2025 Hyundai Tucson Hybrid

I am reporting a major safety hazard on my 2025 Hyundai Tucson Hybrid Limited. The car has a bad wiring connection behind the dashboard that causes the screens to black out and critical safety systems to fail. I have taken it to the dealer 5 times, but they haven't fixed the hardware issue. Over the last week, the problem got much worse. On Monday, November 2, 2026, the main navigation screen went completely black while driving. Then, on Thursday, November 5, 2026, as soon as I started the car and before I even began driving, the computer network crashed. My dashboard immediately showed a "Check Driver Assistance" warning, and the ABS (Anti-lock Braking System) light, traction control light, and master warning triangle all turned on at the same time. All of my automatic safety brakes and cameras shut off completely right at startup. Driving a brand-new car where the speedometer goes black and the emergency brakes turn off is terrifying and life-threatening. The dealer is refusing to replace the bad wiring harness.

NHTSA ID

11776411

Incident

Nov 5, 2026

On approximately three to four occasions, my 2025 Hyundai Tucson Hybrid has suddenly jerked or decelerated while driving, creating the sensation that the brakes were being applied unexpectedly. During there episodes, the vehicle did not respond normally to acceleration until the apparent braking released. A particularly dangerous incident occurred on XXX, when I was entering traffic after leaving a Subaru dealership in [XXX]. The vehicle unexpectedly jerked and failed to accelerate normally while applying the gas pedal. Another driver had to brake to avoid a collision with my vehicle. Hyundai Recall 302 addressing potential unexpected activation of the forward collision avoidance braking system, had already been completed on my vehicle on June 30, 2026. I reported these recurring incidents to the Zimbrick Hyundai service manager on XXX. The braking concern has not been diagnosed or repaired. I do not know whether these incidents are related to Recall 302 or another malfunction. However, I am concerned about unexpected braking or deceleration occurring in traffic and the risk of a serious collision. Attached are documentation confirming completion of Recall 302 on June 30, 2026 and email correspondence with Zimbrick Hyundai service manager documenting my report of the recurring braking incidents dated XXX. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11776352

Incident

Sep 25, 2026

While driving my 2025 Hyundai Tucson Hybrid on [XXX] toward [XXX] at approximately 70 mph on XXX, multiple safety system lights illuminated on the dashboard, and my turn signals stopped functioning. The dashboard turn signal indicators and audible clicking were not working. After shutting off and restarting the vehicle, the malfunction resolved. I brought the vehicle to Zimbrick Hyundai East [XXX] on XXX, for evaluation. The dealership identified eight historical diagnostic trouble codes across six vehicle systems, including multiple electronic communication errors, but no active codes. Following a 16 mile test drive, the technician was unable to reproduce the malfunction or identify its cause. No corrective repairs were performed. The vehicle has approximately 15,600 miles at the time of inspection. I am concerned this intermittent malfunction could recur while driving, preventing me from safely signaling turns or lane changes. The cause remains unidentified and unresolved. The attached photograph, taken XXX at approximately 8:42AM, shows one of several warning messages I reviewed during the incident. Multiple other safety system warning in indicators remained illuminated. I stopped reviewing them because doing so while driving was unsafe. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11776344

Incident

Oct 27, 2026

On Thursday night, XXX, my [XXX] son was operating the vehicle under normal highway driving conditions in [XXX]. He was driving in the left-hand passing lane with adaptive cruise control (ACC) and lane following assist (LFA) system activated. Without warning or driver input, the vehicle's adaptive ACC with LFA system malfunctioned, the car drifted to the left, overriding driver control. This unexpected system intervention caused the car to veer entirely off the left side of the highway into the grass and woods, where it struck trees and flipped over. The crash was severe enough to trigger full airbag deployment. The vehicle's integrated BlueLink system automatically activated upon impact, initiating an emergency call to dispatch an ambulance and local police to the scene. My son survived without any major physical injuries, but the vehicle is heavily destroyed. The XXX State Police - Stroudsburg has documented this under case number XXX. I have followed all servicing guidelines on this one year old car and downloaded all software updates as received. I see that this model year has a history of automated system faults, and this left hand malfunction directly caused a severe rollover accident. I have asked Hyundai to download the Event Data Recorder (EDR) data and preserve it before the vehicle is altered or dismantled. I have also informed my Geico insurance appraiser to preserve the data and coordinate with Hyundai. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11775035

