Power Train Problems of Hyundai Santa Fe - part 1

I own a 2023 Hyundai Santa Fe calligraphy awd equipped with the 2. 5l turbo engine and 8-speed wet dual-clutch transmission. At approximately 39,900 miles, the check-engine light illuminated. Hyundai bluelink diagnostics reported powertrain/tcu diagnostic trouble code p1c2d03, identified as a high-pressure electric oil pump motor position sensor fault. I am concerned because this same diagnostic trouble code and high-pressure electric oil pump/transmission issue was associated with Hyundai safety recall 236 (NHTSA recall 22v746) involving certain earlier Santa Fe model years. Hyundai's recall documentation described the possibility of the transmission high-pressure electric oil pump malfunctioning and causing loss of motive power while driving. My vehicle is a 2023 model and therefore was not included in that earlier recall, but Hyundai has subsequently issued technical service information covering 2021–2023 Santa Fe vehicles equipped with the 2. 5t engine and 8-speed wet dct, including vehicles displaying dtc p1c2d03. The current Hyundai service procedure indicates that affected vehicles may require transmission replacement. I have stopped driving the vehicle because of my concern about a possible loss of propulsion and have scheduled an appointment with a Hyundai dealership for diagnosis. At this time, I have not experienced a loss of motive power or an accident. I am reporting the issue because a 2023 vehicle outside the original recall population is displaying the same fault code associated with the previously recalled transmission condition. I believe NHTSA should evaluate whether the affected population should include additional model years.

See all problems of the 2023 Hyundai Santa Fe 🔎.

Our vehicle does this all the time and has done so for almost two years. After starting the vehicle and then shifting to a gear, either drive or reverse. The vehicle does not always go into gear. When you take your foot off the brake to push on the accelerator, the vehicle will start to roll in the opposite direction if you are on a very small incline in the opposite direction. If you are on flat ground, the car will not move for a few seconds. If the incline is in the direction of your selected gear, you start rolling in that direction with no power from the transmission. In one to three seconds you get power to the transmission. This happens at any time of the day, from the very first start up, to anytime during the day when in use. If you stop to get gas and when you restart the vehicle it can happen. We have almost hit other cars and people several times from rolling backwards when we have drive selected because the transmission does not properly engage. Everytime it happens I say to the car, why are you doing this? the only reason we haven't hit anyone or another car is because I hit the brakes again very quickly once we start rolling backwards after we do not start going forward. Not sure if it is associated or not, but driving through the parking lot a few times in drive. We have lost all power to the transmission. You are driving along and without any visual indications or sounds, you just start slowing down. If you press on the gas more, it does nothing to increase the speed of the vehicle. It has only happened once to us on a road going 45 mph. The power came back after a few seconds.

See all problems of the 2024 Hyundai Santa Fe 🔎.

My car is consuming an immense amount of oil, the manufacturer recommends oil changes every 7,500 miles, I get an oil change less than 3,000 miles and on my last oil change I was told that there are oil shavings in my oil filter. I just got the sc9c2 update and now my engine is knocking. Car drives super rough and has signs of rod bearing failure. My engine is the theta ii 2. 4gdi, a class action lawsuit was filed against Hyundai but my car wasn't included. I don't understand how Hyundai can know about this issue with this engine and not cover replacement. A car should at the very least last for the life of the loan, I am going to end up with no car and still making payments.

See all problems of the 2020 Hyundai Santa Fe 🔎.

