Hyundai Tucson won't start problems

Filed Nov 4, 2026 · Engine, Fuel system · FL

While driving down the highway, the check engine light started to flash. Once the car was turned off and back on again, it shook violently. It was hard to keep it in the lane and I was worried it would cause an accident. It was driven off the highway while constantly shaking. Once it sat off for roughly 30 minutes, it would turn on, but wouldn't turn over and drive. It was towed to a dealership where it was diagnosed, though I was never given anything past a verbal "it stopped compressing". It turns on and over, but makes a grinding noise. It will die and turn off the engine after roughly 45 minutes. This had never happened before. *I've been told a few different things by people who hear about the problem, but I've never received a real diagnosis by the Hyundai dealership it is located at. It has always had a oil consumption problem, adding roughly one quart of oil every 800-1000 miles. It has had oil changes every 5,000 miles. It also had a hard time when cold-started accelerating, but would work fine once heated up. It is available for inspection upon request.

Filed Oct 10, 2026 · Acceleration, Electrical · NV

loss of info system loss of all dash lights when I turn the engine off most of the time I loose all electrical systems (will not start for at least 15 minutes) if doors lock I can only unlock the drivers door with the auxiliary key. Has tried to shift in to park while driving (one time) Lost all power (engine and steering while crossing a highway (once only)

Filed Sep 29, 2026 · Engine · NM

Vehicle was operating normally and when arriving at a gas station to refuel the vehicle would not start after turning off. Vehicle was towed to the dealership (Larry Miller Hyundai Albuquerque, and a seized motor was described as the discrepancy. No further maintenance has been performed.

Filed Jul 21, 2026 · Engine, Transmission · IN

While driving on a US highway, the check engine light illuminated and the vehicle lost the ability to start/run normally, requiring the vehicle to be pulled off the road and towed to an authorized Hyundai dealership. Dealer diagnostic testing found the engine failed a bearing/performance test, consistent with connecting rod bearing wear. This failure mode — Check Engine light, DTC P1326, abnormal noise, or a no-crank/no-start condition caused by connecting rod bearing wear — is described in the manufacturer's own internal dealer service bulletin covering an engine warranty extension program for multiple engine families (Theta II MPI and Nu GDI engines) across several model years and vehicle lines. That bulletin acknowledges the failure as a known condition and extends coverage to 15 years/150,000 miles for original and subsequent owners. The failure occurred suddenly and without warning while the vehicle was in active use on a highway, creating a stall/loss-of-power hazard in moving traffic — the vehicle could not be restarted at the roadside. The dealership's own multi-point inspection performed shortly after intake confirmed engine fluid levels and oil grade were within normal range, indicating the failure was not attributable to a lack of lubrication at the time of failure. Despite this, the manufacturer denied warranty coverage for the repair, citing an inability to produce maintenance receipts for a prior period, even though the dealership's own inspection findings do not support a maintenance-related cause. This report is submitted because of the safety hazard posed by unwarned loss of engine power/starting capability while driving, and because this failure pattern appears consistent with a defect the manufacturer has already acknowledged for closely related engine platforms, raising the question of whether additional vehicles with this engine design should be included in that existing warranty/defect campaign.

Filed Jun 10, 2026 · Engine · MA

The engine (connecting rod bearings in the 2.0L Nu GDI engine) failed. The vehicle entered limp mode with DTC P1326, then died on the road and the engine seized completely (will not turn by hand when attempted; only clicks on starter). It is currently at First Hyundai dealer in [XXX], under Repair Order #XXXand available for inspection. The vehicle suddenly lost power and died while driving on the road. This created a significant risk of an accident or being stranded in traffic. I was on a busy highway and almost got hit twice. There is also a known fire risk associated with this exact defect (oil leaking onto hot engine components), as stated in Recall 209 (the federal safety agency 21V727). The vehicle was towed to First Hyundai. They have documented the no-start/seized condition on Repair Order #XXX. A prior independent scanner reading showed P1326 before the code was cleared. The dealer has not performed the full diagnostic inspection (scheduled around June 11). Hyundai Corporate (Claim #XXX) has been notified but has not responded after multiple escalation emails. The vehicle first went into limp mode ("Engine Protection Mode") with DTC P1326 on the scanner. Shortly after, the engine died completely and would not restart. This occurred after Recall 209 (bearing/KSDS campaign) was completed on XXX. Additional Details: This is a known issue with premature connecting rod bearing wear. The dealer is refusing to provide a loaner/rental upon drop-off, which contradicts TSB 22-01-023H (Dealer Best Practices for P1326 vehicles). The vehicle has been inoperable since 6/4 ..with no resolution. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

