# Service bulletin 22TC04

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.

- Type: Service bulletin
- NHTSA id: 10214362
- Published by NHTSA: 2022\-06\-21
- Manufacturer's number: 22TC04
- Manufacturer's date: 2022\-04\-15
- NHTSA component: ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:SOFTWARE

## NHTSA's summary

TI: TECHNICAL INSTRUCTIONS SPECIAL SERVICE CAMPAIGN 22TC04 SOFTWARE UPDATE FOR EV CONTROL COMPUTER CERTAIN 2021 MODEL YEAR MIRAI VEHICLES

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10214362-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10214362-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system, Software

## Vehicles listed

- 2021 TOYOTA MIRAI

## Other bulletins for the same vehicles and component

- [T\-SB\-0039\-20 Rev](/bulletins/10183284.md), 2020-11-30, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. TSB: An initialization procedure is required to activate the Entune? 3.0 App Suite Connect for Audio, Audio Plus, and Premium Audio head units before they are used for the first time on new vehicles. The initialization procedure may also be performed under other circumstances, such as following a head unit replacement or after the customer?s personal settings are erased. The initialization procedure requires between 3 and 15 minutes to complete, depending on file size, cellular connection speed, and other factors. Following the initialization procedure, individual Entune? 3.0 apps may periodically update through an over\-the\-air update system. Updates are either optional or mandatory. The update procedure will take approximately 1 minute for each app requiring an update. Follow the Initialization/Update Procedure in this bulletin to perform the initialization and app updates.
- [T\-SB\-0039\-20 Rev](/bulletins/10178536.md), 2020-08-17, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. TSB: An initialization procedure is required to activate the Entune? 3.0 App Suite Connect for Audio, Audio Plus, and Premium Audio head units before they are used for the first time on new vehicles. The initialization procedure may also be performed under other circumstances, such as following a head unit replacement or after the customer?s personal settings are erased. The initialization procedure requires between 3 and 15 minutes to complete, depending on file size, cellular connection speed, and other factors. Following the initialization procedure, individual Entune? 3.0 apps may periodically update through an over\-the\-air update system. Updates are either optional or mandatory. The update procedure will take approximately 1 minute for each app requiring an update. Follow the Initialization/Update Procedure in this bulletin to perform the initialization and app updates.
- [T\-SB\-0064\-18 Rev](/bulletins/10177579.md), 2020-07-27, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:ANTI\-THEFT DEVICES. TSB: The Immobilizer and Smart Key Reset is a feature that allows the registration of new keys when all master keys are lost. Once the system is reset, all previously registered keys will be erased and can never be reused. Another feature, Add/Remove Key, is also available. Once a key is removed, it can never be reused.

JSON: [/v1/bulletins/10214362](/v1/bulletins/10214362)

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