2025 Hyundai Santa Fe: adaptive cruise control problems

Filed Oct 30, 2026 · Acceleration, Driver assistance · CA

On three occasions while Highway Driving Assist / Smart Cruise Control was engaged, my 2025 Hyundai Santa Fe Hybrid did not slow down for the vehicle ahead and continued at its set speed. I had to brake manually to avoid a collision. Dates and conditions: UNKNOWN exact dates. All three occurred within the past several weeks. Warning lamps or messages: UNKNOWN. I did not notice a warning before the system failed to slow down. Inspection: The vehicle has not yet been inspected for this problem. I have reported it to Westlake Hyundai in Thousand Oaks, CA, and it has a service appointment scheduled. It has not been inspected by the manufacturer, police, or insurance. The vehicle also has other ongoing issues, including the brake pedal sticking at startup, two no-start events requiring roadside assistance, and intermittent electrical problems. I am concerned this is a safety defect that could cause a rear-end collision.

Filed Aug 18, 2026 · Steering · VA

Multiple occasions of the ADAS lane centering system operating unsafely. The worst one was on a gentle left-hand curve on a concrete surfaced bridge at night. The system allowed the vehicle to slowly drift to the outside of the lane. When it was fairly close to the white line, it jerked the wheel back to the left and then released the steering to my control while pointed hard into the oncoming lane. It will do similarly during the day when approaching a center turn lane on the highway. Sometimes it will decide that it should be in the turn lane, will make a rapid input, and then return control to me, now pointed at the oncoming lane. When the vehicle returns control to me, it indicates it by making the steering wheel and lines in the HUD grey, no chime, no warning icon, just green to grey and release the wheel in whatever direction it's pointing. It also sometimes slows drastically for vehicles that have exited the highway when on cruise control or applies hard braking for vehicles in the other lane while in a curve on a hill. There are no lights or malfunction warnings and the vehicle self-diagnostic says everything is operating correctly.

Filed Apr 19, 2026 · Driver assistance, Electrical · TX

Since I bought the car the forward attention warning goes off constantly. I’ve taken it to the dealership multiple times. They took off my eztag, stated it was blocking my camera. This is not the issue. Now there are 56 cars ahead of mine. This will be the 3rd time for the exact same complaint. It affects everything in the car. My cruise control doesn’t work because of this issue. If you turn the toggle back on it has more warning. Just the beeping constantly is going to cause an accident. I’ve asked Hyundai to buy it back they refuse. This is a known issue.

Filed Dec 3, 2025 · Driver assistance · TN

The adaptive cruise control does not allow the use of sunglasses to be worn while the cruise control is engaged. The cruise control will immediately shut off when sunglasses, and some prescription glasses are worn. This is a safety issue as you are not allowed to wear sunglasses on a sunny day or when the sun is low in the sky and it is below the car's sun visor. The same camera that is looking at the drivers eyes also controls other safety features and disables them when the driver is wearing their sunglasses, and some prescription glasses as well

Filed Nov 9, 2025 · Driver assistance · NE

We purchased a 2025 Hyundai Santa Fe Caligraphy Vin [XXX] in July 2025. During a road trip the following week when we got on the interstate and my wife turned on Cruise Control she began getting notifications on the front panel telling her to keep her eyes on the road and drive safely. These notifications were showing up during the entire trip (300 miles) every 2-5 minutes. We contacted the dealer and have had it in the shop five times now for them to trouble shoot and try to determine the issue. We also opened a case with Hyundai Corporate which they closed indicating they could not find a problem. I have spent multiple hours riding with my wife, reviewing the owners manual, and researching online in a attempt to resolve this issue. During driving test we have experienced a situation where the Message “Take Control of the car the system is shutting down. Shortly afterwards the Cruise Control shuts down and the driver briefly looses control of steering and acceleration. This is a very dangerous situation at 70 MPH. During my trouble shooting I feel I have narrowed down to issue to the Driver Assist System and the Forward Attention Warning system on our Hyundai. Online research (Reddit) indicates numerous other users are experiencing the same issue across multiple Hyundai models. It’s my opinion that this is a Safety issue since the driver can momentarily loose vehicle control. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 14, 2025 · Driver assistance · PA

I just purchased a 2025 Hyundai Santa Fe and the Smart Cruise Control won't work with sunglasses on. There is an Infared sensor on the steering column that has to see your eyes. Sunglasses are needed for this vehicle. If you don't wear them, the sunlight blinds you. The system will beep, display a message stating full face can't be seen, and it shuts the cruise control off and the vehicle decelerates, which is unsafe.

