Electrical System Problems of Hyundai Santa Fe - part 1

I was driving on March 20, 2026 at about 12:00 pm when I suddenly noticed smoke, a strong gasoline smell, an oil smell, and a burning odor coming from the vehicle. I pulled over immediately because I believed the vehicle was unsafe and at risk of fire. The vehicle had to be towed. An independent repair shop later found a fuel leak at the high-pressure fuel line / fuel pump area, a loose ground wire on the right-hand side of the engine, a valve cover gasket leak, and engine timing chain noise. I was informed that gasoline had sprayed throughout the engine bay. This created an immediate fire hazard even though no actual fire occurred. This problem was especially concerning because the vehicle had been inspected and serviced by an authorized Hyundai dealer in December 2025, less than about 3,000 miles earlier. The loose engine ground wire and fuel leak raise serious concerns about vehicle safety and the adequacy of the prior inspection. I contacted Hyundai the same day and reported this as a fire-risk safety issue, but I did not receive timely assistance. Because immediate dealer service was not available, I had to authorize emergency repairs at a local shop for safety reasons. No warning lights were noted before the incident. The failure was confirmed by the repair shop.

See all problems of the 2013 Hyundai Santa Fe 🔎.

After performing regular oil changes, and even a new fuel pump sensor, I experienced an issue. Last oil change was within the past two weeks. Driving home from the mountains, I heard a knocking sound from the engine bay. I narrowed it down to all gears above 2500rpm, increasing knocking with rpm speed. I took it easy on the engine, mostly coasting down the mountain. Suddenly during acceleration on an uphill, a pop sounded, and copious white smoke started coming from the engine bay. I pulled over despite having no power brakes but I was fortunate to be near an off ramp in a rural area. Trying to troubleshoot roadside, I noticed fluid on the tie rod, but I wasnt able to determine what kind of fluid it was. When I try to start the car, there is one single click, the engine wont even attempt to turn over. Oil, battery and check engine lights are all on. After towing, I found that the fluid leaking from the vehicle is oil. The vehicle is currently at a transmission shop, but from my research, this isnt a transmission issue but a blown rod bearing the Hyundai engines are know for. I will be contacting a dealership to see if they will at least confirm my diagnosis.

See all problems of the 2017 Hyundai Santa Fe 🔎.

Engine rattles noise when starting the car after sitting for more than an hour it makes that sound another issue is that when I turn the headlights on all interior lights shuts off including the instrument cluster radio and ac climate control buttons.

See all problems of the 2008 Hyundai Santa Fe 🔎.

Bottom brake lights will not work but top high brake light works. I was stopped by police three times. They state all three brake lights must operate.

The contact owns a 2010 Hyundai Santa Fe. The contact stated that while driving at an undisclosed speed, the vehicle stalled. No warning lights were illuminated. The vehicle failed to immediately start, but started after several attempts. The vehicle was taken to an independent mechanic, who replaced the starter, oil filter, and engine filter, and changed the oil. On a hot day, there was a loud sound coming from the vehicle, and it was noticed that the unoccupied vehicle was attempting to start independently. The contact unlocked the vehicle and opened the vehicle door, put the keys in the ignition, and continued to crank for approximately four minutes. The accelerator pedal was pumped, and the vehicle stopped. There was smoke coming from the vehicle, and the vehicle eventually stopped. There were flames coming from the vehicle. The contact called 911, an independent mechanic, her father, and the fire department. The fire department was able to extinguish the fire and disconnect the battery. The mechanic determined that the engine cover was burned. There were no reported injuries. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The contact indicated that the failure was related to NHTSA campaign number: 11e040000 (equipment). The insurance company referred the contact to the NHTSA hotline for assistance. The manufacturer was not contacted. The failure mileage was approximately 145,000.

See all problems of the 2010 Hyundai Santa Fe 🔎.

2024 Hyundai Santa Fe purchased new in may 2024. On three occasions since December 2025, while driving, the dashboard went completely black as if the vehicle shut off. The Hyundai startup logo then reappeared while the vehicle was still moving, and the vehicle lost acceleration. The most recent event occurred at highway speed, approximately 65-70 mph, requiring us to coast to the shoulder. No warning lights appeared before the event. A video of the most recent incident is available. Dealer inspected vehicle but could not duplicate the problem and reported no error codes.

