# Service campaign S4437\- 202502

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 campaign
- NHTSA id: 11014713
- Published by NHTSA: 2025\-03\-03
- Manufacturer's number: S4437\- 202502
- Manufacturer's date: 2025\-02\-28
- NHTSA component: ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM

## NHTSA's summary

Mack Trucks has identified that certain MMDE model trucks may encounter charging issues when using a Heliox brand charger.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11014713-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11014713-9999.pdf)

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

## Components

Electrical system, Fuel system

## Vehicles listed

- 2024 to 2025 MACK MD \(ELECTRIC\)

JSON: [/v1/bulletins/11014713](/v1/bulletins/11014713)

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