TSB: TOYOTA 4RUNNER, AVALON, HIGHLANDER, HIGHLANDER HYBRID, PRIUS, PRIUS V, SEQUOIA, SIENNA, TACOMA, TUNDRA, YARIS (2016–2019)

Bulletin T-TT-0600-20 Rev — November 19, 2020

Bulletin Details

Bulletin IDT-TT-0600-20 Rev
ManufacturerTOYOTA
Models4RUNNER, AVALON, HIGHLANDER, HIGHLANDER HYBRID, PRIUS, PRIUS V, SEQUOIA, SIENNA, TACOMA, TUNDRA, YARIS
Model Years2016–2019
Date IssuedNovember 19, 2020
Date Added to NHTSADecember 13, 2021
ComponentELECTRICAL SYSTEM:SOFTWARE
Vehicles Affected103 combinations

What is a TSB?

A Technical Service Bulletin is a document issued by the vehicle manufacturer to inform dealership technicians about a known issue and the recommended repair procedure. TSBs are not mandatory recalls — they serve as repair guidance for common problems.

If your vehicle has this issue, bring this bulletin ID to your dealer. If under warranty, the repair should be covered at no cost.

Summary

TT: Some customers may experience echoing on the line calling the vehicle when using Bluetooth Hands Free. This is caused by the phone Hands Free volume being too low. These settings may need to be reapplied any time the phone is paired to

Affected Vehicles

MakeModelYearComponent
TOYOTA 4RUNNER 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA 4RUNNER 2019 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA 4RUNNER 2019 353000 EQUIPMENT:ELECTRICAL
TOYOTA HIGHLANDER 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA HIGHLANDER 2019 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA HIGHLANDER 2019 353000 EQUIPMENT:ELECTRICAL
TOYOTA HIGHLANDER HYBRID 2019 353000 EQUIPMENT:ELECTRICAL
TOYOTA PRIUS 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA PRIUS 2019 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA PRIUS 2019 353000 EQUIPMENT:ELECTRICAL
TOYOTA SEQUOIA 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA SEQUOIA 2019 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA SEQUOIA 2019 353000 EQUIPMENT:ELECTRICAL
TOYOTA SIENNA 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA SIENNA 2019 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA SIENNA 2019 353000 EQUIPMENT:ELECTRICAL
TOYOTA TACOMA 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA TACOMA 2019 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA TACOMA 2019 353000 EQUIPMENT:ELECTRICAL
TOYOTA TUNDRA 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA TUNDRA 2019 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA TUNDRA 2019 353000 EQUIPMENT:ELECTRICAL
TOYOTA 4RUNNER 2018 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA 4RUNNER 2018 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA 4RUNNER 2018 353000 EQUIPMENT:ELECTRICAL
TOYOTA AVALON 2018 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA AVALON 2018 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA AVALON 2018 353000 EQUIPMENT:ELECTRICAL
TOYOTA HIGHLANDER 2018 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA HIGHLANDER 2018 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA HIGHLANDER 2018 353000 EQUIPMENT:ELECTRICAL
TOYOTA HIGHLANDER HYBRID 2018 353000 EQUIPMENT:ELECTRICAL
TOYOTA PRIUS 2018 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA PRIUS 2018 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA PRIUS 2018 353000 EQUIPMENT:ELECTRICAL
TOYOTA PRIUS V 2018 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA PRIUS V 2018 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA PRIUS V 2018 353000 EQUIPMENT:ELECTRICAL
TOYOTA SEQUOIA 2018 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA SEQUOIA 2018 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA SEQUOIA 2018 353000 EQUIPMENT:ELECTRICAL
TOYOTA SIENNA 2018 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA SIENNA 2018 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA SIENNA 2018 353000 EQUIPMENT:ELECTRICAL
TOYOTA TACOMA 2018 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA TACOMA 2018 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA TACOMA 2018 353000 EQUIPMENT:ELECTRICAL
TOYOTA TUNDRA 2018 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA TUNDRA 2018 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA TUNDRA 2018 353000 EQUIPMENT:ELECTRICAL
TOYOTA YARIS 2018 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA YARIS 2018 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA YARIS 2018 353000 EQUIPMENT:ELECTRICAL
TOYOTA 4RUNNER 2017 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA 4RUNNER 2017 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA 4RUNNER 2017 353000 EQUIPMENT:ELECTRICAL
TOYOTA AVALON 2017 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA AVALON 2017 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA AVALON 2017 353000 EQUIPMENT:ELECTRICAL
TOYOTA HIGHLANDER 2017 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA HIGHLANDER 2017 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA HIGHLANDER 2017 353000 EQUIPMENT:ELECTRICAL
TOYOTA HIGHLANDER HYBRID 2017 353000 EQUIPMENT:ELECTRICAL
TOYOTA PRIUS 2017 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA PRIUS 2017 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA PRIUS 2017 353000 EQUIPMENT:ELECTRICAL
TOYOTA PRIUS V 2017 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA PRIUS V 2017 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA PRIUS V 2017 353000 EQUIPMENT:ELECTRICAL
TOYOTA SEQUOIA 2017 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA SEQUOIA 2017 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA SEQUOIA 2017 353000 EQUIPMENT:ELECTRICAL
TOYOTA SIENNA 2017 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA SIENNA 2017 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA SIENNA 2017 353000 EQUIPMENT:ELECTRICAL
TOYOTA TACOMA 2017 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA TACOMA 2017 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA TACOMA 2017 353000 EQUIPMENT:ELECTRICAL
TOYOTA TUNDRA 2017 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA TUNDRA 2017 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA TUNDRA 2017 353000 EQUIPMENT:ELECTRICAL
TOYOTA HIGHLANDER 2016 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA HIGHLANDER 2016 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA HIGHLANDER 2016 353000 EQUIPMENT:ELECTRICAL
TOYOTA HIGHLANDER HYBRID 2016 353000 EQUIPMENT:ELECTRICAL
TOYOTA PRIUS 2016 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA PRIUS 2016 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA PRIUS 2016 353000 EQUIPMENT:ELECTRICAL
TOYOTA PRIUS V 2016 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA PRIUS V 2016 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA PRIUS V 2016 353000 EQUIPMENT:ELECTRICAL
TOYOTA SEQUOIA 2016 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA SEQUOIA 2016 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA SEQUOIA 2016 353000 EQUIPMENT:ELECTRICAL
TOYOTA SIENNA 2016 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA SIENNA 2016 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA SIENNA 2016 353000 EQUIPMENT:ELECTRICAL
TOYOTA TACOMA 2016 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA TACOMA 2016 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA TACOMA 2016 353000 EQUIPMENT:ELECTRICAL
TOYOTA TUNDRA 2016 118000 ELECTRICAL SYSTEM:SOFTWARE
TOYOTA TUNDRA 2016 353630 EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI
TOYOTA TUNDRA 2016 353000 EQUIPMENT:ELECTRICAL

