Two ICCU recalls, first fix failed. Ioniq 5 power loss or 12V drain issues may qualify for a California buyback. Free case review.
You bought a Hyundai Ioniq 5 to lead the EV transition — a sleek, fast-charging electric crossover that promised a new relationship with driving. What thousands of owners got instead was a terrifying surprise: a warning light, a message that reads 'Power is Limited,' and a car that is slowly dying beneath them while they are still moving. This is not a rare software glitch. It is a safety defect in the Integrated Charging Control Unit (ICCU) — a component found in every 2022, 2023, and 2024 Ioniq 5 ever built — that Hyundai's own engineers had documented in warranty returns as early as October 2022. Hyundai did not file a recall until March 2024, seventeen months later. That first recall (24V-204) covered 69,316 Ioniq 5 vehicles and offered a software-only fix. It did not work. Eight months later, in November 2024, Hyundai issued a second, expanded recall (24V-868) covering 100,880 Ioniq 5 vehicles — including many owners who had already been to the dealer for the first recall. The ICCU's internal MOSFET component keeps failing, opening a high-voltage fuse, and cutting off the 12V auxiliary battery charger. As the 12V battery drains, the vehicle enters a forced fail-safe mode: it progressively slows down, warns you with escalating alerts, and ultimately shuts off all drive power while you are on the road. Steering and brakes continue to function, but you may have as little as 22 minutes to get off the road once the fault triggers. California's Song-Beverly Consumer Warranty Act was designed for exactly this pattern: a dangerous defect, multiple failed repair attempts, and a manufacturer who waited too long to act. If your Ioniq 5 has been back to the dealer for ICCU-related symptoms, you may already meet the threshold for a buyback or replacement.
The issues owners report most, ranked by severity — each one verified against a cited NHTSA source.
Car warns 'Power is Limited' with audible chime; vehicle progressively slows and eventually loses all propulsion while driving; cannot charge 12V auxiliary battery via ICCU; multiple warning lights illuminate; car may become completely inoperative mid-drive
Vehicle rolls away from parked position on a grade; parking mechanism fails to hold car in place when driver has shifted to Park; no warning before rollaway
Sudden, unexpected loss of all drive power while driving; vehicle decelerates and cannot accelerate; possible clunking or mechanical noise at moment of failure
Vehicle stops charging on Level 2 (240V AC) charger before reaching target state of charge; charging session ends unexpectedly overnight; charger coupler temperature fault warning; must re-plug to resume charging
Brake lights do not illuminate when driver is decelerating using regenerative braking or one-pedal driving (i-Pedal mode); vehicles behind have no warning of deceleration; Electronic Parking Brake does not auto-engage when shifting to Park
'Power is Limited' warning message with turtle icon on instrument cluster; vehicle enters limp mode with severely reduced power output; DTC P0A2F may be present; may be confused with or occur alongside ICCU-related power reduction
A settled Margarian Law case on this exact model, published with the actual settlement math.
Open any defect for the symptoms and why it matters for a California lemon-law claim. Each is tied to a cited NHTSA source.
Car warns 'Power is Limited' with audible chime; vehicle progressively slows and eventually loses all propulsion while driving; cannot charge 12V auxiliary battery via ICCU; multiple warning lights illuminate; car may become completely inoperative mid-drive
Dominant lemon-law defect. Affects all 2022-2024 Ioniq 5 (100,880 units). Two recalls filed (24V204000 Mar 2024; 24V868000 Nov 2024) because the first software-only fix was insufficient — vehicles already remedied under 24V204 also require the 24V868 remedy. Hyundai had warranty-return evidence of ICCU failures by Oct 2022 but did not file until Mar 2024 (17-month delay). 397+ NHTSA complaints on 2022 MY alone; 376+ on 2023 MY. Multiple repair attempts on the same defect system strongly supports a lemon-law claim. Hyundai subsequently extended ICCU warranty to 15 years / 180,000 miles.
GDS scan for DTC P1A9096. If absent: ICCU software update (soft-start logic). If present: replace ICCU, replace fuse (in that order), then software update. All repairs under safety recall 24V868000, free of charge.
Vehicle rolls away from parked position on a grade; parking mechanism fails to hold car in place when driver has shifted to Park; no warning before rollaway
Safety defect with rollaway risk. 4 confirmed rollaway incidents in South Korea at time of filing. 10,729 units recalled. Relevant if owner experienced rollaway or required multiple visits for SCU-related shift/park issues.
