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Moisture in headlight

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Old Dec 20, 2022 | 10:34 AM
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skeelo's Avatar
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Default Moisture in headlight

Photos below from last night and this morning.

2022 F150 Lariat with dynamic headlights. ~10.5k miles and first winter season with the truck. Temps stepped down here in MN these past few days and I noticed some fogging inside the headlights last night. Checked again after getting home from the gym this morning and it looks like it's snowing inside the headlights now. Anyone else having this issue? First two photos are last night, second two photos are this morning. @Ford Motor Co. any ideas?





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Old Dec 20, 2022 | 10:39 AM
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Mine fog a bit (like your pics) every time I wash the truck -- have resolved in a few hours after. The housings are vented, so it is a function of humidity and temperature.
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Old Dec 20, 2022 | 10:41 AM
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Hello,

I have a 2022 XLT with the Black Appearance package and was concerned with the same issue. I asked the dealership and they said that those headlights have "breathe holes" and that its supposed to be like that.
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Old Dec 20, 2022 | 11:57 AM
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Originally Posted by whizkidder
Mine fog a bit (like your pics) every time I wash the truck -- have resolved in a few hours after. The housings are vented, so it is a function of humidity and temperature.
Makes sense I guess. Had vented headlights in an older Audi that ended up getting dirty on the inside of the lens over time and impacted light output. Hoping that's not the case here.
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Old Dec 21, 2022 | 04:30 AM
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That is not normal,they should not have moisture in them. No way, I have a 21 platinum and they never do that.This will cause problems in time. Those are not cheap to replace.
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Old Dec 21, 2022 | 07:38 AM
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Originally Posted by wperry
That is not normal,they should not have moisture in them. No way, I have a 21 platinum and they never do that.This will cause problems in time. Those are not cheap to replace.
It is normal, as these are not the "sealed beam" headlights of old. These have small vent holes, so they "breathe" with changes in air pressure. If it is a humid day (or you pressure-washed), the humid air will get into the housing. If there is a dramatic drop in temperature, that humidity can develop into condensation moisture inside the fixture, or if it is really cold, even make frost lines on the inside. All normal and expected. Once it warms a bit, the moisture will once again evaporate and escape through the vent holes. Now if you have an inch of standing water in the bottom of the fixture, that is an issue that needs to be taken to the dealership.
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Old Dec 21, 2022 | 06:35 PM
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Lightbulb condensation is normal, within limits

FYI, clipped verbatim from the Workshop Manual:
.
417-01 Exterior Lighting
2022 F-150
D
escription and Operation Procedure
revision date: 04/29/2022

Headlamp Assembly

Exterior lamps are vented to accommodate normal changes in pressure. Condensation can be a natural by-product of this design. When moist air enters the lamp assembly through the vents, there is a possibility that condensation can occur if the temperature is cold. When normal condensation occurs, a thin mist forms on the interior of the lens. The thin mist eventually clears and exits through the vents during normal operation. The amount of time it takes to clear the lens of acceptable mist varies with ambient humidity and lamp types. Normal condensation clears from any lamp in 48 hours under dry conditions.

Do not replace a lamp assembly with acceptable levels of condensation such as:
  • l presence of thin mist (no streaks, drip marks or droplets are present)
  • l fine mist covers less than 50% of the lens
Examples of unacceptable moisture (usually caused by a lamp housing leak):
  • l water puddling inside the lamp
  • l large water droplets, drip marks or streaks present on the interior of the lens

Last edited by fiver; Dec 21, 2022 at 06:38 PM.
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Old Dec 27, 2023 | 04:37 PM
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Originally Posted by malfo023
Hello,

I have a 2022 XLT with the Black Appearance package and was concerned with the same issue. I asked the dealership and they said that those headlights have "breathe holes" and that its supposed to be like that.
does it happen to your fog lights also ????
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Old Dec 27, 2023 | 09:58 PM
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My Lariat built in August 2023 get the moisture in the Head Lamps
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