The 2025 Ioniq 5 is still very new, but early patterns from 2022-2024 models show issues with battery software/charging, ICCU failures, motor mounts, and rear differential/axle seal leaks on AWD variants — many under warranty now, but watch for these post-coverage.
ICCU (Integrated Charging Control Unit) Failure
Occasional · high severity
Typical onset: 10,000-40,000 mi
Symptoms: Complete loss of 12V power, vehicle won't start or charge, Dashboard warning lights, 'Check Electric Vehicle System' message, Loss of power steering, braking assist while driving in rare cases
Fix: ICCU replacement requires disconnecting high-voltage system, removing center console components. Hyundai has issued recalls and extended warranty coverage on some VINs. 3-5 hours labor if out of warranty.
Estimated cost: $1,800-2,800
Rear Differential Fluid Leaks and Axle Seal Failures (AWD)
Occasional · medium severity
Typical onset: 20,000-60,000 mi
Symptoms: Fluid pooling under rear of vehicle, oily residue on rear differential housing, Whining or grinding noise from rear motor/differential under acceleration, Reduced regenerative braking efficiency on rear axle
Fix: Rear axle seals fail due to heat and insufficient factory seal quality. Requires differential disassembly, seal replacement, new fluid. Some cases need entire rear drive unit if internal bearings contaminated. 4-6 hours labor for seals alone, 8-12 for full rebuild.
Estimated cost: $800-1,500 for seals; $3,500-5,500 for full rear drive unit
Motor/Transmission Mount Failures
Occasional · medium severity
Typical onset: 30,000-70,000 mi
Symptoms: Clunking or thumping during acceleration or deceleration, Vibration felt through floorboard, especially on uneven pavement, Visible tearing or separation of rubber mount material on inspection
Fix: Electric motor mounts wear prematurely due to instant torque stress. Front and rear mounts typically go together. Requires lifting powertrain slightly, 2-3 hours per mount. Aftermarket upgraded mounts available but void warranty.
Estimated cost: $600-1,200 per mount
High-Voltage Battery Charging Software Faults
Occasional · medium severity
Symptoms: Charging stops unexpectedly at DC fast chargers, often at 80% or specific kW thresholds, Charging speed significantly slower than rated (e.g., 50 kW instead of 220 kW), 'Unable to Charge' errors on display, requiring hard reset
Fix: Software bug in Battery Management System (BMS) or communication issue between ICCU and battery. Dealer reflash typically resolves, 1-2 hours diagnostic and update. Some cases require ICCU or BMS module replacement if hardware-related.
Estimated cost: $150-400 for software update; $1,500-2,500 if hardware replacement needed
12V Battery Premature Failure
Common · medium severity
Typical onset: 15,000-50,000 mi
Symptoms: Vehicle won't wake up or unlock, dead key fob despite fresh battery, Intermittent electrical gremlins: infotainment resets, camera glitches, Warning messages about 12V system, 'Charge 12V Battery' on display
Fix: OEM 12V battery (AGM, in trunk area) undersized for accessory load and ICCU draws. Replace with higher-capacity AGM, register new battery with vehicle computer. 1 hour labor.
Estimated cost: $300-500
Front Subframe Bushing Deterioration
Occasional · low severity
Typical onset: 40,000-80,000 mi
Symptoms: Clunking over bumps from front suspension, Steering feels loose or imprecise, wanders on highway, Uneven tire wear on inner edges of front tires
Fix: Front subframe bushings wear from weight of battery pack and torque loads. Requires subframe drop, bushing press-out/press-in. 6-8 hours labor for full subframe bushing replacement. Alignment mandatory afterward.
Estimated cost: $1,200-2,000
Headlight Condensation and LED Failures
Occasional · low severity
Symptoms: Water droplets or fog inside headlight housing after rain or car wash, DRL or turn signal LED segments not illuminating, Hyundai recall 24V-812 addresses some units with improper sealing
Fix: Factory headlight seal inadequate on some production runs. Dealer replaces entire headlight assembly under recall/warranty. If out of warranty, aftermarket seal repair possible but full replacement safer. 1-2 hours per side.
Estimated cost: $800-1,400 per headlight assembly
Owner tips
Keep ICCU and BMS software updated at dealer — many early bugs fixed via TSBs
Check rear differential fluid level every 20k mi on AWD models, look for leaks
Install a 12V battery tender if vehicle sits unused more than 2 weeks
Inspect motor mounts annually if you drive aggressively or launch frequently
Use DC fast charging sparingly (once a week max) to prolong battery longevity
Wait another year for long-term reliability data — 2025s are too new, but if warranty transferable and ICCU/battery updates confirmed done, it's worth considering with a solid pre-purchase inspection.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
Be the first to unlock repairs for the 2025 Hyundai Ioniq 5
Procedures haven't been generated for this vehicle yet. Become the founding sponsor and we'll generate expert-grade, step-by-step repair walkthroughs for every common job on it — free for every mechanic and DIYer who looks it up after, forever.
Hyundai Motor America (Hyundai) is recalling certain 2025 Ioniq 5 and 2026 Ioniq 9 vehicles. The fasteners for the rear suspension may loosen and detach, which can result in a loss of vehicle control.
Consequence: A loss of vehicle control increases the risk of a crash.
Remedy: Dealers will inspect and replace the rear suspension fasteners and perform a rear vehicle alignment, as necessary, free of charge. Owner notification letters are expected to be mailed July 17, 2026. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 303. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on May 20, 2026.
