Au7o mascotAu7o
Known IssuesTest Hub demo
  1. Au7o
  2. /
  3. Known Issues
  4. /
  5. Hyundai
  6. /
  7. Ioniq 5 N
Hyundai · Known Issues

2024-2025 Hyundai Ioniq 5 N Problems: 8 Known Issues

2024-2025 model years · 640+ owner reports · Updated August 2026

Share:@au7o.io

All years · All trims · All engines

Choose the year and equipment for your written issues and visual request.

No email neededHow interest is saved

Interest applies to the selected vehicle and configuration; it is not a reservation. Voting stores a first-party identifier for up to 180 days to prevent repeat votes. No account or email is needed. Clearing cookies or using another device may count separately. Privacy

Choose your vehicle configuration

Choose a year to request this visual. Trim and engine are optional; omitted trim is Not specified.

Which vehicle’s visual would you like?

Choose from our year, make, model and trim catalog. This does not change the page underneath or mean a visual is already available.

Choose a vehicle configuration to continue. No request has been submitted.

Visual coming soon

Your interest helps us choose what to build next.

Visual Known Issues · Coming soon

$4.99/month plus taxes at launch · No payment today

Choose a year to request this visual. Trim and engine are optional; omitted trim is Not specified.

Preview the XT6 example
Known IssuesMotorcycle IssuesDTC LookupDrivePricingAboutTermsPrivacyCookiesConsentData rightsCopyrightFeedback
Share:@au7o.io

Vehicle data and repair guidance on this site are compiled with AI assistance and may contain errors. Always verify with your service manual or a qualified mechanic.

Data protection representation

DataRep representative in the United KingdomDataRep representative in the European Union
Au7o · 2026
Built for DIY mechanics. Privacy-first.
Explore free Hub demo

Optional email notification

Choose a year to request this visual. Trim and engine are optional; omitted trim is Not specified.

Which vehicle’s visual would you like?

Choose from our year, make, model and trim catalog. This does not change the page underneath or mean a visual is already available.

Choose a vehicle configuration to continue. No request has been submitted.

Issue summary

According to Au7o's analysis of 640+ owner reports, the 2024-2025 Hyundai Ioniq 5 N has 8 documented known issues, with 3 rated critical. The most serious are Integrated Charging Control Unit (ICCU) Failure ($0-$0 repair), Left-Foot Braking (LFB) Mode Depressurizes ABS, Causing Long Pedal and Extended Stopping Distance ($0-$0 repair) and N e-Shift Software Fault Causes Continued Acceleration After Throttle Release ($0-$0 repair). The most commonly reported issue is Integrated Charging Control Unit (ICCU) Failure with 320 owner reports. Across all issues with published estimates, repair costs range from $25 to $1,500. DIY maintenance guides at au7o.io.

In This Article

  • Ioniq 5 N Electrical3
  • Ioniq 5 N Brakes2
  • Ioniq 5 N Drivetrain2
  • Ioniq 5 N Body/Panels1
  • FAQ
Get Started
Back to top

In This Article

  • Electrical3
  • Brakes2
  • Drivetrain2
  • Body/Panels1
  • FAQ

All 8 Known Issues

Filter:
ALL YEARS20252024
Community reported
320 owners

The Ioniq 5 N shares the E-GMP platform's well-documented ICCU failure, which affects approximately 145,000 Hyundai and Kia EVs in the US (recall covering 2022-2024 Ioniq 5, including the N variant). The ICCU handles DC fast charging, AC charging, and 12V battery maintenance. It fails due to overvoltage spikes at the start and end of 12V charging cycles and thermal stress during charging and driving. When the ICCU fails, the vehicle displays a 'Check Power System' or 'Check Electrical System' warning, the 12V battery drains rapidly, and the vehicle may enter limp mode or become completely inoperable. Hyundai's initial recall fix did not fully resolve the issue, with new ICCU failures reported on previously-remedied vehicles.

Common Symptoms

  • Check Power System or Check Electrical System warning
  • 12V battery drains to critical level within hours
  • Vehicle enters limp mode with limited speed
  • DC fast charging fails or stops prematurely
  • Vehicle will not start after sitting for 2-3 days

How to Fix

Check your VIN against NHTSA recall 24V-868 at nhtsa.gov/recalls. If affected, schedule a dealer appointment for the ICCU replacement at no cost. Be aware that replacement ICCU parts have been backordered 2+ months at many dealers. If the 12V battery drains, the vehicle can sometimes be jump-started to reach the dealer, but drive directly there without stopping. After the ICCU replacement, Hyundai recommends not leaving the vehicle unplugged for extended periods. If your vehicle has already had the recall repair and the ICCU fails again, inform the dealer that Hyundai has acknowledged repeat failures and a second replacement may be needed.

