WenmarOpen by Wenmar Pro

Service bulletins for the 2016 Volvo S60

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.

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

By type

By component

By trouble code

By topic

Bulletins, newest first
TJ315352017-08-03. Service bulletin. EQUIPMENT; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; EQUIPMENT:ELECTRICAL. If you need to perform a tuner replacement on any vehicle that is factory equipped with SiriusXM satellite radio, please follow the step by step instructions. Going through this process will ensure your customer continues to receive their satellite radio programming without any interruption of service. For SPA vehicles, the SiriusXM tuner is contained within the Infotainment Head Unit (IHU). For all other vehicles, the tuner is the Remote Digital Audio Receiver (RDAR).
TJ302682017-01-17. Service bulletin. ENGINE. VOLVO CARS SERVICE AND PARTS BUSINESS TECHNICAL JOURNAL TITLE: DRIVE - E THERMOSTAT DTCS STORED IN ENGINE CONTROL MODULE ( ECM ) REF NO: ISSUING DEPARTMENT : CAR MARKET : UNITED STATES AND CANADA TJ 30268 TECHNICAL SERVICE PARTNER: ISSUE DATE : STATUS DATE : 3 US 7510 VOLVO CARS NORTH AMERICA 2015 - 05 - 14 2015 - 11 - 30 FUNC GROUP : FUNC DESC : 2627 THERMOSTAT PAGE 1 OF 2 ATTACHMENT VEHICLE TYPE ENG STRUC WEEK TYPE ENG SALES BODY GEAR STEER MODEL YEAR PLANT CHASSIS RANGE DESC RANGE 124 26 B4204T12 2015 - 2015 - 201346 - 201516 124 40 B4204T11 2015 - 2015 - 201346 - 201516 134 26 B4204T12 2015 - 2015 - 201346 - 201516 134 49 B4204T9 2015 - 2015 - 201346 - 201516 13X 40 B4204T11 2015 - 2015 - 201346 - 201516 15X 26 B4204T12 2015 - 2015 - 201346 - 201516 15X 40 B4204T11 2015 - 2015 - 201346 - 201516 15X 40 B4204T11 2015 - 2015 - 201346 - 201516 15X 40 B4204T11 2015 - 2015 - 201346 - 201516 15X 40 B4204T11 2015 - 2015 - 201346 - 201516 15X 49 B4204T9 2015 - 2015 - 201346 - 201516 256 2016 - 2016 - 201505 - 201516 CSC CUSTOMER SYMPTOM CODES CODE DESCRIPTION 3L TECHNICIAN INFORMATION / REPAIR INFORMATION / NOT FOR WARRANTY USE “ RIGHT FIRST TIME IN TIME ” PRODUCED IN THE USA AND AVAILABLE AS AN ELECTRONIC DOCUMENT . HARD COPY DOCUMENTS ARE PRINTED IN USA ON RECYCLED PAPER CONTAINING A MINIMUM OF 50% WASTEPAPER AND 10% POST - CONSUMER WASTE . © 2015 VOLVO CARS OF NORTH AMERICA, LLC TECHNICAL JOURNAL 30268 VST OPERATION NUMBER VST OPERATION NUMBER DESCRIPTION 26214-2 THERMOSTAT REPLACE 36001-2 DTC READ / RESET/KNOWN DTC WITH VIDA DTC DIAGNOSTIC TROUBLE CODES CONTROL MODULE CODE FAULT TYPE ECM P059700 PERMANENT ECM P059800 PERMANENT ECM P059900 PERMANENT ECM P059700 INTERMITTENT ECM P059800 INTERMITTENT ECM P059900 INTERMITTENT TEXT DESCRIPTION : IF ANY OF ABOVE DTC' S ARE SET IN THE ECM FOR THE PRE-HEATED THERMOSTAT IN THE COOLING SYSTEM , FOLLOW ADVICE UNDER SERVICE . PRODUCT MODIFICATION : N / A . MATERIAL RETURN : YES , ONLY IF REQUESTED VIA THE VEHICLE
