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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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10244986
Published by NHTSA2023-11-07
Manufacturer's number23-01-067H-1
Manufacturer's date2023-10-09
NHTSA componentPOWER TRAIN; SERVICE BRAKES, AIR; PARKING BRAKE

NHTSA's summary

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.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Brakes, Transmission and driveline, Parking brake

Vehicles listed
HYUNDAI IONIQ 52022, 2023
HYUNDAI IONIQ 62023

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
22V3240002022-05-11. PARKING BRAKE:ELECTRICAL:CONTROL MODULE:SOFTWARE

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
23-01-067H-12023-11-07. Service bulletin. 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.
23-01-067H2023-09-05. Service bulletin. 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).
23-01-039H2023-07-01. Service bulletin. 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.