2027 Hyundai Palisade Hybrid

The contact owns a 2027 Hyundai Palisade Hybrid. The contact stated that while merging into traffic from a complete stop and depressing the accelerator pedal, the vehicle failed to respond. The contact stated that the brakes engaged independently, causing the vehicle to almost be involved in a crash. A dealer was contacted. The vehicle was taken to the dealer to be diagnosed; however, the diagnostic result was not provided. The manufacturer was not notified of the failure. The approximate failure mileage was 1,800.

NHTSA ID

11775459

Incident

Nov 3, 2026

Mileage

1,800 mi

Check hybrid System warning comes on during initial start of the day. First service visit for problem had a bad water pump replaced on 1 of the electric motors at ~400 miles. Dealership said this resolved the problem, but the same problem is now recurring at 780 miles. Don't know how safe it is to drive vehicle.

NHTSA ID

11767991

Incident

Sep 28, 2026

Vehicle's hybrid system is malfunctioning stating a warning of "stop vehicle and check power supply".

NHTSA ID

11766129

Incident

Aug 21, 2026

On August 27, 2026, my 2027 Hyundai Palisade Hybrid Calligraphy displayed a "Stop Vehicle and Check Power Supply" warning and was taken to the dealership. The vehicle has been at the dealership for 14 days with no resolution. The dealer retrieved two fault codes: P0C381C (DC/DC Converter Temperature Sensor Circuit — non-active/historical) and U131787 (Lost Communication with Hybrid Control Module — currently active). Code P0C381C does not exist in Hyundai's current DTC list. Hyundai Techline was contacted and advised the dealer to not replace any parts, hold the vehicle, and place the customer in a loaner. Hyundai is aware of the problem and working on a fix. As of September 10, 2026, the dealer identified that a campaign was launched on August 28, 2026 to update the MCULDC module to correct code P0C381C. The dealer confirmed the ROM ID matches the TSB and the software update is ready to apply at the dealership. However, Hyundai Techline has not responded to the open tech case to authorize the update, leaving the vehicle stranded at the dealer. This issue is consistent with Hyundai Recall 301 (NHTSA Campaign 26V308), issued May 2026 for 54,337 Elantra Hybrid vehicles for the same HPCU MOSFET overheating defect producing identical warning messages and symptoms. The Palisade Hybrid uses the same Hyundai Mobis-supplied HPCU platform. The fix exists, the dealer is ready to apply it, and Hyundai Techline authorization is the only thing preventing resolution.

NHTSA ID

11763395

Incident

Aug 27, 2026

My new 2027 Hyundai Palisade Hybrid experienced a hybrid-system/power-supply malfunction with fewer than 500 miles. The Hyundai dealer diagnosed DTC P0C381C on August 28, 2026 and has retained the vehicle since that date. Hyundai Motor America has issued Limited Coverage Campaign LA39, titled “HPCU Warning Light On – HPCU Software Update – DTC P0C381C.” However, Hyundai's communication states that LA39 is currently for impacted dealer-stock vehicles only. It states that already-retail vehicles must wait for a separate campaign that is “pending review/approval” and that those customers should be placed in alternative transportation. I am concerned that Hyundai is presently correcting affected unsold inventory while vehicles already sold to consumers that actually experience P0C381C remain unrepaired pending approval of a separate retail campaign.

NHTSA ID

11763202

Incident

Aug 28, 2026

"Stop vehicle and check power supply" warning lights accompanied and panic alarm goes off on new 2027 palisade hybrid calligraphy with 72 miles. The passenger rear brake grabs much more than the others which you can barely feel. Johnson Hyundia of Apex,NC, where we purchased the vehicle tell us not to bother bringing it to them because unless it has a fault code or constant message, they can't do anything. Hyundia corporate gave me a case number but acted like they never heard of it happening to anyone else. Reddit posts have at least 20 other cases of this same thing happening to new hybrid vehicles.

NHTSA ID

11761993

Incident

Sep 1, 2026

Certain vehicles equipped with internal combustion engines may exhibit higher-than-expected engine oil consumption. This bulletin provides the inspection and repair procedures for vehicles exhibiting this condition. All internal combustion engines consume engine oil as part of normal engine operation. Oil consumption rates may vary based on mileage, operating conditions, driving habits, and maintenance history. Hyundai recommends following the prescribed maintenance schedule and periodically checking the engine oil level using the dipstick to maintain proper engine oil level.

Certain Palisade Hybrid (LX3 HEV) vehicles may display a Hybrid system warning light on the instrument cluster with Diagnostic Trouble Code (DTC) P0C381C when the vehicle is parked for long durations. Technical Service Bulletin (TSB) 26-01-079H provides instructions to perform a Hybrid Power Control Unit (HPCU) software update to resolve this condition.

Certain Palisade Hybrid (LX3 HEV) vehicles may display a Hybrid system warning light on the instrument cluster with Diagnostic Trouble Code (DTC) P0C381C when the vehicle is parked for long durations. This bulletin provides instructions to perform a Hybrid Power Control Unit (HPCU) software update to resolve this condition.

Certain Palisade Hybrid (LX3 HEV) vehicles may display a Hybrid system warning light on the instrument cluster with Diagnostic Trouble Code (DTC) P0C381C when the vehicle is parked for long durations.

Some Palisade Hybrid (LX3 HEV) vehicles may illuminate the hybrid system warning light with Diagnostic Trouble Codes (DTC) P0C381C when the vehicle is parked for extended duration. This bulletin provides instructions to update the Hybrid Power Control Unit (HPCU) software to improve the detection logic for DTC P0C381C.

Some Palisade (LX3) and Palisade Hybrid (LX3 HEV) vehicles may exhibit a 12-volt battery drain due to the passive entry feature of the Digital Key 2 premium causing repeated wakeup of the vehicle. This bulletin provides instructions to perform software updates for the Ultra-Wide Band (UWB) and Body Domain Control (BDC) modules.