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Service bulletins for the 2008 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.

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

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Bulletins, newest first
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-0268-13 REV2017-04-07. Service bulletin. EQUIPMENT. "TT: SOME CUSTOMERS MAY ENCOUNTER BLUETOOTH CONNECTIVITY CONCERNS SUCH AS: • DIFFICULTY PAIRING THE PHONE. • INTERMITTENT BLUETOOTH FAILURE TO CONNECT WHEN FIRST TURNING ON THE VEHICLE. • VARIOUS BLUETOOTH AUDIO FUNCTIONS ARE NO LONGER FUNCTIONING WITH THE CUSTOMER’S PHONE, SUCH AS THE ABILITY TO CHANGE THE TRACK USING THE STEERING WHEEL CONTROLS. THESE CONCERNS CAN BE CAUSED BY CHANGES MADE ON THE CUSTOMER’S PHONE. MAKE SURE TO INQUIRE WITH THE CUSTOMER IF THE CONNECTIVITY CONCERNS OCCURRED AFTER RECEIVING AN OPERATING SYSTEM UPDATE ON THEIR PHONE OR IF THEY HAVE RESTORED THEIR PHONE DATA/SETTINGS RECENTLY."
GR1_DEALER LETTE2017-03-31. Service bulletin. POWER TRAIN; SEAT BELTS. "DEALER LETTER: SAFETY RECALL COMPLETION IS IMPORTANT NOT ONLY IN SATISFYING GOVERNMENT REQUIREMENTS, BUT ALSO IS AN INTEGRAL PART OF OUR COMMITMENT TO MEET CUSTOMER EXPECTATIONS OF TOYOTA PRODUCTS. TOYOTA WILL BE SENDING SAFETY RECALL FOLLOW-UP NOTICES TO REMIND OWNERS WHOSE VEHICLES HAVE NOT YET HAD CAMPAIGN REPAIRS COMPLETED. WE REQUEST YOUR ASSISTANCE IN COMPLETING THE APPLICABLE CAMPAIGN REPAIRS AS OWNERS RECEIVE THE FOLLOW-UP NOTICE AND CONTACT YOUR DEALERSHIP. PLEASE NOTE THE FOLLOW-UP ACTIVITY MAY CAUSE AN INCREASE IN YOUR CURRENT CAMPAIGN OWNER APPOINTMENTS. TOYOTA WILL CONTINUE WITH ADDITIONAL FOLLOW-UP ACTIVITIES IN THE MONTHS TO COME. PLEASE TAKE THIS INTO CONSIDERATION WHEN ANALYZING YOUR MANPOWER REQUIREMENTS."
GR1_REGION LETTE2017-03-31. Service bulletin. POWER TRAIN; SEAT BELTS. REGION LETTER: TOYOTA WILL BE SENDING SAFETY RECALL FOLLOW-UP NOTICES TO REMIND OWNERS WHOSE VEHICLES HAVE NOT YET HAD CAMPAIGN REPAIRS COMPLETED. PLEASE NOTE THE FOLLOWING INFORMATION FOR REGIONAL AND PD ASSOCIATES.
WPB (POL 14-11)_2017-03-31. Service bulletin. STRUCTURE; EQUIPMENT. "WPB: TOYOTA HAS RECEIVED REPORTS WHERE SOME VEHICLES MAY EXHIBIT CRACKED AND/OR STICKY/MELTING DASHBOARDS AS A RESULT OF HEAT OR HUMIDITY. IN MID-DECEMBER, 2014 TOYOTA ANNOUNCED THE REIMBURSEMENT PHASE OF THIS WARRANTY ENHANCEMENT PROGRAM. SINCE PRIOR TO THAT ANNOUNCEMENT, TOYOTA HAS BEEN DILIGENTLY MAKING PARTS PREPARATIONS FOR THE PARTS REPLACEMENT PHASE OF THIS PROGRAM. DUE TO THE AGE, VOLUME, AND BREADTH OF THE COVERED VEHICLES SUBJECT TO THE PROGRAM AND THE SIZE AND COMPLEXITY OF DASHBOARD MANUFACTURING, TOYOTA WILL BE LAUNCHING THE PART REPLACEMENT PORTION OF THIS PROGRAM IN SEVERAL PHASES; PLEASE REFER TO THE TABLE BELOW FOR PART REPLACEMENT MODEL PHASING. ALTHOUGH TOYOTA IS INCREASING PRODUCTION LEVELS, IT IS DIFFICULT TO PREDICT CUSTOMER DEMAND AND WHERE PARTS NEED TO BE SHIPPED TO SUPPORT CUSTOMER DEMAND. IT IS IMPORTANT THAT DEALERSHIPS EXPLAIN TO CUSTOMERS THAT THERE STILL MAY BE A PERIOD OF TIME THE CUSTOMER WILL NEED TO WAIT BEFORE PART REPLACEMENT CAN BE PERFORMED. PLEASE BE SURE TO TAKE THIS INTO CONSIDERATION WHEN PERFORMING CUSTOMER SCHEDULING."
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-TT-0360-152017-03-28. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; EQUIPMENT. TT: CUSTOMERS MAY EXPERIENCE CONNECTIVITY ISSUES WHEN THE FOLLOWING CONDITIONS ARE MET: THE CUSTOMER'S IPHONE IS OPERATING ON IOS9 FIRMWARE. THE CUSTOMER'S IPHONE IS CONNECTED TO THE VEHICLE VIA BLUETOOTH. THE CUSTOMER MAY COMPLAIN OF THE FOLLOWING ISSUES: WHEN RECEIVING TWO INCOMING CALLS SIMULTANEOUSLY, BOTH CALLS ARE ENDED AUTOMATICALLY. ITUNES RADIO APP DOES NOT PLAY VIA BLUETOOTH AUDIO. PODCAST AND AUDIOBOOK MEDIA PLAYBACK IS INOPERATIVE VIA BLUETOOTH AUDIO.
