2019 Hyundai Santa Fe Problems

On 03/26/2026, my 2019 Hyundai Santa Fe received Hyundai Service Campaign 9C2 (TSB 26-01-013H-1), which included an Engine Control Module (ECM) software update for Theta II emissions improvement. The vehicle did not have the following drivability problem before this software update. Immediately after the 9C2 update, the vehicle began jerking/bucking slightly at low speeds, most noticeably around 10-20 mph when coasting with no accelerator input or when applying very light throttle. Acceleration response also feels slower than before the update, with noticeable hesitation when the accelerator is pressed. The problem is most noticeable during the beginning of a drive when the vehicle is cold. After driving for some time and the vehicle warms up, the symptoms improve, although the change in drivability remains noticeable compared with operation before the update. There have been no warning lights or warning messages associated with the problem. The issue began immediately following the ECM software update. The vehicle has not yet been returned to the dealer for diagnosis or confirmation and is available for inspection. I am concerned about the safety implications of delayed or unpredictable acceleration response, particularly when entering traffic, crossing an intersection, or merging when timely acceleration may be necessary. I am reporting this because the condition began only after Hyundai Service Campaign 9C2 was performed and I believe NHTSA should evaluate whether this ECM software update is causing similar drivability and acceleration problems in affected vehicles.

The vehicle experienced a sudden, intermittent engine stall while driving, specifically when slowing down or coasting to a stop in live traffic. When the engine dies, the vehicle immediately loses engine power, power steering, and power braking assist, creating an extreme safety hazard. After stalling, the vehicle refuses to restart for several minutes. An authorized Hyundai dealership previously replaced the high-pressure fuel pump under warranty to address this issue, but the dangerous stalling has persisted over the last 2,000 miles. The vehicle continues to randomly shut off without throwing a permanent check engine light or diagnostic trouble code, and the manufacturer has failed to correct this critical safety defect.

On 03/26/2026, my 2019 Hyundai Santa Fe received Hyundai Service Campaign 9C2 (TSB 26-01-013H-1), which included an Engine Control Module (ECM) software update for Theta II emissions improvement. The vehicle did not have the following drivability problem before this software update. Immediately after the 9C2 update, the vehicle began jerking/bucking slightly at low speeds, most noticeably around 10-20 mph when coasting with no accelerator input or when applying very light throttle. Acceleration response also feels slower than before the update, with noticeable hesitation when the accelerator is pressed. The problem is most noticeable during the beginning of a drive when the vehicle is cold. After driving for some time and the vehicle warms up, the symptoms improve, although the change in drivability remains noticeable compared with operation before the update. There have been no warning lights or warning messages associated with the problem. The issue began immediately following the ECM software update. The vehicle has not yet been returned to the dealer for diagnosis or confirmation and is available for inspection. I am concerned about the safety implications of delayed or unpredictable acceleration response, particularly when entering traffic, crossing an intersection, or merging when timely acceleration may be necessary. I am reporting this because the condition began only after Hyundai Service Campaign 9C2 was performed and I believe NHTSA should evaluate whether this ECM software update is causing similar drivability and acceleration problems in affected vehicles.

Update Re: 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)

I purchased my 2019 Hyundai Santa Fe on October 29, 2021. Since then, I’ve experienced a series of mechanical and electrical failures that I believe are far beyond normal for a vehicle of this age. - The remote start has never worked. - On October 20, 2023, the hatch latch failed. The only way to open it now is by climbing into the back and manually pulling the latch. - On October 27, 2023, the electric power steering failed. I had to replace the entire steering column at a cost of $4,000. - The paint began deteriorating prematurely and required a full repair. Hyundai covered this under warranty, but the cost was $8,000. - In early spring 2025, all coil packs had to be replaced due to misfires, costing approximately $500. - September 4, 2025, The car stalled while I was driving on a main road and I had to pull over. There were no warning lights and I started home. About a mile from home check engine light came on so contact mechanic. Ended up towing to a dealership and was told the engine must be replaced because the oil had burned off without any warning from the oil light indicator. The turbo also needs replacement. - The combined cost is $14,000. These failures have caused significant financial hardship and stress. I am currently $17,000 underwater on the loan, and the repair costs are overwhelming. The lack of warning before catastrophic engine damage is especially concerning. I believe these issues reflect systemic defects in the vehicle’s design and manufacturing. The repeated failure of critical components—especially the steering system and oil monitoring—make this the worst automotive experience I’ve ever had. I respectfully request that the NHTSA investigate these failures and determine whether Hyundai should be held accountable. Consumers deserve protection from vehicles with such extensive and costly problems.

