Service bulletins for the 2020 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.
256 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
| T-SB-0074-20 | 2020-09-14. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN; EQUIPMENT; ELECTRICAL SYSTEM. TSB: Some 2003 ? 2020 model year Prius, Prius C, Prius V; 2006 ? 2019 model year Highlander Hybrid Vehicle; 2007 ? 2020 Camry Hybrid Vehicle; 2013 ? 2020 model year Avalon Hybrid Vehicle; 2016 ? 2020 model year Mirai and RAV4 Hybrid Vehicle; and 2020 model year Corolla Hybrid Vehicles may exhibit a MIL ON condition with Diagnostic Trouble Codes (DTCs) P0A80/P1AC000 and/or P0A7F/P1A8000 stored due to dust or debris buildup in the HV battery cooling fan and/or HV cooling filter. Follow the procedure in this bulletin to address this condition. |
|---|---|
| T-TT-0615-20 Rev | 2020-09-14. Service bulletin. EQUIPMENT; ENGINE. TT: The Toyota Quality group is looking to better understand our customers expectation regarding vehicle drivability. Specifically, we are looking at vehicle surge/hesitation condition (inconsistent acceleration) and would like to recover detailed customer voice and vehicle data. |
| T-SB-0074-20 | 2020-09-14. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN. TSB: Some 2003 ? 2020 model year Prius, Prius C, Prius V; 2006 ? 2019 model year Highlander Hybrid Vehicle; 2007 ? 2020 Camry Hybrid Vehicle; 2013 ? 2020 model year Avalon Hybrid Vehicle; 2016 ? 2020 model year Mirai and RAV4 Hybrid Vehicle; and 2020 model year Corolla Hybrid Vehicles may exhibit a MIL ON condition with Diagnostic Trouble Codes (DTCs) P0A80/P1AC000 and/or P0A7F/P1A8000 stored due to dust or debris buildup in the HV battery cooling fan and/or HV cooling filter. Follow the procedure in this bulletin to address this condition. |
| T-TT-0553-19 Rev | 2020-08-24. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. TT: The new DCA-8000 Diagnostic Charger may cause your facility?s Ground Fault Circuit Interrupter (GFCI) breaker to trip. A GFCI breaker can be tripped for various reasons, one of the reasons may be related to the DCA-8000. We are investigating this issue to determine the root cause. Other reasons the GFCI breaker may trip ?Circuit demand is too high for GFCI rating ?Worn out GFCI internal contacts ?Improper installation or wiring of GFCI breaker |
| T-SB-0160-19 Obs | 2020-08-17. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. TSB: OBSOLETE NOTICE July 23, 2020: This bulletin is now obsolete. Please see T-SB-0071-20. |
| T-SB-0071-20 | 2020-08-17. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. TSB: SUPERSESSION NOTICE The information contained in this bulletin supersedes Service Bulletin No. T-SB-0160-19. Service Bulletin No. T-SB-0160-19 is obsolete and any printed versions should be discarded. Some 2019 ? 2020 model year Toyota vehicles equipped with Entune? Audio (version 1007), Entune? Audio Plus (version 1011), or Entune? Premium Audio (version 1011) or earlier may exhibit one or more of the following conditions: ?Phone does not auto-connect on startup. ?Intermittent black screen. ?Apple CarPlay® home screen widget turns white when USB flash drive is disconnected. ?Abnormal phone book sorting. ?Unable to see DCM Status when in dark red or dark blue modes. ?XM no signal banner appears at all times. ??Check antenna,? ?ID Displaying,? or ?Seeking? always displays on XM mode. ?Unable to switch Bluetooth® devices. ?Apps button inactive in the voice recognition hint screen when using Apple CarPlay®. ?Incorrect Spanish translations. ?Voice recognition is not canceled during a phone call. ?Low Easy Speak volume. ?Voice recognition ?Web Search? is inoperative. ?Entune? apps are inoperative and ?When it is safe and legal to do so, please ensure your Entune? App Suite application is running and logged in on your phone? pop-up appears. ?Download screen appears even though nothing is being downloaded. ?Intermittent partially white screen. ?Screen intermittently locked. A software update is now available to address these conditions |
| T-SB-0073-19 Obs | 2020-08-17. Service bulletin. STRUCTURE:BODY. OBSOLETE NOTICE July 31, 2020: This bulletin is no longer applicable and is now obsolete. |
| T-TT-0468-17 Rev | 2020-08-17. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. TT: HVAC drain tube is found to be blocked/clogged. |