See all problems of the 2024 Hyundai Santa Fe 🔎.

All normal sounds completely stop working, no audio or volume at all: no turn signal, no collision warning, no gps audio, no radio; no hands-free phone volume. Hyundai service department advised they have never heard of this type of incident. All warning systems are completely silent.

See all problems of the 2025 Hyundai Santa Fe 🔎.

On the morning of February 20 2026 at around 6:35am. I was on my way to work when the engine light started flashing and the speed started to decrease. I was traveling on a major highway in heavy rain with a lot of traffic. I had to put on my hazard lights and quickly pull off the road. The code given is p1326 which has to do with the engine and wiring harness. I just purchased the vehicle on Jan. 17 2026. The carfax stated no open recalls.

See all problems of the 2020 Hyundai Santa Fe 🔎.

After turning off the radio with the push button control the instrument cluster and navigation display panel went completely dead black. After pushing multiple buttons several times the panel came back to life. This has not yet been reported to the dealer. On 12/12/2025 this same vehicle also experienced faulty engine / power train components which required replacement @1199 miles. Throttle body assembly and torque converter assembly which caused loss of power when accelerating onto a high speed parkway attempting to reach @55mph along with excessive vibration when brakes were off. Took dealer 22 days to fix the problem.

Incident description: I am reporting a recurring and dangerous safety defect involving the adas (advanced driver assistance systems) on my 2024 Hyundai Santa Fe hybrid. On multiple occasions, the vehicle has exhibited uncommanded steering input. Even when the lane keeping assist (lka) system is manually disabled by the driver, the vehicle software overrides this command and re-activates the system without driver input, causing unpredictable steering behavior. System failures & error codes: the vehicle intermittently displays a "check forward attention warning system" failure. Dealership diagnostics have confirmed the following historical fault codes related to module communication: •c164286, c168886, c16b902, c28b981 related safety recalls: this vehicle is currently subject to recall 265 (NHTSA 24v561000) for main floor wiring harness chafing and recall 288 (NHTSA 25v808000) for rearview camera wiring tension. I believe the uncommanded steering and camera failures are direct results of the electrical interference or harness damage described in these active safety recalls. Safety risk: the uncommanded steering override creates an immediate risk of a crash, especially in high-speed highway conditions where the vehicle may unexpectedly pull against the driver's intent.

Vehicle experienced sudden loss of power while driving. Transmission warning and abs warning lights appeared at the same time. The vehicle would not shift properly and began skipping and dropping gears. Smoke was visibly coming from the center underside of the vehicle near the transmission area. There was a strong burning oil or rubber smell inside and outside the vehicle. This created a serious safety risk due to loss of acceleration and potential fire hazard from smoke and burning odor. The issue has been intermittent since early ownership, including jerky shifting and hard engagement. The dealer documented dual clutch transmission communication faults and abs faults but returned the vehicle the same day stating it was a loose ground. The problem has continued after repair. Vehicle is available for inspection. The defect involves the powertrain and related electrical systems.

Needed to use horn in an emergency situation and that's when I found out my horn no longer works. 20,000 miles on 2023 Hyundai Santa Fe.

See all problems of the 2023 Hyundai Santa Fe 🔎.

-shift lever in transmutation stopped working so car would go into auto shut off and then would not drive once I took my foot off the break. Would not switch gears or drive. Had to shut car off then turn back on to get it to switch gears. -safety was put at risk majorly. Car did that in 5 lanes of traffic with me and kids in car and couldn’t drive. We almost got hit. -dealership said no issues found until I took it in a second time for the same issue then they said it was the translation shift leaver. -briggs kia inspected it -no warnings at all -this happened multiple times. Put the most current date.

See all problems of the 2021 Hyundai Santa Fe 🔎.

I turned off the car and went inside the house. I was outside and could smell smoke. I walked to the front of the house and saw my neighbor who was calling 911 due to flames from my engine. The flames reached the yard and my garage where minor damage occurred. The vehicle was completely engulfed in flames before the fire department extinguished it.

See all problems of the 2016 Hyundai Santa Fe 🔎.