This car has been cutting off for a month and no type of codes popping up alternator has been replaced two brand new batteries has been replaced which is dangers car cutting off while I am driving this vehicle is not safe at all needs to be recalled asap mechanic can’t even find the problem .

Overly excessive oil consumption 2 Quarts every 3 or 4 days.no leaks. Engine gets so hot I don't have to turn on heater In winter. On going issue since 100,000 miles. EBS light stays on electronic parking brake switch does not work. Parking brake will randomly engage after vehicle is turned off. Dealership cannot duplicate issue. If cruse control is turned on the vehicles warning lights all of them will suddenly illuminate and the vehicle shuts off. alternator and battery replaced. Have not used cruse control since. Airbags never inflated in a front end crash at 45mph Most recently I started experiencing I intermittent trouble staring the car. Then one day it didn't start at all and smoke was coming from under the hood. Towed to mechanic , starter burnt up 155,000. $ 900 to replace then a couple days later I lost power on the freeway and the car started jerking and vibrating. Stopped Vehicle cut off and would not start. After 1hr I started and limped home. Vibration under 2000 RPMs and when stopped. Knocking noise under hood. Brand new spark plugs. Mechanic stated Cylinder 3;missfire was identified as a hole in a valve due to weak material now I have to replace engine. Oil consumption and excessive friction and heat is to blame. My car has been cared for like a baby it's all I have. I should not have to be responsible for this very cheaply made engine that was doomed to fail.

Was at a complete stop at a light with a car in front me, I had plenty of space when I started accelerating and then suddenly the automatic system braked hard. Like there was literally NO REASON for what the car did. It took a few seconds to get out of that issue but then was able to proceed as normal. There have been at least 2 other times where a side sensor was triggered while on the freeway violently jerking me to the left, nearly putting into another lane.

The door was completely shut - I was driving on the highway - no alarm on the instrument panel, fully stage 2 latched ( even if it is just stage 1 latched - the instrument panel gives an alarm - there was no alarms about door not fully closed) everything was normal. 15 minutes into the drive - I was exiting the highway, making a right hand turn - the door suddenly popped open, alarm went off on the instrument panel - thankfully did not swing open, I was able to hold onto the door. I shut the door again - drove for 200 Miles - no issue again. This was the first ever time I saw this issue at 90K miles

The trunk hatch is no longer functioning. The car beeps, but does not unlatch. Once the gate is manually open from a latch inside the trunk, it will not close by pushing the gate close button. It just stopped working. I went into the grocery store, and when I returned with groceries, it stopped working. Hyundai says it's out of warranty and will cost $1800 to repair.

The vehicle experienced a sudden, intermittent engine stall while driving, specifically when slowing down or coasting to a stop in live traffic. When the engine dies, the vehicle immediately loses engine power, power steering, and power braking assist, creating an extreme safety hazard. After stalling, the vehicle refuses to restart for several minutes. An authorized Hyundai dealership previously replaced the high-pressure fuel pump under warranty to address this issue, but the dangerous stalling has persisted over the last 2,000 miles. The vehicle continues to randomly shut off without throwing a permanent check engine light or diagnostic trouble code, and the manufacturer has failed to correct this critical safety defect.

My vehicle had a very strong gas smell inside and outside of the car. I found a gas puddle under the car coming from the back of the vehicle. Car was hesitating when I stepped on the gas. I was afraid it may stall. I drove the vehicle to my regular service station. Vehicle has an active fuel leak and this is a fire hazard. I was very concerned whether the vehicle would stall and cause an accident. Warranty coverage was denied.

internal mechanical failure of the piston rings and cylinder walls. Misfire on Cylinder #2. Further testing revealed that Cylinder #2 is at 80 PSI, which is significantly below the manufacturer's specification. A subsequent leak-down test showed a 90% loss of pressure with air escaping through the oil filler hole. The issue stated above can cause severe mechanical failure of piston rings and cylinder walls can absolutely lead to connecting rod bearing problems by creating excessive debris, poor lubrication, abnormal piston motion, and increased stress, causing premature wear, overheating, and eventual bearing failure, often resulting in catastrophic engine knocking and damage.  Diagnostics completed by Hyundai dealer and stated an engine replacement. Vehicle became difficult to steer and then warning lamp came on. Vehicle was difficult to turn left and right and almost caused a collision.