| T-TT-0552-19 Rev | 2020-08-03. Service bulletin. ENGINE AND ENGINE COOLING. TT: Repairing a 1234YF HVAC system on a gas powered (non-hybrid) Toyota vehicle may require additional compressor oil to complete the repairs. The various 1234YF compressor oils (ND-12, PS-D1, or VC100YF) are available through the Toyota Approved Dealer Equipment website. |
| T-SB-0062-20 | 2020-08-03. Service bulletin. ELECTRICAL SYSTEM. TSB: Some 2004 ? 2020 model year Hybrid vehicles may exhibit an excessive buildup of dust, lint, or debris in the HV battery intake filter or cooling fan. The condition could reduce the efficiency of the HV battery cooling system. Perform the procedures outlined in this bulletin to address this condition. |
| T-TT-0615-20 Rev | 2020-07-27. Service bulletin. ENGINE. TT: The Toyota Quality group is looking to better understand our customers expectation regarding vehicle drivability. Specifically, we are looking at vehicle surge/hesitation condition (inconsistent acceleration) and would like to recover detailed customer voice and vehicle data. |
| T-SB-0021-20 Rev | 2020-07-27. Service bulletin. EQUIPMENT:ELECTRICAL. TSB: Some 2020 model year Camry, Camry Hybrid, Corolla Hatchback, RAV4, and RAV4 Hybrid vehicles may exhibit one or more of the following conditions: ?DTC B15A804 is present in current or history. ?Red SOS LED stays on after bulb check. ?Toyota App does not accept the activation code. ?Toyota App is inoperative. ?SOS call center does not receive the vehicle?s location in a timely manner. ?Toyota App shows an error 42 when trying to execute a command. ?Unable to remote start the vehicle with the key fob (if equipped). ?Unable to subscribe to remote services. ?Unable to activate Wi-Fi. ?Destination Assist is inoperative. A firmware update is now available to address these conditions. Follow the Firmware Update Procedure in this bulletin to update the firmware |
| T-SB-0064-18 Rev | 2020-07-27. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; 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 and can never be reused. Another feature, Add/Remove Key, is also available. Once a key is removed, it can never be reused. |
| T-TT-0613-20 | 2020-06-22. Service bulletin. STRUCTURE; EQUIPMENT. TT: Unibody vehicles commonly have lashing holes on the under body used for securing the vehicle during logistics -The lashing holes are intended to be plugged during Pre-Delivery Service (PDS) -The plugs are: oRequired for anti-corrosion purposes oUsually located in the glove box prior to PDS -The number of plugs may be different based on model and production location |
| T-TT-0611-20 | 2020-06-22. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. TT: To assist with the early detection and early resolution of audio related concerns, it may be requested as part of the remanufactured head unit return to recover MMR data from the head unit. The following steps are instructions on how to retrieve the data from the system and are only to be used when requested by audio suppliers, FTS, and/or FPEs. |
| T-TT-0516-18_Rev | 2020-06-22. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. TT: The microphone circuit passes through the DCM before reaching the radio/navigation system. To simplify the diagnosis of the microphone, Safety Connect SOS button lights, and DCM (Data Communication Module/telematics transceiver) inoperative conditions, refer to the procedure below to prevent unnecessary parts replacement. |
| T-SB-0160-19_Rev | 2020-06-15. Service bulletin. ELECTRICAL SYSTEM. TSB: SUPERSESSION NOTICE The information contained in this bulletin supersedes Service Bulletin No. T-SB-0143-18. Service Bulletin No. T-SB-0143-18 is obsolete and any printed versions should be discarded. Some 2019 model year Avalon and Avalon Hybrid vehicles equipped with Entune? Audio Plus (version 1002) or Entune? Premium Audio (version 1002) or earlier may exhibit one or more of the following conditions: ?Incorrect GPS date and time ?Abnormal Bluetooth® operation ?Abnormal Wi-Fi operation G49?Microphone remains on screen after voice recognition failure ?Unable to see text with headlights on (text is same color as background) Some 2019 ? 