Technical Service Bulletins (TSBs) for the 2023 Corolla are official communications between Toyota & their dealerships that describe processes for troubleshooting or fixing certain common problems. All vehicle manufacturers are required by U.S. law to make their TSBs available to the public.

    STEERING

    • TSB #T-SB-0120-20 Rev

      Date Announced:
      MAR 15, 2023
      NHTSA ID:
      #10234325

      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. Read More »

    SUSPENSION

    • TSB #T-TT-0731-23

      Date Announced:
      APR 12, 2023
      NHTSA ID:
      #10236197

      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 ... Read More »

    BRAKES (PWS)

    • TSB #23TC02

      Date Announced:
      JUL 27, 2023
      NHTSA ID:
      #10241412

      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. Read More »

    SERVICE BRAKES, HYDRAULIC

    • TSB #TSB010421

      Date Announced:
      FEB 15, 2024
      NHTSA ID:
      #10252251

      TSB: Some 2018 ? 2024 model year Toyota vehicles equipped with an A25A-FKS, A25A-FXS, M20A-FKS, or M20A-FXS engine may exhibit one or more of the following conditions: ?Milky/discolored engine oil. Read More »

    SERVICE BRAKES, ELECTRIC

    • TSB #23TC02

      Date Announced:
      JUL 27, 2023
      NHTSA ID:
      #10241381

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

    SERVICE BRAKES, ELECTRIC:SOFTWARE/PROGRAMMING

    • TSB #23TC02a

      Date Announced:
      JUL 27, 2023
      NHTSA ID:
      #10241413

      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. Read More »

    ENGINE (PWS)

    • TSB #TSB008823

      Date Announced:
      NOV 10, 2023
      NHTSA ID:
      #10247803

      TSB: Some 2020 ? 2024 model year Corolla vehicles may exhibit a vibration or rattle noise from the right-hand engine mounting insulator sub-assembly. Read More »

    ENGINE AND ENGINE COOLING

    • TSB #T-PANT-2024-004-

      Date Announced:
      MAR 04, 2024
      NHTSA ID:
      #10253223

      This is to advise of various price adjustments that will affect Toyota Genuine Motor Oil and Long Life Coolant, effective March 1, 2024. These products are ordered through the Toyota Complete Maintenance Care (TCMC) website. Read More »

    ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICAL

    • TSB #T-TT-0699-22 Rev

      Date Announced:
      MAR 27, 2023
      NHTSA ID:
      #10234338

      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 Read More »

    ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION

    • TSB #T-PANT-2024-004-

      Date Announced:
      MAR 04, 2024
      NHTSA ID:
      #10253223

      This is to advise of various price adjustments that will affect Toyota Genuine Motor Oil and Long Life Coolant, effective March 1, 2024. These products are ordered through the Toyota Complete Maintenance Care (TCMC) website. Read More »

    ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM)

    • TSB #23TC02a

      Date Announced:
      JUL 27, 2023
      NHTSA ID:
      #10241413

      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. Read More »

    ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE

    • TSB #T-SB-0107-20

      Date Announced:
      JUL 25, 2023
      NHTSA ID:
      #10241404

      TSB: Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated without replacing the ECU. Read More »

    ENGINE AND ENGINE COOLING:COOLING SYSTEM

    • TSB #TSB010421

      Date Announced:
      FEB 15, 2024
      NHTSA ID:
      #10252251

      TSB: Some 2018 ? 2024 model year Toyota vehicles equipped with an A25A-FKS, A25A-FXS, M20A-FKS, or M20A-FXS engine may exhibit one or more of the following conditions: ?Milky/discolored engine oil. Read More »

    ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL

    • TSB #TTT074323

      Date Announced:
      NOV 17, 2023
      NHTSA ID:
      #10247818

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

    ELECTRICAL SYSTEM

    • TSB #T-SB-0013-24

      Date Announced:
      MAR 04, 2024
      NHTSA ID:
      #10253225

      TSB: 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. Read More »

