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Service bulletins for the 2015 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.

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

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Bulletins, newest first
T-SB-0061-162018-04-23. Service bulletin. SEATS. TSB: Some 2014 ? 2015 model year Corolla vehicles may exhibit splitting/separation as a result of poor manufacturing of the Front Seat Cushion Cover. The tearing will occur at the seam of the outer bolster and center trim (see picture below for exact location/condition). Follow the Repair Procedure to address this condition.
T-TT-0377-15_Rev2018-04-23. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY. TT: Some customers may experience poor outgoing Bluetooth sound quality, this can occur for various reasons. Current multimedia systems are designed with the ability to adjust Bluetooth sound quality to compensate for Echo or excessive background noise.
T-TT-0375-15_Rev2018-04-23. Service bulletin. EQUIPMENT; EQUIPMENT:ELECTRICAL. TT: For customer concerns of no or poor outgoing sound from the Bluetooth systems there are diagnostics in the repair manual which can be performed to diagnose the condition.
T-SB-0229-12_Rev2018-04-23. Service bulletin. ELECTRICAL SYSTEM. TSB: REVISION NOTICE November 22, 2017 Rev1: ? Applicability has been updated to include 2014 ? 2018 model year vehicles. Any previous printed versions of this bulletin should be discarded. In the event that a Toyota vehicle becomes submerged in water, many components may be physically damaged. Electrical and electronic components, including wiring harnesses, are particularly susceptible to corrosion and subsequent malfunction. Although any flooding can be damaging, salt water flooding elevates the potential for abnormal conditions and may increase risks due to its highly corrosive and conductive nature. Salt residue also continues to corrode and remain conductive even after a vehicle dries. This bulletin is intended to assist with safe handling and inspection of flood damaged vehicles and to provide basic guidance on likely needed repairs.
T-SB-0012-13 Rev2018-04-02. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. TSB: OBSOLETE NOTICE: September 14, 2016: This bulletin is now obsolete. Please see T-SB-0134-16.
T-SB-0142-13 Rev2018-04-02. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. TSB: REVISION NOTICE November 10, 2016 Rev2: ? Applicability has been updated to include 2016 ? 2017 model year Toyota vehicles. ? Parts Information section has been updated. Some 2004 ? 2017 model year Toyota vehicles may exhibit odors naturally occurring from the HVAC system and/or related environmental factors. Although there is no way to eliminate these odors, follow the General Procedure in this bulletin to minimize the odors experienced.
T-TT-0424-162018-04-02. Service bulletin. WHEELS:LUGS/NUTS/BOLTS/STUDS. TT: Front Brake Vibration Key Points: * Issue can occur at any time if improper torque is applied on lug nuts * Over time, even one lug nut over or under torqued, can cause a vibration issue * When lug nuts are over torqued, this causes the rotor to have a runout out condition which can lead to brake vibration concerns * Brake vibration issues can occur at parking lot to highway speeds * Brake vibration issues can occur at light to moderate braking * Tightening lug nuts in a star pattern method during the torqueing process will assure that even/equal pressure is applied across the rotor hub surface * Torque sticks/wrenches should be used to apply accurate torque values when tightening * Do Not use impact guns/ratchets to completely run lug nuts up to the wheel surface
T-SB-0150-162018-04-02. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER. TSB: Some 2014 ? 2017 model year CVT Corolla vehicles may exhibit a MIL ?ON? condition with Diagnostic Trouble Code (DTC) P2757 (Torque Converter Clutch Pressure Control Solenoid Performance [Shift Solenoid Valve SL]). Follow the Repair Procedure below to address this condition.
T-TT-0010-10 Rev2018-04-02. Service bulletin. BACK OVER PREVENTION; ENGINE. Tech Tip: Low battery voltage can contribute to a MIL "ON" condition for P0335 (Crankshaft Position Sensor Circuit) and/or P0340 (Camshaft Position Sensor Circuit) due to inconsistent rotational speed of the engine's crankshaft.
T-SB-0012-13 Rev2018-04-02. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. 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-0246-13 Rev2018-04-02. Service bulletin. VISIBILITY; ELECTRICAL SYSTEM. Tech Tip: Tips for writing a DPR (Dealer Product Report) on manufacturing issues for windows and windshields.
T-TT-0262-13 Rev2018-04-02. Service bulletin. ENGINE. Tech Tip: Starting with the 2010 Model Year, Toyota began a gradual transition to the use of synthetic 0w20 viscosity engine oil. There are multiple benefits of this oil including: Reduced friction and wear on engine surfaces, Improved fuel economy, Reduction in waste oil stream (in vehicles approved for 10,000 mile oil change intervals), Reduced maintenance cost (in vehicles approved for 10,000 mile oil change intervals). Due to the improved performance and durability of 0w20 synthetic oil, Toyota has extended the oil change intervals to 10,000 mile for most vehicles that require this oil. With this change, the following should be noted: The 2TR-FE (4Runner/Tacoma) and the 3UR-FBE (Flex Fuel Tundra/Sequoia) are the exceptions to this new change interval program; these engines have not been approved for the 10,000 mile interval at this time. A 5,000 mile oil change interval is still required for these vehicles. Also, the Flex Fuel 3UR-FBE requires a 2,500 mile interval when operated on E85 50% of the time or more. Only Toyota vehicles in which 0w20 oil is mandatory (except for the 2TR-FE & 3UR-FBE Engines) have been approved for extended oil change intervals. Vehicles in which 0w-20 is an option to 5w20 (or 5w30) will continue to require 5,000 mile change intervals, even if 0w20 oil is used. In case of vehicles with 10,000 mile oil change intervals, the 5,000 mile service interval has not been eliminated. The traditional 5,000 mile maintenance procedures (such as tire rotation) will continue to be required, and the fluid levels (including engine oil) will need to be checked and adjusted at this time. If the vehicle operation meets the standard criteria for "Special Operating Conditions" such as: driving off-road, on dirt roads, towing a trailer, making repeated short trips under 32 degrees F, or extensive idling, the engine oil must be replaced at 5,000 mile intervals, regardless of oil used.
