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Service bulletins for the 2010 Toyota Sienna

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.

275 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
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."
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
TCS-11-0272012-01-26. Service bulletin. UNKNOWN OR OTHER; ENGINE AND ENGINE COOLING:ENGINE. TOYOTA: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. ON SOME VEHICLES, DUE TO MOISTURE/WATER IN AIR INJECTION PUMPS AND/OR AIR SWITCHING VALVES IN ENGINES, THE CHECK ENGINE LIGHT (MALFUNCTION INDICATOR LIGHT) WOULD ILLUMINATE. *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
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
TC-10-0322010-10-13. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS. TOYOTA SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER 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. CSC LETTER WAS REC'D. *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-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

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