# Over\-the\-air update TSB\-2025\-0004

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: Over\-the\-air update
- NHTSA id: 11024633
- Published by NHTSA: 2025\-10\-30
- Manufacturer's number: TSB\-2025\-0004
- Manufacturer's date: 2025\-10\-01
- Campaign id or software version: 3.4.0.A
- NHTSA component: FUEL/PROPULSION SYSTEM
- Manufacturer's system: Electrical: Software 3.4.0.A

## NHTSA's summary

Software release 3.4.0.A is an over\-the\-air \(OTA\) quality action to improve driver experience, vehicle performance, and vehicle diagnostics. Summary of Changes • Digital display firmware upgrade. • Improve digital display menu navigation. • Driver feedback for pending gear selection. • Improved cooling system diagnostics and performance. • Improved HV battery diagnostics. • Improved fault code reporting. • Improved efuse trip handing on MY2024 EPIC S/SL and MY2025 S/SL vehicles.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11024633-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11024633-9999.pdf)

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

## Components

Fuel system

## Vehicles listed

- 2019 to 2024 MOTIV E\-450 BEV CHASSIS
- 2019 to 2025 MOTIV E\-450 BEV CHASSIS SCHOOL BUS
- 2021 to 2024 MOTIV EPIC4 E\-450 BEV
- 2019 to 2024 MOTIV F\-53 BEV CHASSIS
- 2021 to 2023 MOTIV F\-53 BEV CHASSIS SCHOOL BUS
- 2020 MOTIV F\-53 SCHOOL BUS
- 2019 to 2025 MOTIV F\-59 BEV CHASSIS
- 2019 to 2020 MOTIV F\-59 BEV CHASSIS SCHOOL BUS
- 2022 to 2025 MOTIV F\-59 BEV CHASSIS SCHOOL BUS
- 2021 MOTIV F\-59 SCHOOL BUS

JSON: [/v1/bulletins/11024633](/v1/bulletins/11024633)

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