T-SB-0043-14 Rev2018-04-02. Service bulletin. EQUIPMENT:ELECTRICAL:ANTI-THEFT DEVICES. TSB: The Immobilizer and Smart Key Reset is a feature that allows the registration of new keys when all master keys are lost. Once the system is reset, all previously registered keys will be erased.
T-SB-0043-142018-04-02. Service bulletin. EQUIPMENT:ELECTRICAL:ANTI-THEFT DEVICES. TSB: The Immobilizer and Smart Key Reset is a feature that allows the registration of new keys when all master keys are lost. Once the system is reset, all previously registered keys will be erased.
T-SB-0289-172018-04-02. Service bulletin. POWER TRAIN. TSB: Some 2014 - 2017 model year Corolla and 2017 model year iM vehicles may exhibit a MIL "ON" condition with Diagnostic Trouble Code (DTC) P2820 present, indicating a Pressure Control Solenoid (shift solenoid valve SLP) Performance condition. The Engine Control Module (ECM) (SAE term: Powertrain Control Module/PCM) logic has been updated to prevent this condition.
T-TT-0309-14 Rev2018-04-02. Service bulletin. ELECTRICAL SYSTEM. TT: 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-0328-152018-04-02. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS. TT: Some vehicles with aftermarket Headlamps (non OEM) are being repaired/replaced under warranty with OEM equipment.
T-TT-0340-152018-04-02. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. TT: While accessing the repair manuals for models that have undergone a full model change starting with the 2013 RAV4, you may encounter disabled (i.e. greyed out) "INFO Button" links while browsing with Internet Explorer 10. You can identify the affected manuals by locating the adjustable Production Date Range, or PDR, drop downs above the navigation tree. Only repair manuals with these drop downs will be affected.
T-TT-0234-13 Rev2018-04-02. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). 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-0234-13 Rev2018-04-02. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). 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-SB-0029-14 Rev2018-04-02. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY. TSB: 2015 ? 2016 model year vehicles are equipped with driver?s side floor mat retaining clips to secure the floor mat in the correct position. In addition, some models may utilize retaining clips for passenger side and rear seat floor mats as well. Follow the appropriate installation procedure to attach the driver?s side, and if applicable, the passenger?s side and rear seat floor mats to the vehicle carpet using the floor mat retaining clips during Pre-Delivery Service (PDS).
T-SB-0024-14 Rev2018-04-02. Service bulletin. EQUIPMENT:ELECTRICAL; EQUIPMENT:ELECTRICAL:ANTI-THEFT DEVICES; EQUIPMENT ADAPTIVE/MOBILITY. TSB: Some 2015 - 2016 model year vehicles are equipped with a Smart Key system, which allows the customer to enter and start the vehicle without using a mechanical key. To ensure the system is operating properly, the Smart Key functions (Smart Entry and Smart Start) should be inspected during Pre-Delivery Service (PDS). The following inspection procedure has been developed to confirm the proper operation of the Smart Key system prior to vehicle delivery.
T-SB-0218-17_Rev2018-04-02. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; AIR BAGS. TSB: REVISION NOTICE July 20, 2017 Rev1: Applicability has been updated to exclude 2007 ? 2017 model year Avanza vehicles. Some hazardous material treatment and handling regulations at the state and local level define the pre-disposal deployment of airbag and pre-tensioner assemblies as hazardous material treatment. Hazardous material treatment may require special training, certification or licensing in certain areas. TMS recommends that dealership personnel carefully review and follow ALL local and state regulations, and where necessary, contract with Environmental Protection Agency (EPA) Licensed Hazardous Waste Transportation and Disposal facilities.
T-SB-0003-14 Rev2018-04-02. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Obsolete Notice: April 2, 2015: This bulletin is now obsolete. Please see T-SB-0015-15. ©
T-SB-0033-14_Rev2018-04-02. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. TSB: REVISION NOTICE March 08, 2017 Rev1: ? Applicability has been updated to include 2015 - 2017 model year Toyota vehicles. ? The Parts Information section has been updated. Some vehicles in particular geographic areas may exhibit a condition where the HVAC Evaporator Drain Hose has become obstructed with an insect nest. An insect repellent drain hose tip (ARINIX® Tip) is now available to help minimize future occurrences of this environmental condition. For some models, a new drain hose is required to properly fit the ARINIX® Tip. Follow the procedures in this bulletin for proper handling and installation of this optional service part.

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