2019 Hyundai Santa Fe

The contact owns a 2019 Hyundai Santa Fe. The contact stated while at a red light, the vehicle stalled. The failure had occurred on several occasions. No warning light was illuminated. The vehicle was taken back to the residence. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 80,000.

The contact owns a 2019 Hyundai Santa Fe. The contact stated that while driving at various speeds, the vehicle lost motive power while depressing the accelerator pedal, with the check engine warning light illuminated. The vehicle was taken to a dealer and the turbo was replaced. The contact stated that months later, the vehicle hesitated and jerked while depressing the accelerator pedal with the check engine warning light illuminated. The vehicle was taken back to the dealer where a part on the transmission was replaced; however, the failure returned, and the check engine warning light illuminated. The vehicle was taken back to the dealer and the contact was informed that the transmission needed to be replaced. The contact took the vehicle to an independent mechanic and had the transmission replaced. The contact stated that months later, the vehicle began to sputter with an abnormal knocking sound coming from the vehicle. The check engine warning light returned, and the vehicle was taken to the nearest dealer. The vehicle was diagnosed with engine failure. The vehicle was not repaired and remained with the dealer. The manufacturer was not notified of the failure. The failure mileage was approximately 87,000.

2019 Santa Fe, this vehicle was serviced by Hyundai three times for a "Knock Sensor" notification. 12/3/2019: ECM manufacturers recall 14,242 miles 7/13/2021: Knock Sensor hardware notification - 38,615 miles 12/15/2024 repaired 1/7/2025: Knock Sensor hardware notification – 79,882 miles Panel indicating motor issues, vehicle becomes unable to accelerate above 60 mph. We have documented communications between dealers and Hyundia corporate with case#

For the past month my car has been stalling in traffic. The car stalls and then turns back on a few seconds later. It also stalls when I am accelerating after stopping for a red light. This situation is very dangerous and it means that I cannot drive my car expecting to be safe at all. It seems like the motor and the transmission are involved which makes the stalling very dangerous as those are major systems.

My Santa Fe developed difficulty starting beginning the afternoon of February 18. While waiting in stop-and-go traffic to park for a sporting event, the ISG (idle stop-and-go) activated at least 40 times. After at least the 40th time, the Santa Fe did not turn back on. After about 10 minutes, I was able to start it. This happened while I was stuck in very heavy traffic exiting the freeway. After that, it would always take multiple attempts to start the car even though the battery had more than enough power to turn over the starter. After a couple of days of dealing with this, I took the Santa Fe to my local Hyundai dealer. After diagnostics, they were able to reproduce the problem and they determined that the starter had developed an intermittent short which was likely caused by the multiple ISG activations on Sunday, 2/18/2024. While they verbally agreed with me that repeated activation of the ISG was the likely cause of the starter short, they wouldn't put that in the written service statement. At the time of this problem, my Santa Fe was 1,887 miles past the 5-year 60,000 mile bumper-to-bumper warranty. I had purchased the Santa Fe a few months ago as certified pre-owned with about 58,500 miles on it so, even though being the 2nd owner, I retained the remainder of the bumper-to-bumper warranty as well as the 10 year 100,000 engine/drivetrain/transmission warranty. Oddly enough the starter, which is attached to the engine is categorized as part of the car's electrical system instead of as part of the engine so the starter replacement wasn't covered. I appealed to the dealer for a discount of some kind. They declined. They claimed to have called Hyundai USA which also supposedly said no to covering the cost of the new starter. A quick Google search for this problem revealed other owners of Santa Fes with the ISG have had the same exact issue.

There is a system in the car that starts and stops engine, supposedly only at lights to save on fuel. Mine has stopped in the middle of a highway on my way up to Tahoe. Luckily I had just left light and only driven enough to reach the speed of about 10 miles per hour so the cars behind me were able to stop and not hit me. I had to completely turn the car off, put in park and restart car to get it to operate. It has stalled out like a stick shift would if not handled properly, but it is an automatic transmission, on numerous times. Sometimes this will cause the vehicle to completely shut down and sometime it will sputter for a few minutes and then slowly pick speed up and stop. The IGS button to turn this feature on and off when you get into the vehicle will sometimes stay off (not supposed to) and sometimes turn back off as it is supposed to each time the vehicle is turned on or off. It doesn't register as a recall, but I have done my research and saw that at one point you guys had done an investigation into this exact problem with my car. It doesn't show up on diagnostic and it doesnt do this every time I drive. So I have no way to show mechanics the isues. But this puts my life and anyone in my cars lives at risk. Not to mention any cars behind me if this happens on the highway again. I dont know what to do :( Can you please help me?