TJ314672017-01-17. Service bulletin. ENGINE. VOLVO CAR SERVICE AND PARTS BUSINESS TECHNICAL JOURNAL TITLE : NOISE FROM TIMING BELT DURING IDLING REF NO:ISSUING DEPARTMENT : CAR MARKET : UNITED STATES AND CANADA TJ 31467 TECHNICAL SERVICE PARTNER : ISSUE DATE : STATUS DATE : 3 US 7510 VOLVO CAR USA 2016 - 04 - 07 2016 - 04 - 12 FUNC GROUP : FUNC DESC:2158 TENSIONER PAGE 1 OF 7 ATTACHMENT FILE NAME FILE SIZE TJ31467 - NOISE FROM TIMINGBELT.M4A 0.1201 MB TJI - 494212 - 1_1_0_EN - US.PDF 0.8488 MB VEHICLE TYPE ENG STRUC WEEK TYPE ENG SALES BODY GEAR STEER MODEL YEAR PLANT CHASSIS RANGE DESC RANGE 138 40 B4204T11 2016 - 2016 36 0085122 - 9999999 201517 - 203052 CSC CUSTOMER SYMPTOM CODES CODE DESCRIPTION ZE IDLING / UNUSUAL NOISE VST OPERATION NUMBER VST OPERATION NUMBER DESCRIPTION 98628 - 2 CAMSHAFT BELT ADJUST TEXT DESCRIPTION : NOISE FROM THE TIMING BELT MAY OCCUR ON NEW CARS WHEN THE ENGINE IS IDLING . CHECK ATTACHED SOUND FILE FOR REFERENCE . “ RIGHT FIRST TIME IN TIME ” PRODUCED IN THE USA AND AVAILABLE AS AN ELECTRONIC DOCUMENT . HARD COPY DOCUMENTS ARE PRINTED IN USA ON RECYCLED PAPER CONTAINING A MINIMUM OF 50% WASTEPAPER AND 10 % POST - CONSUMER WASTE . © 2016 VOLVO CAR USA , LLC TECHNICAL JOURNAL 31467 SERVICE : DO NOT REPLACE ANY PARTS! PERFORM A RE - ADJUSTING OF THE TIMING BELT TENSION ACCORDING THE ATTACHED INSTRUCTION . VEHICLE REPORT:YES , PLEASE SUBMIT A VEHICLE REPORT IF THE SERVICE SOLUTION DESCRIBED IN THIS TJ HAS NO EFFECT . USE CONCERN AREA “ VEHICLE REPORT ” AND SUB CONCERN AREA “ SUPPORT NOT NEEDED ” , USE FUNCTION GROUP 2158 . TO VIEW TJ ATTACHMENTS CONTINUE TO NEXT PAGE . THIS TJ HAS TWO ATTACHMENTS . PAGE 2 OF 7 2016 - 04 - 12 VOLVO CAR CUSTOMER SERVICE TJ INSTRUCTION VCC - 494212 - 1 TITLE TIMING BELT PAGE 1 ( 5 ) ACTION ADJUSTMENT OPERATION NUMBER : 98628 - 2 ISSUE DATE REASON 1 2016 - 04 FIRST ISSUE AFFECTED VEHICLES MODEL YEAR MODEL ENGINE 2016 S60L B4154T4 B4204T11 , 19 2016 XC60 B4204T11 EQUIPMENT DESIGNATION PART NO . ALLEN KEY TJ INSTRUCTION VCC - 494212 - 1 PAGE 2 ( 5
TJ315432017-01-13. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. THIS IS A TECHNICAL JOURNAL: THIS JOURNAL IS A GUIDE FOR PERFORMING SOFTWARE DOWNLOADS. SERVICE: *SEE GUIDE UPDATED OCT. 12, 2016 FOR RELEVANT P5/SPA SOFTWARE DOWNLOAD INFORMATION: P5_SPA_SW_GUIDE.PDF SEE VIDA SOFTWARE TAB FOR ALL OTHER VEHICLES.THE ATTACHED CHECKLISTS CAN BE USED FOR RESTORING CUSTOMER SETTINGS, WHERE APPLICABLE.