Find a Hyundai dealer

Choose to share your location for this search, or enter an area below. Your search location is sent to Google to find dealers.

Open Hyundai dealer map in Google Maps ↗

Call to confirm they service Hyundai vehicles and check your VIN, recall eligibility, parts availability, and appointment options.

Owner tips & cautions

  • TipInstall a 12V battery monitor (like the Battery Minder or FIXD sensor) to get early warning of ICCU failure. When the ICCU starts failing, it stops maintaining the 12V battery, and a monitor will alert you to abnormal voltage drops before the vehicle becomes undrivable.
  • TipIf the dealer says ICCU parts are backordered, request a loaner vehicle. Hyundai's recall policy requires providing alternate transportation when safety recall parts are unavailable.
Typical repair cost:$0 - $0

Research This Issue

Based on 320 owner reports

GoogleRedditYouTubeNHTSA
Community Reported
High Confidence320 owner reportsLast reported by owners Mar 2026Reviewed Mar 2026
Community reported
185 owners

Like the standard Ioniq 5, the Ioniq 5 N suffers from excessive parasitic draw on the 12V auxiliary battery from always-on systems including Bluelink telematics, the vehicle security system, and multiple electronic control modules. The smaller AGM 12V battery is more sensitive to deep discharge cycles than conventional batteries. The Ioniq 5 N's additional performance electronics (N-specific drive mode controller, electronic limited-slip differential controller) may place additional drain on the 12V system. Owners report dead 12V batteries after 3-7 days of the vehicle sitting unused, preventing the car from starting even with a fully charged main battery.

Common Symptoms

  • Vehicle will not power on after sitting 3-7 days
  • Dashboard is completely dark when pressing start button
  • Key fob unable to unlock doors remotely
  • Bluelink app shows vehicle offline
  • 12V battery voltage drops below 11V after 48 hours unplugged

How to Fix

If the vehicle will sit for more than 3-4 days, either keep it plugged into a Level 1 or Level 2 charger (which maintains the 12V battery) or connect a 12V battery tender to the auxiliary battery. The 12V battery is located under the hood (front trunk area). Disable Bluelink remote features in the vehicle settings if not needed, as the telematics module is a significant parasitic draw. Replace the 12V battery proactively every 2-3 years with a high-quality AGM battery ($150-$250). After a dead 12V battery jump-start, drive for at least 30 minutes to allow the DC/DC converter to fully recharge the 12V system.

Owner tips & cautions

  • TipThe simplest prevention is to leave the car plugged in when not driving. Even a standard 120V Level 1 outlet is enough to keep the 12V battery maintained. If that is not possible, a NOCO Genius1 battery maintainer connected to the 12V battery terminals under the hood prevents dead battery surprises.
Typical repair cost:$25 - $250

Research This Issue

Based on 185 owner reports

GoogleRedditYouTubeNHTSA
Community Reported
High Confidence185 owner reportsLast reported by owners Mar 2026Reviewed Mar 2026

Two related software problems affect the ccNC-generation head unit. The display intermittently goes to a static or snowy image and stops responding to touch for a minute or two, recurring roughly monthly on affected cars - this takes the climate controls, drive-mode menus and the N performance displays with it because they live in the touchscreen. Separately, Bluelink remote functions (remote climate precondition, remote charge start, vehicle status) stop working; Hyundai has attributed part of this to intermittent loss of connectivity on the Verizon telematics network rather than a hardware fault. Wireless CarPlay dropping to no-connection is a third, commonly reported symptom on 2025 cars.

Common Symptoms

  • Screen goes static/snowy and touch stops responding
  • Head unit reboots on its own
  • Bluelink remote climate or remote charge fails to connect
  • Wireless CarPlay will not pair or drops mid-drive

How to Fix

For a frozen or static screen, force a head-unit reset: on 2022-2024 cars a paperclip in the pinhole beside the physical controls at the right of the screen reboots it; owners report the pinhole reset does not work on 2025 cars, which need a brief 12V negative-terminal disconnect instead. For Bluelink, delete and re-add the vehicle in the app and have the dealer check for a telematics unit software update - Hyundai has issued bulletins covering connectivity interruptions. Persistent static-screen cases warrant head unit software reflash or replacement under the 3yr/36k basic warranty.