    • TSB #TSB010421

      Date Announced:
      FEB 15, 2024
      NHTSA ID:
      #10252251

      TSB: Some 2018 ? 2024 model year Toyota vehicles equipped with an A25A-FKS, A25A-FXS, M20A-FKS, or M20A-FXS engine may exhibit one or more of the following conditions: ?Milky/discolored engine oil. Read More »

    • TSB #T-SB-0100-22

      Date Announced:
      NOV 22, 2022
      NHTSA ID:
      #10227896

      Pre-Delivery Service (PDS) is a critical step in satisfying our new car customers. Customer feedback indicates the following areas deserve special attention when performing PDS: ?Careful inspection for paint chips/scratches and body ... Read More »

    • TSB #T-SB-0099-22

      Date Announced:
      NOV 09, 2022
      NHTSA ID:
      #10227909

      TSB: Pre-Delivery Service (PDS) is a critical step in satisfying our new car customers. Customer feedback indicates the following areas deserve special attention when performing PDS: ?Careful inspection for paint chips/scratches and ... Read More »

    ELECTRICAL SYSTEM:CYBERSECURITY

    • TSB #23TC02

      Date Announced:
      JUL 27, 2023
      NHTSA ID:
      #10241412

      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. Read More »

    ELECTRICAL SYSTEM:12V/24V/48V BATTERY

    • TSB #T-SB-0033-22 Rev

      Date Announced:
      NOV 22, 2022
      NHTSA ID:
      #10227923

      TSB: Hybrid vehicles are equipped with two types of batteries: ?Hybrid vehicle (HV) battery. ?Auxiliary (12V) battery. Read More »

    • TSB #T-SB-0032-22 Rev

      Date Announced:
      JUL 22, 2022
      NHTSA ID:
      #10217803

      TSB: A battery in a stored vehicle is subject to conditions that can reduce its performance and service life. These conditions include storage period, temperature, parasitic drain, and battery load. Read More »

    • TSB #T-SB-0032-22

      Date Announced:
      APR 01, 2022
      NHTSA ID:
      #10211786

      TSB: A battery in a stored vehicle is subject to conditions that can reduce its performance and service life. These conditions include storage period, temperature, parasitic drain, and battery load. Read More »

    ELECTRICAL SYSTEM:SOFTWARE

    • TSB #23TC01a

      Date Announced:
      AUG 31, 2023
      NHTSA ID:
      #10243080

      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. Read More »

    EXTERIOR LIGHTING

    • TSB #T-SB-0012-23

      Date Announced:
      MAR 03, 2023
      NHTSA ID:
      #10234310

      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 ... Read More »

    VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:REFRIGERANT HOSES AND FITTINGS

    • TSB #TSB005823

      Date Announced:
      AUG 21, 2023
      NHTSA ID:
      #10244115

      TSB: The air conditioning dye injection tool kit has been developed to aid in identifying the location of air conditioning refrigerant leaks. Read More »

    AIR BAGS

    • TSB #23TC01

      Date Announced:
      AUG 31, 2023
      NHTSA ID:
      #10243079

      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. Read More »

    • TSB #23TC01b

      Date Announced:
      AUG 31, 2023
      NHTSA ID:
      #10243081

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

    • TSB #23TC01 Dealer Pa

      Date Announced:
      AUG 31, 2023
      NHTSA ID:
      #10242520

      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. Read More »

    • TSB #23TC01 Region Le

      Date Announced:
      AUG 31, 2023
      NHTSA ID:
      #10242521

      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. Read More »

    • TSB #23TC01 TI - Publ

      Date Announced:
      AUG 31, 2023
      NHTSA ID:
      #10242522

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

    • TSB #TSB003220

      Date Announced:
      AUG 17, 2023
      NHTSA ID:
      #10244113

      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 ... Read More »