I purchased my 2019 Hyundai Santa Fe on October 29, 2021. Since then, I’ve experienced a series of mechanical and electrical failures that I believe are far beyond normal for a vehicle of this age. - The remote start has never worked. - On October 20, 2023, the hatch latch failed. The only way to open it now is by climbing into the back and manually pulling the latch. - On October 27, 2023, the electric power steering failed. I had to replace the entire steering column at a cost of $4,000. - The paint began deteriorating prematurely and required a full repair. Hyundai covered this under warranty, but the cost was $8,000. - In early spring 2025, all coil packs had to be replaced due to misfires, costing approximately $500. - September 4, 2025, The car stalled while I was driving on a main road and I had to pull over. There were no warning lights and I started home. About a mile from home check engine light came on so contact mechanic. Ended up towing to a dealership and was told the engine must be replaced because the oil had burned off without any warning from the oil light indicator. The turbo also needs replacement. - The combined cost is $14,000. These failures have caused significant financial hardship and stress. I am currently $17,000 underwater on the loan, and the repair costs are overwhelming. The lack of warning before catastrophic engine damage is especially concerning. I believe these issues reflect systemic defects in the vehicle’s design and manufacturing. The repeated failure of critical components—especially the steering system and oil monitoring—make this the worst automotive experience I’ve ever had. I respectfully request that the NHTSA investigate these failures and determine whether Hyundai should be held accountable. Consumers deserve protection from vehicles with such extensive and costly problems.

Overly excessive oil consumption 2 Quarts every 3 or 4 days.no leaks. Engine gets so hot I don't have to turn on heater In winter. On going issue since 100,000 miles. EBS light stays on electronic parking brake switch does not work. Parking brake will randomly engage after vehicle is turned off. Dealership cannot duplicate issue. If cruse control is turned on the vehicles warning lights all of them will suddenly illuminate and the vehicle shuts off. alternator and battery replaced. Have not used cruse control since. Airbags never inflated in a front end crash at 45mph Most recently I started experiencing I intermittent trouble staring the car. Then one day it didn't start at all and smoke was coming from under the hood. Towed to mechanic , starter burnt up 155,000. $ 900 to replace then a couple days later I lost power on the freeway and the car started jerking and vibrating. Stopped Vehicle cut off and would not start. After 1hr I started and limped home. Vibration under 2000 RPMs and when stopped. Knocking noise under hood. Brand new spark plugs. Mechanic stated Cylinder 3;missfire was identified as a hole in a valve due to weak material now I have to replace engine. Oil consumption and excessive friction and heat is to blame. My car has been cared for like a baby it's all I have. I should not have to be responsible for this very cheaply made engine that was doomed to fail.

Was at a complete stop at a light with a car in front me, I had plenty of space when I started accelerating and then suddenly the automatic system braked hard. Like there was literally NO REASON for what the car did. It took a few seconds to get out of that issue but then was able to proceed as normal. There have been at least 2 other times where a side sensor was triggered while on the freeway violently jerking me to the left, nearly putting into another lane.

The Airbag light keeps coming on and saying it’s not activated, the wiring also keeps blowing out brand new headlights due to faulty wiring.

At 1641, I was driving 55mph on tonganoxie rd with the right of way & no stop signed. The other driver did have a stop sign but did not yield and entered the intersection causing my vehicle to strike the middle of the passenger side and spinning my vehicle and stopped 90’ to my right facing the direction she was traveling. All of my air back opened and inflated properly, except the driver side airbag. Because of this, my head slammed into the glass window, which then threw up upper body towards the passenger side. Had I not had a seatbelt on I would have ended up there. Due to the kinetic impact to the window (airbag only inflated about 1/4 of the way) I suffered a TBI severe concussion, tore my upper ribs from the breast bone, whiplash to my neck and back. There was a recall for this EXACT vehicle and driver airbag issue but mine was not listed as being on it. It has been a month and I still have a lump and tenderness at the impact site, brain fog and severe headaches, neck and back pain causing my to out of work at leave without pay. The headaches are worsening a bad do not want anyone else hurt.

Wipers are in the office position, but suddenly go up and down 2 inches, while off, and won't turn on. It snowed the day before, but wasn't while I was driving. Also, my hood is peeling. I have white paint.

