Condensation in Headlight Lens - '16

[lawdog1]

Anyone noticed condensation on the Laramie bifocal lights when they are on at night? Mine gets some condensation around the length of the orange LED lights inside the lens. Both sides but more on driver side. When I turn the lights off it goes away (so does the heat and light that makes I suppose.) I plan on watching it for a few days to see if it is constant, increases with rain or after washing the truck. Would not think it should do that?.

 

[sag2]

Condensation in the lamps has been around for many years. There was a TSB a while back that pretty much said if you turn on the lights for x minutes and it evaporates it is normal. There is moisture in the air and it has to condense somewhere when it cools.

 

[lawdog1]

Thank you for the response.

 

[sag2]

They updated the TSB again in 2014. It does not list specific model years so it applies to all.

SUBJECT:
Exterior Lamp Condensation And Fogging
OVERVIEW:
This bulletin involves evaluating lamp condensation and fogging condition.
DISCUSSION:
Some customers may report that on occasion, vehicle exterior lamp assemblies are fogged
with a light layer of condensation on the inside of the lenses. This may be reported after
the lamps have been turned on and brought up to operating temperature, turned off, and
then rapidly cooled by cold water (such as rain, or the water from a car wash). Lens
fogging can also occur under certain atmospheric conditions after a vehicle has been
parked outside overnight (i.e., a warm humid day followed by clear cool night). This will
usually clear as atmospheric conditions change to allow the condensation to change back
into a vapor. Turning the lamps on will usually accelerate this process.
A lamp that exhibits condensation/fogging should be evaluated in a service bay
environment by first drying all water from the outside surface of the lens and operating the
lamp for 20 minutes.
If the condensation/fogging has begun to clear from the lamp lens after 20 minutes with the
lamps operating, this indicates the lamp sealing has not been breached, and the lamp
does not need to be replaced