2017 Hyundai Tucson electrical problems

Filed Oct 21, 2026 · Electrical, Engine · FL

On [XXX], I purchased a 2017 Hyundai Tucson from DriveTime, located at 6400 Pensacola Boulevard, Pensacola, FL 32505. Within approximately nine days of purchase, the vehicle began experiencing serious mechanical problems, raising significant concerns about its safety and roadworthiness. On [XXX], the vehicle suffered a severe loss of acceleration and was unable to exceed approximately 30 mph. This sudden reduction in engine performance created a dangerous situation while driving, particularly when attempting to maintain normal traffic speeds. Following these issues, mechanical inspections revealed water inside the spark plug wells, a severely rusted ignition coil, and a failing catalytic converter. Firestone estimated the catalytic converter repair at approximately $5,000. The presence of water and corrosion raised concerns about possible pre-existing damage and whether the vehicle had been properly inspected before being sold. The vehicle remained in repair-related custody for approximately 29 days. Despite repeated communications with DriveTime, the mechanical problems were not satisfactorily resolved. DriveTime representatives informed me that a replacement vehicle had been approved. On [XXX], I returned to the dealership expecting a replacement but was informed that no suitable vehicle was available. I was left without transportation, and the dealership failed to provide a satisfactory resolution. As of October 21, 2026, I remain without a vehicle. I am requesting that the federal safety agency investigate the sudden loss of engine power, possible electrical or ignition system damage caused by moisture intrusion, and any similar safety complaints involving the 2017 Hyundai Tucson. My primary concern is that these mechanical failures could cause another driver to experience a dangerous loss of power while operating the vehicle, potentially resulting in a serious collision. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 7, 2026 · Acceleration, Electrical · VA

While going down the highway at around 72 mph , my car went into limp mode. I was unable to accelerate, the brake and wheel locked. And then the engine light began flashing. The limp mode , non acceleration, and flashing engine light have happened twice before this instance. The first two times the pulled the P1326 knock sensor code and replaced it. Did the update, and sent me on my way saying it was fine. Now this most recent time (the 3rd time), the engine has failed. A CARFAX report says my car already had the engine replaced at 52k miles, meaning there’s 1 something internally wrong and 2 it’s still well within mileage warranty for another engine replacement. This car is extremely dangerous as it can literally stop in the middle of the highway. I went from 72 to about 15 mph in seconds, I was unable to get over or accelerate. It was terrifying. Now dealing with Hyundai - they don’t want to take fault.

Filed Apr 22, 2026 · Electrical, Engine · GA

The vehicle has a difficult time turning over when cranking, the RPMs are sticking and the car periodically shuts off at red lights. Several warning lights pop up when it won't crank and then other warnings when the car just completely shuts off at red lights. I drive the interstate in [XXX] daily for work, so with the engine stalling my safety is at risk every time I drive it. Likewise when it won't crank, my safety is at risk. I had two Hyundai recalls updated in my car in 2022, Hyundai Recall 209 which was a connecting rod bearing test and my car passed so they installed the other Hyundai Recall 966 which was software update for the knock sensor detection system to alert the driver of future issues. Those issues are now current. The software is detecting a critical failure which is why the car is shutting off - entering limp mode, or the engine is failing. On April 9th through the 11th, 2026 my vehicle was inspected by a Hyundai dealership, where a technician identified a developing engine concern and advised me to continue driving the vehicle. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jan 17, 2026 · Electrical, Engine · OK

Following the knock sensor detection system update, this car has a P1326 code that forces it into limp mode. Occurs during moderate-hard acceleration, e.g. getting on a highway. The car is limited to ≤2000 RPM and ≤ 45 mph, and rapidly decelerates to that speed if necessary. Acceleration is very limited. This occurs roughly every two weeks, despite having a brand new sensor installed by Hyundai. Hyundai has also allegedly performed cleaning on the sensor and related parts. This has been going on since November, when the recall that installed this update was performed.

