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Service bulletins for the 2018 Toyota Sienna

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.

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

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Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
T-SB-0047-19 Rev2020-09-14. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. TSB: Some 2018 ? 2020 model year Toyota vehicles equipped with a Premium Audio with Dynamic Navigation System require a Special Service Tool (SST) USB flash drive to update the map, points of interest, and system software. The SST is used with applicable vehicles to deliver the update; however, the process for generating license keys differs from previous generations. Before attempting to perform a map update, the head unit?s expiration date must be checked. If the expiration date is still valid, a license key may be generated without the use of an activation card number. Updating the maps without the use of an activation card number is considered an Embedded Navigation Update (refer to pg. 10) and performing this process does not extend the duration of telematic map services. If the head unit?s expiration date is expired, or is expiring within the next 90 days, it should be recommended to the customer to purchase an activation number. Utilizing an activation number will initiate a Dynamic Navigation Update (refer to pg. 4). This Dynamic Navigation Update will perform the Embedded Navigation Update and provide telematic map services for a period of two years from the day that the Dynamic Navigation Update is performed. Activation card numbers are provided in an activation card number pamphlet available through the normal parts ordering system.
T-SB-0046-20 Rev2020-09-14. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. TSB: Some 2018 ? 2019 model year Camry, Camry Hybrid, and Sienna vehicles equipped with Entune? 3.0 Audio Plus (version 1010) or Entune? 3.0 Premium Audio (version 1010) or earlier may exhibit one or more of the following conditions: ?Abnormal navigation operation. ?Screen freezing. ?Intermittent rebooting. ?Abnormal clock operation. ?Abnormal Apple CarPlay® operation. ?Echoing during Apple CarPlay® phone call. ?Abnormal Pandora® operation after answering WhatsApp phone call. ?Alexa® app inoperative when using iOS devices.
T-TT-0618-202020-08-24. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT; ELECTRICAL SYSTEM. TT: During the Phase 3 update to add Apple CarPlay® to 2018 model year Camry, Camry HV, and Sienna vehicle head units, if the procedure in the TSBs aren?t followed exactly as written, damage to the head unit may occur. Please take extra precautions when performing these TSBs.
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-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-0041-19 Obs2020-06-15. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. TSB: OBSOLETE NOTICE May 11, 2020: This bulletin is now obsolete. Please see T-SB-0046-20.
T-SB-0046-202020-06-15. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:SOFTWARE. TSB: SUPERSESSION NOTICE The information contained in this bulletin supersedes Service Bulletin No. T-SB-0041-19. 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 2018 ? 2019 model year Camry, Camry Hybrid, and Sienna vehicles equipped with Entune? 3.0 Audio Plus (version 1010) or Entune? 3.0 Premium Audio (version 1010) or earlier may exhibit one or more of the following conditions: ?Abnormal navigation operation ?Screen freezing ?Intermittent rebooting ?Abnormal clock operation ?Abnormal Apple CarPlay® operation ?Echoing during Apple CarPlay® phone call ?Abnormal Pandora® operation after answering WhatsApp phone call ?Alexa® app inoperative when using iOS devices Some 2018 ? 2019 model year Camry, Camry Hybrid, and Sienna vehicles equipped with Entune? 3.0 Audio Plus (version 1026) or Entune? 3.0 Premium Audio (version 1026, 1031) or earlier may exhibit one or more of the following conditions: ?Intermittent rebooting ?Navigation location inaccurate ?Too many or inconvenient U-turns ?Inaccurate speed categories ?Inaccurate search matches ?Flashing map update screen Some 2018 ? 2019 model year Camry, Camry Hybrid, and Sienna vehicles equipped with Entune? 3.0 Audio Plus (version 1050) or Entune? 3.0 Premium Audio (version 1050) or earlier may exhibit one or more of the following conditions: ?Intermittent rebooting ?Pixelated screen during phone calls when using Apple CarPlay® Some 2018 ? 2019 model year Camry, Camry Hybrid, and Sienna vehicles equipped with Entune? Premium Audio (Navigation version 1030 or 1040) or earlier may exhibit one or more of the following conditions: ?Navigation expiration pop-up that is more than a year in the future ?Destination ETA calculation doesn't account for time zone change or daylight-saving time A software update is now available to addre
T-SB-0044-202020-06-15. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. TSB: SUPERSESSION NOTICE The information contained in this bulletin supersedes Service Bulletin No. T-SB-0055-19. Service Bulletin No T-SB-0055-19 is obsolete and any printed versions should be discarded. The procedure in this Service Bulletin is a full reformat of the multimedia system. Failure to follow the procedure exactly as written may cause damage to the head unit. This reformatting changes the system from a Phase 2 to a Phase 3 system, which includes Apple CarPlay® and Amazon Alexa?. The reformat requires all linked files and folders extracted from the zip file to be placed onto the root directory of the USB flash drive, otherwise damage to the head unit will occur.