On 3 separate occasions the vehicle has suddenly quit going. Twice going through an intersection after taking off. The third time going up hill near my house. The car would only go 10 mph. A message would come up on the dash that reads " transmission system error, check transmission oil immediately. That was not the problem. The Hyundai dealership performed a recall update on the computer the first time. But that didn't solve the problem as a week later the same thing happened . Again the car was towed to the dealership. This time another transmission service was performed according to a tech line information. After retrieving my car from the dealership I drove it for less than a week and the same thing happened. The car was towed back to the dealership again. Now the dealership says they can't do any repairs as the computer will not store any malfunction codes so they will know what to repair. I have been in contact with Hyundai motor America and a case file has been established. " 43176412 ". Hyundai will not accept any responsibility for placing a computer in a car that will not retain a mil code. Hyundai now tells me they have done all they can and for me to get my car from the dealership and drive it. That is ridiculous. Hyundai wants me to put myself in danger of having a wreck because the car loses power in front of traffic behind me. People start slamming on brakes to keep from hitting me and blowing their horns. I'm also afraid of some loose cannon out there having road rage at me because I can't get out of the way. As for the car and Hyundai , no mention of the shortcomings of the computer was mentioned until the 3rd time the car was towed back to the dealership. Also, there is some type of serious problem with the transmission which Hyundai is failing to be concerned with . This is a dangerous situation. Do I need to be seriously injured or worse before Hyundai addresses this issue ?.

See all problems of the 2025 Hyundai Santa Fe 🔎.

My vehicle recently received the Hyundai 9c2 emissions upgrade they required and since then the vehicle has had predictable acceleration issues for the first several minutes after the vehicle. While trying to slowly accelerate the vehicle with unpredictably lurch forward. Many people have been reporting this.

See all problems of the 2019 Hyundai Santa Fe 🔎.

Known as an issue with Hyundai, but unresponsive to correct because no diagnostic code is sent. Transmission will shift extremely hard from 1st to 2nd gear randomly. In keeping track of the mileage, this appears to happen every 200 miles or so. Also, it faild to upshift correctly, making the entire car shudder. Also, at times it will not go into reverse gear. On one occasion, after finally doing so, it slammed so hard into reverse I almost collided with the car behind me.

See all problems of the 2017 Hyundai Santa Fe 🔎.

2024 Hyundai Santa Fe VIN [xxx], June 2024 build, 62k miles. Vehicle experienced total loss of power and drive, matching NHTSA recall 24v-529 / 263 for dct failure. Dealer is refusing to perform recall, refusing to provide diagnostic codes via email, and demanding title and all service records before any work. Dealer claims new engine needed but won’t provide proof. This is a safety defect and dealer is violating recall law. " information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Bought this as a used vehicle with around 77k miles. The SUV was running fine for a little while until I drove onto the highway. It eventually began to bog down and there was hesitation and jumping instead of acceleration. This continued my entire trip home with the check engine light on. The car was only driven for about 300-400 miles in the time I had it. When I brought it to have an oil change, they found metal shavings in the oil. From what I’ve been reading, this has been a common problem for this vehicle. It has been sitting in a Hyundai service center for at least a month now with no real responses from Hyundai themselves. They told me they would not fix the problem due to lack of maintenance from prior owners and that they were marking my title (doesn’t make sense since I bought this with a clean title). According to what Hyundai told me, this issue was brought up by a previous owner in January 2026 with no repairs. How can you change the status of my title while refusing to repair a problem caused by a manufacturers defect?.

See all problems of the 2018 Hyundai Santa Fe 🔎.

Symptoms are those described in Hyundai recall 236 (delayed shifting,hesitation, stalling). Vehicle has had multiple tsp services at Hyundai but symptoms persist intermittently. Software updates do not fix issue. Hyundai dealer has no other remedies.

See all problems of the 2022 Hyundai Santa Fe 🔎.