I tried to drive my 2025 Hyundai Santa Fe hybrid; the vehicle displayed a gear selection error message stating something like "gear already selected". The vehicle would not shift properly and would not power off or restart. I attempted multiple shutdown and restart attempts using the start/stop button with no success. The vehicle remained in this condition for about 30 minutes and would not allow normal operation or shutdown. Due to safety concerns, Hyundai roadside assistance was contacted and a tow truck was dispatched. Before the tow arrived, the vehicle spontaneously allowed shutdown without any intervention. This was a safety related failure involving the shift-by-wire system and vehicle power-down logic. The issue occurred without warning and left the vehicle inoperable. The vehicle had app 7150 miles at the time of the incident.

My starter failed while out shopping. No issues starting the car departing from my home, but would not start in the store parking lot. My mechanic did not provide the broken part for inspection however everyone commented that is was very unusual for it to fail as I only have roughly 25,000 miles on it. My mechanic also mentioned that this was 2nd 2018 Hyundai sante fe in the past week he had to replace the starter on that vehicle had 60,000 miles. There were no warning lights prior to the event, I suspected it was the starter after having a new battery installed and no success starting because of the lights that remained on on the instrument panel.

See all problems of the 2018 Hyundai Santa Fe 🔎.

What component or system failed or malfunctioned, and is it available for inspection upon request? horn how was your safety or the safety of others put at risk? my horn stopped working - cannot use it when driving to warn other drivers - safety issue has the problem been reproduced or confirmed by a dealer or independent service center? not reproduced, but dealership has confirmed the horn stopped working on three separate occasions. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? dealership - three times were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? no. Hyundai dealership said my fuse blown on three separate occasions causing the horn to stop working. My horn stopped working a few months ago, then about a month ago and again last week - all due to blown fuses to which the dealership has no explanation.

Horn stopped working at 47,474 miles check tire pressure system light is on, poor sensor at 45,650.

Took my 22 sante fe to the Hyundai dealership to have the blower motor checked since I have no air flow in my car. Dealership informed me that the engine harness needs replaced and that it melted the fuse box under the hood. So, I am not able to replace my blower motor at this time due to the melted fuse box. Dealership also advised that they have seen the same problem in multiple 22 sante fe. And that there is likely more with the same issue within the united states. I have been noticing a melting/hot smell in the car before the airflow quit and I took it to the dealership to be diagnosed.

See all problems of the 2022 Hyundai Santa Fe 🔎.

Was coming off an exit on the interstate and started slowing down. My brakes act like they didn’t want to work. Grinding and the pedal was twitching under my foot. The car stopped thankfully, but then all linda of lights came on the my dash and will not go off. And 3 warning come up!.

I am writing to formally report an incident involving the service department at lakeland Hyundai (1500 w memorial blvd, lakeland, FL 33815). My 2007 Hyundai Santa Fe was brought in on 12/31/25 for an active engine recall involving the cylinder head cover oil leak repair (recall code 976 / campaign 24-01-026h). The vehicle was driven into the dealership in proper working condition. I was later informed that allegedly stripped bolts for the cover would require an out-of-pocket cost of $483. 36, despite this being a recall repair. There was also a required upper timing chain guide repair quoted at $58. 38 to complete the recall work. When I was called in on 01/12/26 to pick up the vehicle for completed work, I was charged $29. 99 for a multi-point inspection related to the recall, yet no documentation or billing was provided for the timing chain guide repair I was told was completed. Upon attempting to leave the lot, the check engine light was on and the vehicle immediately began shaking violently and producing a loud noise. The service representative could not identify the cause and later advised there was nothing further they could do, citing a p0300 code, and instructed me to return the loaner and retrieve my now-undrivable vehicle. My vehicle remains at lakeland Hyundai and is undrivable due to issues that arose immediately following recall service. I respectfully request guidance and resolution regarding responsibility for the damage, loaner coverage, and loss of transportation.

See all problems of the 2007 Hyundai Santa Fe 🔎.

