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Service bulletin T-TT-0470-17_Rev

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10170727
Published by NHTSA2020-01-27
Manufacturer's numberT-TT-0470-17_Rev
Manufacturer's date2019-12-05
NHTSA componentSEAT BELTS; BACK OVER PREVENTION

NHTSA's summary

TT: All grades of 2018-2020 model year Mirai, Sienna, CH-R, and 2020 model year Land Cruiser, Prius, and Prius Prime vehicles are not compatible with Toyota Remote Connect app features. The Toyota Remote Connect mobile app lets you lock and unlock doors, start the engine, find your vehicle in a parking lot, and monitor guest drivers.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Driver assistance, Seat belts, Backup camera

Vehicles listed
TOYOTA C-HR2018, 2019, 2020
TOYOTA LAND CRUISER2020
TOYOTA MIRAI2018, 2019, 2020
TOYOTA PRIUS2020
TOYOTA PRIUS PRIME2020 (the catalog's model; the bulletin names a series or trim of it)
TOYOTA SIENNA2018, 2019, 2020

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
T-SB-0115-22 Rev2023-04-17. Service bulletin. TSB: Some 2019 ? 2022 model year Avalon, 2018 ? 2023 model year Camry, 2017 ? 2022 model year Highlander, and 2017 ? 2020 model year Sienna vehicles equipped with a 2GR-FKS engine may exhibit a knocking noise from the vacuum pump at idle.
TTT0636202022-06-21. Service bulletin. TT: Some Toyota vehicles installed with Toyota Complete Maintenance Care (TCMC) brake pads may exhibit a groan or squeak noise in various driving conditions
T-SB-0088-212021-11-15. Service bulletin. TSB: For proper calibration of the millimeter wave radar sensor, the vehicle and radar target must be on a level surface with a consistent plane. If a level surface with a consistent plane is not available, use the Floor Slope Compensation Procedure in this service bulletin in conjunction with the appropriate model and model year Repair Manual instructions when adjusting the millimeter wave radar sensor.
T-TT-0599-20 Rev2021-04-19. Service bulletin. TT: Vehicle control apps might not operate as expected at times due to preconditions (normal operating parameters) not being established, vehicle settings and/or network/cellular coverage concerns.
T-TT-0636-20 Rev2021-04-19. Service bulletin. TT: Some Toyota vehicles installed with Toyota Complete Maintenance Care (TCMC) brake pads may exhibit a groan or squeak noise in various driving conditions.
T-TT-0599-20 Rev2021-02-16. Service bulletin. TT: Vehicle control apps might not operate as expected at times due to preconditions (normal operating parameters) not being established, vehicle settings and/or network/cellular coverage concerns.
T-TT-0636-202021-02-16. Service bulletin. TT: Some Toyota vehicles installed with Toyota Complete Maintenance Care (TCMC) brake pads may exhibit a groan or squeak noise in various driving conditions.
T-SB-0119-202021-01-25. Service bulletin. 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. Follow the process in this bulletin to perform the update.
T-SB-0047-20 Rev2020-11-30. Service bulletin. TSB: Some 2019 model year RAV4 and RAV4 Hybrid and 2018 ? 2020 model year Sienna vehicles equipped with 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 show 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 and Prius Prime, 2019 model year RAV4 and RAV4 Hybrid, and 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 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.
T-SB-0047-202020-06-15. Service bulletin. 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