Hyundai Santa Fe Sport check engine light comes on

Filed Nov 5, 2026 · Engine · TX · 1 injury

the federal safety agency SAFETY & CAMPAIGN NON-COMPLIANCE COMPLAINT (VIN: [XXX] | HYUNDAI CASE #XXX): On XXX, my 2013 Hyundai Santa Fe Sport 2.4L Theta II GDI (covered by Hyundai Warranty Extension TXXI Limited Lifetime Warranty under TSB 22-EM-001H-1 / the federal safety agency MC-10211673-0001 and Service Campaign T3G / the federal safety agency [XXX]) entered Engine Protection Mode (Limp Mode) with flashing Check Engine Light / DTC P1326 and a severe metallic connecting-rod bearing knock under 2,000 RPM. At 8:00 AM on XXX, I brought the vehicle to Huffines Hyundai Plano ([XXX]). Despite the federal safety agency ID [XXX] mandating an immediate Service Rental Car (SRC) or 3rd-party rental upon reception ("reimbursed regardless of PA's decision") and prohibiting diagnostic fees after Campaign 953/KSDS, the dealership refused a loaner, told me diagnosis would take a full week while I rent a car out of pocket, forced me to drive the unsafe vehicle in Limp Mode to take my disabled father to a medical appointment, and stranded us in the lobby for 7 hours (causing my father to miss scheduled prescriptions and failing to restore his disability placard). At 2:00 PM, the dealership claimed the vehicle "PASSED" the Bearing Clearance Test (BCT) without giving me the mandatory BCT printout or multi-point inspection sheet, cleared the P1326 code, performed a KSDS software update instead of inspecting the knocking engine, refused to record the mandatory STUI Engine Noise Video or submit a Warranty Prior Approval (PA), and tried to coerce me into signing a falsified Repair Order stating "CUSTOMER IS DECLINING DIAGNOSTICS." At 5:33 PM, HMA Executive Case Manager [XXX] ([XXX]) falsely stated in writing that TXXI is capped at 10 years/120,000 miles (confusing TXXC with TXXI), that T3G does not apply, and that passing BCT means "your rod bearings are in working order." CRITICAL HIGHWAY SAFETY FAILURE (RECORDED ON VIDEO): On the night of Wednesday, XXX — just hour INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Nov 2, 2026 · Engine · GA

On XXXX, my 2016 Hyundai Santa Fe Sport AWD (VIN [XXX], ~89,151 miles) developed a flashing check-engine light while driving — an active misfire condition. An OBD-II scan pulled code P1326, Hyundai's knock-sensor detection code for connecting-rod bearing wear in the Theta II engine family, the same defect family covered by Hyundai's lifetime bearing-warranty extension under Service Campaign T6G (TSB 22-01-023H-1). The vehicle was towed to Grand Hyundai of Canton (repair order #XXX). The dealer performed the bearing clearance test (BCT, TSB 21-EM-004H-1) on XXX, and recorded only "PASS." The printed result from the dealer's own GDS diagnostic tablet shows PASS with no numerical clearance values, even though this is a measurement-based test. The knock sensor was NOT replaced, and a KSDS software update was performed. The final invoice was $0. I have asked, in writing and repeatedly, for the actual numerical clearance measurements from that test. I have not received them. What I have received instead is a contradiction: On XXX, at vehicle pickup, the dealership's service manager told my wife, [XXX], that the dealership does not have access to those results and that only Corporate has those measurement results. When she asked him to put that statement in the service notes, he refused — "we will not put that in the notes" / "she could not write it down." Service advisor [XXX] was present beside the manager, relayed the request to him, and relayed the refusal back; she witnessed both the statement and the refusal. The same manager had told me by phone that only Hyundai Corporate has the measurements. On XXX, Hyundai National Consumer Affairs Supervisor [XXX] wrote the opposite: that "diagnostic, testing and reporting results done by the dealerships are retained by the independent location" and only the servicing dealership can provide them. She refused to provide the numbers herself and said INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 15, 2026 · SC

FORMAL VEHICLE SAFETY AND WARRANTY COMPLAINT Date: [XXX] From: [XXX] Vehicle: 2013 Hyundai Santa Fe Sport, 2.4L Theta II engine Mileage: Approximately 150,000 miles (exact current reading to be confirmed) Subject: Recurrent Check-Engine Warning Following Repeated Repairs; Request for Theta II Engine Investigation I am submitting this complaint to formally document recurring engine-related symptoms affecting my 2013 Hyundai Santa Fe Sport, and my repeated requests for investigation of a possible connection to the known Theta II engine defects and related warranty programs. On [XXX], the check-engine light illuminated again. Previously, on three separate occasions, the vehicle experienced a flashing check-engine light and a light ticking noise while idling. I was advised each time that the knock sensor was responsible, and the sensor was replaced. The vehicle returned to normal operation after those repairs, but similar symptoms subsequently recurred. While my vehicle was still below the 150,000-mile threshold, I repeatedly expressed concern that the symptoms could relate to the Theta II engine issue. During the most recent dealership visit, resulting in repairs on September 10, 2026, I emphasized that the recommended valve-cover gasket and spark-plug work might address a secondary issue without resolving the primary recurring problem. The check-engine light has now returned approximately five weeks after that repair. I am not claiming that a connecting-rod-bearing defect has been conclusively diagnosed. I am asking that the possibility be properly evaluated and that my earlier reports, repair attempts, and the mileage at which I first raised these concerns be preserved and considered when warranty eligibility is reviewed. I am sending this as a record of contact and communication.. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 15, 2026 · Engine · IN

Started car to reverse out of parking space and it started jerking as I accelerated. Drove jerkily the few blocks I had to go to make it home. Did not drive again but upon starting it the check engine light came on. Contacted Hyundai customer care who told me my car was covered under two extended warranties for a well documented engine failure on this exact vehicle - Hyundai Santa Fe Sport 2017. I’ve been researching and Hyundai knows about this problem and it had been through the courts after group legal action was taken. Hyundai refuses to pay for the car they know is a failure to be diagnosed. I cannot afford to have the car diagnosed especially not for a problem that Hyundai and half the world know (and have documented) is Hyundai’s fault. Vehicle can not be driven.

