Service bulletins for the 2020 Toyota Highlander
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
236 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
| TTT069822 | 2022-10-17. Service bulletin. ELECTRICAL SYSTEM. TT: Some 17-22MY Highlander and 17-20MY Sienna vehicles may experience a MIL ON condition with DTC(s) P042000, and/or P043000. This issue could involve deteriorated catalyst material from the bank 1 or bank 2 catalytic converter. |
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| TSB005522 | 2022-10-17. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. TSB: Some 2020 ? 2022 Highlander and Highlander Hybrid, and 2021 ? 2022 model year Venza Hybrid vehicles equipped with the 12.3-in. Premium Audio system may exhibit an abnormal multi-display operation, including but not limited to: an intermittent blank screen (reverse camera still operable), rebooting (Toyota logo present, audio still playing), touch screen inputs intermittently inoperative, or intermittent screen freezing. An updated integration control module is available to address these conditions. Follow the Repair Procedure in this bulletin to address this condition |
| TSB001221Rev2 | 2022-10-17. Service bulletin. STRUCTURE. TSB: Some 2010 ? 2022 model year Toyota vehicles may exhibit paint stains after the removal of Rapgard?. The paint stains may appear to be under the clear coat but are usually under wrinkles in the Rapgard?. The wrinkles may trap water and cause the paint to stain from the trapped moisture, especially on horizontal surfaces such as the hood, roof, and trunk. Follow the Repair Procedure in this bulletin to address this condition |
| T-TT-0694-22 Rev | 2022-09-15. Service bulletin. ENGINE AND ENGINE COOLING. 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 (Fig 1). In several cases, it was found that the cause of the ECU damage was improper jump starting. Further investigation found that ECU damage may occur if the jumper cables are hooked up on or around the engine ECU or ECU mounting bracket |
| T-TT-0703-22 | 2022-09-15. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. TT: Vehicles listed above equipped with a Denso Ten radio (Entune Audio Plus or Premium Audio) may exhibit a condition in which the radio screen continues to show a Bluetooth phone call in progress after the call has ended. This condition has been confirmed with multiple Android phones, including Samsung Galaxy S21 and S22, and Google Pixel 6. |
| T-SB-0055-22 Rev | 2022-09-15. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. TSB: Some 2020 ? 2022 Highlander and Highlander Hybrid, and 2021 ? 2022 model year Venza Hybrid vehicles equipped with the 12.3-in. Premium Audio system may exhibit an abnormal multi-display operation, including but not limited to: an intermittent blank screen (reverse camera still operable), rebooting (Toyota logo present, audio still playing), touch screen inputs intermittently inoperative, or intermittent screen freezing. An updated integration control module is available to address these conditions. Follow the Repair Procedure in this bulletin to address this condition. |
| TTT069822 | 2022-09-15. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR. TT: Some 17-22MY Highlander and 17-20MY Sienna vehicles may experience a MIL ON condition with DTC(s) P042000, and/or P043000. This issue could involve deteriorated catalyst material from the bank 1 or bank 2 catalytic converter. |
| TSB005522 | 2022-09-15. Service bulletin. EQUIPMENT:ELECTRICAL; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. TSB: Some 2020 ? 2022 Highlander and Highlander Hybrid, and 2021 ? 2022 model year Venza Hybrid vehicles equipped with the 12.3-in. Premium Audio system may exhibit an abnormal multi-display operation, including but not limited to: an intermittent blank screen (reverse camera still operable), rebooting (Toyota logo present, audio still playing), touch screen inputs intermittently inoperative, or intermittent screen freezing. An updated integration control module is available to address these conditions. Follow the Repair Procedure in this bulletin to address this condition |
| TSB001221Rev2 | 2022-09-15. Service bulletin. STRUCTURE. TSB: Some 2010 ? 2022 model year Toyota vehicles may exhibit paint stains after the removal of Rapgard?. The paint stains may appear to be under the clear coat but are usually under wrinkles in the Rapgard?. The wrinkles may trap water and cause the paint to stain from the trapped moisture, especially on horizontal surfaces such as the hood, roof, and trunk. Follow the Repair Procedure in this bulletin to address this condition |
| TSB009421Rev1 | 2022-09-15. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. TSB: Some 2005 ? 2022 model year Toyota vehicles that have undergone water intrusion may exhibit a condition in which a musty smell is present. Follow the procedures in this bulletin to remediate the odor and address this condition. The purpose of this service bulletin is to provide general guidelines and procedures for odor remediation. This service bulletin provides a guide on how to prepare the interior of the vehicle prior to an odor remediation being performed, as well as contact information for an approved vendor who will arrange the remediation, and instructions on how to prepare the interior of the vehicle for reassembly once the remediation has been completed. Refer to all model and model year specific Repair Manuals and the EPA (Environmental Protection Agency) website for the most up-to-date safety and precautionary guidelines. This service bulletin is to provide a general overview and direction for the odor remediation process |