While operating the vehicle, the vehicle suddenly began severely hesitating and stalling. During the incident, engine rpm surged to approximately 6,000 rpm and accelerator pedal response became abnormal. The vehicle was not responding normally to accelerator input, which significantly affected the ability to operate the vehicle safely. The vehicle subsequently recorded diagnostic trouble code p0304 – cylinder 4 misfire detected. The abnormal operation of the vehicle during the incident was also captured on video. The vehicle was taken to an authorized Hyundai dealership for diagnosis. The dealership has advised that because the condition is not currently occurring and they have been unable to duplicate the problem, they may be unable to diagnose or repair the vehicle. The safety concern is not simply an illuminated check-engine light or a stored p0304 code. The concern is the combination of severe hesitation/stalling, abnormal accelerator response, and the engine surging to approximately 6,000 rpm while the vehicle was being driven. The cause of the condition has not been identified and, at the time of this complaint, the vehicle has not been repaired for the underlying problem. I am concerned that this condition could recur without warning while accelerating, entering or crossing traffic, or traveling at highway speeds. A recurrence could result in an inability to accelerate normally, unexpected vehicle behavior, loss of normal vehicle operation, or a collision. Hyundai has been notified of the issue and I have requested further technical investigation of the engine misfire as well as the transmission/tcu and electronic throttle/accelerator systems due to the high-rpm event and abnormal accelerator response. I am submitting this complaint because this appears to be a potentially serious safety-related defect and I want NHTSA to have a record of the incident and determine whether similar stalling, high-rpm, acceleration, transmission, or engine-misfire.

Cold-start hesitation & rough shifting: following the 9c2 ecu update, my vehicle is experiencing a brief period of throttle hesitation, rough shifting, or jerky transmission behavior specifically during cold-start operations.

Update odi complaint number: 11759237 subsequent actions and manufacturer refusal to remediate safety defect: ?following the [xxx], acute safety incident—where the vehicle lost motive power and entered severe limp mode on [xxx] immediately upon release from sheehy Hyundai of chantilly—the vehicle remained in dealer custody for 11 days (August 20–August 31, 2026). ?failure to diagnose core defect: despite recurring total power loss, active diagnostic trouble code p00af00 (turbocharger boost control module performance), and four consecutive turbocharger destructions within 20,000 miles, the authorized dealership refused to conduct internal engine diagnostics, drop the oil pan, inspect the oil filter, or perform borescope checks. ?physical contamination documented: on August 29, 2026, an on-site physical inspection confirmed sparkling metallic particulate suspended in the engine oil on the dipstick and substantial oil blow-by/intrusion into the turbocharger air intake line. ?formal denial of safety/warranty coverage: on August 31, 2026, dealership management and Hyundai motor America (consumer affairs case #[xxx]) formally denied warranty assistance and refused engine teardown under the theta ii lifetime engine warranty settlement. Coverage was declined citing "outside influence" due to an aftermarket turbocharger assembly, while Hyundai refused to investigate the underlying engine failure contaminating and destroying the forced-induction system. ?evidence preservation: on August 31, 2026, the vehicle was towed to an independent facility to mitigate road hazards, conduct teardown diagnostics, and preserve the engine oil/filter for iso-accredited spectrographic laboratory analysis. ?the manufacturer released an unsafe vehicle into traffic on August 20, 2026, and subsequently refused to investigate or remedy a documented internal engine failure that creates sudden, recurring loss of motive power. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

The vehicle suffers from recurring, sudden loss of motive power and transitions into engine "limp mode" while driving in active, heavy traffic. This severe drivability defect has occurred on four separate occasions under diagnostic trouble code (dtc) p00af00 (turbocharger/supercharger boost control "a" module performance) and related boost/map faults (p0234). During these episodes, the vehicle abruptly loses acceleration capability without warning, creating an acute collision risk when navigating highway traffic and intersections. The turbocharger assembly has required replacement three separate times due to recurring oil contamination from the engine crankcase. Despite meticulous maintenance (documented synthetic oil changes every 3,000–5,000 miles since new), the manufacturer and dealership have repeatedly blamed peripheral turbo components rather than diagnosing or repairing the root cause (I suspect excessive engine crankcase pressure/piston ring blow-by based on the significant oil deposition on the turbo, map sensor, and pooling in the intake line).

