# Service bulletin 23\-01\-067H\-1

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: 10244987
- Published by NHTSA: 2023\-11\-07
- Manufacturer's number: 23\-01\-067H\-1
- Manufacturer's date: 2023\-10\-09
- NHTSA component: PARKING BRAKE; POWER TRAIN

## NHTSA's summary

Updated Vehicle Control Unit \(VCU\) software relating to the brake light logic for regenerative braking on certain IONIQ 5 Electric \(NE1\) \& IONIQ 6 \(CE1\) vehicles is now available to improve the vehicle’s system logic and performance. An “Owner’s Manual Supplement” leaflet is also to be provided to 2022MY IONIQ 5 vehicle customers to explain the change \& application of the Electronic Parking Brake \(EPB\) system of their vehicle.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10244987-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10244987-9999.pdf)

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

## Components

Brakes, Transmission and driveline, Parking brake

## Vehicles listed

- 2022 to 2023 HYUNDAI IONIQ 5
- 2023 HYUNDAI IONIQ 6

## Recalls for the same vehicles and component

- [22V324000](/recalls/nhtsa/22V324000.md), 2022-05-11: PARKING BRAKE:ELECTRICAL:CONTROL MODULE:SOFTWARE

## Other bulletins for the same vehicles and component

- [23\-01\-067H\-1](/bulletins/10244986.md), 2023-11-07, Service bulletin: POWER TRAIN; SERVICE BRAKES, AIR; PARKING BRAKE. This updated Vehicle Control Unit \(VCU\) software package includes the following: • Brake light logic update for regenerative braking. • i\-Pedal mode operation logic update. • 12V battery saver logic update allows charging from EV Battery as low as 10% SOC when parked. The Ioniq 5 update includes these earlier items that Ioniq 6 had included from start of production: • EPB \(Electronic Parking Brake\) auto engagement when shift into Park/auto disengagement shift out of Park when shifting to D or R while brake pedal is engaged. • DTE \(Distance to Empty\) strategy. • Snow road surface performance. • Air conditioning performance during AC slow charging. • Enhance charging sequence.
- [23\-01\-067H](/bulletins/10241807.md), 2023-09-05, Service bulletin: PARKING BRAKE:ELECTRICAL; ELECTRICAL SYSTEM; PARKING BRAKE; SERVICE BRAKES, HYDRAULIC; SERVICE BRAKES, AIR. This updated Vehicle Control Unit \(VCU\) software package includes the following: • Brake light logic update for regenerative braking. • Enhance i\-Pedal mode operation. • EPB \(Electronic Parking Brake\) auto engagement when shift into Park/auto disengagement shift out of Park when shifting to D or R while brake pedal is engaged. • DTE \(Distance to Empty\) strategy. • Snow road surface performance. • Air conditioning performance during AC slow charging. • Enhance charging sequence. An “Owner’s Manual Supplement” leaflet is to be provided to 2022MY vehicle customers to explain the change to the Electronic Parking Brake \(EPB\) system. \(NOTE: 2023MY vehicle Owner’s Manual already contains the EPB supplement content\).
- [23\-01\-039H](/bulletins/10238394.md), 2023-07-01, Service bulletin: PARKING BRAKE; POWER TRAIN; ELECTRICAL SYSTEM. This bulletin applies the following continuous improvements from a Vehicle Control Unit \(VCU\) Software Update. An “Owner’s Manual Supplement” leaflet is to be provided to 2022MY vehicle customers to explain the change it makes to the Electronic Parking Brake \(EPB\) system. \(NOTE: 2023MY vehicle Owner’s Manual already contains the EPB supplement content\). • Enhance i\-Pedal mode operation. • EPB \(Electronic Parking Brake\) auto engagement when shift into Park/auto disengagement shift out of Park when shifting to D or R while brake pedal is engaged. • DTE \(Distance to Empty\) strategy. • Snow road surface performance. • Air conditioning performance during AC slow charging. • Enhance charging sequence.

JSON: [/v1/bulletins/10244987](/v1/bulletins/10244987)

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