Incident

Oct 29, 2026

While trying to start my 2025 Hyundai Tucson SEL hybrid that was parked on incline with 13,000 miles on the vehicle, the gear shift was stuck on Neutral and we could not even turn-off the engine. The failure occurred onXXX while parked at XXX Market ([XXX]. The vehicle was stuck on "Neutral" and the gear could not be changed nor could we even turn off the engine. Furthermore, because the car was parked on an incline, we had to apply break until car simply allowed us to have control over the gear shift function after about 30 minutes. As a result, we were highly distressed and could not even go out of the car in fear of car rolling back and crashing into another car or people. Fortunately, there was no crash, no injuries. The vehicle was taken to dealership but no diagnosis or repair performed since they required leaving the car at dealership for extended time and the dealership did not have the loaner car, which was included in the purchase warrantee. I believe this condition creates a safety hazard because the same scenario of being parked on incline on Neutral could happen anytime. The problem has not occurred again but we are extremely concerned for our safety. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11774002

Incident

Aug 20, 2026

While driving down the road, the engine randomly cut power and the battery died about 20 minutes later. Without any known cause, with all up to date maintenance and regular checks the vehicle stopped randomly.

NHTSA ID

11773808

Incident

Sep 24, 2026

While driving down the road, the engine randomly cut power and the battery died about 20 minutes later. Without any known cause, with all up to date maintenance and regular checks the vehicle stopped randomly.

NHTSA ID

11773807

Incident

Sep 24, 2026

Display cluster recurring issue even after repair and software update. All warning lights on while at highway speed. Initial event in July 2025 - repair done. Coincidental with recall notice related to cluster display. Blank screen/cluster display while driving on July 30, 2026 - with eventual repair within same week. But, in October 2026 - all warning lights re-appeared intermittently from just flashing to steady display of at least 2 mins. Service date (third of same issue- excluding during regular maintenance where recall update done) already scheduled 10/26/26 at dealership.

NHTSA ID

11773476

Incident

Oct 23, 2026

This bulletin provides information related to the navigation and head unit software changes introduced in the 2026 2nd Navigation Map and Software Update. The changes may vary depending on vehicle type, model, and navigation system. Refer to the 2026 2nd Navigation Map and Software Update Key Improvements and Additional Improvements tables in this TSB for a list of specific changes. The software can be downloaded via Navigation Updater (NAU) and updated by USB.

Some vehicles equipped with internal combustion engines may exhibit higher-than-expected engine oil consumption. This bulletin outlines the combustion chamber cleaning procedure for vehicles diagnosed with this condition. All internal combustion engines consume some engine oil during normal operation, depending on driving conditions and mileage, and this procedure should only be performed when deemed necessary based on inspection and diagnosis of the vehicle as outlined in TSB 26-EM-015H, Engine Oil Consumption – Inspection & Repair Guidelines, or the latest revision.

Certain vehicles equipped with internal combustion engines may exhibit higher-than-expected engine oil consumption. This bulletin provides the inspection and repair procedures for vehicles exhibiting this condition. All internal combustion engines consume engine oil as part of normal engine operation. Oil consumption rates may vary based on mileage, operating conditions, driving habits, and maintenance history. Hyundai recommends following the prescribed maintenance schedule and periodically checking the engine oil level using the dipstick to maintain proper engine oil level.

Some Tucson (NX4, NX4A, NX4M), Tucson Hybrid (NX4 HEV), and Tucson Plug-In Hybrid (NX4 PHEV) vehicles may exhibit a 12-volt battery drain due to the passive entry feature of the Digital Key 2 premium causing repeated wakeup of the vehicle. This bulletin provides instructions to perform software updates for the Ultra-Wide Band (UWB) and Body Domain Control (BDC) modules.

Some Palisade (LX2), Tucson (NX4), and Tucson Hybrid (NX4 HEV) vehicles may experience battery drain due to continuous operation of the cooling fan after vehicle ignition has been turned off, potentially resulting in a no-start condition. The continuous cooling fan operation is caused by a stuck relay in the engine room PCB block. This bulletin provides instructions to replace the engine room PCB block to ensure the proper operation of the cooling fan.

This bulletin provides information related to the navigation and head unit software changes introduced in the 2026 1st Navigation Map and Software Update. The changes may vary depending on vehicle type, model, and navigation system. Refer to the 2026 1st Navigation Map and Software Update Key Improvements and Additional Improvements tables in this TSB for a list of specific changes. The software can be downloaded via Navigation Updater (NAU) and updated by USB.