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 28, 2026 · Engine · MI

My 2018 Hyundai Tucson experienced repeated no-start conditions. The vehicle was initially diagnosed by Randy Wise Hyundai in Flint, Michigan, and I paid approximately $776 for tune-up services that did not resolve the issue. Shortly afterward, the vehicle continued to fail to start. The dealership later determined the starter had failed and provided an estimate of approximately $985 for replacement. Hyundai Motor America denied goodwill assistance and reimbursement for the prior misdiagnosed repair and stated the starter replacement is customer-pay. The vehicle’s inability to start caused loss of reliable transportation and safety concerns due to being stranded. I am submitting this complaint to document starter failure and potential diagnostic issues affecting vehicle safety.

Filed Nov 12, 2025 · Engine · IA

Driving on interstate for approx 30min and the car stopped accelerating. We safely merged off to the side and the car completely shut off. The car would not start. We put oil in and it started up by engine light was on. We got vehicle towed 1hr back into town. We are lucky no cars were behind us to cause an accident. We are also lucky engine did not catch on fire. This happened completely out of the blue. I get my vehicle serviced regularly and serviced at Hyundai dealerships for major repairs. The engine failed us and is available for inspection. Our claim was denied by Hyundai due to my mileage being 10k over the warranty. However they installed the faulty engine so regardless of mileage this needs to be resolved.

Filed Jul 21, 2025 · Fuel system · CA

I purchased a brand new fuel pump on 2-28-24 after car died on freeway. Mission Hills Hyundai diagnosed as pump not turning on, so recommended replacing fuel pump assembly. On [XXX] car wouldn’t start, so took vehicle in and the next day it was determined as faulty starter. Car was picked up 7-3-25 after buying a new starter, but car would not start again the next day. The car was actually misdiagnosed and the ruling was tank fuel pump had an intermittent short circuit. I’ve driven on the fuel pump I purchased on 2-28-24 for about a year in a half. It only lasted 40,000 miles. Fuel pumps last 100,000 to 200,000 miles. I’ve driven other vehicles going over 100,000 miles on the same fuel pump. How did this fuel pump go out so quick? Was it installed right? Was it bad wiring? Was it a defective part? Thankfully the fuel pump went out when I wasn’t driving. This is a major safety issue and Lithia, who is the parent company of Mission Hills Hyundai, should be looked into. Also the misdiagnosis from the technician should be in question to. Integrity is also an issue here, so how can I feel safe if I want to to continue getting my car serviced here. Yes they gave me a new fuel pump with no charge, but still had to pay for a starter I didn’t need. Basically I spent $3000 for a part that went out on my vehicle in over a year. Just like how Ford has a recent recall of fuel pumps, Hyundai should be checked into this issue also. I will attach invoices including a service for my fuel system cleaning. I thought all this work I got done would prevent a major failure on a vital vehicle component. Thank you, Hope to hear from you INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jun 30, 2025 · Engine · MA

Engine has been burning through oil. Started the Engine oil consumption test at one dealership. That dealership has now closed leaving me to go to another dealership. They want me to start the process over again. I have had two oil changes, failed the second test and was scheduled to bring my car back for the next step in the diagnostic process. Not only do they want me to pay out of pocket again for an oil change but my car is driving worse. It didn't start the other day and it drives horribly. The safety concern I have is that the engine will seize while driving, causing an accident.