Three problems related to headlights have been reported for the 2003 Infiniti G35. The most recently reported issues are listed below.
Condensation in exterior headlights. Headlights not sealed properly.
Condensation inside headlights.
From the second year after purchase of auto, the headlight outer plastic cover has become whitish and opaque, limiting the light output of headlight and reducing road illumination, thus providing limited road illumination al night.