Hyundai Tucson Hybrid loss of power problems

Filed Oct 10, 2026 · Transmission · NY

While driving on the highway, my vehicle suddenly jerked, lost power, and displayed a “Check Hybrid System” warning. The diagnostic codes P112000 and P064A00, which were recorded by Hyundai Bluelink following today’s malfunction.

Filed Aug 19, 2026 · Driver assistance, Engine · MA

System/Component Failed & Inspection: The vehicle suffers from recurring failures across the engine, powertrain, electronic throttle control, and exhaust gas recirculation (EGR) control systems (DTCs P0524, P0642, P2118, P022100). The vehicle is fully available for inspection upon request. Safety Risk: While driving, the vehicle suffered a complete, sudden loss of motive power on an active highway entrance ramp. The engine stalled in moving traffic with zero throttle response, creating an immediate collision hazard before requiring a tow. Confirmation by Dealer: Technicians formally confirmed these defect patterns. In May 2026, diagnostics logged major engine and emission/EGR control codes, but corporate refused goodwill repair. In August 2026, the highway stall recurred. Diagnostics confirmed active low oil pressure and throttle failure codes, which the dealer resolved by applying 4 factory ECU software updates under TSB 25-01-010H. Service personnel explicitly confirmed these engine control issues are manufacturing defects, not wear-and-tear or mileage-related. Inspections: Inspected, diagnosed, and serviced by authorized dealership service department technicians during both the May and August 2026 failure events. Warning Symptoms & History: Engine issues began at 341 miles when purchased new (settled). In May 2026, check engine lights returned with diagnostic codes for engine and EGR/emissions systems. In August 2026, total power loss occurred, preceded by check engine, forward collision camera, and radar sensor warnings.

Filed Aug 6, 2026 · Acceleration, Electrical · CA

While driving my 2022 Hyundai Tucson Hybrid, the vehicle suddenly lost power, began shaking, and all warning lights illuminated at once. The car would not accelerate properly and became unsafe to operate in traffic. After pulling over and restarting the vehicle, the warnings cleared, but the issue has occurred more than once. It first occurred 3/25/26. The dealer was not able to reproduce the issue but found numerous faults and reset them. This is a serious safety concern because the vehicle can unexpectedly lose motor power while driving, creating a risk of collision. The problem is intermittent and unpredictable.

Filed Aug 4, 2026 · Engine · MI

I am reporting a critical Exhaust Gas Recirculation (EGR) valve and electrical circuit failure on my 2022 Hyundai Tucson Hybrid. The failure resulted in the check engine light illuminating, diagnostic codes identifying an EGR system malfunction, and visible corrosion found within the EGR connector and extension harness. This component breakdown causes severe performance risks, risk of sudden loss of engine power, and compromises vehicle safety. Diagnostic & Technical Details: Error Codes Captured: Diagnostic trouble codes in the P0400 series (EGR system flow/circuit malfunction) along with connector/wiring degradation were confirmed during inspection. Root Cause & Symptoms: The failure stems from degradation and electrical shorting risks in the EGR valve assembly and its immediate wiring harness connection. Manufacturer Response & Escalation Denial: When addressing this failure, I discovered that Hyundai has acknowledged widespread EGR valve assembly defects, electrical short risks, and solder flux contamination issues across multiple model years and production lines (such as the federal safety agency Campaign 24V‑308 and subsequent service campaigns like 9B3). However, Hyundai restricts safety recall and warranty coverage strictly based on narrow VIN manufacturing parameters, leaving owners with identical, failing hardware to shoulder exorbitant out-of-pocket repair costs—in my case, quoted at over $2,013. Because a compromised EGR system and corroded electrical harness can cause sudden engine performance failures while driving in traffic, and because Hyundai is limiting its accountability through arbitrary production windows, I am requesting that the federal safety agency investigate this systemic EGR and harness failure on 2022 Tucson Hybrid models and compel Hyundai to expand its safety coverage and reimburse affected owners for necessary repairs.

Filed Jul 29, 2026 · Electrical, Engine · WI

I am reporting a critical Exhaust Gas Recirculation (EGR) valve failure on my 2023 Hyundai Tucson Hybrid. The failure resulted in an immediate loss of engine power, reduced vehicle performance, reduced fuel efficiency, and the vehicle entering limp mode while driving, creating a significant safety hazard in traffic. Diagnostic & Technical Details: Error Codes Captured: Diagnostic trouble codes in the P0400 series (EGR system flow/circuit malfunction) were confirmed during diagnostic inspection. Root Cause: The component failure is directly linked to an internal short circuit in the EGR valve assembly, caused by solder flux contamination during manufacturing. Manufacturer Response & Escalation Denial: When contacting Hyundai regarding this failure, I was informed that my vehicle’s VIN is "not included in Safety Recall 260" (the federal safety agency Campaign 24V‑308). I formally escalated this claim to Hyundai Corporate, but my request for reimbursement and coverage was explicitly denied on the grounds that my VIN falls outside the designated recall parameters. However, this exact failure mode, part assembly line, and manufacturing defect (solder flux contamination) are identical to the safety defect described in Recall 260 as well as Hyundai Service Campaign 9B3. Hyundai is restricting coverage based on narrow VIN manufacturing windows despite identical, defective parts being installed across non-recalled vehicles. Because a sudden EGR failure causes unexpected loss of power while traveling in traffic, and because Hyundai Corporate has refused to cover this out-of-pocket repair, I am requesting that the federal safety agency investigate this issue and compel Hyundai to expand the scope of Recall 260 to protect affected owners and mandate reimbursement for out-of-pocket repair costs.

