2026 Hyundai Palisade driver assistance problems

Filed Oct 11, 2026 · Acceleration, Driver assistance · FL · crash

On September 21, 2026, at approximately 9:20 AM, while attempting to turn off the engine of the parked vehicle, the engine failed to shut down as commanded. Due to severe ECM misfire and erratic anti-stall compensation, the engine surged uncontrollably and propelled the vehicle forward. The Forward Collision-Avoidance Assist (FCA) completely failed to detect the obstacle, alert the driver, or apply emergency braking, resulting in an unavoidable low-speed collision and slight front-end body damage. The following day, on September 22, 2026, at approximately 2:49 PM, the vehicle abruptly triggered a powertrain fail-safe mode in traffic, forcefully restricting speed to roughly 20 mph (limp-in mode), when my wife found it when trying to running faster from a STOP mode, to prevent catastrophic catalytic converter damage caused by persistent combustion misfires. It is impossible to be the wrong operation of my wife since limp-in mode cannot be activated during low speed running. On September 23, 2026, the vehicle was taken to an authorized Hyundai dealership to apply pending TSB 26-01-068H (Campaign 9D6). While the dealer completed the software update and reported no active DTCs remained afterward, Hyundai Motor America has flatly denied manufacturer liability for the property damage incurred directly prior to this safety remedy. Hyundai's ECM software logic flaw poses a critical safety risk involving unintended acceleration, complete shutdown failure, and active safety system non-intervention. I request the federal safety agency investigate this defect and Hyundai's refusal to remediate related incident damage.

Filed Oct 1, 2026 · Driver assistance, Electrical · FL

Vehicle purchased new in August 2026. Within 80 miles, it began experiencing a recurring electrical fault causing simultaneous warnings across the steering, braking, and driver-assistance systems (DTCs C28C586, C164286, C181486, C181483, logged via Hyundai's Bluelink diagnostic system). The fault has recurred at least 9 times between 80 and 1,121 miles despite three repair attempts (8/28/26, 9/8/26, 9/14/26), including one escalation to Hyundai's national TechLine (Case #2026091700002) referencing TSB 25-GI-016H. Each repair was declared successful, and the identical fault returned within days each time. During active occurrences, dashboard alerts have included "Check Driver Assistance System," "Check Rear Cross-Traffic Safety System," and simultaneous warnings for lane departure, forward collision, blind spot, and anti-lock braking systems. This represents a loss of reliable communication between safety-critical systems (steering assist, ABS, and driver-assistance) while driving, creating a risk of degraded steering or braking response without warning. Manufacturer has declined to repurchase or replace the vehicle.

Filed Sep 8, 2026 · Driver assistance · FL

I first brought my vehicle to the Towson MD Hyundai Service Department, near my summer home, upon receiving a warning that the front sensor was not operating. I was advised that the issue will be covered under warranty. Imagine my surprise when I was advised that it would not be covered because the service team located documentation in the vehicle's file indicating that the sensor had been damaged while the new vehicle was being transported to or delivered to the Sarasota FL dealership where we purchased it. They said this documentation specifically chronicled the damage. I reported this to Hyunai's upper mgmt, was assigned a rep who promised to contact Sarasota on my behalf and work to resolve the issue between the two dealerships. After many weeks, she reported back that Sarasota denied that this damage had occurred because the notes/documentation Towson located could no longer be found in the system. But she assured me that they would continue working with the two dealerships to get to the bottom of what had occurred and she would get it covered. It took most of the summer, many calls from the assigned representative stating she was still trying to reach the various parties involved; very confusing as I have never had trouble reaching a service member or manager- and each time made me reiterate the issue, history, and assure that no collision had taken place. Ultimately I was informed Hyundai had determined the damage is not covered under warranty because of what they characterized as external damage, likely due to collision, Of course Iam stunned. The repair will cost approximately $2,000. I want to be unequivocally clear on this point: There has been no impact or visible damage to the front bumper verified by Towson to which she told me "Impact doesn't always show. I have read online about a number of these incidents. i feel Hyundai is clearly trying to cover an ongoing issue that they don't want to address. I am happy share my correspondence with you

Filed Sep 7, 2026 · Driver assistance · FL

Adaptive cruise control controls the speed limit based on Maps or actual signs was making an error! I was in a 60 MPH area when the system would read the route number sign and mistake it for speed limit. This happened both on state route 80, and state route 70, the car would accelerate up to that speed indicated by the route sign for a few seconds and then realize somehow it was in error and drop down to legal speed. Its a surprise for the driver.

