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Hyundai · Known Issues

2024 Hyundai Elantra Problems: 2 Known Issues

2024 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated September 2026

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Issue summary

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2024 Hyundai Elantra has 2 documented known issues, with 2 rated critical. The most serious are Hybrid Power Control Unit (HPCU) Overheating (Recall 26V308) ($0-$0 repair) and Phantom / False Automatic Emergency Braking and Forward Collision Activation ($0-$350 repair). DIY maintenance guides at au7o.io.

In This Article

  • Elantra Electrical1
  • Elantra Safety/Recalls1
  • Recalls8
  • FAQ
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In This Article

  • Electrical1
  • Safety/Recalls1
  • Recalls8
  • FAQ

All 2 Known Issues

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On the 2024-2026 Hyundai Elantra, the newest Elantra Hybrids are subject to a recall covering the hybrid power control unit, the assembly that houses the inverter and DC-DC converter and manages power flow between the high-voltage battery, the drive motor and the 12V system. The HPCU assembly may overheat. Thermal events in an inverter of this kind typically show first as a hybrid-system warning and a forced power derate, and can end in a loss of drive power; the underlying risk with any overheating high-voltage power electronics is a fire. This affects 2024-2026 Elantra Hybrid vehicles only - it is not a defect of the conventional 2.0L Smartstream Elantra, whose driveline has no HPCU at all.

Common Symptoms

  • Hybrid system warning lamp illuminates
  • Sudden reduction in available power / limp mode
  • Loss of drive power
  • Warning message to check the hybrid system

How to Fix

Free recall remedy. Under NHTSA campaign 26V308000 dealers install a software update to the HPCU at no charge - the software manages inverter thermal load rather than replacing hardware. Owners should verify VIN eligibility at nhtsa.gov/recalls and get the update promptly rather than waiting for a symptom, since the campaign is preventive. If the hybrid system warning lamp, a sudden power derate or a burning-electrical smell appears, stop driving and have the car towed rather than continuing.

Typical repair cost:$0 - $0

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Community Reported
High ConfidenceVerifiedReviewed Aug 2026

On the 2021-2024 Hyundai Elantra, the Forward Collision-Avoidance Assist (FCA) and Blind-Spot Collision-Avoidance systems can trigger hard automatic emergency braking when no real obstacle is present. Owners report sudden, unprompted braking at 40-65 mph on open road, plus false activation when a vehicle passes closely from behind in an adjacent lane (with Blind Spot set to Active Assist). The abrupt deceleration can cause tire skid and create a rear-end collision hazard. NHTSA has logged dozens of FCA/AEB complaints across 2021-2024 Elantras.

Common Symptoms

  • Sudden hard braking with no obstacle ahead
  • Red FCA warning flashes on dash
  • Braking triggered by a car passing from behind in an adjacent lane
  • Tires skid from abrupt deceleration
  • Adaptive cruise braking for nonexistent threats
  • Dealer cannot reproduce the fault

How to Fix

No full recall as of mid-2026; Hyundai addresses cases individually with radar/front-camera recalibration and FCA control-unit software updates via TSB. Sensitivity can be reduced or FCA temporarily disabled in settings, but it re-enables each key cycle. Document incidents and file an NHTSA complaint; persistent units may qualify under state lemon law. Calibration/software updates are typically warranty-covered.

Typical repair cost:$0 - $350

Research This Issue

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Community Reported
High ConfidenceVerifiedReviewed Jun 2026
NHTSA Recalls8 recalls

SEAT BELTS:FRONT

Hyundai Motor America (Hyundai) is recalling certain 2022 Elantra and Elantra HEV vehicles. In the event of a crash, the front passenger-side seat belt pretensioner may explode upon deployment.

Campaign #22V12300003/03/2022

SEAT BELTS:FRONT

Hyundai Motor America (Hyundai) is recalling certain 2021-2022 Elantra and 2020 Accent vehicles. In the event of a crash, the front driver and passenger-side seat belt pretensioners may explode upon deployment.

Campaign #22V21800001/04/2022

SEAT BELTS:FRONT

Hyundai Motor America (Hyundai) is recalling certain 2020-2022 Accent, 2021-2022 Elantra, and 2021-2022 Elantra HEV vehicles. In the event of a crash, the front driver-side and/or passenger-side seat belt pretensioners may explode upon deployment.

Campaign #22V35400019/05/2022

AIR BAGS:FRONTAL

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Other Hyundai Models

Hyundai Sonata31Hyundai Tucson23Hyundai Veloster22Hyundai Palisade19Hyundai Santa Cruz17Hyundai Santa Fe17

Frequently Asked Questions

What are the most common Hyundai Elantra problems?

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2024 Hyundai Elantra has 2 documented issues. The most frequently reported are: Hybrid Power Control Unit (HPCU) Overheating (Recall 26V308), Phantom / False Automatic Emergency Braking and Forward Collision Activation. Of these, 2 are rated critical and should be addressed promptly.

Is the Hyundai Elantra reliable?

The 2024 Hyundai Elantra has 2 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 2 issues are rated critical: Hybrid Power Control Unit (HPCU) Overheating (Recall 26V308) and Phantom / False Automatic Emergency Braking and Forward Collision Activation. 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 Elantra problems?

Repair costs for known Hyundai Elantra issues range from $0 to $350, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Hybrid Power Control Unit (HPCU) Overheating (Recall 26V308), typically costs $0-$0 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2024-2026 Hyundai Elantra Hybrid Power Control Unit (HPCU) Overheating (Recall 26V308)?

The newest Elantra Hybrids are subject to a recall covering the hybrid power control unit, the assembly that houses the inverter and DC-DC converter and manages power flow between the high-voltage battery, the drive motor and the 12V system. The HPCU assembly may overheat. Therma… Repairs typically run $0-$0. Severity: high.

What is the 2021-2024 Hyundai Elantra Phantom / False Automatic Emergency Braking and Forward Collision Activation?

The Forward Collision-Avoidance Assist (FCA) and Blind-Spot Collision-Avoidance systems can trigger hard automatic emergency braking when no real obstacle is present. Owners report sudden, unprompted braking at 40-65 mph on open road, plus false activation when a vehicle passes c… Repairs typically run $0-$350. 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 compiled from NHTSA recalls, manufacturer TSBs, automotive forums, and AI-assisted research. No aggregated owner-report counts available for this vehicle yet.

Hyundai Motor America (Hyundai) is recalling certain 2022 Elantra N and 2022-2023 Elantra vehicles. The emblem on the cover of the driver's front air bag may not have been welded properly, which can result in the emblem detaching upon deployment.

Campaign #22V63200018/08/2022

BACK OVER PREVENTION: SENSING SYSTEM: CAMERA

Hyundai Motor America (Hyundai) is recalling certain 2021-2022 Santa Fe, Santa Fe HEV, Elantra, Elantra HEV and 2022 Elantra N and Santa Fe PHEV vehicles. Due to a damaged printed circuit board, the rearview camera image may fail to display. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."

Campaign #24V87900021/11/2024

+ 3 more recalls. Check all on NHTSA.gov

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