Hyundai Ioniq 5 ICCU Replacement Cost Out of Warranty: Z14 Eligibility + 4 Cost Paths

Q: Can I drive with a failing ICCU?

If you hear a pop followed by warning lights, or the car enters limp mode, stop driving if safe and have the vehicle towed or inspected. A failing ICCU can progress to a complete loss of drive power.

Q: Does Z14 cover a second owner?

Yes. The Z14 letter states the extension is valid for original and subsequent owners.

If you have been told your Ioniq 5 needs a new ICCU and you are “out of warranty,” the owner-reported cost for a dealer replacement is roughly $1,500 to $3,000, and some aggregators report up to $4,000 including a 12V battery. But before you accept that number, verify one thing: many 2022–2024 Ioniq 5 owners are still inside the Z14 ICCU warranty extension — 15 years or 180,000 miles, whichever comes first — and that extension is valid for subsequent owners, not just the original buyer. If Z14 applies, the dealer repair should be $0. The rest of this page separates the four coverage layers that determine what you actually owe, compares four repair paths, and explains when a $799 board repair is reasonable — and when it is likely a waste of money.

Cost figures on this page are owner-reported ranges or publicly listed service prices. They are not Hyundai retail pricing. Dealer is the final authority on eligibility. Last reviewed: November 2026.

Check Your Coverage and Cost Paths

Enter your model, model year, delivery date, mileage, and symptoms below. The checker returns your Z14 / 24V868 status and a four-path cost table. It is a coverage-window guide, not a VIN-level confirmation — official verification links are provided with every result.

Are You Actually “Out of Warranty”? The Four Coverage Layers

“Out of warranty” is the phrase that causes most of the confusion. On an Ioniq 5, there are four separate coverage layers. A dealer saying “you’re out of warranty” may mean the basic bumper-to-bumper coverage has ended — while the ICCU is still covered by a longer EV powertrain warranty or the Z14 extension.

1. Basic Warranty (5 years / 60,000 miles)

Covers most components, including the ICCU if it fails within the window. Once this expires, the ICCU is no longer covered under this layer.

2. EV Powertrain Warranty (10 years / 100,000 miles)

Hyundai’s EV powertrain warranty covers high-voltage components, and the ICCU has been treated as part of this system in recall documentation. This layer runs longer than the basic warranty, but it is still limited by time and mileage.

3. Z14 ICCU Warranty Extension (15 years / 180,000 miles)

Verified fact, Hyundai Z14 customer letter: Warranty coverage for the Integrated Charging Control Unit (ICCU) and ICCU fuse has been extended to 15 years or 180,000 miles from the date of original retail delivery or first use, whichever occurs first, and is valid for original and subsequent owners. Covered vehicles named in the letter: 2022–2024 Ioniq 5, 2024 Ioniq 5 Robotaxi, and 2023–2025 Ioniq 6.

Critical boundary: The 2025 Ioniq 5 is not named in the Z14 customer letter. If you own a 2025 Ioniq 5, the Z14 text does not cover you, even though the same ICCU part is involved. Some technical service bulletin summaries list “2025, 2026” model years in abbreviated form, but the customer-facing Z14 letter is specific: 2022–2024 Ioniq 5. Treat 2025 Ioniq 5 as “verify with dealer” rather than assuming coverage.

4. Recall 24V868 Remedy (Free, but Not a Permanent Redesign)

NHTSA recall 24V868 (Hyundai campaign 272) provides a free remedy: software updates, inspection, and replacement of the ICCU and its fuse where needed, plus a 12V battery if required. The recall is VIN-specific — not every 2022–2024 Ioniq 5 is included. Check your VIN at NHTSA.gov/recalls.

The recall remedy is free, but it is not a guarantee that the ICCU will never fail again. A federal class-action filed in 2026 alleges that some replacement ICCUs installed under the recall are failing again; that claim is unresolved. Hyundai’s decision to extend warranty coverage to 15/180 through Z14 is a signal that the company itself is still monitoring the component, even after two recall rounds.

ICCU Replacement Cost: Four Paths Compared

Once you know which coverage layer applies, the cost question becomes a path question. The table below summarizes the four realistic options. All cost ranges are owner-reported or publicly listed service prices, not manufacturer retail pricing.

