Technical Service Bulletins (TSBs) for the 2023 Highlander Hybrid 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.

    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 »

    ENGINE AND ENGINE COOLING

    • TSB #T-TT-0733-23

      Date Announced:
      APR 21, 2023
      NHTSA ID:
      #10236209

      TT: Some 2022-2024 MY vehicles equipped with the A25A engine may exhibit a leak from the engine water pump, and/or MIL On condition accompanied by DTC(s): ?P26CA14 Engine Coolant Pump Circuit Short to Ground or Open ?P26CA31 Engine ... Read More »

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

    • TSB #T-TT-0694-22

      Date Announced:
      MAY 18, 2023
      NHTSA ID:
      #10238144

      TT: After jump-starting, the vehicle may experience a no-start condition and multiple DTCs including U010087. Upon investigation, it is found that the engine ECU has been damaged and needs to be replaced. 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 #TSB-0033-23

      Date Announced:
      JUN 08, 2023
      NHTSA ID:
      #10240057

      TSB: Some 2020 ? 2023 model year Highlander Hybrid and 2021 ? 2023 model year RAV4 Hybrid, RAV4 Prime, Sienna Hybrid, and Venza Hybrid vehicles may exhibit a MIL ON condition with one or both of the following Diagnostic Trouble Codes ... Read More »

    FUEL SYSTEM, GASOLINE

    • TSB #TSB-0033-23

      Date Announced:
      JUN 08, 2023
      NHTSA ID:
      #10240057

      TSB: Some 2020 ? 2023 model year Highlander Hybrid and 2021 ? 2023 model year RAV4 Hybrid, RAV4 Prime, Sienna Hybrid, and Venza Hybrid vehicles may exhibit a MIL ON condition with one or both of the following Diagnostic Trouble Codes ... Read More »

    HYBRID PROPULSION SYSTEM

    • TSB #T-SB-0033-22 Rev

      Date Announced:
      AUG 18, 2022
      NHTSA ID:
      #10220238

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

    ELECTRICAL 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 »

    • TSB #23TJ01A

      Date Announced:
      NOV 21, 2023
      NHTSA ID:
      #10247822

      DP: The subject vehicles were delivered with only one (1) Smart Key on select models since October 2022 due to a global semiconductor shortage impacting certain microchips. Read More »

    • TSB #23TJ01P4B

      Date Announced:
      NOV 21, 2023
      NHTSA ID:
      #10247823

      RL: The supply of Smart Keys available for Toyota vehicles has been temporarily limited to one (1) on select models since October 2022 due to global semiconductor shortages impacting certain microchips. Read More »

    • TSB #TSB008523A

      Date Announced:
      NOV 17, 2023
      NHTSA ID:
      #10247820

      TSB: Some 2016 ? 2023 model year Toyota vehicles may exhibit a hybrid system warning lamp occurring in below-freezing temperatures (below 32?F or 0?C). Read More »

    • TSB #TSB008523

      Date Announced:
      NOV 01, 2023
      NHTSA ID:
      #10247796

      TSB: Some 2016 ? 2023 model year Toyota vehicles may exhibit a hybrid system warning lamp occurring in below-freezing temperatures (below 32?F or 0?C). Read More »

    • TSB #T-TT-0733-23

      Date Announced:
      APR 21, 2023
      NHTSA ID:
      #10236209

      TT: Some 2022-2024 MY vehicles equipped with the A25A engine may exhibit a leak from the engine water pump, and/or MIL On condition accompanied by DTC(s): ?P26CA14 Engine Coolant Pump Circuit Short to Ground or Open ?P26CA31 Engine ... Read More »

    • TSB #T-SB-0090-22

      Date Announced:
      SEP 30, 2022
      NHTSA ID:
      #10224590

      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:IGNITION:ANTI-THEFT:IMMOBILIZER/PROXIMITY:KEY/SENDER

    • TSB #23TJ01_P5_Dealer

      Date Announced:
      MAR 12, 2024
      NHTSA ID:
      #10253234

      DP: The subject vehicles were delivered with only one (1) Smart Key on select models since October 2022 due to a global semiconductor shortage impacting certain microchips. Read More »

    • TSB #Toyota Second Ke

      Date Announced:
      MAR 12, 2024
      NHTSA ID:
      #10253235

      The table describes the phases currently planned for the Second Key Delivery Program and the estimated timing of announcement. This table will be updated during each phase launch and as more details become available. Read More »

    • TSB #23TJ01A

      Date Announced:
      NOV 21, 2023
      NHTSA ID:
      #10247822

      DP: The subject vehicles were delivered with only one (1) Smart Key on select models since October 2022 due to a global semiconductor shortage impacting certain microchips. Read More »

    • TSB #23TJ01P4B

      Date Announced:
      NOV 21, 2023
      NHTSA ID:
      #10247823

      RL: The supply of Smart Keys available for Toyota vehicles has been temporarily limited to one (1) on select models since October 2022 due to global semiconductor shortages impacting certain microchips. Read More »

    • TSB #23TJ01P4C

      Date Announced:
      NOV 21, 2023
      NHTSA ID:
      #10247824

      TI: TECHNICAL INSTRUCTIONS FOR 23TJ01 Second Key Delivery Program Multiple Models and Model Years Read More »

    • TSB #23TJ01

      Date Announced:
      NOV 15, 2023
      NHTSA ID:
      #10247809

      TI: TECHNICAL INSTRUCTIONS FOR 23TJ01 Second Key Delivery Program Multiple Models and Model Years Read More »

    ELECTRICAL SYSTEM:PROPULSION SYSTEM:HYBRID MANAGEMENT

    • TSB #TSB008523A

      Date Announced:
      NOV 17, 2023
      NHTSA ID:
      #10247820

      TSB: Some 2016 ? 2023 model year Toyota vehicles may exhibit a hybrid system warning lamp occurring in below-freezing temperatures (below 32?F or 0?C). Read More »

    STRUCTURE

    • TSB #T-SB-0090-22

      Date Announced:
      SEP 30, 2022
      NHTSA ID:
      #10224590

      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 »

    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-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 »

    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 »

    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 #T-SB-0090-22

      Date Announced:
      SEP 30, 2022
      NHTSA ID:
      #10224590

      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-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 »

    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:ELECTRICAL:INFOTAINMENT

    • TSB #T-SB-0015-24

      Date Announced:
      MAR 18, 2024
      NHTSA ID:
      #10253241

      TSB: A head unit software update is now available for 2023 model year Corolla Cross, Corolla Cross Hybrid, Highlander, Highlander Hybrid, and Mirai vehicles equipped with Toyota Multimedia (earlier than version 2050). Read More »

    EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE

    • TSB #T-SB-0015-24

      Date Announced:
      MAR 18, 2024
      NHTSA ID:
      #10253241

      TSB: A head unit software update is now available for 2023 model year Corolla Cross, Corolla Cross Hybrid, Highlander, Highlander Hybrid, and Mirai vehicles equipped with Toyota Multimedia (earlier than version 2050). 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 »

    UNKNOWN OR OTHER

    • 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 »