Why is there condensation in the
headlamps?
Headlamps have vents to
accommodate normal changes in air
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 when the temperature is cold.
When normal condensation occurs, a
fine mist can form on the interior of the
lens. The fine mist eventually clears
and exits through the vents during
normal operation.
How much condensation is
acceptable?
The presence of a fine mist, for
example no streaks, drip marks or
large droplets. A fine mist covers less
than 50% of the lens.