Hyundai Motor America (Hyundai) is recalling certain 2025-2026 IONIQ 5 and 2026 IONIQ 9 vehicles. The high voltage battery system may contain an improperly tightened bus bar, which can cause a short-circuit.
Consequence: An electrical short in the high voltage battery system increases the risk of a fire.
Remedy: Dealers will inspect and tighten the bus bar retention bolts and replace the battery system assembly, as necessary, free of charge. Owner notification letters were mailed April 3, 2026. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 294. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on February 7, 2026.
SEAT BELTS:FRONT:RETRACTOR · 25V797000
2025-11-18
Hyundai Motor America (Hyundai) is recalling certain 2025 IONIQ 5 vehicles. The seat belt retractors for the driver and front passenger seats may not be securely fastened.
Consequence: An improperly secured seat belt retractor may not function properly in a crash, increasing the risk of injury.
Remedy: Dealers will inspect and secure the seat belt retractors, as necessary, free of charge. Owner notification letters were mailed December 30, 2025. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 287. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on November 19, 2025.
SUSPENSION:CRITICAL FASTENERS · 25V605000
2025-09-12
Hyundai Motor America (Hyundai) is recalling certain 2025 IONIQ 5 electric vehicles. Certain rear suspension alignment adjustment bolts may have been improperly tightened, which can cause a loss of vehicle stability control.
Consequence: A loss of vehicle stability control increases the risk of a crash.
Remedy: Dealers will replace the adjustment bolts, align the wheels, and replace tires if necessary, free of charge. Owner notification letters were mailed October 10, 2025. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 284. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on September 13, 2025.
Hyundai Motor America (Hyundai) is recalling certain 2025 IONIQ 5 vehicles. The high voltage battery system may contain an improperly tightened bus bar, which can cause a short-circuit.
Consequence: An electrical short in the high voltage battery system increases the risk of a fire.
Remedy: Owners are advised to park their vehicles outside and away from structures until the recall remedy is complete. Dealers will inspect and repair the high voltage battery system, as necessary, free of charge. Owner notification letters were mailed August 25, 2025. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 280.
EXTERIOR LIGHTING:HEADLIGHTS · 25V373000
2025-06-03
Hyundai Motor America (Hyundai) is recalling certain 2025 Hyundai IONIQ 5 vehicles. The right-side headlight may have an incorrect headlight aim label, which can result in improperly aimed headlights. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."
Consequence: Improperly aimed headlights can result in insufficient illumination of the road, decreasing the driver's visibility and increasing the risk of a crash.
Remedy: Hyundai will mail owners a corrected label with inspection and installation instructions. Owners may bring their vehicle to a dealer for the repair, free of charge. Owner notification letters were mailed July 15, 2025. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 279.
SERVICE BRAKES, HYDRAULIC:POWER ASSIST:ELECTRIC:CONTROL MODULE:SOFTWARE · 25V235000
2025-04-11
Hyundai Motor America (Hyundai) is recalling certain 2025 Hyundai IONIQ 5 "N" vehicles equipped with left-foot braking (LFB) and N e-shift features. The integrated electronic brake (IEB) and vehicle control unit (VCU) software may cause reduced braking performance when LFB is activated. Additionally, the vehicle may continue to accelerate after the pedal is released and the vehicle's N e-shift feature is engaged.
Consequence: Reduced braking performance and unexpected, continued acceleration increase the risk of a crash.
Remedy: Owners are advised not to use the LFB or N e-Shift features until the remedy has been performed. The IEB and VCU software will be updated over-the-air (OTA) or by a dealer, free of charge. Owner notification letters were mailed April 25, 2025. This recall replaces NHTSA recall number 25V-065. Vehicles repaired under the previous recall will need to have the new remedy completed. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 277.
ELECTRICAL SYSTEM:WIRING · 25V064000
2025-02-06
Hyundai Motor America (Hyundai) is recalling certain 2025 IONIQ 5 EV vehicles. The rear floor wiring harness may contain an open circuit, which can result in the rear side air bag not deploying as intended.
Consequence: A rear side air bag that does not deploy as intended can increase the risk of injury in a crash.
Remedy: Dealers will inspect and replace the rear floor wiring harness, as necessary, free of charge. Owner notification letters were mailed March 12, 2025. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 274.
SERVICE BRAKES, HYDRAULIC:POWER ASSIST:ELECTRIC:CONTROL MODULE:SOFTWARE · 25V065000
2025-02-06
Hyundai Motor America (Hyundai) is recalling certain 2025 Hyundai IONIQ 5 "N" vehicles equipped with a left-foot braking (LFB) feature. The integrated electronic brake (IEB) and vehicle control unit (VCU) software may cause reduced braking performance when LFB is activated.
Consequence: Reduced braking performance can increase the distance required to stop the vehicle, increasing the risk of a crash.
Remedy: Owners who have not received the recall remedy are advised not to use the LFB feature until the updated remedy has been performed. Additionally, owners who have received the recall remedy are advised not to use the 'N' E-shift feature until the updated remedy has been performed. Dealers will update the IEB and VCU software, free of charge. Owner notification letters were mailed March 12, 2025. This recall is replaced by NHTSA recall number 25V-235. Vehicles already repaired under this recall will need to have the new remedy completed. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 275.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.