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Service bulletins for the 2022 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.

198 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
T-SB-0110-20 Rev22026-09-09. Service bulletin. ENGINE. OBSOLETE NOTICE August 20, 2026: This bulletin is now obsolete. Please see T-SB-0051-26.
T-SB-0104-21 Rev22026-03-07. Service bulletin. ENGINE. OBSOLETE NOTICE February 27, 2026: This bulletin is no longer applicable and is now obsolete.
T-TT-0771-252025-02-12. Service bulletin. ENGINE. Some 2021-2025 MY Highlander HV, Sienna HV, RAV4, and RAV4 HV, may exhibit an oil leak from the area where the camshaft cover, camshaft housing, and the timing chain covers meet. This is typically seen on the exhaust side of the engine.
T-SB-0110-20 Rev22025-01-09. Service bulletin. ENGINE. 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-SB-0103-20 Rev12024-07-23. Service bulletin. ENGINE. This Service Bulletin provides updated non-electric water pump leak inspection and diagnostic tips for some 2008 – 2025 model year Toyota vehicles.
T-TT-0694-22 Rev22024-07-23. Service bulletin. ENGINE. 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. 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 negative (ground) cable clamps are attached on or around the engine ECU or ECU mounting bracket.
T-SB-0103-20 Rev12024-07-23. Service bulletin. ENGINE. This Service Bulletin provides updated non-electric water pump leak inspection and diagnostic tips for some 2008 – 2025 model year Toyota vehicles.
T-TT-0694-22 Rev22024-07-23. Service bulletin. ENGINE. 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. 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 negative (ground) cable clamps are attached on or around the engine ECU or ECU mounting bracket.
T-PANT-2024-004-2024-04-15. Service bulletin. ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION. 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.
22TE092024-04-01. Service bulletin. ENGINE AND ENGINE COOLING; HYBRID PROPULSION SYSTEM. DP: Although the HV Floor Under Wire Harness and Rear Traction Motor Cable is covered by Toyota?s New Vehicle Limited Warranty for 3 years or 36,000 miles (whichever comes first), we at Toyota care about the customers? ownership experience. Toyota is providing coverage for repairs related to excessive corrosion to the wire harness connections at the Rear Motor Generator. Excessive corrosion can cause AM Radio Static during certain drive cycles, or the vehicle may not start.
TSB0104212024-04-01. Service bulletin. SERVICE BRAKES, HYDRAULIC; ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:COOLING SYSTEM; LANE DEPARTURE. 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. ?An ?Oil Pressure Low? warning message on the Multi-information Display (MID). ?A MIL ON condition with Diagnostic Trouble Codes (DTCs) P05202A (Engine Oil Pressure Sensor/Switch ?A? Signal Stuck in Range) and/or P052477 (Engine Oil Pressure Too Low [Severe]) present. Moisture from blow-by gases condenses and accumulates in the engine oil during short trips in extreme cold weather. When the moisture in the oil freezes, the oil pressure may drop, and the aforementioned warning indicators may display. Follow the procedures in this bulletin to address these conditions.
T-TT-0702-22 Rev2024-03-18. 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.
LSB0065232024-01-29. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV); UNKNOWN OR OTHER. TT: Engine Oil Leak between the Lower Oil Pan and Crank Case
TSB0092232023-12-26. Service bulletin. ENGINE AND ENGINE COOLING. Toyota vehicles equipped with an A25A-FKS or A25A-FXS engine may exhibit reduced engine power and/or a MIL ON condition
TSB0051232023-10-16. Service bulletin. ENGINE; UNKNOWN OR OTHER. OBSOLETE NOTICE August 17, 2023: This bulletin is no longer applicable and is now obsolete
T-TT-0726-232023-08-28. Service bulletin. BACK OVER PREVENTION; ENGINE AND ENGINE COOLING. 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 drive conditions. Please contact TAS for diagnostic instructions to aid in resolution of the condition.
TSB-0033-232023-07-31. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; FUEL SYSTEM, GASOLINE. 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 (DTCs) present: ?P24517F ? Evaporative Emission System Switching Valve Actuator Stuck Off. ?P14502A ? Fuel Tank Pressure Sensor Signal Stuck in Range.
T-TT-0694-222023-06-26. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). 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. 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
22TE09-12023-06-26. Service bulletin. ELECTRICAL SYSTEM:WIRING; ENGINE AND ENGINE COOLING. TI: TECHNICAL INSTRUCTIONS FOR CUSTOMER SUPPORT PROGRAM 22TE09 HV FLOOR UNDER WIRE HARNESS AND REAR TRACTION MOTOR CABLE CORROSION CERTAIN 2020 ?2022 MODEL YEAR HIGHLANDER HYBRID AWD
22TE092023-06-26. Service bulletin. ELECTRICAL SYSTEM:WIRING; ENGINE AND ENGINE COOLING. DP: Although the HV Floor Under Wire Harness and Rear Traction Motor Cable is covered by Toyota?s New Vehicle Limited Warranty for 3 years or 36,000 miles (whichever comes first), we at Toyota care about the customers? ownership experience. Toyota is providing coverage for repairs related to excessive corrosion to the wire harness connections at the Rear Motor Generator. Excessive corrosion can cause AM Radio Static during certain drive cycles, or, following certain warning indicators, the vehicle may not start.
T-TT-0733-232023-05-15. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. 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 Coolant Pump No Signal
TTT0702222023-05-01. 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.
T-TT-0699-22 Rev2023-04-17. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICAL. 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
T-TT-0726-232023-04-17. Service bulletin. ENGINE AND ENGINE COOLING; BACK OVER PREVENTION. 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 drive conditions. Please contact TAS for diagnostic instructions to aid in resolution of the condition.
T-TT-0723-232023-04-17. Service bulletin. ENGINE AND ENGINE COOLING. 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

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.