Filed Oct 12, 2026 · Electrical, Engine · FL

I was driving my car and it showed no signs of any issue but the engine light came on and started blinking so I pulled over and got it towed to a mechanic. He told me that I would need a new engine that would cost me $8000. I looked into it and found that there was a defect with my vehicles engine and that if I took it to a dealership, I could possibly get it covered 100% so I did that and then they covered it and when I got the vehicle back, it had an issue every time I drove it where it was kind of speeding up and jerking when I drove it, I took it back after I told them what happened and then they told me that my catalytic converter was bad and needed to be replaced. I ended up paying $1500 to get that replaced and when I got the car back again it’s still jerking and doing the same exact thing even worse. I contacted them. They told me to bring it back which I did and they told me that it needed a software update that was not available so that I would just have to be patient. They told me that anytime I wanted to drive it I had to let it warm up for 5 to 10 minutes and that it wouldn’t do that. I’ve had my vehicle back for over two weeks and it doesn’t matter if I warm it up or not it’s still doing the same thing. I do not feel safe driving this vehicle and I have not been giving any resolution by either the dealership or by the consumer affairs case manager that I have been working with on this. This has been an ongoing issue for three months now. It’s costed me hundreds of dollars in Ubers because I don’t feel it’s safe to drive.

Filed Oct 5, 2026 · Engine · WA

While driving over the pass the car suddenly lost power and was running very rough. Luckily there was an exit close by that we took and the engine died on the exit. We were able to get it started and get to a parking lot where it died and would not start again. While trying to start it in the parking lot the check engine light came on. So, after a $375 tow to the nearest town the mechanic discovered a damaged spark plug and the compression test showed 0 psi. The scope showed a hole in the piston. The car also leaks and burns oil. The mechanic recommended scrapping the vehicle since it would not be cost effective to repair it. The mechanic said ours is the 6th Santa Fe in their shop with a blown engine in the past month. It has not been inspected by anyone else.

Filed Aug 26, 2026 · Engine, Fuel system · NJ

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?

Filed Aug 14, 2026 · Engine · 89,687 miles · CA

The contact owns a 2014 Hyundai Santa FE. The contact stated that while driving the vehicle at 60 mph the vehicle began to shake violently, and the engine experienced a complete loss of automotive power, the service vehicle soon, ABS and check engine warning lights were illuminated. The contact veered off an exit into the parking lot of an AutoZone where a diagnostic scanner displayed the code "P0302". The vehicle was towed to an independent mechanic where it was diagnosed, and the contact was advised that the exhaust valve on cylinder two had dissolved and needed to be replaced. The vehicle was towed to a local Hyundai dealer where it was diagnosed, and the contact was advised that the exhaust valve in cylinder two was faulty and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 89,687.

Filed Aug 13, 2026 · Electrical, Engine · NC

The vehicle suffered a severe engine overheating failure that created an immediate fire risk and electrical safety signaling failure. A brand-new replacement engine was installed by an authorized dealership in April 2026 under a goodwill warranty and had only been driven ~ 3,100 miles since installation. While operating the vehicle, the air conditioning suddenly stopped functioning. Upon restarting, the check engine light illuminated; however, there was never any dashboard temperature warning indicator, notification, or chime to alert the driver to an active overheating situation. Shortly after, the engine completely disabled itself and died while in transit in a parking lot. AAA was contacted to tow the vehicle. Smoke was visible coming out of the engine's oil dipstick and oil intake spout before being towed. After being towed home, an overwhelming chemical burning odor was noted and continued to get worse. A physical check revealed that the oil level on the dipstick was critically overfilled a full inch above the maximum fill line. The local fire department responded to the scene to mitigate the thermal risk, ordered the battery disconnected due to safety hazards, and deemed the vehicle entirely unsafe to operate or connect to power. This represents a catastrophic failure of critical safety equipment and onboard driver warning networks on a newly installed engine assembly, presenting an active safety and fire hazard to passengers. An official corporate safety case has been opened with Hyundai Motor America under Case Number: 43112676.

Filed Aug 10, 2026 · Engine · 105,225 miles · SC · fire

The contact owns a 2016 Hyundai Santa Fe Sport. The contact stated that while driving approximately 65 MPH and attempting to overtake another vehicle, the vehicle lost automotive power and decelerated with the check engine, battery, and oil warning lights illuminated. The vehicle was parked on the shoulder of the highway, and smoke was coming from under the hood of the vehicle. The contact stated that after parking on the shoulder, the brakes erroneously activated, and the vehicle failed to move forward. The contact stated that moments later there were flames and smoke was coming from under the hood. The contact exited the vehicle. The Fire Department was called to the scene, and the flames were extinguished by the firemen. The vehicle was destroyed in the fire. The vehicle was later towed to the residence. The cause of the failure was not yet determined. The manufacturer and local dealer were not contacted. The failure mileage was 105,225.