Typical repair cost:$0 - $1,500

Research This Issue

GoogleRedditYouTubeNHTSA
Community Reported
Medium ConfidenceVerifiedReviewed Aug 2026

The Ioniq 5 N's Left-Foot Braking mode lets the driver hold throttle and brake simultaneously for track use. A logic fault in the Integrated Electronic Brake (IEB) control software can command depressurization of the ABS hydraulic circuit during certain maneuvers with LFB active. The car still brakes, but hydraulic assist is reduced - the pedal goes long and hard and stopping distances increase sharply, exactly when the driver is braking hardest. This is a distinct failure from the normal regen-to-friction blending complaints: it is a software-commanded pressure loss, not a transition feel issue. Covered by NHTSA recall 25V-235 alongside the N e-Shift defect; roughly 1,500-1,600 US vehicles.

Common Symptoms

  • Hard, long brake pedal requiring much more effort
  • Noticeably longer stopping distance
  • Loss of ABS assist during left-foot braking
  • Brake warning message on cluster

How to Fix

Apply the recall 25V-235 IEB software update (OTA or dealer, free). Hyundai's interim instruction was to leave LFB switched off entirely until the reflash was done. If the pedal has felt long, also have the dealer verify brake fluid condition and bleed the system - track-heat-cycled fluid on this car boils faster than owners expect.

Typical repair cost:$0 - $0

Research This Issue

GoogleRedditYouTubeNHTSA
Community Reported
High ConfidenceVerifiedReviewed Aug 2026
Community reported
75 owners

The Ioniq 5 N features aggressive regenerative braking (up to 0.6g) with its N-specific brake system, but owners report a clunking or clicking noise from the rear brakes during the transition between regenerative and friction braking. The sound occurs when the brake pedal crosses the threshold where mechanical brake pads engage after regenerative braking reaches its limit. The brake discs can also develop surface rust quickly when regenerative braking is used heavily (reducing friction brake use), leading to additional scraping noise on first brake application after the car has sat. The issue is exacerbated by the Ioniq 5 N's aggressive regen settings in N mode and e-pedal mode.

Common Symptoms

  • Clunking noise from rear brakes when transitioning from regen to friction
  • Clicking sound when releasing or pressing brake pedal
  • Scraping or grinding noise on first brake application after sitting
  • Visible rust on brake disc surfaces after 2-3 days parked
  • Pulsating sensation through brake pedal at low speeds

How to Fix

Light surface rust on brake discs is normal for EVs with strong regenerative braking and will clear within a few brake applications. For the regen-to-friction transition clunk, visit the dealer for a brake system inspection — the rear caliper mounting hardware or anti-rattle clips may need adjustment ($0-$200). Periodically use moderate friction braking (pressing the brake pedal firmly at lower speeds) to keep the disc surfaces clean and prevent excessive rust buildup. In N mode, the virtual gear shifting feature engages strong regen which reduces friction brake use — balance this with occasional conventional braking. If disc rust is severe, the dealer can resurface or replace the rotors ($200-$400 per axle).

Owner tips & cautions

  • TipOnce a week, make a few moderate-to-firm brake applications at 30-40 mph to scrub the disc surfaces clean. This prevents the rust buildup that causes scary-sounding scraping on your first stop. It only takes a minute and keeps the brakes in good shape.
Typical repair cost:$0 - $400

Research This Issue

Based on 75 owner reports

GoogleRedditYouTubeNHTSA
Community Reported
Medium Confidence75 owner reportsLast reported by owners Mar 2026Reviewed Mar 2026

On Ioniq 5 N models equipped with the simulated-shift 'N e-Shift' feature, a Vehicle Control Unit (VCU) software logic error can allow the drive motors to keep producing torque briefly after the driver lifts off the accelerator, particularly during aggressive up/down-shift inputs with the paddles. Because the e-Shift routine deliberately modulates torque to fake gear changes, the control logic can hold torque commanded when it should have zeroed it, producing an unintended acceleration event. Hyundai filed a safety recall (NHTSA 25V-235, superseding 25V-065) covering Ioniq 5 N vehicles with the N e-Shift and left-foot-braking features and told owners to stop using the feature until updated. Hyundai reported awareness of at least one crash. Owners on ioniqforum described the car surging while driving in N mode before the recall was published.

Common Symptoms

  • Car continues to accelerate after lifting off the accelerator
  • Surge or lurch during simulated paddle shifts
  • Unintended acceleration in N mode
  • Warning that N e-Shift is disabled after update

How to Fix

Have the VCU (and Integrated Electronic Brake) software reflashed under recall 25V-235 - delivered over-the-air or by a Hyundai dealer at no charge. Vehicles already updated under the earlier 25V-065 campaign must be re-flashed with the newer remedy; the first fix did not fully resolve it. Until the update is applied, do not use N e-Shift.

