Genesis Electrified G80 RG3

The ICCU converts high-voltage power to charge the 12V auxiliary battery, similar to an alternator in a combustion car. When it fails, the 12V system gradually drains, triggering warning lights, reduced power mode, and eventually complete loss of drive. This affects the entire E-GMP family (Ioniq 5, Ioniq 6, EV6, GV60, Electrified GV70, and Electrified G80). Hyundai issued multiple recalls covering 2023-2024 Electrified G80 models, with an expanded recall in late 2024 after some repaired vehicles experienced repeat failures. The fix involves ICCU inspection, fuse replacement, software update, and if needed, complete ICCU replacement. Covered under recall at no cost. Out-of-warranty ICCU replacement costs approximately €1,500-3,500 including parts and labor.

The most commonly reported Electrified G80 problem. A software logic error causes the HD Radio module's data to overwrite display memory, leading to instrument cluster and infotainment screens going black for up to ten seconds or repeatedly rebooting. This affects the speedometer, warning lights, and navigation. A recall covering 2022-2026 Genesis models (approximately 84,000 vehicles) addresses this with a dealer-installed software update. The temporary workaround is holding the Map and Setup buttons simultaneously to force a reboot. If the head unit hardware is damaged, out-of-warranty replacement runs €800-2,500.

Multiple owners report the 12V battery dying after one to two weeks of sitting. The Electrified G80 draws current for connected services, smart key communication, and various standby systems. A failed OTA update can worsen the drain. Solutions include keeping the car plugged in (which maintains the 12V system via the ICCU), disabling connected services when parked for extended periods, or using a trickle charger on the 12V battery. Replacement 12V batteries cost €200-350, but the underlying parasitic draw may require a software update or ICCU check to resolve permanently.

Some owners report Highway Driving Assist disengaging unexpectedly, overly sensitive lane-departure warnings, and forward collision warnings at low speeds with no actual obstacle. In isolated cases, the regenerative braking system applies full regen for several seconds without driver input. These issues are typically addressed through software updates rather than hardware replacement. Sensor cleaning and recalibration cost €150-600 at a dealer. The ADAS cameras and radar modules themselves are robust, and the issue is primarily software-related.

The Electrified G80 weighs approximately 2,325 kg, which is significantly heavier than its combustion counterpart. This weight, combined with the instant torque of electric motors, causes faster tire wear, particularly on the inner edges of the rear tires. Owners report needing replacement after 25,000-35,000 km rather than the expected 40,000-50,000 km. A proper four-wheel alignment after purchase and regular rotation helps, but the weight-induced wear is inherent to the design. A full set of 245/45R19 front and 275/40R19 rear tires costs approximately €800-1,200, plus €200-400 for alignment.

A TSB (25-BE-014G) addresses an issue where the horn becomes inoperable due to moisture entering the horizontally mounted assembly. The fix involves replacing the horns and remounting them vertically, plus adding an extension cable for the left-side horn. This is a relatively minor issue but affects safety if the horn is needed. Parts and labor run €150-400, and the fix is straightforward at any Genesis-equipped dealer.