TJ291312017-01-13. Service bulletin. ENGINE; POWER TRAIN. THIS IS A TECHNICAL JOURNAL: CUSTOMER MAY EXPERIENCE A LOW OIL LEVEL WARNING IN DIM AND /OR OIL LEAKAGE FROM THE ENGINE. THE OIL MAY LEAK DUE TO A CRACK IN THE PLUG FROM THE VVT PULLEY REPLACE BOTH PLUGS IN BOTH VVT-PULLEYS ACCORDING TO THE ATTACHED INSTRUCTION. PLUG PN:31375877 IF THE TIMING BELT IS EFFECTED WITH OIL , REPLACE THE TIMING BELT ACCORDING TO VIDA INSTRUCTIONS.
TJ267532017-01-13. Service bulletin. ELECTRICAL SYSTEM. THIS IS A TECHNICAL JOURNAL: IT HAS BEEN NOTICED ON REQUESTED MATERIALS THAT PAS SENSORS ARE ANALYZED WITHOUT FINDING ANY FAULT ON THE PARTS. AS A HELP TO THE TROUBLESHOOTING ON PARKING ASSISTANCE SYSTEM, WE HAVE DEVELOPED SOME POINTS OF POSSIBLE ACTIONS IN CASE OF PROBLEMS. FALSE DETECTION MAY BE CAUSED BY VARIOUS REASON EXPLAINED IN THIS TECHNICAL JOURNAL.
TJ208032017-01-13. Service bulletin. ENGINE. THIS IS A TECHNICAL JOURNAL: IN CASE OF COMPLAINT OF NOISE, SOME "TOOLS" HAVE BEEN CREATED TO HELP YOU TO DO A BETTER AND MORE PRECISE FAULT TRACING
SMB17-2017A2017-01-12. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT. VOLVO CARS SERVICE AND PARTS BUSINESS SERVICE MANAGER BULLETIN TITLE : RETAIL CAR DELIVERY PROCESS ALL MY 2016 S60 , V60 , XC60 , XC70 AND S80 GROUP : NO:ISSUING DEPARTMENT : CAR MARKET : UNITED STATES AND CANADA 17 2016A SERVICE OPERATIONS REFERENCE BULLETINS :DATE: SMB 17 - 017,TJ 29233 ,TJ 20278 , WARRANTY ADMIN . MANUAL YEAR MONTH DAY SERVICE SERVICE WARRANTY 2015 05 12 MANAGER WRITER ADMINISTRATOR SERVICE PERSONNEL : READ AND INITIAL PAGE 1 OF 12 CLEANING WIPER BLADES – DO NOT CLEAN WIPER BLADES WITH A SOLVENT AND DO NOT REMOVE THE GRAPHITE PROTECTION . ONLY GENTLY CLEAN WIPER BLADES TO REMOVE ANY GRIT THAT MAY HAVE BUILT UP WHILE SITTING IN INVENTORY . NOTE : MINIMUM TECHNICIAN LEVEL REQUIRED TO PERFORM A PDS IS A VOLVO CERTIFIED MECHANIC LEVEL . NEW : VEHICLE SET - UP STEP , ACTIVATION OF SENSUS CONNECT WITH VOLVO ON CALL USING TJ 29233 NEW : VEHICLES PRODUCED AFTER WEEK 48 OF 2014 INCLUDE A KIT OF 20 WHEEL CAPS TO BE INSTALLED ON THE WHEEL BOLTS THIS BULLETIN CONTAINS INFORMATION ON THE FOLLOWING STEPS WHICH MAKE UP THE RETAIL CAR DELIVERY PROCESS .