Path	Estimated cost	Preconditions	Key risk
1. Dealer — Z14 covered	$0 (verified fact if Z14 applies)	VIN qualifies; IONIQ-certified dealer; within 15 yr / 180,000 mi	Official VIN tool may not display coverage; dealer confirmation required
2. Dealer — out of warranty	~$1,500–$3,000 (Ioniq 5); ~$1,500–$4,000 (AmpAuto owner-reported); ~$3,500–$6,000 (EV6)	No Z14; no recall remedy available	Ranges are owner-reported, not official pricing; parts wait; possible rental cost
3. Board-level repair	~$799 + removal/install labor (Circuit Board Medics listed price)	Failure is board-level (DC-DC side); not an open HV fuse or physically destroyed power stage	Success rate NOT VERIFIED; removal and reinstall required; not suitable for all failure modes
4. Independent shop / used part	~$1,200–$2,200 (independent); ~$600–$1,200 (used part) + labor	Competent independent EV shop; programmable used unit	Used unit may share original defect; warranty uncertain; programming may require dealer tools

Sources for the cost ranges above: autoedgeview (owner-report aggregation, 2026), AmpAuto (owner-report aggregation, 2026), CarPayCheck (owner-reported, explicitly “not independently verified”), Circuit Board Medics (listed price, $799.99). EV6 range from AmpAuto. The cause of the EV6 vs. Ioniq 5 range difference is NOT VERIFIED; it may reflect dealer pricing, regional labor rates, or parts availability, but this has not been independently established.

Path 1 — Dealer, Z14-Covered ($0)

If your vehicle is named in Z14 and you are within 15 years / 180,000 miles, the dealer ICCU and fuse replacement is covered. The Z14 letter instructs owners to contact an IONIQ-certified Hyundai dealer for inspection. Do not authorize a paid repair before the dealer has checked Z14 eligibility in the Hyundai system.

Path 2 — Dealer, Out-of-Warranty (~$1,500–$3,000+ Owner-Reported)

The most commonly cited owner-reported range for an out-of-warranty Ioniq 5 dealer replacement is $1,500–$3,000 in parts and labor. One aggregator reports $1,500–$4,000, and another notes that a 12V battery may add $250–$400. EV6 owners report a higher range, $3,500–$6,000. These are estimates, not quotes. The range is wide because dealer labor rates, regional parts pricing, and whether a 12V battery is included all vary.

Path 3 — Board-Level Repair (~$799 + Labor)

Circuit Board Medics lists an ICCU module repair for 2022–2025 Ioniq 5 and Ioniq 6 at $799.99. This is the lowest-cost credible path on the SERP, but the service page does not explain when board repair is technically inappropriate. The limitation matters: if the ICCU failure has opened the high-voltage fuse or physically damaged the power stage, repairing only the board may not be sufficient. The board-repair suitability logic below is an inference from the documented failure mechanism, not an OEM repair criterion.

Path 4 — Independent Shop / Used Part (~$1,200–$2,200 / $600–$1,200)

An independent EV specialist may charge less than a dealer, and a used ICCU can reduce the parts cost further. The trade-offs are real: a used unit may be an unrepaired defective part, its warranty status is uncertain, and programming may require dealer-level tools. This path makes sense only if you have a competent independent shop and can verify the condition of the used unit.

Which Path Fits Your Symptoms?

The symptom pattern is the second major decision variable after coverage. It determines whether board repair is a reasonable option or a likely dead end.

12V Drain / No Charge, No “Pop” → Board Repair May Be Viable

If the primary symptoms are a repeatedly dead 12V battery, refused charging, or a “Check Electric Vehicle System” warning without an audible “pop” sound or limp mode, the failure may be limited to the board-level DC-DC side. In that scenario, the $799 board repair is at least worth discussing with a technician. This is an inference, not a guarantee — physical inspection is still required.

“Pop” Sound + Limp Mode → Full ICCU + Fuse Evaluation Likely Required

An audible “pop” from the rear followed by warning lights, or the car entering limp mode or reduced power, is a more severe presentation. It suggests the failure may involve the high-voltage fuse or the power stage, not just the control board. Board repair alone is likely inappropriate in this pattern. The vehicle should be inspected for ICCU and fuse replacement. If the car is in limp mode or warns you to stop, do not continue driving.

Recall Done but Failed Again → Document, Escalate, Check Z14 Window

Owners have reported ICCU symptoms returning after a 24V868 recall repair, and a class-action filed in 2026 alleges this pattern. If this happens to you: document the symptoms and the date, return to the dealer, and confirm whether Z14 coverage applies to your VIN. A recurrence does not automatically mean you must pay — it means the coverage check becomes more important, not less.

What If the VIN Tool Shows Nothing?

Two independent outlets have reported that Hyundai’s VIN lookup tool is showing no ICCU campaign for some vehicles whose model year is named in the recall or extension. This is a reported signal, not a claim that the tool always fails.