    • TSB #T-SB-0029-22 Rev

      Date Announced:
      NOV 22, 2022
      NHTSA ID:
      #10227925

      TSB: 2023 model year Toyota vehicles are equipped with driver side floor mat retainers to secure the floor mat in the correct position. In addition, some models may also utilize retainers for passenger side and rear seat floor mats. Read More »

    • TSB #T-SB-0029-22

      Date Announced:
      MAR 29, 2022
      NHTSA ID:
      #10210381

      TSB: 2023 model year Toyota vehicles are equipped with driver side floor mat retainers to secure the floor mat in the correct position. In addition, some models may also utilize retainers for passenger side and rear seat floor mats. Read More »

    STRUCTURE

    • TSB #TSB008823

      Date Announced:
      NOV 10, 2023
      NHTSA ID:
      #10247803

      TSB: Some 2020 ? 2024 model year Corolla vehicles may exhibit a vibration or rattle noise from the right-hand engine mounting insulator sub-assembly. Read More »

    • TSB #T-SB-0100-22

      Date Announced:
      NOV 22, 2022
      NHTSA ID:
      #10227896

      Pre-Delivery Service (PDS) is a critical step in satisfying our new car customers. Customer feedback indicates the following areas deserve special attention when performing PDS: ?Careful inspection for paint chips/scratches and body ... Read More »

    • TSB #T-SB-0099-22

      Date Announced:
      NOV 09, 2022
      NHTSA ID:
      #10227909

      TSB: Pre-Delivery Service (PDS) is a critical step in satisfying our new car customers. Customer feedback indicates the following areas deserve special attention when performing PDS: ?Careful inspection for paint chips/scratches and ... Read More »

    STRUCTURE:BODY:BUMPERS:ACTIVE SHUTTERS/GRILL

    • TSB #23TD01 Corolla L

      Date Announced:
      APR 13, 2023
      NHTSA ID:
      #10236199

      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. Read More »

    VEHICLE SPEED CONTROL

    • TSB #TSB003220

      Date Announced:
      AUG 17, 2023
      NHTSA ID:
      #10244113

      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 ... Read More »

    WHEELS

    • TSB #T-SB-0042-23

      Date Announced:
      JUL 03, 2023
      NHTSA ID:
      #10241387

      TSB: Some 2023 ? 2024 model year Toyota vehicles use hub bolts in place of studs/nuts to fasten the wheels to the vehicle. Read More »

    • TSB #T-SB-0105-22

      Date Announced:
      NOV 28, 2022
      NHTSA ID:
      #10227901

      TSB: During the manufacturing process, tires are mounted on the vehicle as matched sets to help reduce conditions such as pulling or drifting. Read More »

    • TSB #T-SB-0031-22 Rev

      Date Announced:
      AUG 31, 2022
      NHTSA ID:
      #10220209

      TSB: During the manufacturing process, tires are mounted on the vehicle as matched sets to help reduce conditions such as pulling or drifting. Read More »

    • TSB #T-SB-0031-22 Rev

      Date Announced:
      JUL 21, 2022
      NHTSA ID:
      #10217802

      TSB: During the manufacturing process, tires are mounted on the vehicle as matched sets to help reduce conditions such as pulling or drifting. Read More »

    TRAILER HITCHES

    • TSB #T-SB-0105-22

      Date Announced:
      NOV 28, 2022
      NHTSA ID:
      #10227901

      TSB: During the manufacturing process, tires are mounted on the vehicle as matched sets to help reduce conditions such as pulling or drifting. Read More »

    ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC)

    • TSB #T-TT-0731-23

      Date Announced:
      APR 12, 2023
      NHTSA ID:
      #10236197

      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 ... Read More »

    FORWARD COLLISION AVOIDANCE

    • TSB #23TC01a

      Date Announced:
      AUG 31, 2023
      NHTSA ID:
      #10243080

      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. Read More »

