Hyundai Santa Fe lane assist problems

Filed Nov 6, 2026 · Driver assistance · IN

Since delivery in May 2024, the driver-assistance systems on my 2024 Santa Fe malfunction in rain and snow at highway speeds, around 65 mph. The cameras report being blocked and a cascade of alerts goes off: warnings to put my hands on the wheel when they already are, "take a break" driver-attention warnings, and "conditions not met" messages. Smart cruise control shuts off without warning, and lane assist loses the lines. About two months ago (around September 2026), driving in pouring rain, the car flashed a message that it was shutting down while I was on the road. The date entered is approximate. The driver-attention camera also gives constant false warnings in normal driving: when wearing sunglasses, with an arm resting on top of the steering wheel, or with dust on the camera. Both drivers in our household experience this. Sudden alarms and systems shutting off at highway speed in bad weather are distracting and dangerous. I reported this in writing to the dealer in February 2025, saying the safety features had nearly caused numerous accidents, especially in bad weather. The dealer offered to show me how to turn the features off, but that never happened, and nothing has been repaired. My daughters were usually in the car when these events happened.

Filed Oct 6, 2026 · Driver assistance, Electrical · CA

Multiple warnings flashing across dashboard regarding lane assist and emergency stopping. The Auto Hold came on by itself and turned orange. The emergency parking brake came on and stayed on. The warnings kept dinging every 30 seconds while driving and lit up every icon on the dashboard. Once parked I turned off lane assist, but it continued to trigger warnings. Lights flickered in park and with engine turned off. There is a clear malfunction going on somewhere.

Filed Sep 7, 2026 · Driver assistance · TX

Vehicle on initial start up shows no issue. Driving for a short distance or stationary for a short time. Vehicle instrument panel will show a fault of Forward safety system. Errors on Lane keeping assist, High beam assist, and Driver attention warning. Smart camera module will be hot to the touch causing failure of Front view camera and Front Radar Module.

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 Jun 14, 2026 · Driver assistance, Electrical · VA

Vehicle experiences severe, intermittent, un-commanded steering inputs from the Lane Keeping Assist (LKA) system at highway speeds (55-70 MPH). The steering wheel violently jerks toward adjacent traffic lanes/shoulders without operator input, lane drift, or warning, requiring immediate high-force manual intervention to overpower mechanical torque and prevent a collision or roadway departure. Chronology of manufacturer notice: - Oct 2024: Initial consumer dispute logs flagged steering safety concerns and unresolved campaign items. - Dec 2024: Opened Corporate Case 24164934, formally alerting consumer affairs to dangerous steering wheel jerking. - Jan 2025: Presented to an authorized dealer; an OTA software update was deployed, but intermittent tracking failures persisted, including failure to recognize lanes at night. - June 2026: Under Case 42680760, the system failed acutely on the interstate, jerking the vehicle out of painted lanes. The malfunction originates in the LKA steering control module and camera hardware, which are intact and available for inspection. Dealerships have not replicated the defect during brief diagnostic windows due to its intermittent nature. The manufacturer has deflected these notifications and refused a forensic diagnostic sweep or mechanical remediation. Instead, case managers attempted to close the file by offering partial financial goodwill for an unrelated cosmetic paint delamination defect on the same vehicle. No warning lamps or error messages precede these events; the system executes aggressive mechanical intervention with zero notice. This system error bypasses driver override thresholds, conflicting with vehicle crash avoidance frameworks. Because the computer fails to log diagnostic trouble codes (DTCs) during these steering drops, the manufacturer exploits this data vacuum to deny structural remediation, creating severe multi-vehicle side-impact and rollover risks.

Filed Jun 4, 2026 · Electrical, Engine · NJ

Beginning on 04/17/2026, my vehicle began displaying multiple safety-related dashboard warnings simultaneously, accompanied by audible alerts. The warnings included the Forward Collision Safety System, Blind-Spot Monitoring, Electronic Parking Brake (EPB), Stability and Traction Control, Lane Keep Assist, and AUTO HOLD — all activating at the same time. These warnings reappeared on several occasions and were photographed with date and location data embedded in each image. My vehicle was brought to Burlington Hyundai dealership, where a repair order was opened and a loaner was provided. The car was returned without the issue being fixed. Within days, the same warnings reappeared and the situation worsened. On multiple occasions, the engine shut off completely and the transmission shifted into neutral on its own while my vehicle was being driven at approximately 20 to 40 mph. On at least one occasion, the parking brake engaged automatically without any input from the driver. A dashboard photo clearly documents the message "Engine Off! Shift to N, then start engine." These failures are a serious danger to everyone on the road. When the engine shuts off while driving, normal steering and braking ability is lost. When the parking brake engaged on its own, the car stopped abruptly with no warning. Any one of these incidents could have caused a serious accident or injury. My vehicle was returned to the dealership for a second repair visit and a second loaner was provided. The dealership confirmed via text that the car was still in the shop but never followed up with a diagnosis or timeline. When the dealership was called directly, no update was provided. As of 06/04/2026, my vehicle has been at the dealership for at least 30 days across two visits — 11 days for the first and at least 19 days for the second — with no confirmed root cause, no completed repair, and no clear communication.

