Moisture / water in tail lights (LED) 2020 CX-5

BWJ

:
CX-60 Takumi
What do you guys think about this water, in a 8 month old car? LED light.

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Did you get any heavy rain recently? Does it happen the first time since you have the CX-5 new?

Usually there’s a vent for the taillight assembly. In any event, your taillight assembly has small leak somewhere. It should be covered under new car warranty.
 
Yes a week ago it was raining quite heavily and this is the first time they are misting. I mean having heard that the LED lights front and rear are sealed closed units, unlike other types of lights, therefore they need to be replaced if a light source goes on.

Thx, for reply :)
 
I believe I've seen this on my 2019 and the moisture goes away. Keep in mind that sealed lighting assemblies will still have a vent to equalize pressure between the inside and outside of the part, so it likely pulled in some moist air and caused some condensation. Here's Mazda's statement from TSB 09-003-19-3555:
Some customers may complain of condensation/fog inside the front (headlamp/headlight) or rear (taillamp/taillight) combination lights. The recent new models have been fitted with a clear lens which can cause the symptom to be more noticeable, however, it does not affect the performance of the light. This condensation/fog is a natural phenomenon that occurs when there is a fairly large temperature difference between the inside and the outside of the light housing. It is normal for very small water drops to appear in certain locations on the light units where the air is stagnant (condensation), making the lens look whitish (fog). This happens mostly in the corners and narrow spaces, and will typically clear during warmer ambient temperatures, or when the lights have been on for some time.
 
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