2020 model year Toyota vehicles equipped with Entune? Audio (version 1007), Entune? Audio Plus (version 1011), or Entune? Premium Audio (version 1011) or earlier may exhibit one or more of the following conditions: ?Phone does not auto-connect on startup ?Intermittent black screen?Apple CarPlay® home screen widget turns white when USB flash drive is disconnected ?Abnormal phone book sorting ?Unable to see DCM Status when in dark red or dark blue modes ?XM no signal banner appears at all times ??Check antenna,? ?ID Displaying,? or ?Seeking? always displays on XM mode ?Unable to switch Bluetooth® devices ?Apps button inactive in the voice recognition hint screen when using Apple CarPlay® ?Incorrect Spanish translations ?Voice recognition is not canceled during a phone call ?Low Easy Speak volume ?Voice recognition ?Web Search? is inoperative ?Entune? apps are inoperative and ?When it is safe and legal to do so, please ensure your Entune? App Suite application is running and logged in on your phone? pop-up appears ?Amazon Alexa inoperative on iOS devices |
| T-TT-0607-20 | 2020-06-15. Service bulletin. STRUCTURE. TT: Some grades of Japan built (VIN beginning with ?J?) non-HV Corollas no longer have a hood seal (PN ? 53381-12290) installed on the radiator support cover. |
| T-TT-0606-20 | 2020-05-11. Service bulletin. EQUIPMENT. TT: Due to the challenges caused by the COVID-19 virus threat, some dealers are experiencing reduced traffic into their stores and causing dealer stock to age. Due to this situation, dealers are reminded and recommended to follow the Long-Term Vehicle Storage Guidelines outlined in T-SB-0009-19 and other Service Bulletin publications to ensure customers receive their vehicles in a fresh and well maintained condition Please ensure that both Sales and Service at your dealership are aware of these guidelines and are following the recommended maintenance and storage processes and procedures to ensure the highest customer satisfaction with their new vehicle purchase. |
| T-TT-0537-19_Rev | 2020-05-11. Service bulletin. VISIBILITY; LANE DEPARTURE. TT: The blind spot monitor (BSM) sensor angle inspection is used to confirm that the BSM sensor is within the specified angle before performing axis beam adjustment. When used in conjunction with the repair manual, these BSM tips leverage SSTs and readily available tools to support sensor angle confirmation in varying shop environments. |
| T-SB-0032-20 | 2020-05-11. Service bulletin. EQUIPMENT. TSB: SUPERSESSION NOTICE The information contained in this bulletin supersedes Service Bulletin Nos. PG021-88, PG015-89, PG0015-90, PG002-91, PG002-93, PG005-97, PG007-01, PG007-07, PG006-01, PG004-97, T-SB-0144-08, and T-SB-0304-17. The aforementioned bulletins are obsolete, and any printed versions should be discarded. Replacement certification labels (the vinyl label installed on the driver door or door post) and VIN plates (the metal plate riveted to dashboard) (see Figure 1) for most 1979 ? 2020 model year vehicles may be available provided the requests meet the criteria listed in this Service Bulletin. Follow the Procurement Procedure in this bulletin to request a replacement certification label or VIN plate. |
| T-SB-0021-20_Rev | 2020-05-11. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. TSB: Some 2020 model year Camry, Camry Hybrid, Corolla Hatchback, RAV4, and RAV4 Hybrid vehicles may exhibit a condition in which the Toyota app does not accept the activation code and/or becomes inoperative, and/or the SOS call center does not receive the vehicle?s location data in a timely manner. |
| Toyota Safety Re | 2020-04-20. Service bulletin. EQUIPMENT. Safety Recall and Service Campaign - Technician Certification Requirements |
| Toyota Safety Re | 2020-04-20. Service bulletin. EQUIPMENT. Safety Recall and Service Campaign - Technician Certification Requirements |
| T-SB-0009-19_Rev | 2020-04-13. Service bulletin. EQUIPMENT; SERVICE BRAKES; ELECTRICAL SYSTEM. TSB: Long-term or off-site storage requires special care to keep vehicles factory fresh and ready for delivery. The following guidelines should be performed to minimize vehicle component/part degradation due to extended vehicle storage conditions. Long-term storage can affect a vehicle?s systems and components. Any problems that are found should be corrected immediately. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.