725 of the
8,648 complaints filed about the Hyundai Tucson
are about the electrical system —
100% of everything owners reported.
The worst model year for it is 2016.
The vehicle unexpectedly entered 'Limp Mode' due to engine tracking code P1326. The vehicle severely restricts engine power and RPMs while driving on public roads, preventing normal acceleration. This creates a severe safety hazard as the vehicle cannot safely merge into oncoming traffic, accelerate away from intersections, or maintain basic road speeds, putting me at a high risk of being rear-ended.The fault is under Hyundai Theta II Txxm. I have been given the runaround by both hyunday corporate and the local dealer.
NHTSA complaint #11763199 — an unverified report by a vehicle owner.
Sudden uncommanded high engine revving 4000 rpm with loss of forward acceleration while driving. ISG (Idle Stop n Go) indicator on dashboard turned yellow and system could not manually override. Vehicle was turned off. After car turned back on after about 30 minutes It entered a Protective Limp Home Mode, which cleared the systems. All seemed back to normal. It was advised to have vehicle towed to the dealer where purchased. The vehicle has only 4,000 miles and 9 months old. To date the dealer could not replicate the malfunction and could not find any abnormalities In the codes.
NHTSA complaint #11761527 — an unverified report by a vehicle owner.
The contact owns a 2022 Hyundai Tucson. The contact stated that while driving at an undisclosed speed, the right turn signal indicator light failed to illuminate on the instrument panel upon depressing the turn signal lever to make a right turn. No warning lights illuminated. Additionally, upon depressing the turn signal lever to make a left turn, the left turn signal indicator light failed to illuminate. The contact stated that the failure progressed. While driving at various speeds, the brake lights failed to illuminate when the brake pedal was depressed. The vehicle was taken to an independent mechanic, where it was diagnosed that the wiring harness needed to be replaced. The vehicle was repaired. The contact associated the failure with NHTSA Campaign Number: 25V893000 (Trailer Hitches); however, the VIN was not included in the recall. The dealer and the manufacturer were notified of the failure, and a case was filed. The failure mileage was approximately 69,000.
NHTSA complaint #11760871 — an unverified report by a vehicle owner.
The contact owns a 2022 Hyundai Tucson. The contact stated while driving at an undisclosed speed, several unknown warning lights illuminated. The vehicle was taken to an independent mechanic, where it was diagnosed with ECU software error. The contact was advised to contact the dealer. The dealer was made aware of the failure and advised the contact to report the failure to the NHTSA Hotline. The contact referenced an unknown recall; however, the VIN was not associated with a recall related to the failure. The manufacturer was not made aware of the failure. The failure mileage was approximately 108,565.
NHTSA complaint #11760437 — an unverified report by a vehicle owner.
My wife was driving my SUV while I was a passenger. We were in the left lane, and put the left turn signal on while traveling south bound approaching an intersection to take a left turn (traveling approximately 3-5 Miles Per Hour and slowing) at the traffic light (traffic light was green). There was a car in front of us that had stopped waiting for oncoming traffic to clear and make the same left turn onto the same road as us. While traveling in this lane we hit a deep pot hole (not very visible while driving), just as we were approaching the vehicle stopped in front of us. When hitting the pot hole, our SUV seemed to leap forward a bit and when the brakes were applied to slow and stop, the braking system failed (appeared to freeze) and the brakes did not work, and because the braking didn’t work, our vehicle hit the car in front of us. Prior to and after hitting the pothole, no audible warning sounds or visible alerts appeared and no emergency braking was activated. The airbags in our vehicle never deployed. Our safety (my wife and I) as well as the safety of the 2 passengers in the other vehicle were at risk as we all could have been injured in the accident. As we needed the vehicle for transportation, we immediately began filing all the necessary police and insurance reports and brought our vehicle into an Auto Body Repair Shop to be repaired the next day. During the repair work, some of the responsible components may or may not have been replaced and the Auto Body Repair Shop also had all the car sensors recalibrated by a 3rd party, which is why we did not bring the car to a dealership to evaluate. To the best of our knowledge, the manufacturer, the police and the insurance company did not inspect the vehicle. We are not experts, but hitting a pothole might be considered an edge case, so I’m not sure that a dealership would have tried or been able to replicate the issue.
NHTSA complaint #11759064 — an unverified report by a vehicle owner.