T-SB-0041-19_Rev2020-04-20. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. TSB: Some 2018 ? 2019 model year Camry, Camry Hybrid, and Sienna vehicles equipped with Entune? 3.0 Audio Plus (version 1010) or Entune? 3.0 Premium Audio (version 1010) or earlier may exhibit one or more of the following conditions: ?Abnormal navigation operation ?Screen freezing ?Intermittent rebooting ?Abnormal clock operation ?Abnormal Apple CarPlay® operation ?Echoing during Apple CarPlay® phone call ?Abnormal Pandora® operation after answering WhatsApp phone call ?Alexa® app inoperative when using iOS devices Some 2018 ? 2019 Camry, Camry Hybrid, and Sienna vehicles equipped with Entune? 3.0 Audio Plus (version 1026) or Entune? 3.0 Premium Audio (version 1026, 1031) or earlier may exhibit one or more of the following conditions: ?Intermittent rebooting ?Navigation location inaccurate ?Too many or inconvenient U-turns ?Inaccurate speed categories ?Inaccurate search matches ?Flashing map update screen Some 2018 ? 2019 Camry, Camry Hybrid, and Sienna vehicles equipped with Entune? 3.0 Audio Plus (version 1050) or Entune? 3.0 Premium Audio (version 1050) or earlier may exhibit one or more of the following conditions: ?Intermittent rebooting ?Pixelated screen during phone calls when using Apple CarPlay® A software update is now available to address these conditions. Follow the Software Update Procedure in this bulletin to update the software.
T-SB-0052-18_Rev2020-04-20. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Some 2018 model year Camry, Camry Hybrid, and Sienna Japan-produced vehicles equipped with Entune? 3.0 Audio (version 1000) or earlier may exhibit one or both of the following conditions: ?Bluetooth® continuously connects and disconnects ?Inoperative Entune? voice recognition Some 2018 model year Camry, Camry Hybrid, and Sienna vehicles equipped with Entune? 3.0 Audio (version 1021) or earlier may exhibit one or more of the following conditions: ?Unable to update radio ?Software Information screen displays in French ?Phone Number Favorites missing from Home screen ?Intermittent radio freezing ?Terms of Service has garbled characters ?Incorrect Entune? application is recommended for installation on the phone after Bluetooth® pairing ?Certain apps disappear when reordered Some 2018 model year Camry, Camry Hybrid, and Sienna vehicles equipped with Entune? 3.0 Audio (version 1022) or earlier may exhibit one or more of the following conditions: ?Intermittent ?There Are No Applications Available? pop-up ?Incoming voice is muted during phone call?Cancel button inoperative while downloading apps ?Voice recognition for iPod is inoperative after adding playlist to device ?Intermittent Bluetooth audio connection ?Software version does not update if the IG is turned off during software update ?Apps version is not displayed ?USB screen is not available ?Update history shows UTC date rather than time-zone-corrected date ?Update history is temporarily not displayed ?Abnormal voice recognition operation during hands-free phone call ?Incorrect phone book sorting ?Difficult to read the DCM status when dark theme selected ?Entune? update pop-up appears after downloading and installing Entune? A software update is now available to address these conditions, while providing other functional and security enhancements.