Vehicle was brought to an authorized dealership for service, and while there campaign 9c2 (ecu software update for theta ii emissions improvement) was performed. Immediately following this software update, the vehicle developed drivability degradation, specifically engine stutter/hesitation and rough transmission shifting during cold starts. When attempting to accelerate in the first few minutes of driving, the vehicle delays engagement and then suddenly surges or lurches forward unpredictably. This creates a safety hazard, as the unpredictable power delivery and lag prevent the vehicle from accelerating safely when merging into traffic or turning across oncoming lanes, placing occupants at an immediate risk of a collision. The software logic error is fully reproducible every time the vehicle has sat long enough to cool down. The dealership confirmed the update was applied. There were no warning lamps or symptoms prior to the 9c2 update; the failure was caused directly by the manufacturer's campaign software modification to the engine control unit (ecu). The vehicle and its ecu are available for inspection upon request.

On multiple occasions the error “transmission system error check transmission oil immediately” have taken vehicle to dealership 3 separate times. Believe entire unit to be faulty.

1. Component/system failure & availability: the failed component is the engine's internal camshaft variable valve timing (cvvt) phaser backing bolt within the 3. 3l v6 engine assembly. An internal factory bolt unthreaded, backed out, and physically pierced directly through the upper valve cover. The vehicle and intact failed engine are currently located at an authorized Hyundai dealership service center in [xxx], and remain fully available for immediate physical inspection by federal investigators upon request. 2. Safety risk: an internal engine bolt unthreading and puncturing through the valve cover creates an extreme safety hazard. A high-velocity metal bolt piercing the engine casing causes immediate engine seizure, sudden loss of motive power at highway speeds, loss of power steering/braking assistance, and massive pressurized oil discharge directly onto red-hot exhaust manifolds, posing a severe risk of sudden catastrophic vehicle fire and multi-vehicle highway collisions. 3. Dealer/independent confirmation: yes. The failure was formally inspected, reproduced, and confirmed by an authorized Hyundai dealership service department. Dealership technicians logged official diagnostic findings under prior authorization case #xxx. 4. Inspection by manufacturer/others: yes. The defect was inspected and escalated directly to Hyundai motor America (hma) corporate engineering. Corporate engineering officially verified the defect and issued techline case #xxx, confirming that an internal factory cvvt backing bolt unthreaded and pierced the valve cover, recommending a full engine replacement. 5. Warning lights & prior symptoms: there were no prior warning lamps, check engine lights, unusual sounds, or advance warning symptoms prior to the failure. The internal hardware failure occurred suddenly and without warning while operating the vehicle at standard operating parameters. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

See all problems of the 2016 Hyundai Santa Fe 🔎.

My 2017 Hyundai Santa Fe, purchased new from lynnes Hyundai in February 2017, has approximately 93,000 miles. The vehicle previously developed a significant oil-consumption/engine problem that was diagnosed by Hyundai, and Hyundai replaced the engine with a remanufactured engine. Approximately two weeks after the engine replacement, the check-engine light illuminated and dtc p1326 was identified. The dealership replaced the knock sensor. Approximately two weeks later, the check-engine light illuminated again with a recurring p1326 condition. The vehicle is currently at lynnes Hyundai and has been there approximately three weeks while they attempt to determine the cause. Hyundai techline is involved. Prior to the current repair visit, while traveling approximately 60 mph, the vehicle experienced a very forceful hesitation that jerked the vehicle. I immediately slowed down and pulled onto the shoulder. The vehicle continued to hesitate intermittently while I drove slowly to safety. I was concerned that the vehicle could lose power or shut down while I was driving at highway speed, creating a risk of a crash. The recurring p1326 condition has been confirmed by the Hyundai dealership. The vehicle and engine have been inspected by Hyundai/lynnes Hyundai multiple times, including after the engine replacement. The current recurring condition has not been resolved. The check-engine light is the warning lamp associated with the current condition. I do not know the underlying cause of the recurring p1326 condition; Hyundai is currently attempting to diagnose it. The vehicle is currently available for inspection at lynnes Hyundai.

Auto had a very strong gas smell after arriving at work. Check the engine and underneath the car for leaks but no fluids on the ground or my garage. Smell persisted while out of town and made appointment for inspection. The dealer service man said it was suffering numerous leaks and we’re awaiting parts. Latest info was still leaks present and would advise after making certain no leaks persist.