| TSB004822 | 2022-09-15. Service bulletin. STRUCTURE:BODY:BUMPERS:ACTIVE SHUTTERS/GRILL. TSB: Some 2020 ? 2022 model year Highlander (except XSE models) and Highlander Hybrid vehicles may exhibit an abnormal whistle noise from the front when driving over 35 mph. This may be caused by the radiator grille bracket. A new radiator grille bracket has been developed to address this condition |
| TTT069522 | 2022-09-15. Service bulletin. COMMUNICATION:MANUFACTURER TELEMATICS. TT: To improve customer support of telematics connected services features, additional resources have been provided in the Service Lane - Knowledge Center. |
| T-TT-0702-22 | 2022-08-15. Service bulletin. ENGINE AND ENGINE COOLING. TT: Some 2020-2022 vehicles equipped with North American Produced (NAP) A25A-FKS/FXS engines may experience an oil leak from the head/valve cover gasket. This issue is currently under investigation. |
| TTT059920 Rev4 | 2022-06-21. Service bulletin. EQUIPMENT. TT: Vehicle control apps might not operate as expected at times due to preconditions (normal operating parameters) not being established, vehicle settings and/or network/cellular coverage concerns |
| TSB002019 | 2022-06-21. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. OBSOLETE NOTICE March 22, 2022: This bulletin is now obsolete. Please see T-SB-0024-22. |
| TSB002422 | 2022-06-21. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. TSB: Some 2018 model year Camry and Camry Hybrid, 2019 model year Avalon and Avalon Hybrid, 2020 ? 2021 model year Highlander, Highlander Hybrid, and Corolla, and 2021 model year Sienna Hybrid vehicles may exhibit decreased front windshield defroster performance at extremely low ambient temperatures. This condition may be the result of the fresh/recirculation servo actuator separating from the servo. This condition does not affect the airflow of the defroster. Follow the Repair Procedure in this bulletin to address this condition. |
| TTT068522 | 2022-06-21. Service bulletin. ENGINE AND ENGINE COOLING. TT: Some 17-22MY Highlander, and 17-20MY Sienna vehicles with engine serial numbers that start with F or G may experience an engine oil leak condition from the No.2 Oil pan. This issue is currently under investigation. Please take detailed pictures of the oil pan leak condition before repair. If condition is on applicable vehicles with engine serial numbers that do not start with F or G, disregard, and proceed with normal repair. |
| TTT063620 | 2022-06-21. Service bulletin. BACK OVER PREVENTION; SERVICE BRAKES, HYDRAULIC. TT: Some Toyota vehicles installed with Toyota Complete Maintenance Care (TCMC) brake pads may exhibit a groan or squeak noise in various driving conditions |
| T-SB-0110-20 Rev | 2022-06-13. Service bulletin. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY; EQUIPMENT. TSB: This bulletin includes basic procedures for performing a rescue charge at battery on high voltage (HV) Ni-MH and Li-ion batteries. This bulletin should be used in conjunction with the applicable model and model year Repair Manual while performing the battery rescue charge. The GRX-5100 should be used wherever the Repair Manual references the Toyota Hybrid System (THS) charger |
| T-TT-0611-20 Rev | 2022-06-13. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. TT: To assist with the early detection and early resolution of audio related concerns, it may be requested as part of the remanufactured head unit return to recover MMR data from the head unit. The following steps are instructions on how to retrieve the data from the system and are only to be used when requested by audio suppliers, FTS, and/or FPEs |
| T-SB-0015-21 Rev | 2022-06-13. Service bulletin. ENGINE AND ENGINE COOLING. TSB: This Service Bulletin provides a procedure to properly perform the Techstream ?Control the Injection Mode? active test in some 2016 ? 2022 model year Toyota vehicles equipped with an FKS engine |
| T-TT-0694-22 | 2022-05-16. Service bulletin. ELECTRICAL SYSTEM. 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 (Fig 1). In several cases, it was found that the cause of the ECU damage was improper jump starting. Further investigation found that ECU damage may occur if the jumper cables are hooked up on or around the engine ECU or ECU mounting bracket |
| T-TT-0687-22 | 2022-04-18. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. TT: When customers have a concern about a discharged battery, no start, or general battery concern, the DCA-8000 is the only appropriate tool to use for diagnosis |
| T-TT-0686-22 | 2022-04-18. Service bulletin. ENGINE AND ENGINE COOLING. TT: The purpose of this Tech Tip is to provide diagnostic tips to prevent misdiagnosis of the following DTC?s and prevent repeat repairs. One or more of the Heated Oxygen Sensors (O2) or Air Fuel ratio sensor (A/F) DTCs below could set due to a leaking exhaust system. If you encounter a vehicle with any of these DTCs |
| T-TT-0685-22 | 2022-04-18. Service bulletin. ENGINE. TT: Some 2017-2022 Highlander, and 2017-2020 Sienna vehicles may experience an engine oil leak condition from the No.2 Oil pan. This issue is currently under investigation. Please take detailed pictures of the oil pan leak condition before repair |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.