Filed Oct 9, 2025 · Driver assistance · MI

Wearing any kind of polarized sunglasses prevents you from seeing the Heads-Up display and will abruptly disable the adaptive cruise control. The Santa Fe forum has hundreds of complaints about this, yet Hyundai has not done anything to correct the problem. I have asked three different dealers about this problem, and they just repeat the company line (you need to find sunglasses that don't cause a problem). This situation is dangerous and unacceptable.

Filed Aug 12, 2025 · Driver assistance · IA

The attention detection system is the worst designed feature of any vehicle I have ever experienced. It constantly dings while looking directly at vehicles ahead. It is distracting and turns off by looking DOWN directly at the steering wheel. It is a safety hazard and Hyundai needs to push out a fix ASAP or allow the feature to be disabled entirely. You cannot use cruise control without it activated and the feature is a safety hazard that makes the car LESS safe.

Filed Jul 18, 2025 · Transmission · AZ

Re: 2025 Hyundai Santa Fe VIN: [XXX]  I am facing several issues that require immediate attention. Below are the unresolved concerns: Transmission Problems 1. When driving downhill with the cruise control on, the transmission produces significant vibrations and makes a lot of noise. This is unacceptable and needs to be checked and fixed, as I am very concerned about my safety.  2. When accelerating from speeds above 45 miles per hour, the RPMs exceed 5,000, but the car does not increase in speed. The transmission fails to shift properly. This has happened three times, and it is very dangerous.  3. During hot weather, the car has stalled multiple times when I accelerate. This has put me in dangerous situations when the car stalls in traffic.  Gas Mileage 4. I have observed a significant reduction in fuel efficiency during high-temperature conditions. Specifically, the gas mileage decreases by approximately 20% to 30% when driving home in the afternoon heat compared to my morning commute, even though I follow the same route.   Message sent to Hyundai.com on 7/14/2025 with supporting documents.  On July 12, 2025, I arrived at my scheduled service appointment at Earnhardt Hyundai regarding my 2025 Santa Fe. To ensure a thorough evaluation, I provided the service technician with a detailed list outlining the specific issues I have been experiencing with the vehicle (attached for your review). It is deeply concerning that Earnhardt Hyundai did not document or formally acknowledge all the complaints I submitted to the service department. (attached invoice) This lack of attention is particularly troubling in relation to the persistent issues with the dual-clutch transmission (DCT) 
 INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Mar 7, 2025 · Acceleration, Driver assistance · TX

The sensor always goes off stating my eyes aren't on the road to the point it trys to stop the vehicle in traffic. This prevents me from being able to use cruise control because the sensor is causing issues by not detecting my eyes

Filed Jan 27, 2025 · Acceleration, Driver assistance · NM

The forward attention warning (FAW) on the 2025 Hyundai Santa Fe calligraphy can not be deactivated. Correction, it can be turned off for normal driving. For instance, driving around the city or not using smart cruise control. As soon as you turn on the smart cruise control it's reactivated and can't be turned off. The FAW does not work when using prescription sunglasses / non prescription sunglasses or if the sun is hitting the inside of the cabin a certain way. The FAW constantly flashes warnings and beeps at you even though you are looking forward and keeping your eyes on the road. If you look far down the road you shift your eyes up some, and the system beeps and flashes warnings to keep your eyes on the road. On a recent 230 miles trip I did not wear my prescription sunglasses / non prescription sunglasses and the FAW system went off at least 50 plus times and I had my eyes on the road at all times. Very distracting, I then had to take my eyes off the road to see why it was beeping and telling me to keep my eyes on the road. The FAW system actually makes for a stressful and distracting drive. At this time the FAW is useless. I took the vehicle to the dealer and the FAW is not a system that can be turned off. Hyundai needs to allow the dealers to be able and deactivate the system.

Filed Dec 24, 2024 · Acceleration · WA

Hyundai Distracted Driver feature is FAULTY and VERY hazardous! If someone puts on sunglasses to drive SAFELY, the vehicle says you ARE distracted; and cuts the cruise control and starts braking on its own. VERY BAD!!! The vehicle is almost undrivable. Many others are having their dealerships buy their Hyundai Santa Fes back because they are nearly undrivable and are a general US roadway hazard, due to the way the faulty "Distracted Driver" feature kills cruise control AND actually distracts drivers constantly ... causing very unsafe driving conditions. Might have to get our dealership to buy back our brand new 2025 Santa Fe Limited (as MANY others have already done). The Distracted Driver feature actually distracts drivers constantly AND causes unsafe and hazardous driving conditions. Please ... please ... please strongly compel Hyundai to fix this A.S.A.P., by Hyundai issuing a patch to their system update that allows drivers to turn off/disable the hazardous "Distracted Driver" feature. Hyundai Community Posts: [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)