Filed Aug 18, 2026 · Driver assistance · 1,917 miles · AZ

The contact owns a 2026 Hyundai Palisade. The contact stated that while driving 75 MPH, the vehicle merged into the right lane independently, causing the contact to manually return the vehicle to the correct lane. No warning light was illuminated. Neither the dealer nor an independent mechanic was contacted or notified of the failure. The vehicle was not taken to the dealer or independent mechanic to be diagnosed. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 1,917.

Filed Jul 23, 2026 · Driver assistance · NJ

When using "Lane Keeping Assistance" the vehicle pulls slightly to the right and continues correcting itself creating a snake like pattern. This is unsettling and other vehicles that I own do not have this pattern including the same model from previous years. This feature is design for safety, however when "Lane Keeping Assistance" in operation the pulling to the right looks like you are going into the other lane then correct's itself and repeats not giving the feel of safety. I have taken it do the dealer and file a report to hyundai both parties had stated they cannot do anything without an error code. I have seen other customers complain about this issue with my make/model. Please help correct this issue. Thank you

Filed Jul 20, 2026 · Driver assistance, Seats · FL

I am reporting multiple recurring safety concerns with my 2026 Hyundai Palisade. Loss of acceleration: Under heavy throttle, the engine revs to approximately 5,000 RPM but the vehicle does not accelerate as expected. This has occurred repeatedly and appears more likely after the vehicle reaches normal operating temperature. During one incident on the highway, I needed to accelerate quickly to avoid surrounding traffic, but the vehicle did not respond as expected, creating a potential safety risk. An authorized Hyundai dealership inspected the vehicle and reset the transmission adaptive values, but the condition remains. Lane Keeping Assistance: The Lane Keeping Assistance system consistently positions the vehicle toward the left side of the lane instead of properly centering it. The issue has been reported to the dealer, but the condition remains unresolved. Power second-row seat: The power second-row captain’s chair can continue moving while folding, creating a hand-crush hazard if a person’s hand is in the path of the seat. It also interferes with proper third-row seat operation. This issue has been reported to the dealer and remains unresolved. These issues have been reported to Hyundai and remain unresolved after dealer inspections. The vehicle is available for inspection, and I have documentation and video evidence of the acceleration concern.

Filed Jul 6, 2026 · Brakes, Driver assistance · FL

Stopped at the gas pump and filled up. When I went to leave all dash lights were lit up and car wouldn’t move. Brakes were locked. I tried restarting and restarting. Brakes would lock up when I tried to move, either direction. I finally gases it enough that it screeched the tires to move it from in front of the gas pump.

Filed Jun 16, 2026 · Driver assistance · DE

It appears there is an ongoing issue with the Driver's Assistance. More specifically with automatic braking regarding forward collision. On 4 separate occasions, the vehicle has gone haywire with several alarms and icons going off at once and then sudden braking in the middle of the road before I have even realized what is going on. The issue is the car decided it was time to slam on the brakes right in the middle of the road while I was driving so it was very jarring. I have brought the vehicle to the dealership once and they kept it for 2 days to inspect the problem and could "not reproduce the problem". So they returned the vehicle to me. However, the issue occurred 3 more times after they returned it to me within 3 wks. So, I am dropping it off again for them to keep until they locate the problem now that I believe I have narrowed it down to the Driver's Assistance and forward collision issue. When I disable the driver's assistance/forward collision toggle, there "appears" to solve the issue. I have not had the same problem when that specific toggle is off as of yet. There have been no inspections from a manufacturer rep, police or insurance rep. There were a ton of warning lamps at one time just prior to the automatic braking, some regarding power train, battery, and several others. I have photos.

Filed Apr 2, 2026 · Driver assistance, Electrical · FL

2026 Hyundai Palisade Calligraphy, VIN [XXX] , purchased March 6, 2026 with under 2,200 miles at time of incident. SAFETY INCIDENT: While operating under adaptive cruise control at highway speed, the vehicle experienced sudden unintended acceleration followed by severely delayed braking response. At least three trailing vehicles were forced into emergency evasive action to avoid a multi-vehicle collision. Family members were present. This event represents a direct and immediate threat to the safety of vehicle occupants and the public. The root cause has not been definitively identified or resolved. The authorized dealership confirmed CAN-Bus resistance irregularities — 160 ohms versus the designed 120-ohm specification — governing acceleration, braking, and all driver assist systems. Prior symptoms included flickering interior lighting. An initial module replacement failed. Repair has escalated to full wiring harness replacement with no parts availability and no confirmed timeline. The safety event remains undiagnosed and unresolved. The vehicle carries three simultaneous active safety recalls — 293, 296, and 297 — all involving electrical and wiring systems on the Calligraphy trim exclusively. None have permanent remedies. The vehicle has been in dealer custody since March 21, 2026 and is available for inspection. Hyundai Motor America active case — No. XXX. This vehicle is not safe to operate. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)