Panoramic sun roof glass exploded and shattered as I was driving down the highway on a 50 degree F cloudy day. There was no known object that struck the roof nor did we hit a bump in the road or anything. The sound was like that of a shotgun blast. I've seen other posts and settlements for earlier Hyundai vehicle makes and models where warranty was extended to cover a defect causing this. But my 2019 Hyundai Santa Fe damage is not being covered under warranty since it is a couple thousand miles over the 60,000 mile warranty. Hyundai service reported there was no object or damage found to indicate it was caused by something impacting the vehicle. My concern is what will prevent the replacement glass from breaking again if the defect causing it to happen is not fixed.

A year after I purchased vehicle the paint started peeling off the wheel. When I took it to the dealership they kept telling me they were still addressing problem and would get back to me. Contacted them several times and they still didn’t have the problem solved. Then the dealership changed ownerships. New dealership says not their problem. And it was too late at this point. I also have the paint on my hood of my car peeling. Both of these problems are gonna be very expensive to repair! I see this is a known problem. Hyundai needs to be accountable. I live in Auburn Al

The seat is able to forward face up to 40 lbs with a seatbelt install and 35 lbs with a latch install. When trying to install this seat with the seatbelt the instruction manual states not to lock the seatbelt after install however if the seatbelt inst not locked the seatbelt moves easily with some pressure (i.e. child pushing legs against back seat) and then becomes so lose that is can fall over. ALternately, i have tried the install with locking the seatbelt and this solution only lasts 1-2 car rides longer. (i.e. i would need to reinstall my seat every other time my child rode in the car). Currently the seat is installed with the latch system as this is the only way to get a safe install however my son is currently 34lbs and it will soon be unsafe to ride rear facing with the latch system which will then force me to turn him front facing before I or my son are ready.

The contact owns a 2019 Hyundai Santa Fe. The contact stated while the vehicle was either stationary, parked, or being driven, the seat belt buckle failed to operate as designed. The seat belt warning light was illuminated. The contact stated that during the colder months, the seat belt buckle was more difficult to latch securely. The local dealer was contacted; however, the vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 85,000.

Seatbelt wont snap or lock. This is a safety issue

The contact owns a 2019 Hyundai Santa Fe. The contact stated that while driving at approximately 22 MPH, the vehicle struck a pot-hole which caused the driver seat to move out of place. The contact stated that while accelerating, the front driver seat would shift backward and while shifted into reverse the seat would move forward.  The vehicle was taken to a local dealer where it was diagnosed that the seat rail was damaged and the seat rail and seat needed to be replaced. The manufacturer was made aware of the failure. The failure mileage was approximately 92,000.

Continuous issue of front driver passenger power seat front level button failure. Continuous Headlights, fog lights getting fused every 4 months. Indoor back roof light works and sometime just does not work for months.

Continuous issue of front driver passenger power seat front level button failure. Continuous Headlights, fog lights getting fused every 4 months. Indoor back roof light works and sometime just does not work for months.

THE HEADLIGHTS ON DIM WILL GIVE THE ONCOMING CAR THE " BRIGHTS EFFECT" ON ROUGH UP AND DOWN ROADS. RESULTING IN THE ONCOMING CAR GIVING ME THE "BRIGHTS FLASH" OR JUST LEAVING THEIR VEHICLE 'BRIGHTS' ON PERMANENTLY. THIS IS VERY BLINDING AND DANGEROUS. SEEMS THERE IS A FINE LINE OF BEING DIM OR BRIGHT ON THESE TYPES OF HEADLIGHTS. I HAVE HAD THEM INSPECTED BY THE DEALER AND TOLD THEY ARE OK. THERE ARE MANY OTHER COMPLAINTS ON THE INTERNET. THIS IS NIGHT TIME DRIVING.

Engine is burning a tremendous amount of motor oil. Dealer does acknowledge engine is burning oil. No warning lights on. Told burning motor oil is normal for a hyundai engine. Engine can seize during driving with no warning and is a safety issue. Front struts are also failing. No warning and is a safety issue: Currently trying to get dealer to cover defective components under warranty. Nothing has been repaired or resolved as of yet.

The contact's son owns a 2019 Hyundai Santa Fe equipped with KUMHO Tires, Tire Line: Solus, Tire Size: 235/65/R17, DOT Number: H25AYA8U1221. The contact stated that while his son was driving 35 MPH, the passenger’s side front tire had a blowout causing damage to the front end of the vehicle. The vehicle was towed to a body shop and the front end was repaired. The manufacturer was made aware of the failure but provided no assistance. The failure mileage was unavailable.