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  Lighting - Exterior Lamp Fogging Information  


November 27, 2013


This bulletin has been amended. The Applied Vehicles section has been revised. Please discard all previous versions.

APPLIED VEHICLES: 2001-2014Nissan, All Models


Occasionally customers may notice water vapor or fog in the exterior lamps. This is generally NOT due to a defect.

The following information, illustrations, and flow chart are provided to help you in determining if an incident for water/condensation in the lamps is normal or not.

All current exterior lamp assemblies are vented to the atmosphere (not sealed).

^ This is necessary to allow for expansion and contraction of air from temperature "variations" (warmer or colder) without damage to the lamp.

^ Moisture in the air sometimes "travels" into and out of the lamp assembly through these vents.

^ Certain environmental conditions may cause moisture to condense.

^ The fogging/cloudiness should disappear over time when the lamp is in a dry environment.


Fog may temporarily form inside the lens of the exterior lamp assemblies based on environmental conditions or sudden temperature changes (such as in a car wash, or parked on a cold, sunny day). This is normal. See Figure 1.


If the moisture trickles, drips, or pools, it may not be considered normal and the lamp assembly may have a water leak path. See Figure 2 for an example.

If large drops of water collect inside the lens, refer to the flow chart to find the next step.