Does a Hyundai Windshield Have a Humidity Sensor?
Reviewed by the Skyview Auto Glass technical team — NWRD-, ASE- and DINITROL-trained technicians · Updated November 2026
Quick answer
Many do. A humidity sensor is bonded to the inside of the glass on a 2013 and 2019 Santa Fe, a 2016 Tucson, a 2020 Elantra and Palisade, a 2022 Ioniq Hybrid and a 2023 Elantra. It reads moisture and temperature at the glass face so the climate system clears the screen before it fogs.
What the humidity sensor does
The humidity sensor is bonded to the inside of the windshield, where it reads moisture and temperature right at the glass face. That lets the climate system clear the screen before it fogs rather than after, because the system can tell the glass is about to mist over and act on it. It is part of the glass, which means it transfers to the new windshield or comes with the new part rather than being a separate component.
Because the sensor reads through the laminate, replacement glass that is not optically identical to the original can shift its reading. The laminate thickness, tint and any coatings all affect what the sensor sees, so on some vehicles the climate system is exercised and confirmed after the glass goes in rather than assumed. The sensor itself is not calibrated, but its behaviour through the new glass is checked.
The sensor is invisible from outside the vehicle, and several Hyundai owners never know their windshield carries one until it is replaced. Glass without the bonding point, or glass that shifts the reading far enough, leaves the auto-defog working off a baseline that no longer matches the screen, which is why the humidity sensor is part of the part number rather than an afterthought.
Signs the humidity sensor was not carried across
- The screen fogs before the climate system reacts
- The sensor may be missing or reading through the wrong glass. The auto-defog is working blind, so it clears the screen after it mists rather than before.
- A quote that never mentioned the sensor
- The shop is working from the model name alone rather than the VIN. Seven recorded Hyundais carry the sensor, and only the VIN confirms whether yours is one of them.
Recorded Hyundais with a humidity sensor
- 2013 Santa Fe and 2019 Santa Fe.
- 2016 Tucson.
- 2020 Elantra and 2020 Palisade.
- 2022 Ioniq Hybrid and 2023 Elantra.
- Each carries the sensor bonded to the inside of the glass, identified from the VIN.
Questions about the Hyundai windshield humidity sensor
Does every Hyundai windshield have a humidity sensor?
No, but more do than owners realize. In our records a 2013 and 2019 Santa Fe, 2016 Tucson, 2020 Elantra, 2020 Palisade, 2022 Ioniq Hybrid and 2023 Elantra all carry one. Whether your specific Hyundai has it comes off the part number from the VIN. See our Hyundai windshield page.
Does the humidity sensor need calibration after a replacement?
The sensor itself is not calibrated, but because it reads through the laminate, replacement glass that is not optically identical can shift its reading. On some vehicles the climate system is exercised and confirmed after the glass goes in. The sensor is part of the glass, so it transfers across or comes with the new part.
What does a Hyundai windshield replacement cost?
A windshield replacement runs $200 to $500+ out of pocket before tax, set by the part your Hyundai was built with. Several of these Hyundais carry a camera, and where one is present the calibration is bundled into the same quote as the glass.
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