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TSB List for the 2023 Toyota Sienna

Technical Service Bulletins (TSBs) for the 2023 Sienna 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
  • ENGINE (PWS)
  • ENGINE AND ENGINE COOLING
  • ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICAL
  • ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION
  • ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE
  • ENGINE AND ENGINE COOLING:COOLING SYSTEM
  • ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
  • ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV)
  • FUEL SYSTEM, GASOLINE
  • ELECTRICAL SYSTEM
  • ELECTRICAL SYSTEM:12V/24V/48V BATTERY
  • ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:IMMOBILIZER/PROXIMITY:KEY/SENDER
  • ELECTRICAL SYSTEM:INSTRUMENT PANEL:FUEL GAUGE
  • ELECTRICAL SYSTEM:PROPULSION SYSTEM:HYBRID MANAGEMENT
  • ELECTRICAL SYSTEM:PROPULSION SYSTEM:HYBRID MANAGEMENT:POWER CONTROL UNIT/MODULE (HPCU)
  • VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:REFRIGERANT HOSES AND FITTINGS
  • AIR BAGS
  • VEHICLE SPEED CONTROL
  • WHEELS
  • TRAILER HITCHES
  • LANE DEPARTURE
  • BACK OVER PREVENTION
  • COMMUNICATION
  • COMMUNICATION:MANUFACTURER TELEMATICS
  • EQUIPMENT
  • EQUIPMENT ADAPTIVE/MOBILITY
  • UNKNOWN OR OTHER
  • 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 (PWS)

    • TSB #T-TT-0714-22

      Date Announced:
      NOV 07, 2022
      NHTSA ID:
      #10227905

      TT: Some MY2022-2023 vehicles equipped with A25A-FKS or A25A-FXS engines may experience a MIL on condition with one or more of the following DTCs: P26CA12, P26CA14, P26CB71, P26CA31, P26CE37 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 »

    • TSB #T-TT-0726-23

      Date Announced:
      JUL 10, 2023
      NHTSA ID:
      #10241394

      TT: Some 2021 - 2023 Highlander HV, RAV4 HV and Sienna HV vehicles equipped with Rear Motor Generator, MGR (Q610), may duplicate an abnormal noise (Drone, Growl, Humming, and/or other) from the MGR at various vehicle speeds and normal ... 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-TT-0726-23

      Date Announced:
      MAR 23, 2023
      NHTSA ID:
      #10234337

      TT: Some 2021 - 2023 Highlander HV, RAV4 HV and Sienna HV vehicles equipped with Rear Motor Generator, MGR (Q610), may duplicate an abnormal noise (Drone, Growl, Humming, and/or other) from the MGR at various vehicle speeds and normal ... Read More »

    • TSB #T-TT-0723-23

      Date Announced:
      MAR 20, 2023
      NHTSA ID:
      #10234331

      TT: Some 2021 to 2023 MY vehicles equipped Rear Motor Generator, MGR (Q610) may experience an oil leak concern. This issue is currently under investigation 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):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 #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 »

    ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV)

    • TSB #LSB006523

      Date Announced:
      DEC 19, 2024
      NHTSA ID:
      #10249327

      TT: Engine Oil Leak between the Lower Oil Pan and Crank Case 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 »

    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 #TSB001823

      Date Announced:
      FEB 15, 2024
      NHTSA ID:
      #10252252

      TSB: Some 2021 ? 2023 model year Sienna Hybrid vehicles may exhibit a MIL ON condition with Diagnostic Trouble Code (DTC) P060694 (Hybrid/EV Powertrain Control Module Processor Unexpected Operation) present. 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 #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-0018-23

      Date Announced:
      APR 19, 2023
      NHTSA ID:
      #10236206

      TSB: Some 2021 ? 2023 model year Sienna Hybrid vehicles may exhibit a MIL ON condition with Diagnostic Trouble Code (DTC) P060694 (Hybrid/EV Powertrain Control Module Processor Unexpected Operation) present. 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 »

