What are the reasons for a car's low beam headlights not working?

[LandonAnn]

The reasons for a car's low beam headlights not working are: dead battery, damaged bulb, or blown fuse. Here are the relevant explanations: 1. Dead battery: You can test this by pressing the horn to check the battery's remaining power. If the battery was drained overnight due to leaving electrical devices on, the car may not start the next morning, and the low beams won't turn on either. 2. Damaged bulb: Most bulbs have a limited lifespan. When nearing the end of their service life, the light intensity becomes inadequate, and they may overheat until the filament burns out. 3. Blown fuse: The fuse for the low beam headlights can usually be found in the engine compartment fuse box or the fuse box on the left side of the instrument panel.