2023 Toyota Corolla technical service bulletins
124 technical service bulletins and manufacturer communications cover the 2023 Toyota Corolla.
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated without replacing the...
- Obsolete notice
- Condition in which a musty odor is present
- Obsolete notice
- Vibration or rattle noise from the right-hand engine mounting insulator sub-assembly
- MIL ON condition with one or more of the following Diagnostic Trouble Codes (DTCs) upon cold soak start up...
- 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...
- Rattling noise condition from the forward recognition camera cover
- Obsolete notice
- The Immobilizer and Smart Key Reset is a feature that allows the registration of new keys when all master...
- Obsolete notice
- Some 2021 – 2025 model year Toyota vehicles may require the download and installation of vehicle specific...
- When certain vehicle ECUs are replaced, the ECU Security Key must be written in order for that ECU to...
- Obsolete notice
- 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
- Some 2022 model year Avalon and Avalon Hybrid, 2022 – 2024 model year Camry, Camry Hybrid, Corolla,...
- Condition in which the remote climate system is inoperative after the vehicle has been off for three hours...
- Obsolete notice
- MIL ON condition with one or both of the following Diagnostic Trouble Codes (DTCs) present: •P11EA00 –...
- Oil leak that originates between the oil pan sub-assembly and the stiffening crankcase assembly.
- Condition in which a musty odor is present
- Obsolete notice
- 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...
- The Data Communication Module (DCM), which supports Toyota Connected Services in your vehicle, may not...
- Technical instructions for special service campaign 24TC03 data communicaton module (DCM) update certain...
- Toyota vehicles are currently protected with RapgardTM protective film designed to protect the horizontal...
- Technical instructions for special service campaign 24TC01 brake actuator assembly (skid control ECU...
- The subject vehicles are equipped with a straight-type shift lever, including a Brake (B) shift position
- MIL ON condition with Diagnostic Trouble Code (DTC) P11EA00 (Bank 1 Air-Fuel Ratio Imbalance (Port)) present
- Some 2021 – 2024 model year Toyota vehicles may require the download and installation of vehicle specific...
- Customers have expressed concerns about the performance of Qi Wireless Chargers
- When certain vehicle ECUs are replaced, the ECU Security Key must be written in order for that ECU to...
- 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...
- One or more of the following conditions: ?Milky/discolored engine oil
- TT: Some 2022/2023 Japan built (VIN JTD) Corolla/Corolla HV sedan vehicles may have a rattle noise coming...
- Tt: MIL
- Vibration or rattle noise from the right-hand engine mounting insulator sub-assembly
- DP: The subject vehicles are equipped with Toyota Safety Sense (TSS) which consists of several driving...
- RL: The subject vehicles are equipped with Toyota Safety Sense (TSS) which consists of several driving...
- Ti: technical instructions for 23TC01 toyota safety sense inoperative intermittently
- 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...
- Ti: technical instructions for special service campaign 23TC02 brake ECU reprogram certain 2023 model year...
- DP: Due to certain programming in the brake ECU, under certain conditions, DTC U0100 is stored and cannot...
- RL: Due to certain programming in the brake ECU, under certain conditions, DTC U0100 is stored and cannot...
- Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated without replacing the...
- Some 2023 ? 2024 model year Toyota vehicles use hub bolts in place of studs/nuts to fasten the wheels to...
- TT: When setting up the Toyota Audio Multimedia (21MM) user profile, if the QR code is not working please...
- DP: The front license plate bracket provided with the vehicle has clips that potentially interfere with...
- TT: Some customers may complain of the suspension feeling stiff while driving or going over bumps
- TT: Some Model Year 2018-2023 vehicles equipped with A25A-FKS/FXS or M20A-FKS/FXS engines may display the...
- Some 2021 ? 2023 model year Toyota vehicles may require the download and installation of vehicle specific...
- One or more of the following conditions: ?Head unit rebooting
- TT: Some 19CY LG DCM equipped vehicles may not be able to complete the firmware update due to not having...
- 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...
- Obsolete notice
- Obsolete notice
- Pre-Delivery Service (PDS) is a critical step in satisfying our new car customers
- Hybrid vehicles are equipped with two types of batteries: ?Hybrid vehicle (HV) battery
- 2023 model year Toyota vehicles are equipped with driver side floor mat retainers to secure the floor mat...
- Long-term or off-site storage requires special care to keep vehicles factory fresh and ready for delivery
- Pre-Delivery Service (PDS) is a critical step in satisfying our new car customers
- TT: To improve customer support of telematics connected services features, additional resources have been...
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