SMB17-2016A2017-01-12. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT. VOLVO CAR SERVICE AND PARTS BUSINESS SERVICE MANAGER BULLETIN TITLE : RETAIL CAR DELIVERY PROCESS MY 2017 S60 , V60 AND XC60 ( P3 ) GROUP : NO : ISSUING DEPARTMENT : CAR MARKET : UNITED STATES AND CANADA 17 2017A SERVICE OPERATIONS REFERENCE BULLETINS : ISSUE DATE : STATUS DATE : SMB 17 - 017 , TJ 29233 , TJ 20278 , WARRANTY ADMIN . MANUAL 2016 - 03 - 08 2016 - 04 - 27 SERVICE SERVICE WARRANTY MANAGER WRITER ADMINISTRATOR SERVICE PERSONNEL : READ AND INITIAL PAGE 1 OF 12 CLEANING WIPER BLADES – DO NOT CLEAN WIPER BLADES WITH A SOLVENT AND DO NOT REMOVE THE GRAPHITE PROTECTION . ONLY GENTLY CLEAN WIPER BLADES TO REMOVE ANY GRIT THAT MAY HAVE BUILT UP WHILE SITTING IN INVENTORY . NOTE : MINIMUM TECHNICIAN LEVEL REQUIRED TO PERFORM A PDS IS A VOLVO CERTIFIED MECHANIC LEVEL . THIS BULLETIN CONTAINS INFORMATION ON THE FOLLOWING STEPS WHICH MAKE UP THE RETAIL CAR DELIVERY PROCESS . • VEHICLE INSPECTION PROCEDURE ( TRUCK DELIVERY ) • PRE - DELIVERY SERVICE ( PDS ) • VEHICLE IN STOCK MAINTENANCE • VEHICLE DELIVERY ( CUSTOMER DELIVERY ) SOME VEHICLES WITH LIGHT - COLORED INTERIORS INCLUDE LEATHER CARE WIPES ( 31393559 ) . THESE WIPES SHOULD BE PRESENTED TO THE CUSTOMER WITH THE OWNER’S INFORMATION MATERIALS ( GLOVE BOX MATERIALS ) . FLOOR MAT INSTALLATION : NEVER USE MORE THAN ONE FLOOR MAT AT A TIME ON THE DRIVER’S FLOOR . NEW CAR DELIVERY IS A CRUCIAL STEP IN THE RETAIL CAR DELIVERY PROCESS . AT THIS POINT THE BUYING EXPERIENCE TURNS INTO A LONG - TERM RELATIONSHIP . IT IS THE RETAILER’S RESPONSIBILITY TO ENSURE THAT THE CAR AND THE EXPERIENCE ARE AS ENJOYABLE AND INFORMATIVE AS POSSIBLE . STOCK MAINTENANCE IS A KEY ELEMENT IN THE OVERALL PROCESS . IT IS IMPORTANT TO KEEP YOUR VEHICLE INVENTORY MAINTAINED AND FRESH . “ RIGHT FIRST TIME IN TIME ” PRODUCED IN THE USA AND AVAILABLE AS AN ELECTRONIC DOCUMENT . HARD COPY DOCUMENTS ARE PRINTED IN USA ON RECYCLED PAPER CONTAINING A MINIMUM OF 50 % WASTEPAPER AND 10 % POST - CONSUMER WASTE .
SMB00-3542017-01-11. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. WARRANTY, CUSTOMER PAY AND/OR INTERNAL REPAIRS PERFORMED MUST BE VERIFIED BY A PUNCHED TIME FLAG ON THE BACK OF THE REPAIR ORDER HARD COPY. EACH REPAIR LINE MUST HAVE A SEPARATE AND IDENTIFIABLE TIME PUNCH FOR THE RESPECTIVE REPAIR FOR ALL REPAIR TYPES, I.E., WARRANTY, CUSTOMER PAY, AND INTERNAL.
SMB00-3392017-01-11. Service bulletin. EQUIPMENT. THIS IS A SERVICE MANAGER BULLETIN: THIS PROGRAM WILL NOW PROVIDE VOLVO RETAILERS ADDITIONAL LATITUDE, TO PROACTIVELY ADDRESS NON-WARRANTY CUSTOMER CONCERNS IN AN EXPEDITIOUS MANNER. THE OWNERSHIP EXPERIENCE SHOULD NEVER BE COMPROMISED DUE TO A CUSTOMER INCONVENIENCE. IN AN EFFORT TO HELP SUPPORT AN ENHANCED CUSTOMER OWNERSHIP EXPERIENCE, VOLVO RETAILERS WILL NOW HAVE THE ABILITY TO SELF-AUTHORIZE GOODWILL CLAIMS (1 TIME ONLY PER VIN) FOR THE CUSTOMERS OF THE NEW MY 2016 & MY2017 XC90 T8 PLUG-IN HYBRID’S AND MY2017 S90.