Find a Hyundai dealer

Choose to share your location for this search, or enter an area below. Your search location is sent to Google to find dealers.

Open Hyundai dealer map in Google Maps ↗

Call to confirm they service Hyundai vehicles and check your VIN, recall eligibility, parts availability, and appointment options.

Typical repair cost:$0 - $0

Research This Issue

GoogleRedditYouTubeNHTSA
Community Reported
High ConfidenceVerifiedReviewed Aug 2026
Community reported
60 owners

The Ioniq 5 N's dual-motor AWD system can produce an objectionable high-pitched whine or electric motor noise at highway speeds (60+ mph), particularly from the front drive unit. While some motor noise is expected in performance EVs, the Ioniq 5 N's noise level has been reported as excessive compared to the standard Ioniq 5, potentially due to the N-specific motor tuning for higher output (641 hp combined). The noise is more noticeable with the virtual engine sound system (N Active Sound+) turned off, as there is no masking. Some owners have required front drive unit replacement to resolve the issue, but the noise can return on the replacement unit.

Common Symptoms

  • High-pitched whine audible at 60+ mph
  • Motor noise increases with speed, not throttle input
  • Noise is most noticeable with N Active Sound turned off
  • Sound appears to come from the front of the vehicle
  • Noise may vary with temperature — louder when cold

How to Fix

Visit a Hyundai dealer and have the technician road-test the vehicle at highway speed to verify the motor noise. The dealer should compare the noise level against Hyundai's specifications. If the noise exceeds specifications, the front drive unit may need replacement under warranty. Turning on the N Active Sound+ system at a moderate volume masks the motor whine during spirited driving. Adding sound-deadening material to the wheel wells and firewall ($100-$300 DIY, $500-$800 professionally installed) can also reduce the perceived noise level. Note that some motor whine is inherent to the high-output motors and may not be fully eliminable.

Owner tips & cautions

  • TipBefore spending money on sound deadening, try the N Active Sound+ system on the 'Ignition' setting at volume 3-4. Many owners find this provides enough auditory feedback to make the motor whine unnoticeable, while also giving the car a more engaging driving character.
Typical repair cost:$0 - $800

Research This Issue

Based on 60 owner reports

GoogleRedditYouTubeNHTSA
Community Reported
Medium Confidence60 owner reportsLast reported by owners Mar 2026Reviewed Mar 2026

A persistent rear-of-cabin rattle is one of the most reported non-safety complaints on the Ioniq 5 line, and it is louder on the N because there is no engine noise and the N's stiffer damping and 21-inch wheels feed more impact energy into the body. Hyundai issued TSB 24-BD-012H addressing rattle and friction noise from the tailgate caused by an incorrect gap between the tailgate and the body. Owners have traced additional sources independently: the rear seatbelt guide and buckle assemblies knocking against the hard plastic side trim, and the B-pillar seatbelt-height-adjuster cover. N-car owners on n-cars.net report the same noises.

Common Symptoms

  • Rattle from rear hatch over bumps
  • Buzzing or knocking from rear side trim
  • Creak from rear of cabin on uneven pavement
  • Noise disappears when rear seatbelts are buckled

How to Fix

Start with the TSB: adjust the tailgate's rubber overslam bumpers and the tailgate-to-body gap per 24-BD-012H, which cures the majority of cases. If the noise persists, buckle the rear seatbelts into their latches to stop the buckle tongues tapping the trim, and add felt tape behind the rear seatbelt guide and the B-pillar height-adjuster cover. Check the cargo-floor board and the tire-repair kit/undertray for loose contents before disassembling trim.

Typical repair cost:$0 - $300

Research This Issue

GoogleRedditYouTubeNHTSA
Community Reported
High ConfidenceVerifiedReviewed Aug 2026
🔧
A mechanic who knows YOUR exact car
Answers tuned to your year, make, model & trim — not generic advice. Save your garage so it always has the right context.
Get ahead of Hyundai Ioniq 5 N problems — free
Leave your email and we'll alert you the moment there's a new recall or known issue for your Hyundai Ioniq 5 N. Free, no account needed.

Don't see your problem? Describe your symptoms to get a diagnosis, or get a full repair guide.

Other Hyundai Models

Hyundai Elantra42Hyundai Sonata31Hyundai Tucson23Hyundai Veloster22Hyundai Palisade19Hyundai Santa Cruz17

Frequently Asked Questions

What are the most common Hyundai Ioniq 5 N problems?