Two instances of the center screen malfunctioning. One was an intermittent blip of the screen turning black and then turning back on while driving. Additionally, during this same instance of the intermittent blip of the screen turning off for about 3 seconds, my headlights which are set to auto also turned off while I was driving at night and then blipped back on when the screen came back at the same time. Second instance, the center screen was black and never came on when the car was initially turned on and the screen remained black for the entirety of my drive until the car was fully turned off and then back on. Yes, this is available for inspection upon request. Safety was put at risk by losing headlight visibility at night highly increasing the chances of an accident as well as losing important carplay navigational directions on center screen. Problem has been reproduced as these issues both occurred within one week (the week of August 16-23, 2026). The vehicle has not been inspected. During the time of both events there were no warning lamps or messages that appeared.
NHTSA complaint #11759123 — an unverified report by a vehicle owner.
The instrument cluster malfunctioned suddenly leaving the control panel completely black (no odometer, speedometer, speed range, turn signal indicators, etc.). The driver was therefore unable to know what speed they were driving, how much fuel remained, and lacked any sort of signal that turn signals/blinkers were on or off. It was unsafe to drive and impossible to accurately comply with legal speed limits. Local Hyundai dealership inspected the car and confirmed that the cluster had to be replaced, which they did (required 11 total days of being unable to use the car).
NHTSA complaint #11758946 — an unverified report by a vehicle owner.
COMPONENT: Infotainment main display screen. Still installed and available for inspection. FAILURE: The screen intermittently flickers, then goes blank with static. Occurs at unpredictable intervals including while driving. Ongoing and unrepaired. SAFETY RISK: The display is centered in the dashboard and houses the backup camera and vehicle controls. Flickering and static while driving creates a visual distraction, and the backup camera is unavailable when the screen goes blank. The malfunction now occurs often enough that it interferes with normal driving. REPRODUCED BY DEALER: Not reproduced during any service visit. Reported to three Hyundai dealerships: Pedder Hyundai, San Diego (May 2025): could not replicate, but accepted my video evidence and ordered parts. I relocated before the repair was completed. Hyundai Mountain View, CA ([XXX]): could not replicate. Declined to perform a diagnostic or open a warranty claim despite the same video evidence. Stevens Creek Hyundai, Santa Clara (Invoice [XXX], Aug 18-20 2026): road tested, unable to verify. Found stored code c2a2397, history in front camera menu. Infotainment software at current level. Road tested 94 miles without recurrence. Technician wrote: "If issue re-occurs, we recommend returning the vehicle to us for further diagnosis." No cause identified, no repair performed. Charged $315. I have provided video of the screen failing while driving to the dealerships and to Hyundai Motor America. INSPECTED BY MANUFACTURER: Inspected by the three dealerships above. Case opened with Hyundai Motor America Consumer Assistance in June 2026, unresolved with no written determination. Not inspected by police or insurance. WARNING LAMPS: None. No dashboard messages accompany the failure and it occurs without prior indication. First observed approximately May 2025, within weeks of delivery (delivered [XXX]). Current mileage 21,389. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11758628 — an unverified report by a vehicle owner.
This problem was observed about 1 month ago: While driving and headlights set on AUTO, during the day, and the light switch NOT on, the dashboard would indicate the lights were ON, for just a second or two, and would go off. At night with the headlights set on AUTO and the headlights ON, while driving, the headlights go OFF and ON briefly (1-3 seconds) causing a dangerous situation as visibility of road is lost. This condition was initially observed at night, after using the turn signals (left/right), but is now happening with greater frequency while driving without using turn signals. I Will schedule a visit with dealership to report/confirm problem.
NHTSA complaint #11757119 — an unverified report by a vehicle owner.
The contact owns a 2022 Hyundai Tucson. The contact stated that the check engine warning light illuminated and was cleared; however, the warning light returned hours or days later. The dealer had cleared the check engine warning light approximately 15-16 times. The vehicle occasionally stalled while driving at various speeds. The dealer diagnosed the vehicle with terminal engine failure. The contact was informed that the fuel system needed to be overhauled, and the fuel injectors and caps needed to be replaced. The vehicle was repaired twice. The failure persisted after the contact had confirmed the diagnosis with a certified mechanic. The vehicle was returned to the dealer, who replaced the engine. The vehicle was parked for several hours, and the contact attempted to turn on the headlights, but the headlights failed to illuminate. While driving the vehicle, the vehicle hesitated several times. The following day, the vehicle failed to start approximately four times. The vehicle was driven to the dealer but hesitated several times along the way and failed to start once at the dealer. The dealer diagnosed the vehicle and determined that the battery and other parts needed to be replaced; however, the vehicle was not repaired. The manufacturer was made aware of the failure, and a complaint was filed. The failure mileage was 3,212.
