WenmarOpen by Wenmar Pro

Service bulletins for the 2011 Toyota Corolla

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.

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

By type

By component

By trouble code

By topic

Bulletins, newest first
T-SB-0134-142017-08-01. Service bulletin. POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION. TSB: The purpose of this bulletin is to provide precautions to follow when installing an automatic transmission/transaxle assembly to avoid MIL "ON" shifting issues and/or transmission damage. Use the information in this bulletin when installing an automatic transmission/transaxle assembly.
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-0260-08 Rev2017-08-01. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. TSB: The purpose of this bulletin is to assist in the identification and location of serial numbers on 2006 -2014 model year remanufactured automatic transmissions.
T-SB-0014-11 Rev2017-08-01. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER; POWER TRAIN:AUTOMATIC TRANSMISSION. TSB: The purpose of this service bulletin is to provide information regarding the installation of the correct torque converter bolts during automatic transmission/transaxle assembly replacement. Incorrect torque converter bolts or missing washers can cause damage to the torque converter assembly.
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-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."
WPB (POL 14-12)_2017-03-31. Service bulletin. ENGINE. WPB: TOYOTA HAS RECEIVED SOME REPORTS WHERE VEHICLES MAY EXHIBIT EXCESSIVE ENGINE OIL CONSUMPTION. TOYOTA IS NOW ANNOUNCING THE PART REPLACEMENT PHASE OF WARRANTY ENHANCEMENT PROGRAM ZE7 FOR VEHICLES EXHIBITING EXCESSIVE ENGINE OIL CONSUMPTION.
T-TT-0353-15 REV2017-03-31. Service bulletin. ENGINE. TT: THERE HAS BEEN SOME CONCERN WITH 3 PIECE RING INSTALLATIONS FOR 2AZ-FE AND 2AZ-FXE ENGINES. THIS TECH TIP CONTAINS THE ACCEPTED INSTALLATION METHOD REQUIRED FOR TOYOTA VEHICLES.
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-0361-152017-03-28. Service bulletin. ENGINE. TT: BASED ON CURRENT PART ORDER ALLOCATION, SOME PISTON TYPES HAVE BEEN INCORRECTLY IDENTIFIED WHILE UNDERGOING THE ZE7 2AZ OIL CONSUMPTION REPAIR PROCEDURE. REPLACEMENT PISTONS FOR ZE7 SHOULD BE ORDERED BASED ON THE PISTONS REMOVED FROM THE EXISTING CYLINDER BLOCK AND NO LONGER BY THE MEASUREMENT. THIS TECH TIP INCLUDES INFORMATION REGARDING PRODUCTION ALLOCATION AND INSTRUCTIONS FOR IDENTIFYING PISTON TYPE ON SUBJECT ENGINES. THIS WILL BE PUBLISHED IN THE NEXT REVISION OF T-SB-0030-15
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-353-15 REV12017-03-28. Service bulletin. ENGINE. TT: THERE HAS BEEN SOME CONCERN WITH 3 PIECE RING INSTALLATIONS FOR 2AZ-FE AND 2AZ-FXE ENGINES. THIS TECH TIP CONTAINS THE ACCEPTED INSTALLATION METHOD REQUIRED FOR TOYOTA VEHICLES.
POL 14-122017-03-24. Service bulletin. ENGINE; EQUIPMENT. WPB: TOYOTA HAS RECEIVED SOME REPORTS WHERE THE VEHICLES MAY EXHIBIT EXCESSIVE ENGINE OIL CONSUMPTION. TOYOTA IS NOW ANNOUNCING THE PART REPLACEMENT PHASE OF WARRANTY ENHANCEMENT PROGRAM ZE7 FOR VEHICLES EXHIBITING EXCESSIVE OIL CONSUMPTION.
T-TT-0361-15 REV2017-03-24. Service bulletin. ENGINE. "TT: BASED ON CURRENT PART ORDER ALLOCATION, SOME PISTON TYPES HAVE BEEN INCORRECTLY IDENTIFIED WHILE UNDERGOING THE ZE7 2AZ OIL CONSUMPTION REPAIR PROCEDURE. H REPLACEMENT PISTONS FOR ZE7 SHOULD BE ORDERED BASED ON THE PISTONS REMOVED FROM EXISTING CYLINDER BLOCK AND NO LONGER BY MEASUREMENT. H THIS TECH TIP INCLUDES INFORMATION REGARDING PRODUCTION ALLOCATION AND INSTRUCTIONS FOR IDENTIFYING PISTON TYPE ON SUBJECT ENGINES. THIS WILL BE PUBLISHED IN THE NEXT REVISION OF T-SB-0030-15."
T-SB-0030-152017-03-23. Service bulletin. ENGINE. "TSB: SOME 2006 – 2013 MODEL YEAR VEHICLES EQUIPPED WITH THE 2AZ ENGINE MAY EXHIBIT ENGINE OIL CONSUMPTION. THE PISTON ASSEMBLY HAS BEEN CHANGED TO MINIMIZE OIL CONSUMPTION. USE THE FOLLOWING REPAIR PROCEDURE TO ADDRESS THIS CONDITION."
