2021 Toyota Corolla technical service bulletins
170 technical service bulletins and manufacturer communications cover the 2021 Toyota Corolla, including 10 warranty extensions.
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Although the flow shut-off valve is covered by Toyota’s New Vehicle Limited Warranty for 36 months or...
- Customer support program 24TE04
- Engine
- Frequently Asked Questions CUSTOMER SUPPORT PROGRAM 24TE04 Multiple Model & Model Year Toyota Vehicles...
- This Customer Support Program provides coverage as it applies to Flow Shut-off Valve Coolant Leak on...
- Obsolete notice
- Obsolete notice
- Some 2018 – 2024 model year Toyota vehicles equipped with a Premium Audio with Dynamic Navigation System...
- Condition in which a musty odor is present
- Obsolete notice
- Vibration or rattle noise from the right-hand engine mounting insulator sub-assembly
- The specific condition covered by this program is for a small engine coolant leak that can occur from the...
- MIL ON condition with one or more of the following Diagnostic Trouble Codes (DTCs) upon cold soak start up...
- Condition in which an “Engine Maintenance Required” message is displayed in the Multi-Information Display...
- The air conditioning dye injection tool kit has been developed to aid in identifying the location of air...
- To assist with the early detection and early resolution of audio related concerns you may be asked to...
- Some 2018 – 2024 model year Toyota vehicles equipped with a Premium Audio with Dynamic Navigation System...
- The Immobilizer and Smart Key Reset is a feature that allows the registration of new keys when all master...
- Acid rain results from rainwater or other airborne moisture that become acidic due to industrial chemical...
- To prevent brake rotor rust from forming during transportation and storage, wheel film will be used...
- The condition known as acid rain is caused by airborne chemicals or particles in the atmosphere, which mix...
- Toyota vehicles are currently protected with RapgardTM protective film designed to protect the horizontal...
- Vehicles may occasionally be subjected to contamination by airborne iron particles shed from railroad...
- Some technicians may report an engine oil leak from the Engine Oil Level Sensor area
- Oil leak that originates between the oil pan sub-assembly and the stiffening crankcase assembly.
- Condition in which a musty odor is present
- Vibration or rattle noise from the right-hand engine mounting insulator sub-assembly
- This Service Bulletin provides updated non-electric water pump leak inspection and diagnostic tips for...
- Toyota vehicles are currently protected with RapgardTM protective film designed to protect the horizontal...
- Customers have expressed concerns about the performance of Qi Wireless Chargers
- Obsolete notice
- This is to advise of various price adjustments that will affect Toyota Genuine Motor Oil and Long Life...
- The Immobilizer and Smart Key Reset is a feature that allows the registration of new keys when all master...
- Some 2018 ? 2022 model year Toyota vehicles equipped with a Premium Audio with Dynamic Navigation System...
- One or more of the following conditions: ?Milky/discolored engine oil
- Vibration or rattle noise from the right-hand engine mounting insulator sub-assembly
- TT: Some 19CY LG DCM equipped vehicles may not be able to complete the firmware update due to not having...
- The air conditioning dye injection tool kit has been developed to aid in identifying the location of air...
- TT: A very small percentage of customers experience operational difficulties with some telematics features...
- Replacement certification labels (the vinyl label installed on the driver door or door post) and VIN...
- TT: Confirm the vehicle meets the following conditions: 1) Rattle noise is coming from the brake pedal...
- Parking Brake Malfunction warning message on the Multi-information Display (MID) with Diagnostic Trouble...
- TT: Some Model Year 2018-2023 vehicles equipped with A25A-FKS/FXS or M20A-FKS/FXS engines may display the...
- TT: To assist with the early detection and early resolution of audio related concerns, it may be requested...
- Some 2018 ? 2022 model year Toyota vehicles equipped with a Premium Audio with Dynamic Navigation System,...
- Condition in which a musty smell is present
- Clicking noise when making turns greater than 90 degrees and accelerating with the steering wheel on full...
- TT: Some Model Year 2018-2021 vehicles equipped with A25A-FKS/FXS or M20A-FKS/FXS engines may display the...
