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Service bulletins for the 2012 Toyota Sequoia

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.

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

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Bulletins, newest first
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."
T-TT-0374-152017-03-02. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); EQUIPMENT. "TT: SINCE MY 2011, SEVERAL DIFFERENT UPDATE OR UPGRADE USB SST'S HAVE BEEN ISSUED FOR TOYOTA AUDIO AND NAVIGATION SYSTEM. REFER TO THE CHART BELOW FOR A COMPREHENSIVE LIST OF ALL CURRENT AND PREVIOUSLY ISSUED USB SSTS AND THEIR APPLICABILITY. "
T-TT-0385-162017-03-01. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. "TECH TIP: THIS TECH TIP IS BEING PROVIDED TO BRING ATTENTION TO THE NEW LOCATION OF THE ENTUNE/NAV/MAP UPDATE AND UPGRADE USB DIRECTORY. CLICK ON THE TIS TAB, DIAGNOSTICS TAB, TELEMATICS TAB, AND THE DOCUMENT IS NOW LOCATED UNDER THE REFERENCE DOCUMENTS SECTIONS. THIS CHANGE HAS OCCURRED TO HELP SPEED UP THE UPDATING PROCESS OF THIS DOCUMENT. "
T-TT-0199-122016-07-07. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). Some users may experience no sound from the Pandora or iHeartRadio Entune Applications after attaching the iPhone USB cable to the multimedia system. This can also occur if the user chooses the iPod selection on the multimedia system and then attempts to return to Pandora or iHeartRadio Entune Applications. This condition occurs with iPhones running iOS 6.0 and later
T-SB-0058-132016-07-07. Service bulletin. ENGINE. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
SB-TSB-0024-132016-06-17. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ENGINE. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
T-TT-0278-132016-04-12. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). SUMMARY TO BE PROVIDED ON A FUTURE DATE.
T-TT-0268-132016-04-12. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
T-TT-0262-132016-04-12. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
T-TT-0260-132016-04-12. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). SUMMARY TO BE PROVIDED ON A FUTURE DATE.
T-TT-0257-132016-04-12. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). SUMMARY TO BE PROVIDED ON A FUTURE DATE.
T-TT-0256-13A2016-04-12. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). SUMMARY TO BE PROVIDED ON A FUTURE DATE.
T-TT-0250-132016-04-12. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
T-TT-0250-132016-04-12. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
T-TT-0246-132016-04-12. Service bulletin. STRUCTURE:EMERGENCY:ESCAPE/EGRESS/EXIT. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
T-TT-0239-132016-04-12. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
T-TT-0234-132016-04-12. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). SUMMARY TO BE PROVIDED ON A FUTURE DATE.
T-TT-0226-132016-04-12. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). SUMMARY TO BE PROVIDED ON A FUTURE DATE.
T-TT-0205-122016-04-12. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
T-TT-0204-122016-04-12. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
T-TT-0203-122016-04-12. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
T-TT-0199-122016-04-12. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). 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.

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