According to Au7o's analysis of 640+ owner reports, the 2024-2025 Hyundai Ioniq 5 N has 8 documented issues. The most frequently reported are: Integrated Charging Control Unit (ICCU) Failure, Left-Foot Braking (LFB) Mode Depressurizes ABS, Causing Long Pedal and Extended Stopping Distance, N e-Shift Software Fault Causes Continued Acceleration After Throttle Release. Of these, 3 are rated critical and should be addressed promptly.

Is the Hyundai Ioniq 5 N reliable?

The 2024-2025 Hyundai Ioniq 5 N has 8 known issues documented across 640+ owner reports. 3 issues are rated critical: Integrated Charging Control Unit (ICCU) Failure and Left-Foot Braking (LFB) Mode Depressurizes ABS, Causing Long Pedal and Extended Stopping Distance and N e-Shift Software Fault Causes Continued Acceleration After Throttle Release. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Hyundai Ioniq 5 N problems?

Repair costs for known Hyundai Ioniq 5 N issues range from $0 to $1,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Integrated Charging Control Unit (ICCU) Failure, typically costs $0-$0 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2024 Hyundai Ioniq 5 N Integrated Charging Control Unit (ICCU) Failure?

The Ioniq 5 N shares the E-GMP platform's well-documented ICCU failure, which affects approximately 145,000 Hyundai and Kia EVs in the US (recall covering 2022-2024 Ioniq 5, including the N variant). The ICCU handles DC fast charging, AC charging, and 12V battery maintenance. It… Repairs typically run $0-$0. Severity: high.

What is the 2025 Hyundai Ioniq 5 N Left-Foot Braking (LFB) Mode Depressurizes ABS, Causing Long Pedal and Extended Stopping Distance?

The Ioniq 5 N's Left-Foot Braking mode lets the driver hold throttle and brake simultaneously for track use. A logic fault in the Integrated Electronic Brake (IEB) control software can command depressurization of the ABS hydraulic circuit during certain maneuvers with LFB active. Repairs typically run $0-$0. Severity: high.

Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.

Data sourced from 640+ owner reports, NHTSA recalls, TSBs, and automotive forums.

What is the 2025 Hyundai Ioniq 5 N N e-Shift Software Fault Causes Continued Acceleration After Throttle Release?

On Ioniq 5 N models equipped with the simulated-shift 'N e-Shift' feature, a Vehicle Control Unit (VCU) software logic error can allow the drive motors to keep producing torque briefly after the driver lifts off the accelerator, particularly during aggressive up/down-shift inputs… Repairs typically run $0-$0. Severity: high.

What is the 2024 Hyundai Ioniq 5 N 12V Auxiliary Battery Parasitic Drain?

Like the standard Ioniq 5, the Ioniq 5 N suffers from excessive parasitic draw on the 12V auxiliary battery from always-on systems including Bluelink telematics, the vehicle security system, and multiple electronic control modules. The smaller AGM 12V battery is more sensitive to… Repairs typically run $25-$250. Severity: medium.

What is the 2024 Hyundai Ioniq 5 N Regenerative-to-Friction Brake Transition Clunk and Noise?

The Ioniq 5 N features aggressive regenerative braking (up to 0.6g) with its N-specific brake system, but owners report a clunking or clicking noise from the rear brakes during the transition between regenerative and friction braking. The sound occurs when the brake pedal crosses… Repairs typically run $0-$400. Severity: low.

What is the 2024 Hyundai Ioniq 5 N High-Pitched Motor Whine at Highway Speeds?

The Ioniq 5 N's dual-motor AWD system can produce an objectionable high-pitched whine or electric motor noise at highway speeds (60+ mph), particularly from the front drive unit. While some motor noise is expected in performance EVs, the Ioniq 5 N's noise level has been reported… Repairs typically run $0-$800. Severity: low.

What is the 2024-2025 Hyundai Ioniq 5 N Tailgate and Rear Trim Rattle Over Broken Pavement (TSB 24-BD-012H)?

A persistent rear-of-cabin rattle is one of the most reported non-safety complaints on the Ioniq 5 line, and it is louder on the N because there is no engine noise and the N's stiffer damping and 21-inch wheels feed more impact energy into the body. Hyundai issued TSB 24-BD-012H… Repairs typically run $0-$300. Severity: low.

What is the 2024-2025 Hyundai Ioniq 5 N Infotainment Head Unit Lockup / Static Screen and Bluelink Telematics Dropouts?

Two related software problems affect the ccNC-generation head unit. The display intermittently goes to a static or snowy image and stops responding to touch for a minute or two, recurring roughly monthly on affected cars - this takes the climate controls, drive-mode menus and the… Repairs typically run $0-$1,500. Severity: low.