

  2024 Toyota bZ4X2024 Toyota Corolla Cross2024 Toyota Crown2024 Toyota GR Corolla2024 Toyota Grand Highlander2024 Toyota Mirai2024 Toyota Prius2024 Toyota Tundra2024 Toyota Venza2023 Toyota bZ4X2023 Toyota Corolla2023 Toyota Corolla Cross2023 Toyota Crown2023 Toyota GR Corolla2023 Toyota Mirai2023 Toyota Prius2023 Toyota Tundra2023 Toyota Venza2022 Toyota Corolla Cross2022 Toyota Mirai+ 5 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 (27)

  2024 Toyota 4Runner2024 Toyota bZ4X2024 Toyota Camry2024 Toyota Corolla Cross2024 Toyota Crown2024 Toyota GR Corolla2024 Toyota Grand Highlander2024 Toyota Mirai2024 Toyota Prius2024 Toyota Supra2024 Toyota Tundra2024 Toyota Venza2023 Toyota 4Runner2023 Toyota bZ4X2023 Toyota Camry2023 Toyota Corolla2023 Toyota Corolla Cross2023 Toyota Crown2023 Toyota GR Corolla2023 Toyota Highlander+ 7 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 (16)

  2024 Toyota bZ4X2024 Toyota Corolla Cross2024 Toyota Crown2024 Toyota GR Corolla2024 Toyota Grand Highlander2024 Toyota Tundra2023 Toyota bZ4X2023 Toyota Corolla2023 Toyota Corolla Cross2023 Toyota Crown2023 Toyota Highlander2023 Toyota RAV42023 Toyota Tundra2023 Toyota Venza2022 Toyota Corolla Cross2022 Toyota Tundra
  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
  SUSPENSION; ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC)

  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 (19)

  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 Venza
  Associated Documents

  • DownloadMC-10234338-0001.pdf↗