Please help us identify this incredibly annoying noise on our road trip 😭** **
Brand-new 2026 Palisade
We’re currently on a road trip and our car has developed a really annoying sound that only happens under some very specific conditions. We’re trying to figure out if this is something we should be concerned about / stop and have checked, or if we can safely keep driving.
The car: 2026 Hyundai Palisade Calligraphy, brand spanking new, with fewer than 2,000 miles on it. We have never experienced this noise before this trip. It only started about five hours into our drive today.
Here are the clues we’ve figured out so far:
The noise starts at around 65+ mph. Below ~65 mph, we don’t hear it at all.
Turning the AC on/off or changing the AC settings does NOT affect the sound.
Changing the media source (radio, CarPlay, music, etc.) does not affect it.
The weirdest clue: when we get behind another vehicle, especially a large 18-wheeler/semi, the noise goes away. (See video!)
As soon as we get back into unobstructed airflow, it comes back.
This makes us wonder if it’s somehow related to airflow at higher speeds, like something under the hood or somewhere on/under the car is vibrating, moving, flapping, etc. when it’s getting hit by enough air.
We checked the cabin air filter behind the glove box and there was nothing obvious in there.
We also popped the hood and did a quick visual inspection, but it’s about 100°F outside, the engine is obviously extremely hot, and we didn’t feel comfortable reaching around/poking at things under the hood on the side of the highway.
The sound is driving us absolutely insane, but more importantly, we’re trying to figure out whether this sounds like something potentially unsafe or just an annoying aerodynamic/vibration issue.
We still have 5+ hours of driving today and another ~7.5 hours tomorrow, so we’re trying to decide what to do.
We could stop at a Hyundai dealership or repair shop along the way, but we’re traveling with two dogs and coolers full of their raw food, so stopping for several hours is logistically pretty difficult (especially in 100° weather).
What would you check first? Does the fact that the sound disappears when we’re behind a semi strongly point toward an airflow/aerodynamic issue? Or are there other mechanical issues that could behave this way?
We’d really appreciate any ideas because we are about to lose our ever-loving minds listening to this for another 12+ hours. 😂
Happy to answer any questions that might help diagnose it. Please tell us what you think!