# Service bulletin H0X\_Technical In

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: 10131683
- Published by NHTSA: 2018\-04\-02
- Manufacturer's number: H0X\_Technical In
- Manufacturer's date: 2018\-01\-10
- NHTSA component: ELECTRICAL SYSTEM:SOFTWARE

## NHTSA's summary

Technical Instructions: EV Control ECU Software Update. Certain 2016\-2017 Mirai

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10131683-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10131683-0001.pdf)

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

## Components

Electrical system, Software

## Vehicles listed

- 2016 to 2017 TOYOTA MIRAI

## Other bulletins for the same vehicles and component

- [K0P\_19TE12\-TI\-Up](/bulletins/10179783.md), 2020-09-14, Service bulletin: EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE. TI: TECHNICAL INSTRUCTIONS FOR LIMITED SERVICE CAMPAIGN K0P CUSTOMER SUPPORT PROGRAM 19TE12 SAFETY CONNECT SYSTEM ? VEHICLE LOCATION INACCURATE
- [T\-TT\-0392\-16 Rev](/bulletins/10140568.md), 2018-06-11, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. TT: Some customers may experience Bluetooth connection issues after updating the Android Operating System to 5.x.x \(Lollipop\) or later.
- [T\-TT\-0385\-16](/bulletins/10134281.md), 2018-04-23, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Tech Tip: This Tech Tip is being provided to bring attention to the new location of the Entune/NAV/Map Update and Upgrade USB Directory. Click on the TIS tab, Diagnostics tab, Telematics tab, and the document is now located under the reference documents sections. This change has occurred to help speed up the updating process of this document.
- [TSB\-0012\-13 Rev2](/bulletins/10134128.md), 2018-04-23, Service bulletin: ENGINE; ELECTRICAL SYSTEM:SOFTWARE. TSB: Flash reprogramming allows the ECU software to be updated without replacing the ECU. Flash calibration updates for specific vehicle models/ECUs are released as field\-fix procedures described in individual Service Bulletins. This bulletin details the Techstream ECU flash reprogramming process and outlines use of the Technical Information System \(TIS\) and the Calibration Update Wizard \(CUW\). Flash calibration updates can only be applied to the vehicle/ECU combination for which they are intended. ECUs have internal security that will not allow them to be programmed with another ECU?s information.
- [T\-SB\-0012\-13 Rev](/bulletins/10132930.md), 2018-04-02, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. TSB: OBSOLETE NOTICE: September 14, 2016: This bulletin is now obsolete. Please see T\-SB\-0134\-16.
- [H0X\_Dealer Daily](/bulletins/10131682.md), 2018-04-02, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Dealer Daily Message: Special Service Campaign H0X Certain 2016 ? 2017 Model Year Toyota Mirai EV Control ECU Software Update ? Special Service Campaign H0X Dealer Letter and Technical Instructions now available on TIS.
- [H0X\_Dealer Packa](/bulletins/10131681.md), 2018-04-02, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Dealer Package: The subject vehicles are voluntarily equipped with an event data recorder \(EDR\). The EDR only collects, stores, and allows retrieval of vehicle event data, including crash events. It DOES NOT control the operation of the vehicle or any crash safety systems. Due to a software error, the EDR data for ?Accelerator Pedal, % Full? will show a constant value of ?0,? and will not record another accelerator open position at the time an event is recorded. No other system uses this software output data.
- [H0X\_Region Lette](/bulletins/10131680.md), 2018-04-02, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Region Letter: The subject vehicles are voluntarily equipped with an event data recorder \(EDR\). The EDR only collects, stores, and allows retrieval of vehicle event data, including crash events. It DOES NOT control the operation of the vehicle or any crash safety systems. Due to a software error, the EDR data for ?Accelerator Pedal, % Full? will show a constant value of ?0,? and will not record another accelerator open position at the time an event is recorded. No other system uses this software output data.
- [H0X\_Dealer Email](/bulletins/10131679.md), 2018-04-02, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Dealer Email: The subject vehicles are voluntarily equipped with an event data recorder \(EDR\). The EDR only collects, stores, and allows retrieval of vehicle event data, including crash events. It DOES NOT control the operation of the vehicle or any crash safety systems. Due to a software error, the EDR data for ?Accelerator Pedal, % Full? will show a constant value of ?0,? and will not record another accelerator open position at the time an event is recorded. No other system uses this software output data.
- [H0X\_Region Email](/bulletins/10131678.md), 2018-04-02, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Region Email: The subject vehicles are voluntarily equipped with an event data recorder \(EDR\). The EDR only collects, stores, and allows retrieval of vehicle event data, including crash events. It DOES NOT control the operation of the vehicle or any crash safety systems. Due to a software error, the EDR data for ?Accelerator Pedal, % Full? will show a constant value of ?0,? and will not record another accelerator open position at the time an event is recorded. No other system uses this software output data.

JSON: [/v1/bulletins/10131683](/v1/bulletins/10131683)

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