Why Some Kia EV9 Owners Are Facing Charging Problems

Owners of Kia's new EV9 electric SUV are reporting problems with charging their vehicles and issues with the battery systems that keep them running. The Verge has documented accounts from multiple owners describing charging failures and other electrical problems. These issues point to gaps in how the auto industry supports electric vehicle owners when things go wrong.

The EV9, which launched in 2023, uses two different battery systems. One is a small 12-volt battery that powers basic vehicle functions like lights and windows. The other is a large high-voltage battery that propels the car. Owners report the 12-volt battery failing unexpectedly and the main battery pack charging erratically—sometimes slowly, sometimes not at all.

Both problems trace back to a single component called the Integrated Charging Control Unit, or ICCU. Think of it as the traffic controller between the charging station and the vehicle's battery. When it fails, the vehicle either won't charge, charges unpredictably, or stops working altogether.

The Problem Extends Across Kia's Electric Lineup

The EV9's charging issues are not isolated. Kia's parent company, Hyundai Motor Group, has seen the same ICCU problems affect other electric vehicles from both Kia and Hyundai brands. This suggests the issue stems from a shared component used across multiple models rather than a defect unique to the EV9.

The ICCU is critical to how an electric car charges. When it malfunctions, the vehicle loses the ability to communicate with charging stations and manage power flow to its battery. The result can range from a car that won't charge at all to one that charges unpredictably, making owners uncertain how far they can actually drive.

Repairs Are Taking Time

Several EV9 owners report long waits to get their vehicles repaired and difficulty getting clear updates from Kia dealerships. The auto industry is facing a broader challenge: manufacturers are building electric vehicles faster than they're training technicians to fix them.

Diagnosing and repairing battery and charging systems requires specialized knowledge and equipment that not every dealership has yet. Add in the fact that replacement parts for new electric vehicles often take weeks to arrive, and repair times stretch even longer. This same pattern emerged decades ago when smartphones first became complex—early adopters often waited longer for repairs than they expected because service networks weren't yet mature enough to handle the new technology.

Kia Has Started Pushing Software Updates

Kia has released an over-the-air software update for some 2024 EV9 models to improve AC charging performance. The update represents an attempt to fix some charging issues without requiring a physical repair. Software updates can address problems caused by incorrect control logic, but they cannot fix problems caused by a component that has physically failed.

This distinction matters. If the ICCU's problem is purely in how it has been programmed, a software update can help. If the component itself is broken, the update won't solve the issue.

Previous Recalls Show a Wider Pattern

The EV9 has faced other recalls that shed light on what's happening. Kia recalled roughly 12,400 EV9 vehicles for a software problem in the parking system that could affect braking performance. Separately, Hyundai Motor Group recalled nearly 170,000 electric vehicles worldwide for software failures in their charging control units.

These recalls reveal that electric vehicles combine many complex systems—charging management, parking assistance, brake control—and making them all work together is proving difficult. Each new system adds the possibility of something going wrong.

Why This Matters

The broader point is this: electric vehicles are newer technology than traditional cars, and the infrastructure to support and repair them is still catching up. When the EV9 has charging problems, owners expect a quick fix the way they'd expect a quick solution if their gas pump failed. But electric vehicles involve more variables—weather effects on battery performance, compatibility with different charging networks, and complex software managing everything. When problems arise, technicians often need specialized knowledge to diagnose them.

The EV9 is meant to compete with vehicles like Tesla's Model X and serve as Kia's flagship electric offering. Problems with charging and batteries have an outsized impact on how customers view the brand and whether they'll trust electric vehicles.

For traditional automakers shifting from gasoline engines to electric motors, the transition is exposing new challenges. Kia and its competitors bring decades of manufacturing expertise, but electric powertrains create failure modes and service requirements that are fundamentally different from conventional vehicles. How well these companies resolve these problems will shape customer confidence in electric vehicles for years to come.