My 2025 Hyundai Santa Fe hybrid has recurring powertrain communication failures starting at only 67 miles and continuing at 5,300 and 6,200 miles. Diagnostic trouble codes include u010100 (lost communication with engine control module) and multiple u100xxx codes related to transmission and can bus communication failures. These indicate loss of communication between critical control modules. The issue has happened multiple times and remains unresolved. I am concerned this could cause drivability problems, warning lights, or sudden loss of power. This appears to be a system-level defect in the vehicle’s communication network.

Horn stopped working due to the same issue other Hyundai horns stopped working.

The contact owns a 2018 Hyundai Santa Fe sport. The contact stated that the headlights suddenly illuminated without the vehicle being turned on, causing the battery to be drained. The contact recharged the battery to start the vehicle. The contact stated that the light switch failed to turn off the high beam headlights; however, the headlights and the indicators were no longer illuminated. The vehicle was towed to the dealer, who stated that the junction block had failed and needed to be replaced; however, the contact was not sure of the cause of the failure and needed to repair the vehicle. The dealer diagnosed the vehicle that an interlock casing, fuse, and relay that had melted, and that the switches were not responding, but could not confirm what caused the failure. The contact learned that the vehicle was previously included in a recall for another junction box that had been repaired. The contact was unable to provide the recall campaign. The vehicle was not repaired. The manufacturer was informed of the failure and opened a case. The failure mileage was approximately 18,000.

Official dealer refusal to perform critical safety recall (VIN: [xxx] ) description: I am reporting a formal refusal by the official Hyundai distributor in the dominican republic (magna motors) to perform critical safety recalls on my us-spec vehicle. Pending recalls: recall #251 (NHTSA 23v651000): abs module fire risk. Campaign #953: ksds software update. The dealer (magna motors) refuses to perform the service, claiming a "lack of tools," and has declined to provide a written explanation for this denial. This is a severe violation of safety regulations regarding life-threatening defects (fire risk). As the vehicle is a us-spec unit, I request NHTSA’s intervention to ensure the manufacturer (Hyundai) compels its local representative to complete these repairs immediately at no cost. Please note: I am using a us mailing address only to complete this form. The vehicle and I are physically located in the dominican republic. The local official distributor, magna motors, is failing to honor these NHTSA safety recalls. " information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Supplemental update – ongoing safety concerns and extended loss of use since submitting my initial complaint, my leased Hyundai vehicle (VIN [xxx] ) has now been presented for service for the third time for the same unresolved safety-related issues. The vehicle has been held by the dealership for eight (8) consecutive days during this service visit with no resolution and no clear timeline for return. Safety concerns remain unresolved, including: persistent toxic/chemical odor inside the cabin random rear hatch opening while vehicle is parked and locked repeated false “windows open” alerts electrical/body control system irregularities to date, I have not been provided with documentation confirming that cabin air quality testing, exhaust intrusion testing, or comprehensive electrical diagnostics have been performed. These unresolved conditions present ongoing safety risks and loss of use. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

My car was locked and battery had died. I was able to get in car with key from fob. I had to put car charger on battery in order to start car. This car is a year old with 18,531 miles.

Vehicle will suddenly shutdown in the middle of the road. This could easily have caused a crash at any time. Several batteries have been replaced due to alternator not charging the battery. Then the battery has to be jumped for emergencies. I have taken the car in for repairs of the recall twice. I was told that the front end would come off and parts would have to be replaced because of the age of my vehicle they would not fit again. I need a solution to this problem.

See all problems of the 2009 Hyundai Santa Fe 🔎.

The contact owns a 2018 Hyundai Santa Fe sport. The contact stated that while driving at 25 mph and approaching a stop, the vehicle stalled. The battery, check engine, and oil warning lights were illuminated. The contact stated that the failure was related to NHTSA campaign number: 22v810000 (service brakes, hydraulic). The vehicle was towed to the local dealer, where an unknown diagnosis was provided. The vehicle was not repaired. The warranty claim was denied. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 160,000.

Engine control harness with under fuse box due to melted fuse box. This caused my blower motor and relay to go bad. No air flow currently in car due to control harness. Dealership stated that there has been several sante fe that has came in this year with the same issue.

Horn completely out, yes available. I was unable to warn another driver from entering my lane several times. Warn a pedestrian from stepping out into traffic. Confirmed by the dealer. The horn was inspected replaced at my own cost on March 2025 by December 2025 the part is no longer operational. I asked the dealer to honor the warranty they declined saying the mileage was passed the warranty terms.

