2020 Hyundai Santa Fe Problems

Codes P0172 and P016B. Oil has fuel in it due to high pressure fuel pump leaking. Possible premature engine failure or fire. This is a 2020 santa fe limited 2.0T.

At times the engine will freeze up, stall the car while driving, or the car will altogether turn off when at a stop sign or light, while the car is still on. I've had the oil changed before the mileage indicated expired because the engine light came on and I was told the car had no oil at all when I know the oil was just changed within a 3 months time frame.

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

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.

The multifunction/turn signal switch in my Hyundai has failed and causes the left turn signal to operate intermittently. While driving, I am unable to reliably activate the left turn signal when making a left turn or changing lanes. The signal may fail to engage when the turn signal lever is operated, requiring repeated attempts to activate it. College Station Hyundai inspected the vehicle and diagnosed the multifunction switch as the failed component requiring replacement. The replacement component has been identified as Hyundai part number 93400-S1750. I consider this a significant safety concern because the failure prevents me from reliably signaling my intention to turn or change lanes to other motorists. The malfunction occurs during normal operation of the vehicle and creates the risk that surrounding drivers will not know that I intend to turn or change lanes. The vehicle currently has approximately 86,611 miles. I reported the issue to Hyundai Motor America and requested assistance because this is a safety-critical component. Hyundai declined my request because the vehicle is outside the warranty period. I am submitting this complaint because I believe the premature failure of a component necessary for the reliable operation of the vehicle's turn signals may constitute a safety-related defect, and I am requesting that NHTSA document and evaluate this failure.

I went to the store, came home , parked and turned off the car. Went to go outside about 10 minutes ,maybe. Black smoke coming from right front. By the time i grabbed the keys and fire extinguisher there were flames coming from the engine compartment

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

Vehicle began running sluggish, gas smell noticed. Vehicle was due for oil change, took car in for oil change to AAA and mentioned gas smell. AAA identified gas leaking from fuel pump posing immediate safety issue that needed to be resolved.

The contact owns a 2020 Hyundai Santa Fe. The contact received notification of NHTSA Campaign Number: 21V00M000 (Visibility); however, the part to do the recall repair was not yet available. The local dealer was contacted and confirmed that the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure.

2020 Hyundai Santa Fe Limited. The panoramic sunroof glass suddenly shattered/exploded without a collision and without any known impact. Glass shattered completely and created a safety hazard to occupants and traffic. Vehicle was purchased as Hyundai Certified Pre-Owned in 2021. Hyundai corporate case has been opened and advised dealer inspection. Dealer inspection is pending. Photos are available. Request that this be logged as a potential safety issue involving panoramic sunroof glass failure.

Vehicle began running sluggish, gas smell noticed. Vehicle was due for oil change, took car in for oil change to AAA and mentioned gas smell. AAA identified gas leaking from fuel pump posing immediate safety issue that needed to be resolved.

I took my vehicle in to the dealership on April 24, 2026 for a software update after receiving notice in the mail. The update changed my auto stop/start so that it is on whenever the vehicle is started. When removing my foot from the brake the car surges forward without me touching the gas peddle. I took my Hyandai back in to the dealership on May 4, 2026, and was told that the auto stop/start was supposed to now be staying on as that was in the software update. They said they could not duplicate the surging of the vehicle. It has surged strong enough to move forward, while stopped at an intersection, that it put me out two to three feet. I felt it necessary to put it in reverse and back up it was out so far. This will absolutely put others at risk as I drive and work in a downtown area with lots of crosswalks with lots of people crossing, and should vehicles be stopped in front of me, it could hit them. I can turn it off, but in the beginning it seemed to be turning itself back on. Additionally, I am not used to always turning it off because I never had to before and I don't always remember. This week, something new: When pulling off after starting the car, even if I remember to turn off the start/stop, the car is jerking forward when I depress the gas. It's like it is getting surges of gas, or like the peddle is being pushed to the floor, let off, pushed to the floor, let off, etc. I am so incredibly scared now to just drive the vehicle I've loved for over five years now. My vehicle has not been inspected by the manufacturer, police, insurance or any others. I did not know this was an option. I would love to get more information about how to go about this. There are no warnings of any kind when this occurs, which is every single time I get in it. Please, someone, tell me what I can do further. Continue taking it back to the dealership? Ride with them next time? I just am at a loss and incredibly scared. I am a woman in my 60s.

The contact owns a 2020 Hyundai Santa Fe. The contact stated while driving approximately 15 MPH, while parking and while idling on different occasions, the brake pedal was depressed, but the vehicle hesitated to respond. There was no warning light illuminated. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not contacted. The failure mileage was approximately 79,000.

