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Service bulletins for the 2012 Toyota Prius C

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.

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

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Bulletins, newest first
T-TT-0309-142017-08-01. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). Tech Tip: Some customers may experience Bluetooth disconnections or loss of SMS Text Message Functionality on the navigation/audio system with Android phones running OS 4.4 or later. Condition tends to occur to customers who have many previous text messages on their phones.
T-TT-0307-142017-08-01. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). Tech Tip: Customer complains of carious Bluetooth connectivity concerns after upgrading to iOS 8.0 and later. Conditions typically experienced include inability to pair the iPhone to the system, poor sound quality during phone calls placed through the audio/navigation system, and the inability to place a hands free phone call using the audio/navigation system.
T-SB-0006-11 Rev2017-08-01. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN:AUTOMATIC TRANSMISSION:COOLING UNIT AND LINES; POWER TRAIN. TSB: World Standard (WS) Automatic Transmission Fluid (ATF) was introduced to reduce maintenance costs and increase the mileage between scheduled maintenance checks. Here are some important tips when working with ATF-WS in Toyota vehicles requiring it's use.
T-TT-0374-15 REV2017-04-07. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); EQUIPMENT. "TT: SINCE MY 2011, SEVERAL DIFFERENT UPDATE OR UPGRADE USB SSTS HAVE BEEN ISSUED FOR TOYOTA AUDIO AND NAVIGATION SYSTEMS. REFER TO THE CHART BELOW FOR A COMPREHENSIVE LIST OF ALL CURRENT AND PREVIOUSLY ISSUED USB SSTS AND THEIR APPLICABILITY. "
T-TT-0397-162017-04-05. Service bulletin. ELECTRICAL SYSTEM; HYBRID PROPULSION SYSTEM: INVERTER. TT: SOME CUSTOMERS MAY COMPLAIN ABOUT A MIL “ON” WITH A P0A80 DTC. IN THESE CASES, THE HV BATTERY WOULD NEED TO BE REPLACED. ALONG WITH THE HV BATTERY REPLACEMENT, THE COOLING SYSTEM FILTER WILL NEED EITHER CLEANING OR REPLACEMENT. THIS TT PROVIDES INFORMATION ABOUT THE HV BATTERY COOLING SYSTEM FILTER.
T-SB-0044-162017-04-04. Service bulletin. EQUIPMENT. TSB: ON SOME VEHICLES, WHEN RAPGARD™ IS REMOVED, THE PAINT MAY HAVE A STAINED APPEARANCE. THESE STAINS APPEAR TO BE UNDER THE CLEAR COAT (REPAINTING THIS AREA IS NOT NECESSARY). THE STAIN PATTERNS ARE USUALLY UNDER WRINKLES IN THE RAPGARD™. THESE WRINKLES SOMETIMES TRAP WATER AND CAUSE THE PAINT TO STAIN FROM THE TRAPPED MOISTURE, ESPECIALLY ON HORIZONTAL SURFACES, SUCH AS THE HOOD, ROOF, AND TRUNK. STAINS CAN BE REMOVED BY HEATING THE STAINED SURFACE TO REMOVE THE TRAPPED MOISTURE.
T-SB-0051-13 REV2017-03-29. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); EQUIPMENT. TSB: AUGUST 19, 2015: THIS BULLETIN IS NOW OBSOLETE. PLEASE SEE T-SB-0061-15
T-TT-0365-152017-03-28. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. TT: A VEHICLE MAY ARRIVE TO THE DEALER WITH A MIL “ON” CONDITION AND P0A80 STORED IN THE MEMORY. SOME CASES HAVE BEEN IDENTIFIED WITH INTERNAL MODIFICATION DONE TO THE HV BATTERY. MODIFIED OR ALTERED PARTS ARE NOT COVERED UNDER WARRANTY.
T-TT-0234-13 REV2017-03-28. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); EQUIPMENT. TT: SINCE MY 2011, SEVERAL DIFFERENT UPDATE OR UPGRADE USB SSTS HAVE BEEN ISSUED FOR TOYOTA AUDIO AND NAVIGATION SYSTEMS. REFER TO THE CHART BELOW FOR A COMPREHENSIVE LIST OF ALL CURRENT AND PREVIOUSLY ISSUED USB SSTS AND THEIR APPLICABILITY.
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-0344-15 REV2017-03-28. Service bulletin. EQUIPMENT. TT: IPHONE TEXT MESSAGES DO NOT APPEAR ON MULTIMEDIA DIS[PLAY.
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-SB-0005-13 REV2017-03-04. Service bulletin. EQUIPMENT; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). TSB: OBSOLETE NOTICE NOVEMBER 2, 2015: THIS BULLETIN IS NOW OBSOLETE. PLEASE SEE T-SB-0101-15
