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Service bulletins for the 2008 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.

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

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Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
TSB-0012-13 Rev22018-04-23. Service bulletin. ENGINE; ELECTRICAL SYSTEM:SOFTWARE. TSB: Flash reprogramming allows the ECU software to be updated without replacing the ECU. Flash calibration updates for specific vehicle models/ECUs are released as field-fix procedures described in individual Service Bulletins. This bulletin details the Techstream ECU flash reprogramming process and outlines use of the Technical Information System (TIS) and the Calibration Update Wizard (CUW). Flash calibration updates can only be applied to the vehicle/ECU combination for which they are intended. ECUs have internal security that will not allow them to be programmed with another ECU?s information.
T-TT-0010-10 Rev2018-04-02. Service bulletin. BACK OVER PREVENTION; ENGINE. Tech Tip: Low battery voltage can contribute to a MIL "ON" condition for P0335 (Crankshaft Position Sensor Circuit) and/or P0340 (Camshaft Position Sensor Circuit) due to inconsistent rotational speed of the engine's crankshaft.
ZE2_WEP_Dealer L2018-04-02. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Letter: In our continuing efforts to ensure the best in customer satisfaction, Toyota is announcing a Warranty Enhancement Program to extend the warranty coverage for repairs related a leaking or seeping Engine Oil Cooler Pipe. In these vehicles, Toyota has received some reports where vehicles can experience an oil leak or seep from the Engine Oil Cooler Pipe. Although the Engine Oil Cooler Pipe is covered by Toyota?s New Vehicle Limited Warranty for 3 years or 36,000 miles (whichever occurs first), we at Toyota care about the customers? ownership experience. Toyota is now extending the warranty coverage for repairs related a leaking or seeping Engine Oil Cooler Pipe. The following information is provided to inform you and your staff of the program notification schedule and your degree of involvement.
ZE2_WEP_Region L2018-04-02. Service bulletin. ENGINE AND ENGINE COOLING. Region Letter: In our continuing efforts to ensure the best in customer satisfaction, Toyota is announcing a Warranty Enhancement Program to extend the warranty coverage for repairs related a leaking or seeping Engine Oil Cooler Pipe. In these vehicles, Toyota has received some reports where vehicles can experience an oil leak or seep from the Engine Oil Cooler Pipe. Although the Engine Oil Cooler Pipe is covered by Toyota?s New Vehicle Limited Warranty for 3 years or 36,000 miles (whichever occurs first), we at Toyota care about the customers? ownership experience. Toyota is now extending the warranty coverage for repairs related a leaking or seeping Engine Oil Cooler Pipe. The following information is provided to inform you and your staff of the program notification schedule and your degree of involvement.
T-TT-0324-152018-04-02. Service bulletin. ENGINE. TechTip: Condition: Engine No Start and/or Poor Engine Power DTCs set immediately after performing service on the Inverter such as SSC D0M for IPM replacement or Inverter Assembly Installation.
T-TT-0086-112018-04-02. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ENGINE. TechTip: Condition - The vehicle may be difficult to start or have an abnormally low or rough idle after the battery has been disconnected or power to the Engine ECM has been interrupted.
T-TT-0160-122018-04-02. Service bulletin. ENGINE. Engine No Start and/or Poor Engine Power DTCs set immediately after performing service on the Inverter such as SSC D0M for IPM replacement or Inverter Assembly installation.
T-SB-0033-142018-04-02. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS. Some vehicles in particular geographic areas may exhibit a condition where the HVAC Evaporator Drain Hose has become obstructed with an insect nest. An insect repellent drain hose tip (ARINIX® Tip) is now available to help minimize future occurrences of this environmental condition. For some models, a new drain hose is required to properly fit the ARINIX® Tip. Follow the procedures in this bulletin for proper handling and installation of this optional service part.
90K_LSC_Extensio2017-08-01. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Letter: On certain vehicles equipped with a 2GR-FE (V6) engine, the rubber portion of the oil supply hose for the VVT-i actuator may degrade over time. This condition may cause oil to leak from the VVT-i oil hose producing abnormal engine noise and the oil pressure light to illuminate. The following vital information is provided to inform you and your staff of the owner notification timing and your degree of involvement.