SCU software update performed by dealer, free of charge. Interim: use Electronic Parking Brake (EPB) when parking until remedy completed.
Sudden, unexpected loss of all drive power while driving; vehicle decelerates and cannot accelerate; possible clunking or mechanical noise at moment of failure
Small population (206 Ioniq 5 units) but complete and sudden loss of drive power is a serious safety event. Relevant for 2023 owners with matching production dates who experienced unexpected propulsion loss.
Rear inner driveshaft replacement by dealer, free of charge.
Vehicle stops charging on Level 2 (240V AC) charger before reaching target state of charge; charging session ends unexpectedly overnight; charger coupler temperature fault warning; must re-plug to resume charging
Persistent across multiple TSB iterations (TSB 23-EV-003H then 24-01-051H), indicating Hyundai did not resolve on first repair attempt. Owners with documented charging failures and multiple dealer visits may have a substantial-impairment claim if charging is their primary or sole refueling method.
VCMS software update (TSB 24-01-051H / Service Campaign 9B5) enabling charging self-restart. Performed by dealer, free of charge.
Brake lights do not illuminate when driver is decelerating using regenerative braking or one-pedal driving (i-Pedal mode); vehicles behind have no warning of deceleration; Electronic Parking Brake does not auto-engage when shifting to Park
Brake lights failing during deceleration is a significant safety and regulatory defect (FMVSS 108 compliance risk). Owners who were rear-ended or had near-misses while using regenerative braking may have an enhanced safety claim. EPB non-engagement adds to park/rollaway risk documented in Recall 22V324000.
VCU software update (TSB 23-01-067H / 23-01-067H-1) correcting brake light logic for regenerative braking and i-Pedal mode. 2022 MY owners also receive Owner's Manual Supplement. Performed by certified Ioniq dealers, free of charge. Also addressed by TSB 23-01-039H (EPB auto-engagement).
'Power is Limited' warning message with turtle icon on instrument cluster; vehicle enters limp mode with severely reduced power output; DTC P0A2F may be present; may be confused with or occur alongside ICCU-related power reduction
Owners experiencing repeated 'Power is Limited' events may have had EOP, ICCU, or both diagnosed. Multiple visits for limp-mode symptoms — even if root cause varied — strengthen a substantial-impairment argument. Important to pull full DTC history from service records.
EOP inspection and replacement per TSB 24-EV-003H. GDS diagnosis required to distinguish EOP fault (P0A2F) from ICCU fault (P1A9096).
open
The ICCU may be subject to certain electrical load conditions causing the internal MOSFET to fail, potentially resulting in an open ICCU fuse. An open ICCU fuse prevents 12V battery charging. Upon fault detection, vehicle enters fail-safe driving mode with gradual motive-power reduction. If driven until 12V battery is fully depleted, vehicle loses all motive power.
superseded
The ICCU may be damaged by overvoltage events at the start and end of the 12V battery charging cycle and thermal loading, causing the internal MOSFET to fail and the high-voltage ICCU fuse to open. This prevents the ICCU from charging the 12-volt auxiliary battery, triggering a progressive fail-safe motive-power reduction as the 12V battery depletes.
open
The rear inner driveshaft may have been improperly heat-treated during manufacturing due to a contaminated induction coil (damaged quenching oil supply hose), resulting in lower material durability and susceptibility to fracture under normal driving load.
open
A software error in the Shifter Control Unit (SCU) may cause a voltage fluctuation when the vehicle is off and in Park, momentarily disrupting the command signal to the electronic parking pawl actuator and disengaging the parking pawl.
Every item below comes from this vehicle's documented defects. The more you recognize, the more a free case review is worth your time.
California's Song-Beverly Consumer Warranty Act — the state's lemon law — entitles you to a repurchase or replacement if a manufacturer cannot fix a covered defect after a reasonable number of attempts. For safety defects — like sudden loss of drive power while moving — California presumes that two repair attempts may constitute a reasonable number. For non-safety defects, four attempts or 30 or more cumulative days out of service during the warranty period can trigger the same presumption. If your Ioniq 5 qualifies, you may be entitled to a full vehicle repurchase (your purchase price plus taxes, registration, and finance charges, minus a mileage offset), a replacement vehicle of comparable value, or a negotiated cash settlement. Under Song-Beverly, Hyundai is responsible for your attorney fees if you prevail, which means many California lemon law cases cost the owner nothing out of pocket. The Ioniq 5's ICCU defect is particularly relevant: two recalls, the first proven insufficient, a 17-month delay between documented warranty failures and the first recall filing, and Hyundai's own acknowledgment (through the 15-year / 180,000-mile ICCU warranty extension) that the defect is systemic across the entire E-GMP platform. Owners who were repaired under 24V-204 and then experienced a second ICCU failure have an especially strong documented repair history. The above is general information only and is not legal advice; every case turns on its specific facts and dates.
