Hyundai is recalling 54,337 Elantra Hybrid sedans in the U.S. because a flaw in the hybrid power control unit can overheat under load and, in rare cases, start a fire. The Hyundai Elantra Hybrid recall affects model years 2024-2026, and the fix is software, not hardware – a reminder that modern cars can be brought down by code just as easily as by a bad bolt.
The recall centers on a MOSFET transistor inside the HPCU. Most affected cars are expected to show less dramatic symptoms, such as failing to start or dropping into limp mode, but regulators say the same defect can also cause localized thermal damage.
What Hyundai says is wrong with the HPCU
According to the investigation, the issue is not a traditional mechanical failure. The control software may not cool the HPCU aggressively enough during heavy use, which lets temperatures climb until the transistor gets stressed. That kind of failure is awkward for automakers because the parts may be fine on paper, while the logic telling them how to behave is the real problem.
Hyundai began looking into the matter in late 2024 and later examined an incident vehicle along with several technical tear-downs in 2025. The company says the repeated failure pattern pointed to the same component rather than a random one-off defect.
How many incidents have been reported
So far, Hyundai says it knows of four incidents. Only one involved a fire, and there have been no reported injuries or crashes. That is a relatively small number for a recall this size, but it is exactly the sort of low-frequency, high-consequence problem that gets automakers and regulators moving fast.
It also fits a broader pattern in the hybrid world: the more software takes over thermal management, braking, and power delivery, the more a bug can masquerade as a hardware failure. Hyundai was already dealing with reports of Tucson Hybrid models braking on their own, also tied to software, which does not exactly scream ”trust us, the update will fix everything.”
What owners should expect from the recall
Hyundai plans to address the defect with an HPCU software update that changes how cooling is managed under load. For owners, that means a dealer visit and hopefully a boring afternoon, not a smoking driveway.
- Model: Elantra Hybrid
- Model years: 2024-2026
- Vehicles recalled: 54,337
- Fault: overheating MOSFET in the hybrid power control unit
- Remedy: software update for HPCU cooling control
Hyundai’s hybrid software problem may not stop here
The uncomfortable part for Hyundai is that this does not look like a one-off bad part. If the same family of software errors is showing up across more than one hybrid model, the company may be dealing with a calibration problem rather than a single recall item. That is cheaper to fix than redesigning hardware, but it is also the kind of issue that can keep coming back if the software stack is stretched too far.