TJ314461120160922016-12-29. Service bulletin. EQUIPMENT. THIS IS A TECHNICAL JOURNAL: THE FRONT AND REAR FENDER FLARES MAY HAVE POOR FIT. IMPROVEMENTS HAVE BEEN IMPLEMENTED ON PARTS FROM STRUCTURE WEEK 16W05-> FOR V60CC AND 16W08-> FOR S60CC. IF A FAILURE OCCURS AFTER THE BREAKPOINT, PLEASE REPORT BACK ON WHICH FENDER FLARE, AND WHERE THE LOCATION OF THE FAILURE IS. SEE ATTACHED GUIDELINE TO JUDGE THE FAILURE. REPLACE THE FENDER FLARE ACCORDING TO VIDA. IF A FAILURE MAY OCCURS ON VEHICLES AFTER ABOVE STRUCTURE WEEKS, DOCUMENT THE FAILURE MODE BEFORE THE REPAIR IS DONE.
TJ309083020160922016-12-29. Service bulletin. FORWARD COLLISION AVOIDANCE. THIS IS A TECHNICAL JOURNAL: IF THE VEHICLE SHOWS A CONSTANT BLIS WARNING LIGHT WITHOUT ANY OBJECTS IN THE BLIND SPOT, THEN THIS COULD BE CAUSED BY A HW PROBLEM IN THE SIDE OBJECT DETECTION RADAR (SODL/SODR). IN CASE OF CUSTOMER COMPLAINTS FOR ABOVE SYMPTOM IS CONFIRMED, REPLACE THE SODL OR SODR ON THE SIDE FOR WHICH THE SYMPTOM IS SHOWN AND DOWNLOAD SOFTWARE SOD RELOAD.
TJ202786122016092016-12-29. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. THIS IS A TECHNICAL JOURNAL: IT IS PROVIDED AS A GUIDE FOR PERFORMING SOFTWARE DOWNLOADS. FOLLOW INSTRUCTIONS PROVIDED FOR PROPER SOFTWARE DOWNLOADS BY YEAR AND MODEL.
TJ309344020160902016-12-29. Service bulletin. SERVICE BRAKES. THIS IS A TECHNICAL JOURNAL: IF SQUEALING NOISE OCCURS FROM FRONT BRAKES ON CARS BUILT BEFORE CHASSIS NUMBER 040328, THEN REPLACE FRONT DISCS ACCORDING TO VIDA, THE NEW BRAKE DISCS HAVE CHANGED METAL COMPOSITION IN ORDER TO REDUCE SQUEALING NOISE. ALSO REPLACE FRONT BRAKE PADS IF VEHICLE IS BUILT BEFORE 15W19, OR AFTER 15W20 IF THE BRAKE PADS ARE WORN DOWN OR THERE HAS BEEN A PREVIOUS ATTEMPT TO GREASE OR CHAMFER THE PADS TO REPAIR THE CAR.
SMB00071201609072016-12-27. Service bulletin. EQUIPMENT. THIS IS A SERVICE MANAGER BULLETIN: OCCASIONALLY, CUSTOMERS REQUEST FINANCIAL ASSISTANCE WHEN THE NEW CAR LIMITED WARRANTY, CPO LIMITED WARRANTY AND/OR THE VIP EXTENDED WARRANTY DOES NOT APPLY. THESE REQUESTS MAY BE CONSIDERED IF IT WILL ENHANCE OWNER RETENTION. RETAILERS SHOULD REQUEST FINANCIAL ASSISTANCE FOR THEIR CUSTOMERS BY CONTACTING THEIR AFTERSALES MARKET MANAGER (AMM), IF THEY ARE NOT A SELF-AUTHORIZING (LEVEL “A”) RETAIL FACILITY
TJ31462201604122016-12-24. Service bulletin. EQUIPMENT. THIS IS A TECHNICAL JOURNAL : IF A CUSTOMER SHOULD COMPLAIN OF A “VOLVO ON CALL SERVICE REQUIRED” MESSAGE AND THE DTC PHMB116F09 IS SET INTERMITTENTLY OR PERMANENT IN THE TEM3G MODULE, PLEASE FOLLOW THE BELOW INSTRUCTION UNDER SERVICE.