What component or system failed or malfunctioned, and is it available for inspection upon request? the vehicle suffers from an intermittent, total engine stalling and propulsion failure. Without warning, the engine completely shuts down while driving and automatically drops the vehicle into "accessory (acc) mode". The vehicle is fully intact, operational when it restarts, and is available for immediate inspection upon request how was your safety or the safety of others put at risk? this issue has occurred five total times in live traffic, severely risking the safety of the vehicle's occupants and surrounding drivers. The most recent and dangerous incident occurred on the freeway in heavy, stop-and-go traffic. A sudden, complete loss of power on a high-speed freeway leaves the vehicle entirely vulnerable to rear-end collisions, as it leaves no room or momentum to safely coast to the shoulder. Has the problem been reproduced or confirmed by a dealer or independent service center? no. The vehicle has been brought to an authorized Hyundai dealership five separate times specifically to diagnose this exact stalling issue. Because the failure is intermittent, dealership service technicians have been unable to replicate the problem during their test drives or resolve the root cause. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? the vehicle has been inspected five separate times by authorized Hyundai dealership technicians during the service appointments mentioned above. No police, insurance, or independent manufacturer representatives have inspected the vehicle yet, as the stalling has not yet resulted in a physical crash. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear?there are absolutely no dashboard warning lights, check engine indicators, error messages, or mechanical symptoms prior to the failures. The engine shuts down instant.

Hyundai motor America & wallace Hyundai of stuartvehicle: 2020 Hyundai Santa Fe (2. 4l theta ii gdi engine)VIN: 5nms23ad5lh181669incident mileage: 181,000 mihyundai case number: 42981944section 1: catastrophic interstate safety incidenton July 16, 2026, while navigating heavy, high-speed traffic on interstate 95 (I-95) at approximately 80 to 85 mph, my vehicle suffered an un-commanded, catastrophic mechanical engine seizure. The vehicle instantly dropped from highway speeds down to a 21 mph "limp mode," creating an immediate multi-car pile-up hazard on a major interstate. Physical inspection immediately after the failure proved that the engine oil level was completely full. The internal components catastrophically failed due to a documented, systemic factory defect involving premature rod bearing failure and oil starvation mechanisms, entirely unrelated to consumer maintenance. Section 2: prior safety complaints & documented timelinehyundai motor America has intentionally forced me to operate a known, life-threatening safety hazard for 17 months, during which I drove an additional 31,000 miles under extreme duress. I filed formal oil consumption complaints with Hyundai corporate every three to four months. I was forced to manually replenish the engine oil every 1,000 miles due to excessive oil loss. Specific safety reports detailing hazardous engine behavior were formally logged with Hyundai on November 25, 2025, and again in April 2026. Rather than remediating the vehicle, Hyundai corporate claims adjusters and dealership supervisors ignored these warning tracks, effectively throwing a consumer out into active traffic in an unsafe, defective vehicle. Section 3: automatic shutdown trauma & accident riskthe manufacturing defects caused an intermittent, un-commanded automatic the manufacturing defects caused an intermittent, un-commanded automatic engine shutdown condition. On 5 to 10 separate occasions while stationary at active traffic lights, the vehicle stalled10times.

I purchased a 2024 Hyundai Santa Fe sel with 16,087 miles that has a the 8-speed wet dual-clutch transmission (dct) stutters to catch gear properly while accelerating from low speeds and back to high, example driving onto a highway ramp and matching speeds with ongoing traffic). Unfortunately, there have been multiple fears and risk of safety where accidents almost occured due to the transmission not catching the engines rotational speed to exact, causing slow to no acceleration. This is very dangerous and unsafe to not be considered under investigation. This unresolved issue will deteriorate the clutch and transmission itself over time. Help!.

I am currently burning through 2. 5 quarts of oil approximately every 800 miles.

