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Service bulletins for the 2020 Toyota PRIUS

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.

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

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Bulletins, newest first
T-TT-0621-202020-09-14. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER; EQUIPMENT ADAPTIVE/MOBILITY. TT: Any HVAC repair requiring reassembly of the quick connect fitting between the suction hose sub-assembly and the suction pipe sub-assembly located at the top right of the engine compartment.
T-SB-0074-202020-09-14. 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-SB-0074-202020-09-14. 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 Rev2020-08-24. 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-0073-19 Obs2020-08-17. Service bulletin. STRUCTURE:BODY. OBSOLETE NOTICE July 31, 2020: This bulletin is no longer applicable and is now obsolete.
T-TT-0468-17 Rev2020-08-17. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. TT: HVAC drain tube is found to be blocked/clogged.
T-SB-0062-202020-08-03. 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-0613-202020-06-22. 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-0611-202020-06-22. 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_Rev2020-06-22. 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-0039-19 Obs2020-06-15. Service bulletin. ELECTRICAL SYSTEM. TSB: OBSOLETE NOTICE May 11, 2020: This bulletin is now obsolete. Please see T-SB-0047-20.
T-SB-0047-202020-06-15. Service bulletin. BACK OVER PREVENTION. TSB: SUPERSESSION NOTICE The information contained in this bulletin supersedes Service Bulletin No. T-SB-0039-19. The aforementioned bulletin is obsolete, and any printed versions should be discarded. Be sure to review the entire content of this service bulletin before proceeding. Some 2019 model year RAV4, RAV4 Hybrid and some 2018 ? 2020 model year Sienna vehicles equipped Audio Plus (version 1010) or Premium Audio (version 1010) or earlier may exhibit one or more of the following conditions: ?Toyota Apps fail to download ?Bluetooth® is unable to automatically connect after key cycle ?Abnormal microphone operation ?Sirius XM® antenna disconnection history Diagnostic Trouble Code (DTC) B15FE ?No outgoing voice during phone calls when using Apple CarPlay® ?Incoming calls incorrectly shown on the Multi-information Display (MID) when using Apple CarPlay® ?CAN networking DTC B1321 ?Volume inoperative after using Siri® ?Unable to adjust the treble audio setting ?Song information flickering ?Unable to select Sirius XM® music genre by voice recognition ?Noise when hanging up call on handset ?Transferred contacts do NOT match the number of handset contacts ?Sirius XM® sound slow to start ?Abnormal Toyota Apps and Scout Operation Some 2020 model year Prius, Prius Prime, some 2019 model year RAV4, RAV4 Hybrid, and some 2018 ? 2020 model year Sienna vehicles equipped with Audio Plus (version 1195), Premium Audio (version 1195) or Navigation (version 1035) or earlier may exhibit one or more of the following conditions:?Unable to play audio source after incoming call ?Software enhancements ?Intermittent rebooting ?Unable to register Bluetooth® devices from Bluetooth® Audio Mode ?Unable to pair Android? devices after Google? apps update ?Unable to access camera diagnosis system ?USB audio does not resume ?Intermittent Bluetooth® disconnection ?Abnormal voice recognition operation ?Phone call history does not
T-TT-0606-202020-05-11. 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_Rev2020-05-11. 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-TT-0605-202020-05-11. Service bulletin. POWER TRAIN. TT: Some 2019-2020 model year Prius vehicles may experience a whine/humming noise at 70-80 mph from the rear of the vehicle. This condition can occur on vehicles with less than 10,000 miles.
T-SB-0032-202020-05-11. 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-0236-17 Obs2020-05-11. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT. OBSOLETE NOTICE April 01, 2020: This bulletin is now obsolete. Please see T-SB-0031-20. Audio Head Unit Software Update (Denso)
T-SB-0031-202020-05-11. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT. TSB: SUPERSESSION NOTICE The information contained in this bulletin supersedes Service Bulletin No. T-SB-0236-17. Service Bulletin No. T-SB-0236-17 is obsolete and any printed versions should be discarded. Audio Head Unit Software Update (Denso)
Toyota Safety Re2020-04-20. Service bulletin. EQUIPMENT. Safety Recall and Service Campaign - Technician Certification Requirements