Started car, reading paperwork and suddenly my car went into neutral bycitself and rolled backwards in a parking lot. Thank goodness no one was walking behind my car. This is the 2nd time it has happened. Additionally, twice previously, my car screen blacked off. 1 other time while sitting at a traffic light, the car shut off. I have been patient but now I'm afraid ti drive this car with only 2,650 miles on it.

-I had just exited from the highway and was driving into my town. While doing so, I had both hands on the steering wheel and suddenly the car started beeping and flashing warnings/ alerts indicating that my hands were not on the steering wheel, which they were. Within seconds the car began to deaccelerate and pull me off the road to my right hand side. I initially had no control over the vehicle. Then again- without explanation it began to register hands on the steering wheel and I was able to resume control of the vehicle. I believe the lane assist feature was on at the time. It all happened very quickly. Had I still been on the highway as I was moments before, there was enough traffic that I would have been pulled into another vehicle or caused an accident if people saw me suddenly rapidly deaccelerating/braking in front of them because they would have no warning and a very tiny amount of time to react. Then, in an other instance that followed shortly thereafter, my boyfriend was driving with one of the lane assist on. While driving, the weather changed and it began snowing and freezing rain that was freezing when it hit the windshield. The lane assist began to have trouble seeing the lines on the road since the snow and ice were obscuring them somewhat. It began to beep and gently correct the car- which was not appropriate in this case (we understand that the road conditions were beyond its abilities to safely discern things accurately). My boyfriend who had two hands on the wheel trying to carefully navigate this sudden burst of weather so at not to slide. He tried turning it off, but it wasn't turning off, and couldn't troubleshoot it without taking his hands off the wheel. He instructed me to turn it off through the settings menu in the infotainment system, which seemed to disable it. Prior to these dangerous problems, I had experienced some seemingly sensor- related malfunctions with the tire pressure monitoring system. I'm out of room to write more.

While driving my 2024 Hyundai Santa Fe, the vehicle experienced a complete dashboard and system blackout, as if the vehicle shut off and rebooted. This has occurred on two separate occasions. On one occasion, while stopped at a traffic light, the dashboard went completely black and restarted. After the system rebooted, the vehicle would not accelerate or move when the accelerator was pressed. I had to turn the vehicle off, restart it, and wait before it would drive again. The suspected malfunction involves the vehicle’s electrical/infotainment and related vehicle control systems. The vehicle is available for inspection upon request. My safety and the safety of others were put at risk because the vehicle lost critical dashboard information and temporarily lost the ability to accelerate while in traffic, creating the risk of being struck by other vehicles. The vehicle was inspected by an authorized Hyundai dealership (world Hyundai of matteson). On December 23, 2025, I was informed by the dealer that a system/infotainment “glitch” had been identified and that a replacement part would be ordered. However, the part was never replaced. The dealer later stated that because the issue could not be duplicated during test drives (approximately 85 miles driven), the repair was not authorized. The dealer acknowledged the issue could not be reproduced on demand. The manufacturer (Hyundai) has not yet physically inspected the vehicle beyond dealership involvement. No police or insurance inspections occurred, as there was no crash. There were no warning lamps or messages prior to the failure. The failure occurred suddenly with a complete dashboard blackout and system restart. The first occurrence happened prior to December 23, 2025; the second occurred afterward. The issue is intermittent and unresolved. I am concerned that the defect must reoccur while driving in order to be repaired, posing an ongoing safety risk.

While driving- in total movement- the car completely shut off. Without any prior warning or indication. Immediately after, the car restarted, drove a couple blocks over, continuing to shut off while driving. It was then towed. How was your safety or the safety of others put at risk? the warning lights did not appear until after the car quit. They all came on & flashed & quickly went back out. Uncertain which component misfired or is affected- possibly related to an engine or fuel/ cylinder failure. Car is at mechanic for inspection. Our safety & lives were in critical jeopardy as the vehicle stopped without warning while driving in traffic congested area. It is unknown if this is a known issue or if this situation has been replicated however the current mechanic facility has experienced the same issue with this vehicle. Also strong odor of gas was experienced during shutoff.