TSB: TOYOTA C-HR, LAND CRUISER, MIRAI, PRIUS, PRIUS PRIME, SIENNA (2018–2020)

Bulletin T-TT-0470-17_Rev — December 4, 2018

Bulletin Details

Bulletin IDT-TT-0470-17_Rev
ManufacturerTOYOTA
ModelsC-HR, LAND CRUISER, MIRAI, PRIUS, PRIUS PRIME, SIENNA
Model Years2018–2020
Date IssuedDecember 4, 2018
Date Added to NHTSAJanuary 27, 2020
ComponentSEAT BELTS
Vehicles Affected34 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: All grades of 2018-2019 model year Mirai and Sienna and 2019 model year CH-R vehicles are not compatible with Entune? 3.0 Remote Connect app features. The Toyota Entune? 3.0 Remote Connect mobile app lets you lock and unlock doors, star

Affected Vehicles

MakeModelYearComponent
TOYOTA C-HR 2020 280000 BACK OVER PREVENTION
TOYOTA C-HR 2020 150000 SEAT BELTS
TOYOTA LAND CRUISER 2020 150000 SEAT BELTS
TOYOTA LAND CRUISER 2020 280000 BACK OVER PREVENTION
TOYOTA MIRAI 2020 280000 BACK OVER PREVENTION
TOYOTA MIRAI 2020 150000 SEAT BELTS
TOYOTA PRIUS 2020 280000 BACK OVER PREVENTION
TOYOTA PRIUS 2020 150000 SEAT BELTS
TOYOTA PRIUS PRIME 2020 280000 BACK OVER PREVENTION
TOYOTA PRIUS PRIME 2020 150000 SEAT BELTS
TOYOTA SIENNA 2020 280000 BACK OVER PREVENTION
TOYOTA SIENNA 2020 150000 SEAT BELTS
TOYOTA C-HR 2019 353000 EQUIPMENT:ELECTRICAL
TOYOTA C-HR 2019 350000 EQUIPMENT
TOYOTA C-HR 2019 280000 BACK OVER PREVENTION
TOYOTA C-HR 2019 150000 SEAT BELTS
TOYOTA MIRAI 2019 150000 SEAT BELTS
TOYOTA MIRAI 2019 353000 EQUIPMENT:ELECTRICAL
TOYOTA MIRAI 2019 350000 EQUIPMENT
TOYOTA MIRAI 2019 280000 BACK OVER PREVENTION
TOYOTA SIENNA 2019 350000 EQUIPMENT
TOYOTA SIENNA 2019 280000 BACK OVER PREVENTION
TOYOTA SIENNA 2019 150000 SEAT BELTS
TOYOTA SIENNA 2019 353000 EQUIPMENT:ELECTRICAL
TOYOTA C-HR 2018 280000 BACK OVER PREVENTION
TOYOTA C-HR 2018 150000 SEAT BELTS
TOYOTA MIRAI 2018 353000 EQUIPMENT:ELECTRICAL
TOYOTA MIRAI 2018 350000 EQUIPMENT
TOYOTA MIRAI 2018 280000 BACK OVER PREVENTION
TOYOTA MIRAI 2018 150000 SEAT BELTS
TOYOTA SIENNA 2018 280000 BACK OVER PREVENTION
TOYOTA SIENNA 2018 150000 SEAT BELTS
TOYOTA SIENNA 2018 353000 EQUIPMENT:ELECTRICAL
TOYOTA SIENNA 2018 350000 EQUIPMENT

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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-0470-17_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.