Hyundai Santa Cruz check engine light comes on

Filed Nov 5, 2026 · Engine, Transmission · OH

Vehicle intermittently drops into a “Limp Mode” while driving. Speed becomes restricted at 20 mph and engine RPM locks at 2000 RPM. Cannot accelerate when pressing on gas pedal. No engine lights come on when this occurs. Turning ignition off and restarting temporarily resets the computer and clears speed cap. Has happened 4 times since purchased. Has strong coolant smell and occasionally rotten egg smell. This is a safety hazard! Dealership has offered no solution other than if it happens again to pull over, call tow truck, leave car running and get it to them. Opened complaint with corporate. No help. I am afraid to drive my car. This could cause a major accident and harm myself or others. Asked dealership if they could contact an engineer and was told no.

Filed Sep 27, 2026 · Driver assistance, Electrical · NH

I have had one Transmission and the tow hitch wiring harness replaced once from recalls. The tow hitch wiring harness is failing and all the warning lights are failing. The transmission is slipping upon takeoff and will rev at elevated RMS on the highway at times. When in reverse it will still move forward at times and on a hill it rolls back. The breaks have slammed on (for no reason) a couple of times while on the highway. It has also lost power. No check engine lights are on at this time. The warning lights for wiring harness are on at all times. I had it looked at last week and I had to pay $400.00 but they never drove it and said the wiring harness is no longer their responsibility.

Filed Sep 9, 2026 · Transmission · LA

In approximately late 2024, at just under 30,000 miles, the vehicle lost motive power while driving on the interstate. Multiple warning lights illuminated and the vehicle lost drive shortly afterward, leaving me unable to accelerate in traffic. The vehicle was then serviced under Recall 236 (the federal safety agency 22V‑746) for the 8-speed dual-clutch transmission high-pressure oil pump. The remedy performed was a transmission control unit software update only; the transmission was not replaced. I do not have the exact dates and am reporting these as approximate. The vehicle now has approximately 99,700 miles. It has developed hesitation and dragging on drive-off within the first half mile of every trip and at low speed in town, resolving once the transmission is warm, with no check engine light or warning lamp. The selling dealer had the vehicle approximately 35 days across two repair orders without diagnosing the condition. The repairs performed were a cylinder 3 spark plug/oil repair and dropping and cleaning the fuel tank, neither of which resolved the complaint. I have run non-ethanol fuel exclusively since the vehicle was returned and the condition is unchanged. I am taking the vehicle to a different Hyundai dealer and have opened a case with Hyundai. I am filing this report because the software-only remedy may not be adequate for this transmission. Roughly two years and 70,000 miles after that repair, the same transmission is again showing drivability problems, and other owners may experience the same loss of power.

Filed Jul 10, 2026 · Engine, Fuel system · NC

October 2025 while driving the vehicle at highway speeds, vehicle started bucking, losing power and then stalled. The check engine light did not come on. I was able to get off the side of the road and had it towed to the dealer. Dealer found injectors to be leaking and replaced all 4 GDI fuel injectors-mileage was 29,598. On July 1, 2026, again the same issue while driving the vehicle at highway speeds, it started bucking, losing power and stalling when slowed. This time the check engine light came on. Again, it was undrivable and had to be towed to the dealer. Dealer found after 15,000 miles, some of the new injectors failed and were leaking and all 4 GDI injectors were replaced again-mileage 44,492. Both times there was no warning signs that the fuel injectors were about to fail. No other tests were performed on the engine to find out why the fuel injectors are repeatedly failing. I have filed a report with Hyundai National Consumer Affairs because the vehicle will be out of warranty by the end of 2026, and the underlying issue has not been investigated nor resolved. I am concerned that once vehicle is out of warranty, a major issue with the engine will be found that caused repeated failure of the fuel injectors. I did request an extension of the warranty, but was told that normally doesn't happen.

Filed Jul 10, 2026 · Engine · FL

driving/pulling on interstate speed only went to 20 miles per hour, no more. Pulled off and turned truck off, waited and restarted. all fine. No warning was given. Short time later engine light came on. Called and got appointment at dealers.

