Nissan Altima headlights insufficiently bright despite multiple replacements on Nissan Altima

Some Nissan Altima owners report experiencing dim or insufficiently bright headlights despite multiple bulb replacements. This issue may stem from burnt-out bulbs, which have a limited lifespan and can fail over time. Additionally, some owners find that the headlight assemblies themselves may need replacement if the lights are on but fail to adequately illuminate the road, although this can be a labor-intensive process. In certain cases, dim headlights can be linked to night blindness, which is not caused by the light's brightness but rather the design of the headlights; cleaning the headlights with alcohol may help in such instances. Furthermore, some owners notice that the reflective material within the light assembly can deteriorate due to heat from the bulbs, leading to reduced brightness. Addressing these factors may be crucial for those still experiencing headlight dimness.