Filed Feb 7, 2026 · Brakes, Electrical · MD

-I had just exited from the highway and was driving into my town. While doing so, I had both hands on the steering wheel and suddenly the car started beeping and flashing warnings/ alerts indicating that my hands were not on the steering wheel, which they were. Within seconds the car began to deaccelerate and pull me off the road to my right hand side. I initially had no control over the vehicle. Then again- without explanation it began to register hands on the steering wheel and I was able to resume control of the vehicle. I believe the lane assist feature was on at the time. It all happened very quickly. Had I still been on the highway as I was moments before, there was enough traffic that I would have been pulled into another vehicle or caused an accident if people saw me suddenly rapidly deaccelerating/braking in front of them because they would have no warning and a very tiny amount of time to react. Then, in an other instance that followed shortly thereafter, my boyfriend was driving with one of the lane assist on. While driving, the weather changed and it began snowing and freezing rain that was freezing when it hit the windshield. The lane assist began to have trouble seeing the lines on the road since the snow and ice were obscuring them somewhat. It began to beep and gently correct the car- which was not appropriate in this case (we understand that the road conditions were beyond its abilities to safely discern things accurately). My boyfriend who had two hands on the wheel trying to carefully navigate this sudden burst of weather so at not to slide. He tried turning it off, but it wasn't turning off, and couldn't troubleshoot it without taking his hands off the wheel. He instructed me to turn it off through the settings menu in the infotainment system, which seemed to disable it. Prior to these dangerous problems, I had experienced some seemingly sensor- related malfunctions with the tire pressure monitoring system. I'm out of room to write more.

Filed Jul 28, 2025 · Driver assistance, Electrical · MA

*Problem Parts:I only could check 1 box- should be Brakes and Steering too *ADAS: Lane Keeping Assistance too Over the course of two days, my 2020 Hyundai Santa Fe experienced a serious electrical and safety system failure. It started with the blind spot monitoring lights flickering in the side mirrors and warnings for Forward Collision Avoidance (disabled), ABS, Electronic Stability Control, Downhill Brake Control, Parking Brake & Brake Fluid (blinking red). The rearview camera failed and the screen remained on the radio display when in reverse. The Lane Keeping Assist Indicator shifted from white/green to orange. The next morning, I had trouble opening the vehicle with the key fob. Auto Hold, Master Warning, Forward Collision, ESC, and Downhill Brake Control lights were now steadily on. The MPH numbers on the dash were blurred, and a message appeared saying “Put in P” even though the vehicle was already parked. The accessories light came on, but the engine would not start. Interior lights continued to work. I had to manually open the car and start it by pressing the fob to the button. While trying to exit a parking garage (where a tow truck couldn’t reach me), more warnings appeared: AWD, Low Tire Pressure, Malfunction Indicator (not engine), and Power Steering. I felt tightness in the wheel and had to pull over. The temp and gas gauges dropped to zero along with the RPMs. I have a newer car battery and recently replaced fob batteries, so this was not a simple battery failure. I’ve reported the issue to Hyundai Consumer Affairs. No recall appears under my VIN, despite similar failures being widely reported in this model. I’m a single parent who typically drives with two young children, including one with serious medical needs. I rely heavily on this vehicle for medical travel. The vehicle has since been towed to a Hyundai dealership for diagnostics. This is a serious safety concern and could have led to a loss of control or failure in an emergency situation

Filed May 28, 2025 · Acceleration, Driver assistance · WI

Frequent intermittent dash warning lights, no speed indicated, no tach indicated, cycles through warnings of safety systems malfunctioning. No lane departure, no adaptive cruise, no cruise, no forward collision warning, no blind spot warning. The disabling of these systems puts all drivers at risk. Dealership replaced front camera and windshield to fix this issue. Not fixed, continues to alarm at random times while driving.

Filed Mar 20, 2025 · Airbags, Driver assistance · TN · crash · 1 injury

I had adaptive cruise control on and debris hit my windshield and I went into the rumble strip and eventually into the guard rail where the car essentially pingponged from there until it eventually stopped when the metal hit the front. It appears the emergency brake did not activate and the lane keep did not activate. My air bags did not deploy.