T-SB-0009-19_Rev2020-04-13. 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.
T-SB-0022-202020-04-13. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. TSB: Some 2016 ? 2020 model year Toyota vehicles may exhibit naturally occurring odors emitted from the HVAC system and/or related environmental factors. Follow the General Procedure in this bulletin to minimize the odors experienced.
T-SB-0008-19_Rev2020-04-13. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. TSB: An initialization procedure is required to activate the Entune? 3.0 App Suite Connect for Audio, Audio Plus, and Premium Audio head units before they are used for the first time on new vehicles. The initialization procedure may also be performed under other circumstances, such as following a head unit replacement or after the customer?s personal settings are erased. The initialization procedure requires between 3 and 15 minutes to complete, depending on file size, cellular connection speed, and other factors. Following the initialization procedure, individual Entune? 3.0 apps may periodically update through an over-the-air update system. Updates are optional or mandatory. The update procedure will take approximately 1 minute for each app requiring an update. Follow the Initialization/Update Procedure in this bulletin to perform the initialization and app updates.
T-SB-0236-17_Rev2020-03-30. Service bulletin. EQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM. TSB: Some 2017 ? 2018 model year Prius Prime vehicles equipped with Premium Audio (R10A5430) or earlier may exhibit one or more of the following conditions. Updated multimedia software is now available to address these conditions. Follow the Multimedia Software Update Procedure in this bulletin to install the latest software version.?No iPod® connection when connecting via USB ?Intermittent rebooting when connecting/disconnecting the iPod® USB ?Intermittent error screen when connecting/disconnecting the iPod® USB ?Navigation screen is locked after ACC/ON ?Internet radio is inoperative after connecting/disconnecting the iPod® USB ?Screen flick operation updates ?Navigation voice guidance is intermittently in the wrong language ?Audio does not mute when using Siri® Eyes Free ?Hands-free call is disconnected when another call is received?Voice cannot be heard for several seconds on the handset after the navigation unit is turned off?Sound settings reset after ACC OFF/ON?Volume control intermittently inoperative?Unable to switch between audio modes?Ending video playback concerns?Intermittent rebooting?Unable to connect to an Apple® device via USB?Navigation map inoperative after software update?Navigation map does not display?Screen will not dim?Abnormal operation after using Siri® Eyes Free?Abnormal operation when using BT Audio?My Car Log does not show mileage?Flickering screen?CAN date/time shift?Intermittent sound from JBL equipped vehicles?Backup camera stays on?Abnormal noise when during ACC ON?Cannot change songs when playing PANDORA®?Intermittent black screen?Intermittent rebooting?Delay when using navigation?Intermittently Rebooting?Intermittent screen flashing?Intermittent screen going blank?Abnormal phone touch tone operation during Apple CarPlay® (if equipped)?Sound settings intermittently reset?Unable to switch audio modes
Safety Recall an2020-03-30. Service bulletin. EQUIPMENT. Safety Recall and Service Campaign - Technician Certification Requirements
T-SB-0106-19_Rev2020-03-30. Service bulletin. STRUCTURE; ELECTRICAL SYSTEM. TSB: Pre-Delivery Service (PDS) is a critical step in satisfying our dealership's new car customers. Customer feedback indicates the following areas deserve special attention when performing PDS: -Careful inspection for paint chips/scratches and body dents/dings. -Proper operation of electrical accessories. -Interior cleanliness. -Proper function of mechanical systems. Customer retention and proper maintenance of vehicles are and have always been a major focus for Toyota. To help remind customers that regular service is essential to the proper maintenance of the vehicle, dealers are required to install a service reminder sticker before delivery. By doing this, customers will be reminded to return to your dealership for service. Your current service reminder sticker may be used. (See PDS Check Sheet ?Final Inspection and Cleaning.?) A new PDS Check Sheet has been developed for the 2020 model year Prius. Some check points have been added, expanded, or clarified.

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