TSB: TOYOTA AVALON, CAMRY, COROLLA, HIGHLANDER, LAND CRUISER, MIRAI, PRIUS, PRIUS C, PRIUS V, RAV4 HV, RAV4 HYBRID, SEQUOIA, SIENNA, TACOMA, TUNDRA (2014–2017)

Bulletin T-TT-0377-15_Rev — November 28, 2017

Bulletin Details

Bulletin IDT-TT-0377-15_Rev
ManufacturerTOYOTA
ModelsAVALON, CAMRY, COROLLA, HIGHLANDER, LAND CRUISER, MIRAI, PRIUS, PRIUS C, PRIUS V, RAV4 HV, RAV4 HYBRID, SEQUOIA, SIENNA, TACOMA, TUNDRA
Model Years2014–2017
Date IssuedNovember 28, 2017
Date Added to NHTSAApril 23, 2018
ComponentEQUIPMENT ADAPTIVE/MOBILITY
Vehicles Affected42 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 poor outgoing Bluetooth sound quality, this can occur for various reasons. Current multimedia systems are designed with the ability to adjust Bluetooth sound quality to compensate for Echo or excessive back

Affected Vehicles

MakeModelYearComponent
TOYOTA AVALON 2017 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA CAMRY 2017 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA COROLLA 2017 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA HIGHLANDER 2017 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA LAND CRUISER 2017 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA PRIUS 2017 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA PRIUS C 2017 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA PRIUS V 2017 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA RAV4 HYBRID 2017 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA SEQUOIA 2017 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA SIENNA 2017 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA TACOMA 2017 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA TUNDRA 2017 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA AVALON 2016 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA CAMRY 2016 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA COROLLA 2016 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA HIGHLANDER 2016 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA LAND CRUISER 2016 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA MIRAI 2016 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA PRIUS 2016 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA PRIUS C 2016 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA PRIUS V 2016 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA RAV4 HV 2016 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA SEQUOIA 2016 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA SIENNA 2016 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA TACOMA 2016 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA TUNDRA 2016 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA AVALON 2015 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA CAMRY 2015 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA COROLLA 2015 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA HIGHLANDER 2015 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA PRIUS C 2015 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA PRIUS V 2015 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA SEQUOIA 2015 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA SIENNA 2015 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA TACOMA 2015 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA TUNDRA 2015 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA CAMRY 2014 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA COROLLA 2014 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA HIGHLANDER 2014 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA TACOMA 2014 356000 EQUIPMENT ADAPTIVE/MOBILITY
TOYOTA TUNDRA 2014 356000 EQUIPMENT ADAPTIVE/MOBILITY

Related TOYOTA Recalls

CampaignModelYearComponentSummary
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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-0377-15_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.