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-0372-152017-03-07. Service bulletin. ENGINE. "TT: IN CERTAIN CASES, VEHICLES UNDERGOING THE ZE7 AZ OIL CONSUMPTION REPAIR PROCEDURE WILL REQUIRE A SHORT BLOCK REPLACEMENT. CURRENTLY, WHEN A NEW SHORT BLOCK ASSEMBLY IS ORDERED FOR A VEHICLE, DOWELS PINS CONNECTING THE SHORT BLOCK TO THE CRANKCASE STIFFENER ARE NOT PRESENT."
ZE7_PHASE2 11/182017-02-16. Service bulletin. EQUIPMENT; ENGINE. "WPB: THE ENGINE IS COVERED UNDER THE TOYOTA NEW VEHICLE LIMITED WARRANTY FOR 5 YEARS FROM THE DATE OF FIRST USE OR 60,000 MILES (WHICHEVER OCCURS FIRST). HOWEVER, TOYOTA IS ANNOUNCING A WARRANTY ENHANCEMENT PROGRAM TO COVER WARRANTY WORK FOR PARTS REPLACEMENT TO ADDRESS EXCESSIVE ENGINE OIL CONSUMPTION*. *NOTE: ELIGIBILITY FOR PARTS REPLACEMENT UNDER THIS WARRANTY ENHANCEMENT PROGRAM IS DEPENDENT ON THE RESULTS OF A DEALER PERFORMED ENGINE OIL CONSUMPTION TEST. THIS WARRANTY ENHANCEMENT PROGRAM PROVIDES A PRIMARY AND SECONDARY COVERAGE EXTENSION TO THE VEHICLE’S “NEW VEHICLE LIMITED WARRANTY” FOR REPLACEMENT OF PARTS RELATED TO EXCESSIVE ENGINE OIL CONSUMPTION. IF THE CONDITION IS VERIFIED, WARRANTY WORK WILL BE PERFORMED IN ACCORDANCE WITH APPLICABLE TECHNICAL SERVICE BULLETIN UNDER THE TERMS OF THIS WARRANTY ENHANCEMENT PROGRAM."
ZE7_PHASE2 11/172017-02-16. Service bulletin. ENGINE; EQUIPMENT. "WPB: THE ENGINE IS COVERED UNDER THE TOYOTA NEW VEHICLE LIMITED WARRANTY FOR 5 YEARS FROM THE DATE OF FIRST USE OR 60,000 MILES (WHICHEVER OCCURS FIRST). HOWEVER, TOYOTA IS ANNOUNCING A WARRANTY ENHANCEMENT PROGRAM TO COVER WARRANTY WORK FOR PARTS REPLACEMENT TO ADDRESS EXCESSIVE ENGINE OIL CONSUMPTION*. *NOTE: ELIGIBILITY FOR PARTS REPLACEMENT UNDER THIS WARRANTY ENHANCEMENT PROGRAM IS DEPENDENT ON THE RESULTS OF A DEALER PERFORMED ENGINE OIL CONSUMPTION TEST. THIS WARRANTY ENHANCEMENT PROGRAM PROVIDES A PRIMARY AND SECONDARY COVERAGE EXTENSION TO THE VEHICLE’S “NEW VEHICLE LIMITED WARRANTY” FOR REPLACEMENT OF PARTS RELATED TO EXCESSIVE ENGINE OIL CONSUMPTION. IF THE CONDITION IS VERIFIED, WARRANTY WORK WILL BE PERFORMED IN ACCORDANCE WITH APPLICABLE TECHNICAL SERVICE BULLETIN UNDER THE TERMS OF THIS WARRANTY ENHANCEMENT PROGRAM."
ZE7_IMP 11/122017-02-16. Service bulletin. EQUIPMENT; ENGINE. DD: IN LIMITED CASES VEHICLES BEING SERVICED FOR ZE7 WILL REQUIRE A REPLACEMENT SHORT BLOCK. DEALERS WILL NEED TO INSTALL THE DOWEL PINS BETWEEN THE SHORT BLOCK AND LOWER CRANKCASE WHEN PERFORMING THIS REPAIR. A TECH TIP WILL BE RELEASED IN THE NEAR FUTURE TO SHOW THIS PROCEDURE, AND TSB REVISION WILL BE DEVELOPED.
POL14-122017-02-14. Service bulletin. EQUIPMENT; ENGINE. WARRANTY POLICY BULLETIN (POL14-12): TOYOTA HAS RECEIVED SOME REPORTS WHERE VEHICLES MAY EXHIBIT EXCESSIVE ENGINE OIL CONSUMPTION. TOYOTA IS NOW ANNOUNCING THE PART REPLACEMENT PHASE OF WARRANTY ENHANCEMENT PROGRAM ZE7 FOR VEHICLES EXHIBITING EXCESSIVE ENGINE OIL CONSUMPTION.
ZE72016-11-16. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. WARRANTY POLICY BULLETIN (POL14-12): ADDED THE SHORT BLOCK RELEASE AUTHORIZATION FLOW CHART. TOYOTA HAS RECEIVED SOME REPORTS WHERE VEHICLES MAY EXHIBIT EXCESSIVE ENGINE OIL CONSUMPTION. TOYOTA IS NOW ANNOUNCING THE PART REPLACEMENT PHASE OF WARRANTY ENHANCEMENT PROGRAM ZE7 FOR VEHICLES EXHIBITING EXCESSIVE ENGINE OIL CONSUMPTION.
T-TT-0242-132016-07-07. Service bulletin. STEERING:COLUMN; STEERING. Some customers have experienced amber colored oil like substance found on floor mats. Further investigation reveals the electric power steering column showing signs of the oiling substance leaking
T-SB-0189-122016-07-07. Service bulletin. SERVICE BRAKES. Rear Brake Strut Improvement
T-TT-0268-132016-04-12. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. 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.