I was at a standstill waiting for oncoming traffic to pass with my foot on the brake and all of a sudden the car accelerated and the forward collision warning fail to come on and I hit a trailer because of it

OVER THE LAST 4 WEEKS (NOTICED APRIL 15 AROUND 6PM GOING TO CHURCH) THE PASSENGER FRONT DOOR OPENS AUTOMATIOCALLY WITHOUT ANYONE OPENING IT. THE DOOR IS LITTERALLY LOCKED AND SFERT DRIVEING THE DOOR JUST OPENS. FROM 4/15/26 UNITL 5/7/2026 THIS HAS HAPPENDED 5 TIMES.

2020 Hyundai Santa Fe quartz white pearl paint and the paint is blowing off as I drive in multiple places. I took it to the dealer because when I called they said there's a Z05 recall on white Hyundai paint and it would be covered. When I take it in, they say 2020's weren't covered because the paint issue was corrected in 2020, when clearly it wasn't. In any case Hyundai agreed to pay 65% of the cost, nothing more. THEY NEED to include all years that present this issue. Unfortunately I've now picked my car up and the paint in the areas that were painted are a different color white. I'm not happy with this remedy and I'm not happy that Hyundai refuses to take ownership with ALL vehicles painted in white. This recall should be revised to include all vehicles from 2016 forward instead of skipping one year which just happens to be 2020. Any help is greatly appreciated. The paint is already starting to show signs of coming off in other areas but those won't be considered until it's obvious paint peeling larger than a certain size.

I was quoted $3,000 to replace defective mat sensor in seat so that the airbag light will go off and my vehicle can be inspected. My family can’t afford this fix and I’m stressed out and do not know what to do. My vehicle was not in an accident nor was anything done that would cause damage and result in this fault. I am aware that the 2019 Santa Fe has an extended warranty for this exact defective mat sensor. My 2020 has the identical setup and failed just past the standard mileage limit. Because this is a critical SRS safety system that prevents my airbags from working properly I request help form the NHTSA. I read online a lot of owners are in my same situation.

We were driving on interstate 49 going south near Chester Arkansas when traffic came to a stop. I was rear ended by a vehicle driving 75 mph. My car hit the car in front of me where there was damage to both the passenger and driver side front area of the car. No airbags deployed in spite of the severity of the front and rear impact of the vehicle. I sustained three compression fractures to my back with several abrasions and bruises. Both my vehicle and the vehicle in front of me were declared total losses.

I am reporting severe safety risks and inspection fraud on my AWD 2020 Hyundai Santa Fe (VIN: [XXX]) caused by Universal Hyundai in Orlando. Inspection Fraud: The dealer falsified safety metrics, marking my brakes as a failing 4mm to push a $659.90 repair (RO# XXX), then passed those exact brakes at 5mm eleven days later (RO# XXX). Tire Malpractice: Mechanics over-inflated my tires to a dangerous 39 PSI and botched the alignment. This caused structural tire belt separation and severe sidewall bulges. The rear tire has suffered rapid, catastrophic deflation, dropping flat to 14.5 PSI and down to an empty 5.5 PSI. Crash & Drivetrain Risk: Operating an All-Wheel Drive (AWD) vehicle with a rapidly collapsing tire and asymmetric alignment forces the wheels to spin at mismatched speeds, creating severe friction that is destroying the internal powertrain transfer case and causing an immediate highway blowout crash risk. The service manager admitted "human error" and issued a full refund but banned my vehicle to avoid an audit. Hyundai Corporate has been notified under Case #XXX but has delayed resolution. Active consumer fraud file logged with the State of Florida under Case XXX. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The harness adjustment button on my Nuna RAVA car seat has failed, preventing the harness from being properly tightened. This makes it impossible to securely restrain my child. This issue involves the same harness adjustment mechanism that Nuna previously addressed in a voluntary recall, where debris could cause the adjuster to malfunction and result in a loose harness. The seat has not been misused and is within its expected usable lifespan. Despite this, Nuna has refused to repair or replace the seat, stating it is out of warranty. This is a safety-critical failure that directly impacts child passenger safety, as the harness cannot be properly secured in the event of a crash.

Vehicle experiences severe, intermittent, un-commanded steering inputs from the Lane Keeping Assist (LKA) system at highway speeds (55-70 MPH). The steering wheel violently jerks toward adjacent traffic lanes/shoulders without operator input, lane drift, or warning, requiring immediate high-force manual intervention to overpower mechanical torque and prevent a collision or roadway departure. Chronology of manufacturer notice: - Oct 2024: Initial consumer dispute logs flagged steering safety concerns and unresolved campaign items. - Dec 2024: Opened Corporate Case 24164934, formally alerting consumer affairs to dangerous steering wheel jerking. - Jan 2025: Presented to an authorized dealer; an OTA software update was deployed, but intermittent tracking failures persisted, including failure to recognize lanes at night. - June 2026: Under Case 42680760, the system failed acutely on the interstate, jerking the vehicle out of painted lanes. The malfunction originates in the LKA steering control module and camera hardware, which are intact and available for inspection. Dealerships have not replicated the defect during brief diagnostic windows due to its intermittent nature. The manufacturer has deflected these notifications and refused a forensic diagnostic sweep or mechanical remediation. Instead, case managers attempted to close the file by offering partial financial goodwill for an unrelated cosmetic paint delamination defect on the same vehicle. No warning lamps or error messages precede these events; the system executes aggressive mechanical intervention with zero notice. This system error bypasses driver override thresholds, conflicting with vehicle crash avoidance frameworks. Because the computer fails to log diagnostic trouble codes (DTCs) during these steering drops, the manufacturer exploits this data vacuum to deny structural remediation, creating severe multi-vehicle side-impact and rollover risks.