T-SB-0041-19_Rev2020-04-13. Service bulletin. ELECTRICAL SYSTEM. TSB: Some 2018 ? 2019 model year Camry, Camry Hybrid, and Sienna vehicles equipped with Entune? 3.0 Audio Plus (version 1010) or Entune? 3.0 Premium Audio (version 1010) or earlier may exhibit one or more of the following conditions: ?Abnormal navigation operation ?Screen freezing ?Intermittent rebooting ?Abnormal clock operation ?Abnormal Apple CarPlay® operation ?Echoing during Apple CarPlay® phone call ?Abnormal Pandora® operation after answering WhatsApp phone call ?Alexa® app inoperative when using iOS devices ?Intermittent rebooting ?Navigation location inaccurate ?Too many or inconvenient U-turns ?Inaccurate speed categories ?Inaccurate search matches ?Flashing map update screen A software update is now available to address these conditions. Follow the Software Update Procedure in this bulletin to update the software.
T-SB-0039-19_Rev2020-03-30. Service bulletin. PARKING BRAKE; BACK OVER PREVENTION; ELECTRICAL SYSTEM; WHEELS; STEERING. Some 2019 model year RAV4, RAV4 Hybrid and some 2019 ? 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 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 doesn?t resume ?Intermittent Bluetooth® disconnection ?Abnormal voice recognition operation?Phone call history does not update ?Bluetooth® loses connection after USB connection is made ?Navigation inoperative ?Microphone disconnected pop-up message ?Clock not displayed on the map screen ?Intermittent phone ringing with no incoming phone call ?Clock format changes from 12 ? 24 hours intermittently ?Screen intermittently goes blank ?Sound changes from one speake
T-TT-0442-17_Rev2019-12-16. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). TT: Safety Connect is a vehicle option which requires a subscription fee for the system to be active after the initial trial period. Once the subscription has expired the DCM (Telematics Transceiver) will be in an inactive state. In some instances, a DCM may need to be replaced even though the customer is not using the service. If registration of the replacement DCM part is attempted using the Techstream utility after the account has become inactive, the registration will fail, and messages such as ?ATX webserver is Down? or ?ATX error? will be displayed.
T-TT-0573-192019-10-15. Service bulletin. ELECTRICAL SYSTEM. TT: Some customers may experience a call failure when attempting to call a conference call number that has been saved in their phonebook (ex: ?8005550122,,,1.,2;;;2#?). This issue is caused by changes to the Bluetooth in the iOS 13 update and may be resolved in a future iOS update.
T-TT-0566-192019-09-16. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. TT: Some vehicles may display an error message that displays "New software is not compatible with the system. Contact your dealer." after the Display Control Unit (DCU) or navigation Multimedia Extension Unit (MEU) is replaced if the Phase 3 (CarPlay) retrofit is not applied prior to replacement. Panasonic exchange MEU and DCU parts are now being shipped with Phase 3 software installed.
T-SB-0055-19_Rev2019-09-16. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL. TSB: REVISION NOTICE August 09, 2019 Rev2: ? Step 25 of the Software Update Procedure section has been updated with a Note. May 28, 2019 Rev1: ? The Introduction and Software Update Procedure sections have been updated and the Software Download and Extraction Procedure has been added. Any previous printed versions of this bulletin should be discarded. The procedure in this Service Bulletin is a full reformat of the multimedia system. Failure to follow the procedure exactly as written may cause damage to the head unit. This reformatting changes the system from a Phase 2 to a Phase 3 system, which includes Apple CarPlay® and Amazon Alexa?. The reformat requires all linked files and folders extracted from the zip file to be placed onto the root directory of the USB flash drive, otherwise damage to the head unit will occur. NOTE Performing this update may change certain head unit operation conditions. For a full list of changes, see System Limitations and FAQ.