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What Should You Do?

If your vehicle is affected by this TSB, contact your authorized TOYOTA dealer. Bring this bulletin ID (T-TT-0600-20 Rev) when you visit. If under warranty, the repair should be free. If your warranty has expired, ask about goodwill coverage — manufacturers sometimes cover TSB-related repairs beyond the warranty period.

Frequently Asked Questions

A recall is a mandatory safety fix — the manufacturer must repair every affected vehicle for free. A TSB is an advisory document that describes a known issue and the recommended fix, but repairs are not required. However, some TSBs eventually lead to recalls if the issue poses a safety risk. TSBs are generally issued for quality or performance problems, while recalls address safety defects.

If your vehicle is still under the manufacturer's warranty, TSB-related repairs are typically covered at no cost. If your warranty has expired, you can ask the dealer about goodwill or customer assistance programs. Many manufacturers will cover or partially cover repairs for well-known issues, especially if the TSB was issued recently or affects a large number of vehicles.

Check the make, model, and model year listed above against your vehicle. If they match, this bulletin likely applies. However, TSBs may only affect vehicles with specific production dates, VIN ranges, or configurations. Your dealer can confirm by entering your VIN into their service system, which will show all applicable TSBs and recalls.

This data comes from the National Highway Traffic Safety Administration (NHTSA). Manufacturers are required to submit copies of all communications (including TSBs) sent to their dealers to NHTSA. The agency makes this data publicly available as part of its vehicle safety monitoring program.