90K_LSC_Extensio2017-08-01. Service bulletin. ENGINE AND ENGINE COOLING. Region Letter: On certain vehicles equipped with a 2GR-FE (V6) engine, the rubber portion of the oil supply hose for the VVT-i actuator may degrade over time. This condition may cause oil to leak from the VVT-i oil hose producing abnormal engine noise and the oil pressure light to illuminate.
T-SB-0201-112017-08-01. Service bulletin. ENGINE AND ENGINE COOLING. TSB: Some vehicles equipped with 2GR-FE/FXE engines and a towing package may exhibit a leak or oil seep from the engine's oil cooler pipes.
T-TT-0362-152017-03-28. Service bulletin. ELECTRICAL SYSTEM; ENGINE. TT: THE VEHICLE MAY BE DIFFICULT TO START OR HAVE AN ABNORMALLY LOW OR ROUGH IDLE AFTER THE BATTERY HAS BEEN DISCONNECTED OR POWER TO THE ENGINE ECM HAS BEEN INTERRUPTED.
T-SB-0012-13 REV2017-03-21. Service bulletin. ENGINE; ELECTRICAL SYSTEM. "TSB: FLASH REPROGRAMMING ALLOWS THE ECU SOFTWARE TO BE UPDATED WITHOUT REPLACING THE ECU. FLASH CALIBRATION UPDATES FOR SPECIFIC VEHICLE MODELS/ECUS ARE RELEASED AS FIELD-FIX PROCEDURES DESCRIBED IN INDIVIDUAL SERVICE BULLETINS. THIS BULLETIN DETAILS THE TECHSTREAM ECU FLASH REPROGRAMMING PROCESS AND OUTLINES USE OF THE TECHNICAL INFORMATION SYSTEM (TIS) AND THE CALIBRATION UPDATE WIZARD (CUW). FLASH CALIBRATION UPDATES CAN ONLY BE APPLIED TO THE VEHICLE/ECU COMBINATION FOR WHICH THEY ARE INTENDED. ECUS HAVE INTERNAL SECURITY THAT WILL NOT ALLOW THEM TO BE PROGRAMMED WITH ANOTHER ECU’S INFORMATION."
T-TT-0160-122016-03-31. Service bulletin. ENGINE. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
TC-14-0362015-02-25. Service bulletin. ENGINE. TOYOTA: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. ON CERTAIN VEHICLES THE RUBBER OIL SUPPLY HOSE, FOR VVT-I ACTUATOR, IS DEGRADING OVER TIME AND CAUSING A LEAKAGE OF OIL, FROM OIL HOSE, PRODUCING AN ILLUMINATION OF OIL PRESSURE LIGHT AND AN ABNORMAL ENGINE NOISE. MODEL 2005-09 AVALON, 2008 HIGHLANDER, 2006-09 RAV4, 2007-10 CAMRY, 2007-10 SIENNA. *PE
TC-14-0342014-12-16. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. TOYOTA: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. AN ENHANCEMENT WARRANTY PROGRAM, ON CERTAIN VEHICLES, HAS BEEN ANNOUNCED TO PROVIDE WARRANTY COVERAGE FOR REPAIRS RELATING TO LEAKAGE OR SEEPAGE ENGINE OIL COOLER PIPE. MODEL 2007-11 SIENNA, 2008-11 HIGHLANDER, 2009-11 VENZA, 2011 HIGHLANDER HYBRID. *PE
TSB-0001-102014-03-07. Service bulletin. ENGINE. TOYOTA: UPDATED INFORMATION REGARDING THE RESPONSE OF THE AIR FUEL RATIO SENSOR, THAT IS INCORRECT AND ALSO, AN INCORRECT OXYGEN SENSOR OPERATION MAY BE PRESENT, DUE TO ECM/PCM PROCESSOR P0606 DTC. *PE
TSB-020-112012-01-24. Service bulletin. ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:ENGINE. TOYOTA: ON SOME VEHICLES, THE ENGINE OIL COOLER PIPES MAY EXHIBIT AN OIL SEEPAGE. INFORMATION HAS BEEN PROVIDED REGARDING THIS ISSUE. *PE
TC-10-0172011-04-25. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS. TOYOTA SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. LIMITED SERVICE CAMPAIGN (LSC) 90K-PHASE 4. REPLACE THE VVT-I OIL HOSE IN CERTAIN 2008 MODEL HIGHLANDER VEHICLES EQUIPPED WITH A 2GR-FE (V6) ENGINE. THE RUBBER PORTION OF OIL SUPPLY HOSE FOR THE VVT-I ACTUATOR MAY DEGRADE OVER TIME. *PE
TSB-0064-102010-11-01. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. TOYOTA: TECHSTREAM ECU FLASH REPROGRAMMING PROCEDURE. FLASH REPROGRAMMING ALLOWS THE ECU SOFTWARE TO BE UPDATED WITHOUT REPLACING THE ECU. FLASH CALIBRATION UPDATES FOR SPECIFIC VEHICLE MODELS/ECUS ARE RELEASED AS FIELD-FIX PROCEDURES DESCRIBED IN INDIVIDUAL SERVICE BULLETINS. MODEL YEARS FROM 2001-2011. *PE
TSB-0047-102010-08-23. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). TOYOTA SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. VEHICLES EQUIPPED WITH A 2GR-FE (V6) ENGINE, THE RUBBER PORTION OF THE OIL SUPPLY HOSE FOR VVT-I ACTUATOR MAY DEGRADE OVER TIME. THIS CONDITION MAY CAUSE OIL TO LEAK FROM THE VVT-I OIL HOSE PRODUCING ABNORMAL ENGINE NOISE AND THE OIL PRESSURE LIGHT TO ILLUMINATE. *PE
TSB-0094-092010-05-06. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. TOYOTA: SOME VEHICLES WITH 2GR FE ENGINES MAY EXHIBIT A TICKING/CLICKING TYPE NOISE FROM THE CYLINDER HEAD COVER AREA WHICH MAY BE ACCOMPANIED BY A MIL ON AND ONE OR MORE VVT-I RELATED DIAGNOSTIC TROUBLE CODES (DTCS). *PE
TSB-0184-092010-05-06. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). TOYOTA: VEHICLES WITH 2GR FE ENGINES MAY EXHIBIT A MIL ON CONDITION WITH DIAGNOSTIC TROUBLE CODE (DTC) P0505 STORED IN THE ENGINE CONTROL MODULE OR ECM (SAE TERM: POWERTRAIN CONTROL MODULE/PCM). *PE
037072007-09-26. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ISC LEARNING PROCEDURE. WHEN THE BATTERY IS DISCONNECTED OR LOWER THAN 7 VOLTS, IT IS NECESSARY TO PERFORM THE ISC LEARNING PROCEDURE TO GET IT BACK TO IDLE SPEED CONTROL. *KB

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