Filed Jul 21, 2026 · Electrical, Engine · MD

I purchased my vehicle from Ideal Hyundai on 04/23/26. On 06/22/26 (less than 2 months later), I was driving to work and the car started to lose power. The display said to check hybrid system and stop safely. After 10 minutes, I was able to drive the car 3 more miles to work. I took it to Ideal Hyundai the next day. I got the car back on 06/26/26 after they said they address the issue and the open recall. Two weeks later, on 07/23/26 I was driving home on a busy highway when the car began to lose power again. We were able to get to the side of the road but were still in a dangerous position. Within minutes, the car's power went out and fuel drained from the car. We used Hyundai Roadside Assistance and they towed it to the nearest Hyundai dealer (Antwerpen). They told me the next day that the car had serious issues and another recall. They said they'd repair it by the end of the week. I also had called the Hyundai corporate office on 07/13/26. They said someone would get back to me in 2-3 business days. They have not done so yet. When I called yesterday, they said someone will get back to me tomorrow (9 business days after my initial call). No one from Antwerpen is answering the phone. I just got a text from them on 07/17/26 saying the car would be ready on 07/20/26 (it's not ready). Because the car lost power in the middle of a busy highway and has lost power twice in less than a month, I am afraid to drive it and believe it has issues that make it unsafe.

Filed Jul 7, 2026 · Transmission · WA

My 2026 Hyundai Tucson Hybrid has lost drive/propulsion three times at freeway speed within the first month of ownership. The loss of power is sudden, and the vehicle does not re-engage drive for approximately 15–20 seconds. On July 5, 2026, at approximately 60 mph, the vehicle lost propulsion entirely and went limp in live freeway traffic, forcing me to coast off the freeway. Drive was only restored by shutting the engine off and restarting it. Two earlier occurrences happened on July 5, 2026 (earlier in the same drive) and on June 14, 2026. The vehicle is currently at the dealer service department; no fault codes were found and the technician could not reproduce the condition. This is an intermittent but repeatable loss of vehicle control at highway speed and I consider it a serious safety hazard with crash potential. Hyundai Consumer Affairs case #xxxxxxx is open on this vehicle.

Filed Mar 31, 2026 · Engine, Fuel system · NC

Car is a Gas Hybrid (not plugin). 3 occurrences over the last couple of months. Car emits a warning sound and a message on the dash says "Check Hybrid System. Stop Safely". Basically right after this message the car starts losing power and stops. Doesn't matter if on freeway or not. You need to find a place to pull over or you stop traffic wherever you are. Looks like Hybrid Battery is completely drained. Can not be re-created. Dealer has it now for the 3rd time. Dealer in the past have not been able to find cause/cure since this issue is not posting any errors to the onboard diagnostic system. Temporary 'fix' is to power off car, and power back on. Looks like this is a 'known' issue though as its being reported by quite a few people online.

Filed Jan 15, 2026 · Acceleration, Engine · MA

On [XXX], my 2025 Hyundai Tucson Hybrid displayed a red dashboard alert instructing me to “stop vehicle and check brake system.” The vehicle experienced brake system warnings and a loss of power steering, requiring me to pull over. I immediately contacted Hyundai through the Bluelink system, and the Bluelink operator confirmed that multiple fault codes were visible in Hyundai’s system. I scheduled a Hyundai service appointment at the next available date. On [XXX], before the scheduled service appointment could occur, the vehicle experienced a sudden and total electrical failure while traveling at highway speed (approximately 65 mph). The vehicle lost propulsion and displayed brake system warnings. After reaching the shoulder, the vehicle also lost hazard lights while disabled in heavy rain. The vehicle was towed via Hyundai Bluelink to a Hyundai dealership and removed from service. The occupants at the time of the incident included my wife and my minor child. The loss of propulsion, braking warnings, power steering, and hazard lights created a serious risk of a rear-end collision and injury. Due to repeated and escalating safety-related failures involving electrical, braking, and steering systems, I no longer consider the vehicle safe to operate. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 31, 2025 · Electrical, Engine · NC

While driving the engine would not turn on and we were stuck EV MODE. Lost power , had to pull off to shoulder of road and had to turn vehicle off and back on in order for car to move.