NHTSA complaint #11756964 — an unverified report by a vehicle owner.
I have a 2024 Hyundai Tuscon SLE that I purchased new and several months ago there was a recall on the trailer hitch wiring. I took the car to Hyundai and they removed the wiring harness hitch due to a fire danager. Todate I have not received a replacement hiring harness, so my vehicle is now useless for pulling a trailer for several months. (The spring and summer months are when I use this the most and have not been able to.) All I hear from Hyundai is that they do not have a cure for this. I notice that the 2025 and 2026 models have a wiring harness on them that do not need replacing. I need something done ASAP regarding this matter. Why has NOTHING been done regarding this replacement? It has been MUCH TOO LONG! Is there ANYONE at your organization that can help me with this matter ASAP!!!! Thank you.
NHTSA complaint #11756451 — an unverified report by a vehicle owner.
The air conditioning system in my 2024 Hyundai Tucson has never adequately cooled the cabin during high outdoor temperatures, since I purchased the vehicle. The vehicle is parked outdoors in direct sunlight daily, as I have no garage or carport access, and the issue is most severe and consistent during hot weather. This creates a heat exposure risk while driving, particularly on hot days when cabin temperatures remain uncomfortably high despite the AC running and set to the coldest setting. Prolonged exposure to excessive cabin heat can pose a safety risk, including impaired driver alertness and general heat-related discomfort/health risk. I brought the vehicle to CMA's Hyundai of Lynchburg on July 9, 2025 to report this issue; the dealership found no fault and stated the AC was working correctly. I brought the vehicle in again on August 11, 2026 with the same complaint; the dealership again reported the AC was blowing air at the correct temperature, with no fault identified. The vehicle has been inspected and is available for further inspection upon request. There were no dashboard warning lights or messages associated with this issue. The problem has been consistent since I've owned the vehicle, and is worse specifically in hot weather.
NHTSA complaint #11756153 — an unverified report by a vehicle owner.
Under Hyundai Recall 290, the dealership permanently removed the functional trailer light wiring harness and replaced it with a nonfunctional rubber dust cap. A Hyundai case manager informed me that a replacement harness is "in development," but official NHTSA remedy filings show the cap is the final remedy, resulting in the permanent loss of a factory feature I paid for. The removal of towing functionality without a clear timeline for a safe replacement parts remedy constitutes a failure to properly correct the vehicle defect.
NHTSA complaint #11755583 — an unverified report by a vehicle owner.
The contact owns a 2025 Hyundai Tucson. The contact stated that while driving at various speeds, the Forward Collision Avoidance Assist (FCA) warning light was intermittently illuminated. The dealer was notified of the failure and attributed the issue to inclement weather. The contact stated that while stopped, the vehicle was rear-ended because the brake lights failed to illuminate. The contact sustained lower back and shoulder injuries, was transported by ambulance to the hospital, and required ongoing injection treatments. A Police report was filed. The vehicle was towed to a dealer and repaired for rear-end and passenger-side damages; however, the cause of the brake lights' failure was not determined. Additionally, the contact stated that while attempting to accelerate from a complete stop at a traffic light, the vehicle stalled and was struck on the front driver's side by another vehicle. The crash caused the vehicle to spin, and the front end detached. The air bags failed to deploy, and a system failure message was displayed. The contact sought medical attention the following day. The contact sustained a dislodged left thumb bone which required surgery, a cast, and injections for left arm pain, as well as shoulder, neck, hip, and aggravated lower back pain. A Police report was filed. The second failure had occurred at [XXX]. The vehicle was towed to the auto body shop at the dealer and repaired; however, neither the dealer nor the insurance adjuster determined the cause of the vehicle stalling. The contact associated the failure with an unknown recall notification. The manufacturer was not notified of the failures. The failure mileage was unknown. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11755414 — an unverified report by a vehicle owner.
The contact owns a 2022 Hyundai Tucson. The contact stated that while his wife was operating the vehicle, the vehicle lost headlight functionality without warning. In addition, the contact stated that the radio intermittently failed to operate while driving the vehicle. The contact stated that the headlight became operable when his wife was near to her destination. The vehicle was not diagnosed or repaired. Upon investigation, the contact discovered NHTSA Campaign Number: 21V938000 (Electrical System, Exterior Lighting); however, the VIN was not included in the recall. The manufacturer was not notified of the failure. The failure mileage was approximately 25,800.