While driving, the engine catastrophically failed without warning, causing an immediate loss of power-assisted braking and steering. The failure occurred while traveling downhill. I was unable to slow or control the vehicle properly and was forced to proceed through a school bus’s flashing lights to avoid a potentially catastrophic collision, resulting in a traffic citation. My son was in the vehicle at the time. A sudden loss of engine power, braking assist, and steering assist while driving presents a serious safety defect. Vehicle was towed to Fred Beans Hyundai in Doylestown where it has been confirmed engine failure. This failure happened immediately and without warning.

235/60R18 Tire leak & brittle texture

Failed tire in question: Tire failed immediately when apparent road hazard occurred on a major freeway. Exited freeway and located a area where I was able to pull over. After changing said tire (Kumho 235.60/R18) I attempted to inspect tire and found the steel belt failed (punctured). Upon further investigation I observed that the steel belt has covered with less than as less than a 1/6th inch of rubber thereby exposing the belt for a potential failure. At this point the mileage said tire was 7700. As of yet the tire warranty has not been confirmed. This tire was delivered on a new 2020Hyundai Santa Fe limited.

The multifunction/turn signal switch in my Hyundai has failed and causes the left turn signal to operate intermittently. While driving, I am unable to reliably activate the left turn signal when making a left turn or changing lanes. The signal may fail to engage when the turn signal lever is operated, requiring repeated attempts to activate it. College Station Hyundai inspected the vehicle and diagnosed the multifunction switch as the failed component requiring replacement. The replacement component has been identified as Hyundai part number 93400-S1750. I consider this a significant safety concern because the failure prevents me from reliably signaling my intention to turn or change lanes to other motorists. The malfunction occurs during normal operation of the vehicle and creates the risk that surrounding drivers will not know that I intend to turn or change lanes. The vehicle currently has approximately 86,611 miles. I reported the issue to Hyundai Motor America and requested assistance because this is a safety-critical component. Hyundai declined my request because the vehicle is outside the warranty period. I am submitting this complaint because I believe the premature failure of a component necessary for the reliable operation of the vehicle's turn signals may constitute a safety-related defect, and I am requesting that NHTSA document and evaluate this failure.

There is a problem with the car's headlights. They are having to be replaced every couple months. I have taken it to the dealership and they told me it would be several hundreds of dollars to diagnose, but cannot tell me anything upon inspection other than needs replacement. We are having to purchase new bulbs every 2-3 months. One side goes out, then the other. We are being careful when replacing them, not to handle them with our fingers and using the bulb lubricant as advised per the parts store. I have receipts for multiple headlamp purchases.

To Whom It May Concern, I am writing to formally report repeated safety system failures in my Hyundai vehicle that have resulted in significant injury and ongoing hardship. The first incident occurred in 2021, when my vehicle was struck from the front by another driver who fled the scene. Despite the impact causing visible front-end damage, the airbags did not deploy, and the seatbelt did not engage properly. The vehicle was repaired by an authorized Hyundai dealership, yet at no point was I informed that the vehicle’s safety systems might be compromised or that it should not be driven. The second and more severe incident occurred in December 2024, when my vehicle was rear-ended by a commercial truck and subsequently pushed into four other vehicles. Once again, neither the airbags deployed nor the seatbelt engaged, resulting in multiple bodily injuries for which I am still undergoing treatment. After reporting this second failure to Hyundai, I was informed that the airbags and seatbelts may not activate when the vehicle is struck from behind. However, this explanation does not address the fact that the same safety failures occurred in the 2021 front-end collision as well. I believe these repeated malfunctions indicate a serious defect in the vehicle’s safety restraint and airbag systems that poses an ongoing danger to drivers and passengers. I am requesting a full investigation into these safety system failures, including whether the dealership’s repair process or Hyundai’s design or manufacturing contributed to these malfunctions. Due to these failures, I have experienced significant physical injury, emotional trauma, and ongoing medical issues, and I am seeking appropriate accountability and resolution.

Nothing just have a question for me and my friends that all own newer Hyundai SUV’s that seem to be having similar seatbelt issues

La guagua a tenido problemas con el tren delantero. Comenzó con un sonido en el Guía. La Hyundai le reparo esa pieza y luego continuó con el mismo ruido. Ahora tienen que cambiarle el Rack and Piñogn. Mi guagua tiene solo 19,750 millas creo que vino mala de fábrica.

Driver’s door is not opening brought it to freeman Hyundai here in Irving and after a month I am still experiencing the same problem.