    LANE DEPARTURE

    • TSB #TSB010421

      Date Announced:
      FEB 15, 2024
      NHTSA ID:
      #10252251

      TSB: Some 2018 ? 2024 model year Toyota vehicles equipped with an A25A-FKS, A25A-FXS, M20A-FKS, or M20A-FXS engine may exhibit one or more of the following conditions: ?Milky/discolored engine oil. Read More »

    • TSB #23TC01

      Date Announced:
      AUG 31, 2023
      NHTSA ID:
      #10243079

      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. Read More »

    • TSB #23TC01a

      Date Announced:
      AUG 31, 2023
      NHTSA ID:
      #10243080

      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. Read More »

    • TSB #23TC01 Dealer Pa

      Date Announced:
      AUG 31, 2023
      NHTSA ID:
      #10242520

      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. Read More »

    • TSB #23TC01 Region Le

      Date Announced:
      AUG 31, 2023
      NHTSA ID:
      #10242521

      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. Read More »

    BACK OVER PREVENTION

    • TSB #TTT074423

      Date Announced:
      NOV 29, 2023
      NHTSA ID:
      #10247830

      TT: Some 2022/2023 Japan built (VIN JTD) Corolla/Corolla HV sedan vehicles may have a rattle noise coming from the headliner. Read More »

    • TSB #T-SB-0012-23

      Date Announced:
      MAR 03, 2023
      NHTSA ID:
      #10234310

      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 ... Read More »

    COMMUNICATION

    • TSB #T-SB-0032-22 Obs

      Date Announced:
      NOV 28, 2022
      NHTSA ID:
      #10227902

      OBSOLETE NOTICE November 28, 2022: This bulletin is now obsolete. Please see T-SB-0104-22. Read More »

    • TSB #T-SB-0031-22 Obs

      Date Announced:
      NOV 28, 2022
      NHTSA ID:
      #10227903

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

    COMMUNICATION:MANUFACTURER TELEMATICS

    • TSB #TTT073723

      Date Announced:
      AUG 17, 2023
      NHTSA ID:
      #10244111

      TT: A very small percentage of customers experience operational difficulties with some telematics features which they cannot resolve on their own. Read More »

    • TSB #TTT069522

      Date Announced:
      MAY 13, 2022
      NHTSA ID:
      #10220154

      TT: To improve customer support of telematics connected services features, additional resources have been provided in the Service Lane - Knowledge Center. Read More »

    EQUIPMENT

    • TSB #TSB003220

      Date Announced:
      AUG 17, 2023
      NHTSA ID:
      #10244113

      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 ... Read More »

    • TSB #T-SB-0104-22

      Date Announced:
      NOV 28, 2022
      NHTSA ID:
      #10227900

      TSB: A battery in a stored vehicle is subject to conditions that can reduce its performance and service life. These conditions include storage period, temperature, parasitic drain, and battery load. Read More »

    • TSB #T-SB-0036-22 Rev

      Date Announced:
      NOV 22, 2022
      NHTSA ID:
      #10227926

      TSB: Long-term or off-site storage requires special care to keep vehicles factory fresh and ready for delivery. Read More »

    • TSB #T-SB-0100-22

      Date Announced:
      NOV 22, 2022
      NHTSA ID:
      #10227896

      Pre-Delivery Service (PDS) is a critical step in satisfying our new car customers. Customer feedback indicates the following areas deserve special attention when performing PDS: ?Careful inspection for paint chips/scratches and body ... Read More »

    • TSB #T-SB-0099-22

      Date Announced:
      NOV 09, 2022
      NHTSA ID:
      #10227909

      TSB: Pre-Delivery Service (PDS) is a critical step in satisfying our new car customers. Customer feedback indicates the following areas deserve special attention when performing PDS: ?Careful inspection for paint chips/scratches and ... Read More »