NHTSA complaint #11754364 — an unverified report by a vehicle owner.
Our dashboard went blank and said “No Signal” over two weeks ago. (recall 304). We took it in for service. They did a Software upgrade which is the stated remedy. Two days ago it did it again. This time we had it towed to the dealership. They have had it since Thursday but no word back on a solution
NHTSA complaint #11754210 — an unverified report by a vehicle owner.
On 7/29/2026, the vehicle experienced a critical safety failure involving the electronic transmission shift-by-wire system, resulting in an unintended rollaway after the ignition was turned off. While parked on an incline, the driver depressed the brake pedal and pressed the Engine Start/Stop button while the vehicle was still positioned in Drive (D). The engine shut off completely. According to factory safety design and vehicle specifications, cutting the ignition in this state is engineered to automatically trigger an electronic command to shift the transmission into Park (P). However, the vehicle failed to execute this electronic fail-safe. The electronic parking pawl did not engage, and the vehicle effectively defaulted into an un-geared Neutral state. Upon the driver releasing the brake pedal, the unanchored vehicle immediately rolled down the incline with the engine completely powered off. No audible warning chimes or dashboard fault lights were activated prior to or during the event to alert the driver that the transmission had failed to secure the vehicle.
NHTSA complaint #11753788 — an unverified report by a vehicle owner.
On July 24, 2026, while driving on a marked city street with no vehicle, pedestrian, or obstruction ahead, the Forward Collision-Avoidance system on our 2022 Hyundai Tucson Limited AWD applied emergency braking on its own, three to four separate times, each lasting one to two seconds. Traffic behind us nearly struck our vehicle. My family was in the car. This is the latest event in a progressive electrical fault history. In June 2025, under warranty at 48,037 miles, a Hyundai dealer documented recurring multi-system warning cascades (forward safety, lane keeping, high beam assist, speed limit warning) and a failed auto start/stop system. The dealer's listed resolution was "battery voltage / replace battery"; their invoice records that no repair was performed. We replaced the battery at our own expense. The faults continued. In June 2026, the start/stop system shut the engine off at a red light and the vehicle would not restart, leaving us disabled in a live traffic lane. Power was only restored by cycling the hood release. Since then, TCM and ECU software updates and a battery harness replacement (our expense, approx. $1,200) have been performed. The faults persisted after these repairs and have now escalated to uncommanded emergency braking. Date- and time-stamped video and photographs exist for multiple events. Two Hyundai dealerships have not identified a root cause. Similar phantom braking reports exist from other owners of this model year. We no longer consider the vehicle safe to drive.
NHTSA complaint #11753589 — an unverified report by a vehicle owner.
All the warning lights in the day lit up. Brake, LDWS, AEB, outside air temperature won’t read and the a/c blows hot. $486 to diagnose at dealer and they state that it’s an electrical issue due to a bad vacuum pump. I can’t get an answer as to whether the vacuum pump safety campaign was completed or not. Dealer wants $1500 to replace.
NHTSA complaint #11752545 — an unverified report by a vehicle owner.
The vehicle developed an intermittent but potentially dangerous engine control malfunction. After the engine reached normal operating temperature, the engine speed (RPM) would repeatedly surge while the vehicle was stopped in Park and Neutral, fluctuating from approximately 1,000 RPM to over 3,000 RPM without any throttle input from the driver. The condition occurred with the air conditioning turned off and could be reproduced multiple times. At approximately the same time, the Auto Start/Stop system stopped functioning and displayed a warning indicator. A malfunction indicator lamp (check engine light) also appeared during the incident. The warning light later turned off, but the engine surging continued. This unexpected increase in engine speed raises concerns about unintended vehicle movement or loss of driver control if the condition were to occur while shifting into gear or while driving. The unpredictable nature of the malfunction presents a potential safety risk to the occupants of the vehicle and to others on the road. The vehicle has been taken to an authorized Hyundai dealership for diagnosis and repair and remains under inspection. The problem is available for inspection. During my research, I found numerous reports from other Hyundai owners describing similar engine surging, idle fluctuation, and Auto Start/Stop malfunctions involving comparable vehicles. Because similar complaints appear to have been reported by multiple owners, I am submitting this report so the issue can be evaluated for a possible broader safety defect. I have videos of the incident
NHTSA complaint #11752416 — an unverified report by a vehicle owner.