I was merging onto the highway and the acceleration stopped working and the vehicle would not go more than 25 mph. Had to restart car in shoulder, isue seemed to self correct but then it happened 10 minutes later stranding me in between the highway and exit ramp. This was a huge safety issue and myself and others lives were at risk. I am bringing the vehicle in for inspection but this seems to be a recurring Hyundai issue. There were no warnings that came on. The auto mode on the dash went from green to an amber color. When I restarted the vehicle nothing changed. After the second time it occurred a check engine light came on.

Component/system: the powertrain launch control system — the transmission control unit (tcu) and 8-speed wet dual-clutch transmission paired with the 2. 5t engine — fails to deliver engine power in response to full accelerator input from a stop. The engine does not rev and the vehicle does not move for approximately 1–2 seconds despite the accelerator pedal being fully depressed, then power engages abruptly and violently. The vehicle is available for inspection upon request. Safety risk: the failure occurs when launching from a stop into intersections and cross-traffic. In the most recent incident, I was turning left across the roadway from a stop with an oncoming vehicle approaching. I applied full accelerator and the vehicle did not respond at all for approximately 2 seconds — no engine response, no movement — leaving me stationary in the oncoming vehicle’s path. Power then engaged violently and without warning, causing the vehicle to lurch across the road. I was nearly struck. Similar events have occurred multiple times throughout my ownership; this was the closest to a collision. Dealer confirmation: not yet inspected by a dealer. A dealer service appointment is being scheduled. Other inspections: the vehicle has not been inspected by the manufacturer, police, or insurance representatives. Warning lamps/prior symptoms: no warning lamps or messages have appeared before, during, or after any of the events. The failure is intermittent and occurs without warning. The condition has been present since I purchased the vehicle in October 2022 and has occurred regularly throughout ownership — numerous occurrences over more than three years. No warning lamps have ever accompanied it. Additional: condition persists with idle stop & go disabled, ruling out engine-restart delay. Same 8-speed wet dct was subject to recall 236 (NHTSA 22v-746) on 2021–2022 models for similar throttle non-response; 2023 excluded despite identical hardware.

Hyundai sante fe hybrid 2025 has a bad factory seal on the high voltage harness - hybrid battery connector that causes water to intrude the connector under normal conditions which can short the battery and pose a major safety issue. Hyundai is refusing warranty coverage of my shorted hybrid battery on my brand new 2025 Hyundai sante fe hybrid stating “flood” with no evidence of flood damage. My car experienced multiple p engine hybrid system faults on xxx and would not drive. I had it towed the van Hyundai carrollton on that date. They did not look at the car for over a week and it sat on their lot the entire time. On xxx they finally inspected it and claimed the car had been “flooded” and shorted the hybrid battery. The only evidence they provided was moisture in the high voltage harness. There were no water/silt lines, any other damage to any other components, and no evidence of any water anywhere else on the vehicle. The video they showed of the undercarriage only showed normal splash marks from driving. The car was never flooded/submerged. Any water/moisture found in the harness would have been due to a faulty/defective factory seal that should be impervious to water under normal operating conditions. No water/flooding/submersion damage would have been obvious of this. The dealership refused to provide any evidence and had no follow-up. One key aspect they refused to acknowledge was there was a massive rainstorm in [xxx] onxxx which was also the only rainstorm in the area in the previous 1-2 months. This happened while the car was on the dealer’s lot. The car had no issues with any water prior to being at van Hyundai. A case was opened with Hyundai corporate and the dealship also lied stating the car wasn’t in their system until xxx, which is false as I have phone records, tow records, and appointments showing the 7/10 date, so corporate overlooked that. I disagreed with the dealerships diagnosis as it was a scapegoat finding putting all blame o information redacted pursuant to the freedom of information act.

Complete unmitigated loss of acceleration and power while traveling at highway speeds, creating an immediate life-threatening road hazard. Following a warranty engine replacement and mandatory dealer software flash at clay cooley Hyundai (sherman, TX), the vehicle began experiencing powertrain communication issues. While operating the vehicle at 65 mph on the highway, the vehicle completely failed to accelerate and lost propulsion power, nearly resulting in a catastrophic rear-end collision with an oncoming 18-wheeler semi-truck. Dealership diagnostics claim "no trouble codes present," but live data telemetry confirms the high-pressure fuel pump (hpfp) is actively commanding and delivering a dangerous 1,600 psi to the fuel rail at hot idle. This abnormal fuel delivery is paired with a severe powertrain stutter in 3rd gear. Service personnel at multiple locations confirm a widespread, high volume of transmission failures and severe drivability issues specifically tied to this recent Hyundai software update. Corporate has denied repair coverage. The vehicle remains an active highway safety hazard and is completely undrivable.