Filed Jun 6, 2026 · Transmission · FL

I was traveling southbound on XXX from [XXX] to [XXX] While traveling in this major highway, the vehicle shunted forward and it felt like something hit us from behind. In reality, a transmission issue flared up on the dashboard along with a "Check Engine" light. Vehicle was left at the dealership. Blue Link (the automatic car system) detected this issue at 12:48 P.M. I was driving on a highway with other motorists when I had this issue. Only 3k miles! Brand new 2026 Hyundai Santa Cruz. Thank God the person behind me was paying attention or there would have been a crash! INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed May 7, 2026 · Engine · 7,738 miles · IL · fire

The contact owned a 2025 Hyundai Santa Cruz. The contact stated that while driving at an undisclosed speed, a loud popping noise was suddenly heard coming from the engine compartment with no warning lights illuminated. The contact stated that immediately following the failure, the power steering and brakes became inoperable, making it difficult to maintain control of the vehicle. The contact also noticed smoke coming from the engine compartment and was able to forcefully maneuver the vehicle to the side of the roadway. Shortly thereafter, the front of the vehicle near the engine compartment caught fire. After the vehicle was pulled over, the check engine warning light and low oil warning light illuminated. The local fire department responded to the scene and extinguished the fire. The cause of the fire had not yet been determined. The vehicle was extensively damaged and deemed destroyed. No injuries were sustained and no medical attention was required; however, the contact stated that a cough was suffered due to inhalation of smoke and fumes from the fire. A police report was filed. The vehicle was towed to the dealer but was not diagnosed or repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 7,738.

Filed Mar 26, 2026 · Electrical, Engine · CO

"The 8-speed Dual Clutch Transmission and engine (Cylinder 4) failed on my 2022 Hyundai Santa Cruz SEL Premium AWD with 37,780 miles. Both components are available for inspection upon request. While merging onto the highway in Sport Mode, the vehicle experienced violent shuddering and noise so severe I believed I had multiple flat tires simultaneously — specifically both front and rear passenger side tires. I immediately activated hazard lights and exited the highway. I was unable to safely operate the vehicle. Other drivers on the highway were also put at risk by my sudden need to exit. The dealer has NOT been able to reproduce or confirm the transmission issue despite multiple documented visits over the past year. However, AutoZone confirmed diagnostic code P0304 Cylinder 4 Misfire Detected on March 19, 2026 via OBD-II scan. The vehicle has been inspected multiple times by the Hyundai dealership over the past year. Hyundai Motor America has an open case on this vehicle and has escalated it to their buyback department. The Check Engine Light illuminated during the highway incident then self-cleared. Transmission slipping, shuddering at low speeds, high RPMs at low vehicle speeds, and failure to shift properly have been reported to the dealer for over one year. This vehicle contains the identical DCT transmission covered under Hyundai Recall 236 but my VIN was excluded despite identical symptoms. Backup camera has also failed twice — a federally mandated safety device."

Filed Nov 4, 2025 · Engine, Transmission · 63,000 miles · CO

The contact owns a 2022 Hyundai Cruz. The contact stated that while driving 70 MPH, the vehicle lost motive power but was unable to accelerate above 30 MPH. The contact was able to pull over to the shoulder of the roadway, where the failure persisted. The check engine warning light was illuminated. The vehicle was towed to the dealer, who diagnosed a failure with the transmission. The contact was informed that the transmission needed to be replaced. The vehicle was not repaired. After investigating the failure, the contact related the failure to the federal safety agency Campaign Number: 22V760000 (Power Train); the VIN was included, but the vehicle was already repaired in 2022. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the federal safety agency Hotline for assistance. The failure mileage was 63,000.

Filed Aug 11, 2025 · Engine, Fuel system · CA

Vehicle began running roughly. CEL came on. Began to misfire. Limped it off the FWY under limited power. Had vehicle towed to dealership. Was diagnosed as having bad fuel injectors. Was told by service writer that Hyundai Santa Cruz trucks have been experiencing a lot of injector failures. Looking at the various Hyundai Santa Cruz forums, it appears that this has been a very common issue and has occurred in 2022 through 2025 model year vehicles