If the official Z14 VIN tool returns no result for a vehicle you believe should be covered:

Do not pay for the repair yet. A blank tool result is not proof that the car is ineligible.
Bring your Z14 customer letter (if you received one) to an IONIQ-certified dealer and ask the service department to check the campaign in the Hyundai system directly.
Check the VIN at NHTSA.gov/recalls as a second reference point.
If the dealer also cannot confirm coverage, ask for the denial in writing and escalate to Hyundai Motor America customer service.

If You Already Paid: Z14 Reimbursement Steps

The Z14 letter states that if you previously paid for a repair addressing the ICCU condition, you may be eligible for reimbursement. The steps, taken directly from the letter:

Gather your repair invoice and proof of payment.
Visit hyundaiausa.com/campaignhome.
Click the icon in the top right, then click “Contact Us.”
Click the “Campaign Reimbursement” tile and follow the on-screen directions to submit.
You can also call 1-855-371-9460 for additional information.

Reimbursement is not automatic, and the letter does not guarantee approval. It is a documented path worth pursuing if you paid for an ICCU repair that may fall within the Z14 window.

Methodology, Assumptions, and Limitations

How the coverage window is calculated: Remaining Z14 coverage is the earlier of 180 months from original delivery and 180,000 miles minus current mileage. The tool uses the delivery month and year you enter, not the model year alone. If you enter a delivery date that is in the future or inconsistent with the model year, the tool flags it.

What “owner-reported” means: The $1,500–$3,000, $1,500–$4,000, and $3,500–$6,000 ranges are aggregations of owner reports and secondary cost guides. They are not manufacturer retail prices, and they have not been independently audited. A dealer quote may be higher or lower.

Board-repair suitability is an inference. The tool uses a rule: symptoms without “pop” or limp mode may be compatible with board-level repair; symptoms with “pop” or limp mode are flagged as likely requiring full ICCU and fuse evaluation. This rule is derived from the documented failure mechanism (MOSFET stress, possible HV fuse opening), but it is not an OEM repair criterion. A physical inspection is required.

What this page cannot do: It cannot diagnose your vehicle, confirm your VIN-level eligibility, or predict the final dealer quote. It cannot tell you whether a specific ICCU is board-repairable. Those determinations require a dealer or qualified technician.

Frequently Asked Questions

Is my 2022–2024 Ioniq 5 covered by Z14?

If your vehicle is a 2022–2024 Ioniq 5 and is within 15 years / 180,000 miles from original delivery, it is named in the Z14 extension. The extension is valid for subsequent owners. Confirm with your VIN through the official Z14 tool or an IONIQ-certified dealer.

How much does ICCU replacement cost out of warranty?

Owner-reported dealer replacement for an Ioniq 5 is roughly $1,500–$3,000, with some reports up to $4,000 including a 12V battery. EV6 owner reports are higher, roughly $3,500–$6,000. These are estimates, not official pricing.

Does 24V868 permanently fix the ICCU?

The recall remedy is free and addresses the immediate failure, but Hyundai’s decision to extend coverage to 15/180 through Z14 indicates the company is still monitoring the component. A class-action filed in 2026 alleges some replacement units have failed again; that claim is unresolved. The recall is not a lifetime guarantee.

What are the symptoms of a failing ICCU?

Early signs include a repeatedly dead 12V battery, refused or interrupted charging, and a cluster of unrelated warning lights. More severe signs are an audible “pop” from the rear, “Check Electric Vehicle System,” limp mode, and progressive loss of drive power.

Can I drive with a failing ICCU?

If you hear a “pop” followed by warning lights, or the car enters limp mode, stop driving if safe and have the vehicle towed or inspected. A failing ICCU can progress to a complete loss of drive power.

Does Z14 cover a second owner?

Yes. The Z14 letter states the extension is valid for original and subsequent owners.

Can I get reimbursed if I already paid?

The Z14 letter provides a reimbursement path at hyundaiausa.com/campaignhome. Approval is not guaranteed, but the route exists. Gather your invoice and proof of payment before submitting.

What if my VIN shows nothing in the Z14 tool?

A blank result is not proof of ineligibility. Bring your Z14 letter to an IONIQ-certified dealer and ask them to check the campaign in the Hyundai system. Do not authorize a paid repair before that check.

Is $799 board repair a real option?

It is a real listed service price from Circuit Board Medics for 2022–2025 Ioniq 5 and Ioniq 6. It is most likely to be appropriate when the failure is board-level and has not opened the HV fuse or destroyed the power stage. Success rate is NOT VERIFIED.

Is a used ICCU safe?

A used ICCU carries risk: it may be an unrepaired defective part, and its warranty status is uncertain. It is a lower-cost path only if you can verify the unit’s condition and have a shop capable of programming it.

Why is EV6 ICCU replacement reported higher than Ioniq 5?