Complaint summary: [xxx] / engine thermal fire risk / warranty deception my 2019 Hyundai Santa Fe (2. 4l gdi engine) is experiencing severe powertrain degradation under the known theta ii engine defect class-action framework. On November 7, 2025, the vehicle logged a permanent diagnostic trouble code (dtc) p1326 via an independent scan, indicating catastrophic internal rod bearing wear. On xxx, the vehicle was brought to Hyundai of milledgeville for safety recall verification. Instead of executing the mandatory corporate-directed bearing clearance test (bct) to replace the failing engine block, the service department committed technical campaign malpractice. The technician forced the 9c2 ecu software update directly over the locked mechanical fault to suppress the dashboard warning lights and alter the vehicle's rom id parameter limits. When caught via a photograph of their active gds diagnostic tablet showing 7 historical system faults, the service manager provided a truncated printed report hiding page 1 and omitting the critical p1326 powertrain code count to evade a warranty engine replacement. Due to these unmitigated delays, the vehicle has suffered severe consequential safety damage. The advanced engine degradation and oil consumption have flooded the exhaust system, melting the catalytic converter substrate and triggering a new dtc p042000 (catalyst efficiency) fault immediately after the dealer visit. The extreme engine vibrations have also damaged the transmission's torque converter clutch (dtc p074100). The dealership refused a service loaner and knowingly sent a disabled consumer and an elderly passenger away in an active, failing vehicle that presents a sudden stall-on-highway hazard and a severe thermal exhaust fire risk under extreme summer heat conditions. Hyundai motor America corporate has failed to provide emergency towing or alternative mobility accommodations despite a registered corporate case file. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(.

The contact owns a 2022 Hyundai Santa Fe. The contact stated that while pulling out of the driveway and approaching a stop sign, the message "check transmission oil immediately" was momentarily displayed. The dealer was contacted and informed the contact that the vehicle could not be diagnosed unless the message was displayed. The contact stated that the failure recurred while driving approximately 35 mph the following day, and the engine power was reduced. The check engine warning light was illuminated. The driver contacted bluelink and was advised to pull over safely. Bluelink and the dealer advised the driver to tow the vehicle to the dealer for assistance. The vehicle was towed to the dealer, where it was diagnosed with transmission failure. The contact was informed that the transmission needed to be replaced. The vehicle was not repaired. The contact associated the failure with NHTSA campaign number: 22v746000 (power train); however, the VIN was not included. The manufacturer was notified of the failure and offered to cover half the cost of the repair. The failure mileage was approximately 74,900.

The contact owns a 2026 Hyundai Santa Fe. The contact stated that while driving at an undisclosed speed, the vehicle hesitated while accelerating. The failure occurred mostly while making a left turn and while accelerating from a stop and continued for 10-seconds before self-correcting. There was no warning light illuminated. The contact stated that there was almost a crash during the failure. The failure was not self-corrected after one failure. The vehicle was turned off and restarted, and the failure was then self-corrected. The vehicle was taken to the local dealer, who was unable to determine the cause of the failures, and there was no dtc found. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was 5,100.

We are driving on the highway and the engine just stop working but all lights are still working. I am trying to put gas but it seemed that the engine completely shuts off dangerously without warning. This put my family at risk because there were a lot of big trucks beside us. Theta ii 2. 0l turbo engine just stalled I believe this has been around . Can you please help us.