“Could not duplicate” doesn't mean the defect isn't real. Here's exactly what to do to protect a potential California lemon-law claim.
Document the moment it happens. Photos, video, and screenshots of any warning lights — with the date and the mileage.
Get a repair order every visit — even “found nothing.” That paperwork is the foundation of a claim.
Check your VIN at nhtsa.gov/recalls. Note any recall that has no available remedy yet.
Track your out-of-service days. California law counts the cumulative days your vehicle spends in the shop.
Keep loaner & rental records. Alternate-transport paperwork during long repairs matters.
Save everything in one place. Symptoms, dates, repair orders, and every repeat visit — the intermittent ones especially.
Dealers frequently close Ioniq 5 repair orders as 'unable to duplicate' (UTD) or 'no trouble found' — especially for ICCU and power-limited symptoms that clear temporarily after the 12V battery is recharged or when the car is cold. Here is what to do if that happens to you: 1. Document every event before you arrive at the dealer. Write down the exact warning messages displayed, the date, time, outside temperature, mileage, whether the car had recently been charging, and how far you drove before symptoms began. Photograph any warning lights on the instrument cluster. 2. Demand a printed Diagnostic Trouble Code readout even if the dealer says they found nothing. The key code is P1A9096 ('DC/DC Converter Input Voltage Sensor Fault'). If it appears in stored or historical codes — not just active codes — the ICCU requires physical replacement under recall 24V-868. A dealer who only checks active codes and finds nothing may have missed a history code that triggers mandatory ICCU replacement. 3. Ask whether TSBs 23-01-060H, 24-01-086H, and 24-01-088H have been applied. TSB 24-01-086H is the current definitive recall remedy for 24V-868. TSB 24-01-088H is the companion VCU limp-home update that should be performed at the same visit. If your service record shows an earlier software-only visit under 24V-204 but not the full ICCU replacement and update sequence of 24V-868, the recall work is not complete. 4. Keep every repair order, including UTD visits. Under California law, a UTD visit still counts as a repair attempt for lemon law purposes. 5. Note whether your vehicle was among those previously repaired under recall 24V-204. NHTSA confirmed that the 24V-204 software-only fix was insufficient — vehicles already remedied under that recall also require the 24V-868 hardware replacement. If you had the first recall done and the car failed again, you have documented evidence that Hyundai's initial repair did not resolve the defect.
Hyundai knew about ICCU failures from warranty returns in October 2022 and waited seventeen months to file the first recall. When that first recall's software-only fix failed, Hyundai issued a second, larger recall in November 2024. The 15-year / 180,000-mile ICCU warranty extension that followed is a tacit acknowledgment that no current fix can be considered permanent. For California owners who have been to the dealer once or more for 'Power is Limited' events, power-loss events, or ICCU warning lights, we encourage you to pull your service records and have an attorney review your situation before your warranty window closes.
— The Margarian Law team
Have you taken your Ioniq 5 in for a 'Power is Limited' warning, a sudden loss of drive power, or ICCU-related work? If you owned a 2022, 2023, or 2024 Ioniq 5 and your vehicle was repaired under either recall 24V-204 or 24V-868 — or if it failed again after one of those repairs — your service history may already meet the threshold for a California lemon law claim. The consultation is free. Find out where you stand.
The ICCU recall covers a defect in the Integrated Charging Control Unit that can cause the internal MOSFET component to fail, open the ICCU fuse, and stop the 12-volt auxiliary battery from charging. As the 12V battery drains, the vehicle enters a fail-safe mode that progressively reduces drive power and can result in a total loss of propulsion while you are moving. If you own a 2022, 2023, or 2024 Hyundai Ioniq 5, your vehicle is almost certainly included. Recall 24V-868 (Hyundai internal Recall 272, filed November 2024) covers 100,880 Ioniq 5 vehicles produced between October 4, 2021 and October 9, 2024. It supersedes an earlier recall, 24V-204 (March 2024), which offered a software-only fix that proved insufficient. Vehicles repaired under 24V-204 also require the full hardware remedy under 24V-868. You can verify your vehicle's open recall status by entering your VIN at nhtsa.gov.