T-TT-0553-192019-09-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. 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
ZJC-Toyota POL192019-09-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; POWER TRAIN. Customer Support Program Bulletin: Toyota has received reports indicating potential symptoms, such as a whine noise from the transmission while driving, harsh shifting, reduced power, and master warning light/check engine light illumination, in the subject vehicles that are equipped with a model UA80 transmission. There is a possibility that a washer tab, designed to prevent the loosening of a nut inside the affected transmissions, was not sufficiently bent during assembly. This could lead to the nut loosening and, over time, lead to the symptoms described above.
T-SB-0134-16-Rev2019-09-03. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM; ENGINE. TSB: REVISION NOTICE July 01, 2019 Rev2: ? Applicability has been updated to 2019 ? 2020 model year Toyota vehicles. ? The Techstream Preparation and Process Overview sections have been updated. October 30, 2017 Rev1: ? Applicability has been updated to include 2018 model year vehicles. Any previous printed versions of this bulletin should be discarded. SUPERSESSION NOTICE The information contained in this bulletin supersedes SB No. T-SB-0012-13. Service Bulletin No. T-SB-0012-13 is obsolete and any printed versions should be discarded. Be sure to review the entire content of this bulletin before proceeding. Flash reprogramming allows the Electronic Control Unit (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. NOTE ECU is a Toyota term used to describe integrated computerized devices responsible for managing the operation of a system or subsystem. For the purposes of this bulletin, the term ?ECU? is used as a generic label for the following SAE J1930 standard references: ? Powertrain Control Module (PCM) ? Engine Control Module (ECM) ? Transmission Control Module (TCM) ? Any other Toyota specific control unit
T-TT-0549-192019-07-15. Service bulletin. ELECTRICAL SYSTEM. TT: The new 12V Battery Warranty Testers (DSS-5000 & DCA-8000) require certain information to generate a test result and warranty code. Below is an explanation of what information is required when testing a 12V battery on the new Warranty Battery Testers.
T-SB-0055-19_Rev2019-06-24. Service bulletin. EQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM. TSB: Entune? 3.0 Audio is now available with additional features such as Apple CarPlay® and Amazon Alexa? for 2018 model year Camry, Camry Hybrid, and Sienna vehicles. Follow the Software Update Procedure in this bulletin to install these new features. NOTE Performing this update may change certain head unit operation conditions. For a full list of changes, see System Limitations and FAQ.
T-SB-0057-19_Rev2019-06-24. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. TSB: REVISION NOTICE May 24, 2019 Rev1: ? The entire bulletin has been updated. Any previous printed versions of this bulletin should be discarded. The procedure in this Service Bulletin is a full reformat of the multimedia system. Failure to follow the procedure exactly as written may cause damage to the head unit. This reformatting changes the system from a Phase 2 to a Phase 3 system, which includes Apple CarPlay® and Amazon Alexa?. This reformat requires all linked files and folders extracted from the zip file to be placed onto the root directory of the USB flash drive, otherwise damage to the head unit will occur. NOTE ? This procedure is a two-part process that includes an automatic file download from the USB flash drive once it is inserted into the USB port. Once the headlight flash step is performed, the system will begin the installation of the downloaded files. ? Performing this update may change certain head unit operation conditions. For a full list of changes, see System Limitations and FAQ. NOTICE Failure to follow the Software Update Procedure exactly as written may cause damage to the head unit.
T-SB-0055-192019-06-24. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. TSB: Entune? 3.0 Audio is now available with additional features such as Apple CarPlay® and Amazon Alexa? for 2018 model year Camry, Camry Hybrid, and Sienna vehicles. Follow the Software Update Procedure in this bulletin to install these new features. NOTE Performing this update may change certain head unit operation conditions. For a full list of changes, see System Limitations and FAQ.

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