12V Battery Drain/Failure

The 12V battery is susceptible to drain issues, often linked to ICCU problems. A failing 12V battery can render the vehicle inoperable, even if the main high-voltage battery is charged. Estimated repair cost: $300 - $700.

Propulsion System Charging Module Software

Software glitches within the charging control modules have been a focus of recalls. These can affect charging performance and overall power management. Estimated repair cost: $150 - $300.

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2023 Hyundai Ioniq 5 Maintenance guide

Name: Maintenance dataset for 2023 Hyundai Ioniq 5
Creator: Carfocal

v1.0Updated May 30, 2026Ryan Davis4 Sources Analyzed

MAINTENANCE SUMMARY

The 2023 Hyundai Ioniq 5 presents a below-average reliability verdict, largely due to significant electrical system failures, particularly with the ICCU and 12V battery, which can cause sudden power loss. With 426 complaints and 13 recalls, owners should prioritize monitoring these systems.

View Critical Issue: Integrated Charging Control Unit (ICCU) Failure

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Reliability Score

Est. Annual Maintenance Cost

$200 - $400

TSBs & Recalls

5 TSBs | 13 Recalls

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Key Takeaways

The 2023 Hyundai Ioniq 5 has a below-average reliability verdict, primarily due to electrical system issues.
The Integrated Charging Control Unit (ICCU) and 12V battery are prone to failure, potentially causing sudden power loss.

2 more takeaways unlock below

Critical service intervals

Common failure analysis

Symptoms and prevention guidance