- Paint stains after the removal of Rapgard?. The paint stains may appear to be under the clear coat but are...
- One or more of the following conditions: ?Diagnostic Trouble Code (DTC) B15A804 is present in current or...
- This Service Bulletin provides a procedure to properly perform the Techstream ?Control the Injection Mode?...
- TT: To improve customer support of telematics connected services features, additional resources have been...
- TT: Vehicle control apps might not operate as expected at times due to preconditions (normal operating...
- Some 2018 model year Camry and Camry Hybrid, 2019 model year Avalon and Avalon Hybrid, 2020 ? 2021 model...
- Obsolete notice
- TT: Some Toyota vehicles installed with Toyota Complete Maintenance Care (TCMC) brake pads may exhibit a...
- TT: When customers have a concern about a discharged battery, no start, or general battery concern, the...
- TSB This Service Bulletin includes guidelines meant to help determine whether to repair or replace a wire...
- TT: Some customers may experience the inability to activate Remote Connect or Remote Connect becoming...
- POL: This consolidated Tire Warranty Guide contains the complete warranty terms for all brands of ground...
- One or more of the following conditions: ?Milky/Discolored engine oil
- Obsolete notice
- TT: When used in conjunction with the Repair Manual, these Blind Spot Monitor, Forward Recognition Camera,...
- Parking Brake Malfunction warning message on the Multi-information Display (MID) with Diagnostic Trouble...
- Condition where the HVAC evaporator drain hose has become obstructed with an insect nest
- Long-term or off-site storage requires special care to keep vehicles factory fresh and ready for delivery
- TSB During the manufacturing process, tires are mounted on the vehicle as matched sets to help reduce...
- 2022 model year Toyota vehicles are equipped with driver side floor mat retainers to secure the floor mat...
- Updates to the 2014-2021 toyota universal flat rate manual
- One or more of the following conditions: ?Intermittent blank screen
- This Service Bulletin provides a procedure to properly perform the Techstream ?Control the Injection Mode?...
- Toyota Safety Recall and Service Campaign
- TT: Some Toyota vehicles installed with Toyota Complete Maintenance Care (TCMC) brake pads may exhibit a...
- Paint stains after the removal of Rapgard?. The paint stains may appear to be under the clear coat but are...
- Replacement certification labels (the vinyl label installed on the driver door or door post) and VIN...
- TT: Vehicle control apps might not operate as expected at times due to preconditions (normal operating...
- Sloshing or splashing noise when turning at low speeds or when opening and closing doors
- TT: Some vehicles may experience an issue related to the DCM, the following information is consolidating...
- This bulletin includes basic procedures for performing an at battery rescue charge on high voltage (HV)...
- A battery in a stored vehicle is subject to conditions that can reduce its performance and service life
- During the manufacturing process, tires are mounted on the vehicle as matched sets to help reduce...
- An initialization procedure is required to activate the Entune? 3.0 App Suite Connect for Audio, Audio...
- TT: During recent discharged battery cases on vehicles equipped with LG DCM, there was confusion if a DCM...
- TT: HVAC drain tube is found to be blocked/clogged.
- This Service Bulletin provides updated non-electric water pump leak inspection and diagnostic tips for...
- 2021 model year Toyota vehicles are equipped with driver side floor mat retainers to secure the floor mat...
- Pre-Delivery Service (PDS) is a critical step in satisfying our new car customers
- TT: The Toyota Quality group is looking to better understand our customers expectation regarding vehicle...
- Obsolete notice
- TMNA Accessory Sales and Marketing has developed a Toyota paint protection film (PPF) decal (treated with...
- All 2021 model year Toyota vehicles are equipped with driver side floor mat retainers to secure the floor...
- TT: Repairing a 1234YF HVAC system on a gas powered (non-hybrid) Toyota vehicle may require additional...
- TT: Unibody vehicles commonly have lashing holes on the under body used for securing the vehicle during...
- TT: Due to the challenges caused by the COVID-19 virus threat, some dealers are experiencing reduced...
- TT: The blind spot monitor (BSM) sensor angle inspection is used to confirm that the BSM sensor is within...
- Replacement vin plates.
- Product general information.
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