TJ30914201604282016-12-24. Service bulletin. VISIBILITY:REARVIEW MIRRORS/DEVICES. THIS IS A TECHNICAL BULLETIN : CUSTOMER MAY EXPERIENCE THAT THE FUNCTION FOLDING OUTER REAR VIEW MIRROR DO NOT WORK AND A NOISE IS PRESENT WHEN LOCKING/UNLOCKING VEHICLE.
TJ31446201604222016-12-22. Service bulletin. EQUIPMENT. THIS IS A TECHNICAL JOURNAL : THE FRONT AND REAR FENDER FLARES MAY HAVE POOR FIT. IMPROVEMENTS HAVE BEEN IMPLEMENTED ON PARTS FROM STRUCTURE WEEKS ABOVE. IF A FAILURE OCCURS AFTER THE BREAKPOINT, PLEASE REPORT BACK ON WHICH FENDER FLARE, AND WHERE THE LOCATION OF THE FAILURE IS. SEE ATTACHED GUIDELINE TO JUDGE THE FAILURE.
TJ31216201604212016-12-22. Service bulletin. ENGINE. THIS IS A TECHNICAL JOURNAL : IF AN ENGINE STILL HAS A HIGH LEVEL OF OIL CONSUMPTION DESPITE FOLLOWING TJ30087, FOLLOW THE ACTIONS DESCRIBED UNDER SERVICE.
SPJ30701201604192016-12-22. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. THIS IS A SERVICE PRODUCT JOURNAL : THE PREVIOUSLY REPORTED ISSUE WITH VIDA 2015 AND BATTERY TESTING HAS BEEN RESOLVED. VIDA 2015 BATTERY TESTING IS THE ONLY APPROVED METHOD FOR PRODUCING BATTERY TEST CODES. THE USE OF VIDA CLASSIC OR OTHER MEASURING TOOLS IS NOT CONSIDERED ACCEPTABLE WHEN SUBMITTING WARRANTY CLAIMS.
TJ30971201604192016-12-22. Service bulletin. ENGINE AND ENGINE COOLING. THIS IS A TECHNICAL JOURNAL : WHEN ANY REPAIR IS MADE ON ENGINE COOLING SYSTEM, MAKE SURE THAT THE VOLVO SPECIAL TOOL P/N 9512957 COOLANT FILLING EQUIPMENT IS USED, IN ORDER TO PREVENT FUTURE OVER TEMPERATURE DAMAGE ON ENGINE.
TJ31467201604122016-12-22. Service bulletin. ENGINE; EQUIPMENT. THIS IS A TECHNICAL JOURNAL : NOISE FROM THE TIMING BELT MAY OCCUR ON NEW CARS WHEN THE ENGINE IS IDLING. CHECK ATTACHED SOUND FILE FOR REFERENCE.
SMB00340201604112016-12-21. Service bulletin. ENGINE; EQUIPMENT. THIS IS A SERVICE MANAGER BULLETIN : TO FURTHER ENHANCE THE VOLVO’S OWNERSHIP EXPERIENCE, VOLVO CAR CANADA LIMITED IS OFFERING THE VOLVO PREPAID MAINTENANCE (VPM) PROGRAM. THIS PLAN IS DESIGNED TO ENHANCE CUSTOMER OWNERSHIP EXPERIENCE BY PROVIDING MAINTENANCE AND WEAR COVERAGE AND WILL HELP ENSURE TROUBLE FREE OPERATION OF THEIR NEW VOLVO VEHICLE.
SMB00349201604112016-12-21. Service bulletin. ENGINE; EQUIPMENT. THIS IS A SERVICE MANAGER BULLETIN : TO FURTHER ENHANCE THE VOLVO OWNERSHIP EXPERIENCE, VOLVO CAR CANADA LIMITED OFFERED FACTORY SCHEDULED MAINTENANCE (FSM) ON CERTAIN MY14, 15 AND 16 VEHICLES.

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