T-SB-0101-152017-03-03. Service bulletin. EQUIPMENT; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). TSB: TOYOTA MODELS EQUIPPED WITH THE DISPLAY AUDIO NAVIGATION SYSTEM REQUIRE A SPECIAL SERVICE TOOL (SST) USB DRIVE TO UPDATE THE MAP, POINTS OF INTEREST, GRACENOTE, AND SYSTEM SOFTWARE. THE SST IS USED WITH ALL VEHICLES TO DELIVER THE UPDATE, HOWEVER A UNIQUE ACTIVATION CARD NUMBER (ACN) REQUIRED FOR EACH VEHICLE. ACTIVATION NUMBERS ARE PROVIDED IN AN ACTIVATION CARD NUMBER (ACN) PAMPHLET AVAILABLE THROUGH THE NORMAL PARTS ORDERING SYSTEM. USE THE PROCESS DESCRIBED IN THIS BULLETIN.
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-SB-0119-152017-03-02. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM. TSB: THIS BULLETIN INCLUDES BASIC PROCEDURES FOR PERFORMING A RESCUE CHARGE ON NI-MH HIGH VOLTAGE (HV) BATTERIES. THIS BULLETIN SHOULD BE USED IN CONJUNCTION WITH THE REPAIR MANUAL WHILE PERFORMING RESCUE CHARGE. THE GRX-5100 SHOULD BE USED WHEREVER THE REPAIR MANUAL REFERENCES THE TOYOTA HYBRID SYSTEM (THS) CHARGER.
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-0395-162017-02-23. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. TT: HV BATTERIES HAVE LIQUID FILLED CELL MODULES, TO PREVENT LEAKAGE FROM CELLS, IT IS VERY IMPORTANT TO CONFIRM THE PROPER ORIENTATION MARK OF THE DRC.
T-TT-0392-16 REV2017-02-23. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. TT: SOME CUSTOMERS MAY EXPERIENCE BLUETOOTH CONNECTION ISSUES AFTER UPDATING THE ANDROID OPERATING SYSTEM TO 5.X.X (LOLLIPOP) OR LATER.
T-SB-0198-11 REV2017-01-05. Service bulletin. ELECTRICAL SYSTEM; HYBRID PROPULSION SYSTEM. TSB: FOR VEHICLES THAT ARE USED UNDER CERTAIN SEVERE OPERATING CONDITIONS, THE HV BATTERY COOLING FAN MAY EXPERIENCE AN EXCESSIVE BUILDUP OF DUST, LINT, OR OTHER DEBRIS THAT CAN REDUCE THE EFFICIENCY OF THE HV BATTERY COOLING SYSTEM. HV BATTERY COOLING FAN MAINTENANCE AND CLEANING SHOULD BE PERFORMED TO ADDRESS THIS CONDITION.
T-SB-0198-11 REV2016-12-14. Service bulletin. HYBRID PROPULSION SYSTEM; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. TSB: FOR VEHICLES THAT ARE USED UNDER CERTAIN SEVERE OPERATING CONDITIONS, THE HV BATTERY COOLING FAN MAY EXPERIENCE AN EXCESSIVE BUILDUP OF DUST, LINT, OR OTHER DEBRIS THAT CAN REDUCE THE EFFICIENCY OF THE HV BATTERY COOLING SYSTEM. HV BATTERY COOLING FAN MAINTENANCE AND CLEANING SHOULD BE PERFORMED TO ADDRESS THIS CONDITION.
T-SB-0061-15 REV2016-11-16. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); ELECTRICAL SYSTEM. TSB: REVISION NOTICE: INTRODUCTION HAS BEEN UPDATED. ANY PREVIOUS PRINTED VERSIONS OF THIS BULLETIN SHOULD BE DISCARDED. SOME 2012 MODEL YEAR VEHICLES EQUIPPED WITH A DISPLAY AUDIO NAVIGATION SYSTEM AND ENTUNE™ (VERSION LESS THAN 2.1.0) MAY EXHIBIT 1 OR MORE OF THE FOLLOWING CONDITIONS; SOME 2012 – 2013 MODEL YEAR VEHICLES EQUIPPED WITH A DISPLAY AUDIO NAVIGATION SYSTEM (NON-HDD) AND ENTUNE™ (VERSION LESS THAN 2.2.0) MAY EXHIBIT 1 OR MORE OF THE FOLLOWING CONDITIONS; SOME 2012 – 2014 MODEL YEAR VEHICLES EQUIPPED WITH A DISPLAY AUDIO NAVIGATION SYSTEM (NON-HDD) AND ENTUNE™ (VERSION LESS THAN 3.2.0) MAY EXHIBIT 1 OR MORE OF THE FOLLOWING CONDITIONS; SOME 2012 – 2015 MODEL YEAR VEHICLES EQUIPPED WITH A DISPLAY AUDIO NAVIGATION SYSTEM (NON-HDD) AND ENTUNE™ (VERSION LESS THAN 4.1.0) MAY EXHIBIT 1 OR MORE OF THE FOLLOWING CONDITIONS; SOME 2012 – 2015 MODEL YEAR VEHICLES EQUIPPED WITH A DISPLAY AUDIO NAVIGATION SYSTEM (NON-HDD) AND ENTUNE™ (VERSION LESS THAN 5.1.0) MAY EXHIBIT 1 OR MORE OF THE FOLLOWING CONDITIONS.
T-SB-0079-132016-06-22. Service bulletin. VISIBILITY:WINDSHIELD. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
T-SB-0076-13A2016-06-22. Service bulletin. EQUIPMENT. 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.

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