The 'Power is Limited' message — often accompanied by an audible chime — is the vehicle's fail-safe warning that the 12V auxiliary battery has lost its charging source. This typically means the ICCU's internal MOSFET has failed and the ICCU fuse has opened. As the 12V battery drains further, the car will progressively slow and eventually lose all drive power. Steering, brakes, and airbags remain functional, but you may have only 22 to 45 minutes to pull over safely after the warning first appears. What to do: signal and move to the right as soon as it is safe, note the time and mileage, call for roadside assistance, and do not attempt to continue driving to the dealer. When you bring the vehicle in, ask the dealer to check for Diagnostic Trouble Code P1A9096 in stored and historical codes — its presence requires full ICCU replacement under recall 24V-868, not just a software update. Document everything: the warning message, the date, weather, and any prior repair visits for the same symptom.
This is one of the most common concerns from Ioniq 5 owners. The first recall (24V-204, March 2024) offered only a software update — specifically a soft-start logic change intended to reduce the overvoltage spikes that trigger MOSFET failure. That fix proved insufficient. NHTSA confirmed that vehicles already repaired under 24V-204 continued to experience ICCU failures, which prompted Hyundai to issue the second, expanded recall 24V-868 in November 2024. Under 24V-868, dealers must scan for Diagnostic Trouble Code P1A9096. If that code appears in stored or historical data — even if not currently active — the ICCU unit itself must be physically replaced and the fuse replaced, followed by a software update. If your prior repair was only a software update and the problem returned, the full hardware replacement under 24V-868 has not been completed. Document each visit: the repair orders from your first and second visits are evidence of repeated repair attempts that directly support a California lemon law claim.
Yes, and it is a known and documented issue. The Vehicle Charging Management System (VCMS) software on 2022-2024 Ioniq 5 vehicles can prematurely terminate a Level 2 (240V AC) charging session due to overly conservative thermal management parameters or coupler temperature fault thresholds. The vehicle stops charging before reaching your target state of charge, and you wake up with less range than you expected. Hyundai issued TSB 23-EV-003H in March 2023 as a first attempt, which reduced charging amperage as a workaround. When charging interruptions continued, Hyundai issued TSB 24-01-051H (Service Campaign 9B5) in July 2024, adding a self-restart capability so the car automatically resumes charging after a coupler temperature fault. If your dealer has not applied the 9B5 VCMS update, ask specifically for it. Multiple failed charging sessions before and after a TSB attempt count as separate repair visits for lemon law purposes.
It may, and the ICCU defect history is particularly strong evidence. California's Song-Beverly Consumer Warranty Act presumes a vehicle is a lemon when a safety defect has gone unrepaired after two or more attempts, or when any substantial defect persists after four attempts, or when the vehicle has been out of service for 30 or more cumulative days during the warranty period. For the Ioniq 5, the key facts are: Hyundai issued two recall campaigns for the same ICCU defect (24V-204 in March 2024, superseded by 24V-868 in November 2024); NHTSA confirmed the first fix was insufficient; owners who had the 24V-204 repair and then experienced another failure have documented evidence of a repeated repair attempt on the same system. The loss of drive power while moving is a safety defect that triggers the two-attempt presumption. Days spent at the dealer for both recall visits, parts delays, and any UTD visits all count toward the 30-day threshold. Gathering your repair orders and consulting a California lemon law attorney is the right first step. If you prevail, Hyundai pays your attorney fees.
After the second ICCU recall (24V-868), Hyundai extended the ICCU warranty for all affected E-GMP platform vehicles — including the Ioniq 5 — to 15 years or 180,000 miles from the vehicle's original in-service date. This means future ICCU failures will be repaired at no charge for most owners' lifetime of ownership. However, the warranty extension does not eliminate or limit your existing lemon law rights. If your vehicle already experienced ICCU failures and required multiple dealer visits before or after the recall repairs, those visits and any days out of service have already happened — and they count toward the Song-Beverly threshold regardless of what Hyundai does going forward. An extended warranty on a part that has already failed multiple times can itself be evidence that the manufacturer acknowledges the defect cannot be permanently resolved by current repairs. The warranty extension does not restart the clock or erase your repair history. Consulting an attorney about your existing repair record remains worthwhile.
Skip to content