    • TSB #T-SB-0084-22

      Date Announced:
      SEP 14, 2022
      NHTSA ID:
      #10224171

      TSB: Pre-Delivery Service (PDS) is a critical step in satisfying our new car customers. Customer feedback indicates the following areas deserve special attention when performing PDS: ?Careful inspection for paint chips/scratches and ... Read More »

    • TSB #T-SB-0032-22 Rev

      Date Announced:
      SEP 12, 2022
      NHTSA ID:
      #10224168

      TSB: A battery in a stored vehicle is subject to conditions that can reduce its performance and service life. These conditions include storage period, temperature, parasitic drain, and battery load. Read More »

    • TSB #T-SB-0029-22 Rev

      Date Announced:
      AUG 18, 2022
      NHTSA ID:
      #10220239

      TSB: 2023 model year Toyota vehicles are equipped with driver side floor mat retainers to secure the floor mat in the correct position. In addition, some models may also utilize retainers for passenger side and rear seat floor mats. Read More »

    • TSB #T-SB-0032-22 Rev

      Date Announced:
      JUL 22, 2022
      NHTSA ID:
      #10217803

      TSB: A battery in a stored vehicle is subject to conditions that can reduce its performance and service life. These conditions include storage period, temperature, parasitic drain, and battery load. Read More »

    • TSB #T-SB-0036-22

      Date Announced:
      APR 08, 2022
      NHTSA ID:
      #10211804

      TSB: Long-term or off-site storage requires special care to keep vehicles factory fresh and ready for delivery. Read More »

    EQUIPMENT:ELECTRICAL

    • TSB #T-TT-0678-21 Rev

      Date Announced:
      DEC 15, 2022
      NHTSA ID:
      #10230371

      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?. Read More »

    EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.

    • TSB #T-TT-0734-23

      Date Announced:
      MAY 01, 2023
      NHTSA ID:
      #10238126

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

    EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

    • TSB #T-SB-0036-22 Rev

      Date Announced:
      AUG 18, 2022
      NHTSA ID:
      #10220240

      TSB: Long-term or off-site storage requires special care to keep vehicles factory fresh and ready for delivery. Read More »

    EQUIPMENT ADAPTIVE/MOBILITY

    • TSB #T-SB-0029-22 Rev

      Date Announced:
      NOV 22, 2022
      NHTSA ID:
      #10227925

      TSB: 2023 model year Toyota vehicles are equipped with driver side floor mat retainers to secure the floor mat in the correct position. In addition, some models may also utilize retainers for passenger side and rear seat floor mats. Read More »

    • TSB #T-SB-0029-22

      Date Announced:
      MAR 29, 2022
      NHTSA ID:
      #10210381

      TSB: 2023 model year Toyota vehicles are equipped with driver side floor mat retainers to secure the floor mat in the correct position. In addition, some models may also utilize retainers for passenger side and rear seat floor mats. Read More »

    UNKNOWN OR OTHER

    • TSB #TTT074423

      Date Announced:
      NOV 29, 2023
      NHTSA ID:
      #10247830

      TT: Some 2022/2023 Japan built (VIN JTD) Corolla/Corolla HV sedan vehicles may have a rattle noise coming from the headliner. Read More »

    • TSB #TTT073723

      Date Announced:
      AUG 17, 2023
      NHTSA ID:
      #10244111

      TT: A very small percentage of customers experience operational difficulties with some telematics features which they cannot resolve on their own. Read More »

    • TSB #23TD01 Corolla L

      Date Announced:
      APR 13, 2023
      NHTSA ID:
      #10236199

      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. Read More »

    • TSB #T-SB-0029-22

      Date Announced:
      MAR 29, 2022
      NHTSA ID:
      #10210381

      TSB: 2023 model year Toyota vehicles are equipped with driver side floor mat retainers to secure the floor mat in the correct position. In addition, some models may also utilize retainers for passenger side and rear seat floor mats. Read More »