T-TT-0381-162017-03-21. Service bulletin. EQUIPMENT. TECH TIP: SOME CUSTOMERS MAY EXPERIENCE DIFFICULTY PROGRAMMING HOMELINK.
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."
POL14-112017-03-03. Service bulletin. EQUIPMENT. "WPB: TOYOTA HAS RECEIVED REPORTS WHERE SOME VEHICLES MAY EXHIBIT CRACKED AND/OR STICKY/MELTING DASHBOARDS AS A RESULT OF HEAT OR HUMIDITY. IN MID-DECEMBER, 2014, TOYOTA ANNOUNCED THE REIMBURSEMENT PHASE OF THIS WARRANTY ENHANCEMENT PROGRAM. SINCE PRIOR TO THAT ANNOUNCEMENT, TOYOTA HAS BEEN DILIGENTLY MAKING PARTS PREPARATIONS FOR THE PARTS REPLACEMENT PHASE OF THIS PROGRAM. DUE TO THE AGE, VOLUME, AND BREADTH OF THE COVERED VEHICLES SUBJECT TO THE PROGRAM AND THE SIZE AND COMPLEXITY OF DASHBOARD MANUFACTURING, TOYOTA HAS LAUNCHED THE PART REPLACEMENT PORTION OF THIS PROGRAM IN SEVERAL PHASES; PLEASE REFER TO THE TABLE BELOW FOR PART REPLACEMENT MODEL PHASING."
ZE6_DEALERD 12/32017-03-03. Service bulletin. EQUIPMENT. DD: IN MID-DECEMBER 2014, TOYOTA ANNOUNCED THE REIMBURSEMENT PHASE OF THIS PROGRAM. SINCE PRIOR TO THAT ANNOUNCEMENT, TOYOTA HAS BEEN DILIGENTLY MAKING PARTS PREPARATIONS FOR THE PARTS REPLACEMENT PHASE OF THIS PROGRAM. DUE TO THE AGE, VOLUME, AND BREADTH OF THE COVERED VEHICLES SUBJECT TO THE PROGRAM AND THE SIZE AND COMPLEXITY OF DASHBOARD MANUFACTURING, TOYOTA HAS LAUNCHED THE PART REPLACEMENT PORTION OF THIS PROGRAM IN SEVERAL PHASES; PLEASE REFER TO THE TABLE BELOW FOR PART REPLACEMENT MODEL PHASING.
ZE6_DEALER 12/32017-03-03. Service bulletin. EQUIPMENT. DL: IN OUR CONTINUING EFFORTS TO ENSURE THE BEST IN CUSTOMER SATISFACTION, TOYOTA HAS ANNOUNCED A WARRANTY ENHANCEMENT PROGRAM (THE “PROGRAM”). THIS PROGRAM EXTENDS THE WARRANTY COVERAGE FOR REPAIRS RELATED TO CRACKED AND/OR STICKY/MELTING DASHBOARDS (INSTRUMENT PANELS) AS A RESULT OF HEAT OR HUMIDITY ON 2003-2005 MODEL YEAR 4RUNNER, 2005-2010 MODEL YEAR AVALON, 2007-2011 MODEL YEAR CAMRY AND CAMRY HYBRID, 2004-2010 MODEL YEAR SIENNA, AND 2004-2008 MODEL YEAR SOLARA VEHICLES.
T-TT-0268-132016-04-12. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
TC13-0192016-04-12. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
T-TT-0223-132016-04-12. Service bulletin. STEERING. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
T-TT-0124-112016-04-12. Service bulletin. TIRES. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
T-TT-0051-102016-04-12. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
T-SB-0187-122016-04-12. Service bulletin. TIRES. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
T-SB-0097-122016-03-31. Service bulletin. STEERING:LINKAGES. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
T-SB-0030-142016-03-31. Service bulletin. STEERING:LINKAGES. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
POL-14-112015-10-31. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. TOYOTA: DURING THE HUMIDITY OR HEAT, THE DASHBOARD WOULD BE EITHER STICKY, MELTING, OR CRACKED AND A PART REPLACEMENT HAS PHASED INTO PROGRAM. MODELS 2003-05 4RUNNER, 2005-10 AVALON, 2007-11 CAMRY & HYBRID, 2004-10 SIENNA, 2004-08 SOLARA. *PE
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
TC-14-0012014-04-25. Service bulletin. AIR BAGS; ELECTRICAL SYSTEM. TOYOTA: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. THERE IS AN EXCESSIVE ELECTRICAL RESISTANCE, ON SOME VEHICLES, WHERE THE CONNECTOR HAD BEEN IMPROPERLY CRIMPED, DURING TIME OF MANUFACTURING, AND OXIDIZATION BUILDUP, IN CONNECTOR, RESULT IN AN ILLUMINATION OF AIRBAG WARNING LAMP. SEE TSB-0069-12 REV 2. MODEL 2004-2009 SIENNA. *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

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