The reported ranges differ — roughly $3,500–$6,000 for EV6 versus $1,500–$3,000 for Ioniq 5 — but the cause is NOT VERIFIED. Possible factors include dealer pricing, regional labor rates, and parts availability, but no independent source has established a definitive explanation.

Is 2025 Ioniq 5 covered by Z14?

The Z14 customer letter names 2022–2024 Ioniq 5. The 2025 Ioniq 5 is not named in the letter text. Verify with an IONIQ-certified dealer whether a later extension applies; do not assume coverage based on the model name alone.

Official Resources

Sources

Claim	Source	Type	Date	Status
Z14: 15 yr / 180,000 mi; original and subsequent owners; 2022–2024 Ioniq 5, 2024 Ioniq 5 Robotaxi, 2023–2025 Ioniq 6	Hyundai Z14 Extended Warranty Notification	Official OEM	2026	VERIFIED
Z14 reimbursement steps (campaignhome, Contact Us, Campaign Reimbursement; 1-855-371-9460)	Hyundai Z14 letter	Official OEM	2026	VERIFIED
24V868 population 145,642; total remedied 118,691 (2025-Q2)	NHTSA RCLQRT-24V868	Government	2025-07-23	VERIFIED
24V868 repair completion 95.94% (reported to NHTSA)	NHTSA-derived reporting	Government-derived	2026-11-04	VERIFIED AS REPORTED
Board repair $799.99 (2022–2025 Ioniq 5 / Ioniq 6)	Circuit Board Medics	Commercial service	Page undated	VERIFIED (price); success rate NOT VERIFIED
Ioniq 5 out-of-warranty dealer replacement ~$1,500–$3,000	autoedgeview (owner-report aggregation)	Estimate	2026-07	ESTIMATE / OWNER-REPORTED
Ioniq 5 out-of-warranty ~$1,500–$4,000; 12V battery $250–$400	AmpAuto / CarPayCheck (owner-report aggregations)	Estimate	2026	ESTIMATE; CarPayCheck explicitly “not independently verified”
EV6 out-of-warranty ~$3,500–$6,000	AmpAuto	Estimate	2026-06	ESTIMATE
MOSFET failure can open ICCU fuse; ICCU and fuse may need simultaneous replacement	NHTSA TSB / recall documentation	Technical	Undated in snippet	VERIFIED technical constraint
Genesis GV60 15/180 ICCU extension	Genesis Extended Warranty Notification	Official OEM	2026	VERIFIED
VIN tool showing nothing for some covered vehicles	Carscoops / Wheel Front reporting	Journalism / owner reports	2026-04	REPORTED SIGNAL; not a universal failure claim
Class-action alleges replacement ICCUs failing again	Federal class-action reporting (The Motor Guy)	Legal filing / journalism	2026	FACT (filing exists); outcome unresolved

If you see an error on this page, contact us. This page is a decision-support guide, not legal, financial, or mechanical advice. Dealer is the final authority on eligibility and repair cost.

If you are weighing whether to repair or replace the vehicle, our EV ownership cost calculator can help frame the decision against depreciation, insurance, and charging costs.

For a step-by-step walkthrough of how to verify a recall by VIN across Hyundai, Kia, and Genesis, see our EV recall check guide.

For a wider list of reported Ioniq 5 issues — including items unrelated to the ICCU — see our Hyundai Ioniq 5 problems hub.

If you are concerned about long-term battery health alongside the ICCU issue, our EV battery degradation calculator estimates capacity loss over time.

Related EV Tools & Guides

Decision-support tools and guides that pair with this ICCU cost comparison.

EV Tools

EV Ownership Cost Calculator — estimate annual and total cost of ownership across charging, insurance, maintenance, and depreciation.
EV Charging Cost Calculator — estimate home and public charging costs by kWh rate, efficiency, and annual mileage.
EV Battery Degradation Calculator — project capacity loss and range impact over time.
EV Range Calculator — estimate real-world range from efficiency, temperature, and driving conditions.

EV Ownership & Repair Guides

EV Maintenance Hub — what actually needs servicing on an EV, and what does not.
EV Warranty Guide — how basic, powertrain, and extended warranty layers differ across Hyundai, Kia, and Genesis.
EV Recall Check Guide — how to verify a recall by VIN at NHTSA and with the manufacturer.
Hyundai Ioniq 5 Problems Hub — a consolidated list of reported Ioniq 5 issues, including ICCU, 12V, and charging faults.

Model-Specific Cost Pages

Kia EV6 ICCU Replacement Cost — owner-reported ranges and recall/extension status for the EV6.
Hyundai Ioniq 6 ICCU Replacement Cost — Z14 coverage window and cost paths for the Ioniq 6.

Ioniq 5 ICCU Cost Out of Warranty: Z14 Check + 4 Paths