2023 Hyundai Santa Fe: false forward collision warnings

Filed Sep 3, 2026 · Brakes, Driver assistance · MN

Collision warning sensor alarm randomly comes on my dash and my car slams on the breaks. Very dangerous, I’m scared to drive down the highway going 60mph. 80,109 miles 2023 Hyundai Santa Fe. I have not brought it in to a Hyundai dealership because they want a diagnosis fee and everything else. Hyundai should fix it. This alarm has happened several times than it will go away and come on like 3 times in a row, usually daily when I use the car

Filed May 11, 2026 · Driver assistance · GA

While driving on the interstate, while using cruise control, my vehicle braked and decelerated, uncontrollably. The collision alert alarm went off. I forced the vehicle to accelerate and it stopped the braking and the collision alarm ceased. I took the car to the dealer and they spend the day checking it over. They said they couldn’t get the same reaction I reported, but reset the cruise control. On my way back home on, again on the interstate, and with the cruise control activated, it again had the same failures. I called the dealer and told them. They asked if I had recently mounted any new equipment on the windshield. I said I had Velcro attached and EZPASS toll reader. They asked me to remove it, because might be interfering with the cruise sensor. After I removed it, and while continuing on the interstate, with cruise activated, it again repeated the same failures. The dealer arranged to have my vehicle towed to their shop.

Filed Feb 1, 2026 · CT

2023 Hyundai Santa Fe Calligraphy repeated horn failures since purchasing vehicle new. Will be having 5th and 6th horns replaced with no effective remedy as vehicle has less than 11K miles on it and this urgently safety failure needs to be corrected. There is no warning of the horn failure until you need them to prevent an emergency/collision warning.

Filed Sep 2, 2025 · Brakes, Driver assistance · TN

I was travelling at 50mph a car pulled in front of me and stopped unexpetedly. I braked hard. My car began to slow, but the brake pedal went to the floor and did not slow, AFter a few seconds, the brake pedal came up from the floor and braking was resumed. I held the pedal to the floor the whole time trying to stop. It was as though the braking system failed and recovered. There was no pulsing felt on the brake pedal typical of ABS working. After my car resumed braking thte collision avoidance system took over and the car stopped just inches from the stopped car in front of me. I had just taken the car in for dealer service at 24,200 and everything was supposedly checked out as required by maintenance. I have contacted Hyundai but have not gotten a response yet.

Filed Sep 20, 2024 · Driver assistance · CO

The forward collision warning system engages and slows the car, often very abruptly, when on the highway and only when cruise control is on. It happens after we have been on the highway for a few hours, thus the dealer cannot reproduce the incident. It happens a few times on every road trip and is very disturbing when there are no other vehicles or obstacles in the road or nearby. We have reported this to the dealer several times and they can find nothing wrong. I provided a photo to the dealer of the dashboard showing the cruise control on, the forward collision system DISENGAGED, and the forward collision warning activated. Dealer states they have recalibrated the system but can replace no parts unless a part is found to be faulty. The latest suggestion yesterday from the dealer was to "get out" of the car before the issue gets worse.

Filed Nov 29, 2023 · Driver assistance · 1,000 miles · NM

The contact owns a 2023 Hyundai Santa Fe. The contact stated while driving at various speeds, the Forward Collision Avoidance system erroneously activated, causing the braking system to activate and the vehicle to veer to the left. The contact stated that the failure was intermittent. The vehicle was taken to the local dealer on several occasions due to the failure however, a cause for the failure was not determined. The vehicle was not repaired. The manufacturer was notified of the failure, but no assistance was offered. The failure mileage was 1,000.

Filed Nov 2, 2023 · Driver assistance · SC

When traveling along the front collision warning system is triggered even though nothing is around the vehicle. The car remains running, but there is no response from the gas pedal. I have to coast to the side if possible or stop and turn on flashers (very dangerous on interstate highway). Once safely stopped, turning off the car and then starting again reboots the system and it runs fine until it happens again randomly. The check engine light stays on for a day, but does not light up the next morning. The dealership does diagnostics, but nothing shows up as wrong. It happens so fast there is no way to take a picture or video before the warning disappears. So far I have been lucky as this has happened at least 6 times. It is dangerous and I am terrified someone will not see flashers and run into me at highway speeds.

Filed Aug 16, 2023 · Driver assistance · NY

The front collision warning/assistance system on this vehicle does not appear to be working. The dealer claims that it is working. It seems that the protocol for testing for proper function is flawed and no one is tacking ownership of this issue. They are saying that in order to test the system a near collision must be imminent and to simulate this puts the technician at risk of injury (understandable); Nevertheless, I have been in situations where I should have at least received a warning and there was none. On a test drive by the service manager with me in the vehicle the front collision assistance was verified on and active. The cruise control function was tested and worked to adjust the speed of the vehicle appropriately which tells me that assistance is available. It appears that the either the collision sensor is not recognizing collision danger or the danger message is not getting to the warning trigger and possibly the assistance trigger. This situation should be reported to the appropriate department a Hyundai for review.

Filed Sep 3, 2022 · Driver assistance · CT

Forward collision warning system engaged unexpectedly, braked hard to the point of smelling burnt tires. No collision imminent. Normal driving conditions. On a second occasion, stopped at a traffic light, the vehicle suddenly warned of foward parking collision. Front camera engaged and yellow warning showed