The vehicle is in limp mode and is displaying a flashing check engine light with a p1326 powertrain code. The vehicle in question is a 2017 Hyundai Santa Fe sport equipped with a theta ii 2. 4l gdi engine at 118,000 miles. Per the service campaign t3g, listed on the NHTSA website, this vehicle is covered under warranty repair since it is a theta ii engine vehicle that is displaying an active p1326 power train code. The vehicle is under he 10 year/120,000 miles limitations of the extended warranty. The dealer just submitted to us a quote to repair the vehicle and is stating that none of the repairs listed are covered under warranty. This includes a quote to replace the engine knock sensor, which is a warranty item under the t3g service campaign’s extended warranty.

Vehicle stalled while driving — unsafe loss of power. While driving at normal speed, the vehicle suddenly shut off without warning and the electrical system malfunctioned. I had to pull over and restart car. This created a dangerous situation and could have caused a collision. Prior to this incidenct, the vehicle had intermittent electrical issues during startup (flickering electronics). This is the first time the car has experienced during driving, and is now at the Hyundai dealership. The car has been reported as unsafe to drive. This appears similar to other Hyundai stalling/power loss issues and may indicate a developing safety defect. Requesting investigation.

A Hyundai recall 9c2 update was applied to my vehicle. Ever since that update my vehicle hard shifts on cold starts which I fear is damaging the transmission. Hyundai dealer was able to replicate this and keeps advising us that concern is ‘under review with Hyundai’. I have the service order that states this. This problem has been ongoing for months! I think Hyundai needs to find a resolution to this as my research indicates it is impacting a lot of customers.

My check engine light came on, and my car was also feeling "sluggish" and slow to accelerate. I scheduled a service appointment at my local dealer 4 days later. At the appointment, the technician stated everything checked out okay and the check engine light was likely an "anomaly" or "outlier" but otherwise nothing to be concerned about since everything checked out "okay" and no problems were identified during their test drive. However, that very afternoon, I was driving down the interstate, where the posted speed limit is 70mph, when my check engine light came on again and suddenly lost power, drastically reducing my speed and could not accelerate faster than 39mph. Luckily, the interstate was not busy at the time (about 10:30-11:00 a. M. Saturday morning) and there were only less than 4 cars behind me that were able to easily switch lanes and pass me. I moved over to the shoulder to a complete stop and restarted my car. My check engine light remained illuminated and was still slow to accelerate and "sluggish" but was able to (slowly) reach interstate speed (60-70mph) until I reached an acceptable exit and safely made it to my destination. I have since used roadside assistance to tow the vehicle from my home to the the same dealership for inspection and service (again).

See all problems of the 2021 Hyundai Santa Fe 🔎.

On June 20 2026 at 2:07pm central time there was a check engine light displayed on the dash of my vehicle 2022 Hyundai Santa Fe calligraphy, while it was parked in the garage of my home and was just powered up. I had then performed the vehicle diagnostics test (pictures attached) that showed that there was an issue with the 'transmission control system' with detail that a full system check is recommended and to schedule an appointment with a dealer. I had later proceeded to contact local dealer 'huffines Hyundai mckinney' for service as I was due for an oil change anyway. As I was driving the vehicle from my home which was about 13 miles away from the dealership, I noticed that the vehicle had great trouble shifting from 1st gear to higher gears, that the speed would be 20mph or lower no matter how much the accelerator was pushed and I had to drive very carefully in traffic due to the low speeds. I was told at the dealership by 3pm that day that there were no active recalls on my vehicle, that the transmission related recall that was showing up on google search for that dct code wasn't specific enough to my vehicle and to book an appointment for vehicle diagnostics and transmission repair/replacement at full cost to myself. The multi-point inspection report after oil change showed nothing about the check engine light issue or that the issue was even diagnosed by the dealership. From that day until today Aug 29 2026, I've noticed that the vehicle still has trouble shifting from the 1st gear, that the vehicle drives normally when increased time is allowed between power up and start of drive (~2min of engine running idle) and that the check engine light reappears after a trip of quick power up and drive. There was atleast one instance where I had to pullover onto the shoulder to avoid high speed traffic while driving in the right lane.