Filed Nov 28, 2025 · Electrical, Engine · MD

I am writing regarding a serious incident involving negligent automotive service performed by Jiffy Lube Store #687. On October 24, 2025, I took my 2017 Hyundai Tucson to this location for a standard oil change. I trusted that the service would be completed properly and safely. However, on November 21, my vehicle’s oil lamp unexpectedly illuminated. Concerned, I returned to Jiffy Lube on November 22, where employees informed me that they had “sealed the small leak and topped [my] oil,” adding that I was entitled to two top-offs between oil changes and “should be good for two weeks.” Tragically, the very next day, November 23, the oil lamp flashed again. My vehicle then shut off while I was driving, with my children in the back seat. This was a frightening and dangerous situation for all of us. I am now left confused, stressed, and unsure of the full extent of the damage.

Filed Nov 21, 2025 · Electrical, Engine · GA

Sensors something to do with the motor and not sure where the other sensors is related to could be the motor as well. The safety was not good due to it shut off in the middle of traffic and making wraddling noise. I took the vehicle to the dealership where purchase from. They have done nothing besides fixed one thing that I know of supposed to been the surpension. But the other problems was not fixed No it has not been inspected by anyone The warning lamp come on and just blinking none stop

Filed Oct 29, 2025 · Electrical, Engine · CA

My 2017 Hyundai Tucson has completely broken down will not go into reverse had a diagnostics at Hyundai. I thought it was going to be covered because of the class action suit. My car apparently was not in the recall or the suit. I don’t understand I have the identical problem of the dual clutch transmission issue. I’ve tried to get Hyundai to do good-faith repair they refused. I’ve contacted Carmax where I purchased the vehicle. They had the car when the lawsuit was finalized I didn’t know anything about the lawsuit or the problem with the vehicle. I’ve had the car for five years it’s at 85,000 miles. I don’t know what to do.

Filed Jul 21, 2025 · Airbags, Electrical · FL

The controls (buttons) on the right side of my steering wheel progressed from slow to respond to completely unresponsive, and then the driver airbag light started coming on. At first it was intermittent, then constant. I didn't expect those two issues to be related but did come to learn it was the clock switch. According to my Hyundai dealer, this is a known issue in several other years/models of Hyundais and they have extended those warranties, "but it hasn't reached the Tucson yet". I was told that either 1 - my airbag wouldn't deploy or 2 - it would deploy randomly when I was driving the vehicle. I spent nearly $1000 in diagnostics and repairs.

Filed Jul 10, 2025 · Electrical, Engine · GA

The contact owns a 2017 Hyundai Tucson. The contact stated that while driving at various speeds, the vehicle made an abnormal clacking sound. The vehicle was taken to an independent certified mechanic, where it was diagnosed that the catalytic converter had failed and needed to be replaced. The vehicle was repaired; however, the failure persisted. The vehicle was taken back to the mechanic, where the catalytic converter repair was performed. The contact stated that after the repair, the contact noticed that the instrument panel would turn black and the infotainment system would become inoperable intermittently; however, both systems would reboot independently. Additionally, the vehicle was taken to an unknown dealer, where the air compressor was replaced due to heating system failure. The contact stated that the instrument panel failure recurred intermittently. Additionally, the contact stated that the vehicle was overheating. The check engine warning light was illuminated and the message "Engine Overheating" was displayed. The vehicle was taken back to the independent mechanic, where it was diagnosed with engine misfire. The mechanic determined that the head gasket failure had caused oil to contaminate the coolant reservoir. The vehicle was not repaired. The dealer was contacted and confirmed that the VIN was not included in a recall. The manufacturer was not notified of the failure. The failure mileage was unknown.

Filed Jul 5, 2025 · Electrical, Engine · MO

Power windows will go down by driver buttons but driver buttons will not work to make windows go back up. Engine is stalling, can smell exhaust, manifold is said to be needed to be replaced. Burns oil badly.