# Service campaign 25\-01\-056H TSB

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: 11022374
- Published by NHTSA: 2025\-09\-03
- Manufacturer's number: 25\-01\-056H TSB
- Manufacturer's date: 2025\-08\-29
- Campaign id or software version: TDW
- NHTSA component: POWER TRAIN

## NHTSA's summary

Certain 2025MY IONIQ 5 \(NEA EV\) vehicles are equipped with a Motor and Reduction Gear Motor\-Gear Drive Unit \(MGDU\) differential gear assemblies that are missing a wave washer. This can cause the MGDU housing to make noise. Follow the procedure outlined in this TSB to replace the Front or Rear Motor \& Reduction Gear assembly.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11022374-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11022374-9999.pdf)

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

## Components

Transmission and driveline

## Vehicles listed

- 2025 HYUNDAI IONIQ 5

## Other bulletins for the same vehicles and component

- [26\-01\-029H TSB](/bulletins/11030326.md), 2026-03-30, Warranty extension: POWER TRAIN. Certain IONIQ 5 \(NEA EV\) and IONIQ 9 \(ME1A EV\) vehicles \(affected VINs listed below\) may exhibit a high\-frequency noise from the front motor area during low\-speed deceleration. This bulletin provides instructions to replace the front motor and gear reduction assembly.

JSON: [/v1/bulletins/11022374](/v1/bulletins/11022374)

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