faifai613 wrote: ↑Sat Jun 19, 2021 6:22 pmMy 2012 Nissan Quest just started having the issue on the passenger side headlight assembly recently as the weather gets warm. I noticed it seems to happen when the engine bay is hot from driving. The condensation would be gone once the car sits overnight. Have you figured out a remedy for the problem? Thanks.
Nissan headlights are all vented, so moisture can usually be "baked" out by running the high beams continuously for several hours. There are lots of places for accumulated moisture to hide in the bottom of the housing, and behavior like @faifai613 is seeing usually means there's a puddle someplace in the bottom of the lamp. Usually that much moisture also means a leak somewhere, either a bulb seal, lens seal, or cracked housing.dbailey wrote: ↑Sun Jun 20, 2021 3:59 amI took the bulbs out, used a hair dryer to thoroughly evaporate all the condensation, and then reseated all the bulbs. The problem never came back (despite all our storms and humidity in Georgia) so it’s possible I never really had the bulbs and covers/boots really firmly seated. Those rubber boots are tricky.
Thanks for all the input. I visually inspected the housing and I couldn't find any visible crack or defect. It had never happened before so it was quite strange that it happened all of a sudden. I did caulk the top of the housing where the clear plastic and the back housing meet but I guess either that wasn't the source of the leak or like you said there's a puddle somewhere at the bottom of the housing. I guess I will try to dry out the housing and see if the problem goes away.VStar650CL wrote: ↑Sun Jun 20, 2021 4:50 amfaifai613 wrote: ↑Sat Jun 19, 2021 6:22 pmMy 2012 Nissan Quest just started having the issue on the passenger side headlight assembly recently as the weather gets warm. I noticed it seems to happen when the engine bay is hot from driving. The condensation would be gone once the car sits overnight. Have you figured out a remedy for the problem? Thanks.Nissan headlights are all vented, so moisture can usually be "baked" out by running the high beams continuously for several hours. There are lots of places for accumulated moisture to hide in the bottom of the housing, and behavior like @faifai613 is seeing usually means there's a puddle someplace in the bottom of the lamp. Usually that much moisture also means a leak somewhere, either a bulb seal, lens seal, or cracked housing.dbailey wrote: ↑Sun Jun 20, 2021 3:59 amI took the bulbs out, used a hair dryer to thoroughly evaporate all the condensation, and then reseated all the bulbs. The problem never came back (despite all our storms and humidity in Georgia) so it’s possible I never really had the bulbs and covers/boots really firmly seated. Those rubber boots are tricky.
You're most welcome. The best way to find an unobvious crack or leak is to spray the whole outside of the assembly with soapy water, then gently blow air into the housing through a bulb hole and look for bubbles.faifai613 wrote: ↑Sun Jun 20, 2021 1:52 pmThanks for all the input. I visually inspected the housing and I couldn't find any visible crack or defect. It had never happened before so it was quite strange that it happened all of a sudden. I did caulk the top of the housing where the clear plastic and the back housing meet but I guess either that wasn't the source of the leak or like you said there's a puddle somewhere at the bottom of the housing. I guess I will try to dry out the housing and see if the problem goes away.