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

    • TSB #23TJ01_P5_Dealer

      Date Announced:
      DEC 21, 2024
      NHTSA ID:
      #10248821

      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 #23TJ01P5_RL_Publ

      Date Announced:
      DEC 21, 2024
      NHTSA ID:
      #10248822

      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 #23TJ01P5_TI_Publ

      Date Announced:
      DEC 21, 2024
      NHTSA ID:
      #10248823

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

    • 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 #Dealer Packet

      Date Announced:
      JAN 31, 2024
      NHTSA ID:
      #10251080

      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 #Current Phase Ti

      Date Announced:
      JAN 31, 2024
      NHTSA ID:
      #10251081

      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 #Dealer Letter

      Date Announced:
      JAN 03, 2024
      NHTSA ID:
      #10251065

      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 #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 »

    • TSB #23TJ01_P3_Dealer

      Date Announced:
      OCT 12, 2023
      NHTSA ID:
      #10245458

      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 #23TJ01P3_TI_fina

      Date Announced:
      OCT 12, 2023
      NHTSA ID:
      #10245459

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

    • TSB #23TJ01P3_RL_fina

      Date Announced:
      OCT 11, 2023
      NHTSA ID:
      #10245455

      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 »

    ELECTRICAL SYSTEM:INSTRUMENT PANEL:FUEL GAUGE

    • TSB #TSB001823

      Date Announced:
      FEB 15, 2024
      NHTSA ID:
      #10252252

      TSB: Some 2021 ? 2023 model year Sienna Hybrid vehicles may exhibit a MIL ON condition with Diagnostic Trouble Code (DTC) P060694 (Hybrid/EV Powertrain Control Module Processor Unexpected Operation) present. Read More »

    ELECTRICAL SYSTEM:PROPULSION SYSTEM:HYBRID MANAGEMENT

    • TSB #T-SB-0018-23

      Date Announced:
      APR 19, 2023
      NHTSA ID:
      #10236206

      TSB: Some 2021 ? 2023 model year Sienna Hybrid vehicles may exhibit a MIL ON condition with Diagnostic Trouble Code (DTC) P060694 (Hybrid/EV Powertrain Control Module Processor Unexpected Operation) present. Read More »

    ELECTRICAL SYSTEM:PROPULSION SYSTEM:HYBRID MANAGEMENT:POWER CONTROL UNIT/MODULE (HPCU)

    • TSB #TSB001823

      Date Announced:
      FEB 15, 2024
      NHTSA ID:
      #10252252

      TSB: Some 2021 ? 2023 model year Sienna Hybrid vehicles may exhibit a MIL ON condition with Diagnostic Trouble Code (DTC) P060694 (Hybrid/EV Powertrain Control Module Processor Unexpected Operation) present. 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 #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 »

    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 »

    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 »

    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 »

    BACK OVER PREVENTION

    • TSB #T-TT-0726-23

      Date Announced:
      JUL 10, 2023
      NHTSA ID:
      #10241394

      TT: Some 2021 - 2023 Highlander HV, RAV4 HV and Sienna HV vehicles equipped with Rear Motor Generator, MGR (Q610), may duplicate an abnormal noise (Drone, Growl, Humming, and/or other) from the MGR at various vehicle speeds and normal ... Read More »

    • TSB #T-TT-0725-23

      Date Announced:
      MAR 23, 2023
      NHTSA ID:
      #10234336

      TT: Some 2021- 2023 Sienna HV vehicles may duplicate an abnormal noise (Growl, Humming and/or other) from the Hybrid T/A at various vehicle speeds and normal drive conditions. Read More »

    • TSB #T-TT-0726-23

      Date Announced:
      MAR 23, 2023
      NHTSA ID:
      #10234337

      TT: Some 2021 - 2023 Highlander HV, RAV4 HV and Sienna HV vehicles equipped with Rear Motor Generator, MGR (Q610), may duplicate an abnormal noise (Drone, Growl, Humming, and/or other) from the MGR at various vehicle speeds and normal ... 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 »

    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 »

    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 »

    UNKNOWN OR OTHER

    • TSB #LSB006523

      Date Announced:
      DEC 19, 2024
      NHTSA ID:
      #10249327

      TT: Engine Oil Leak between the Lower Oil Pan and Crank Case 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 »

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