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headlights not working

Behind the Wheel, Car Culture

Headlights FAQ: “What’s Wrong with My Car’s Lights?”

February 28, 2019
Headlights-FAQ
Having problems with your car’s headlights? Millions of car owners around the world are right there with you, shoddy headlamps and all. But if you’ve got questions related to your vehicle headlights, I’ve got answers—and solutions—that should put those problems in your rearview.

Why are my headlights so dim?

You’re in some automotive Twilight Zone episode, sitting between “headlights quit working” and “headlights are too bright” dimensions. Fortunately, getting out of this paranormal predicament is fairly simple. Although bad headlight switches and alternators can cause issues with hazy headlamps, dim headlights are usually caused by either old-bulb filaments or corroded ground wires.

  • To diagnose your headlight ailment, open your headlamp assembly and inspect the bulb. Notice any gray, brown, or black residue inside? If so, purchase new lights from your dealer or at a headlight store, and replace those suckers.
  • If your headlight bulbs look clear, check under the hood. Follow your headlight’s wires back to where they connect to the vehicle. With a wrench, unscrew the ground cable from its point of connection. Use a wire brush to scrub away any corrosion or dirt. Reconnect the cables and inspect your light’s brightness.
  • If neither solution solves your problem, consider taking a trip to your auto service center. They’ll help.

Why are headlights so bright?

If you feel like car headlights are getting brighter each year, you’re not crazy. With LED, halogen, HID, and xenon technology becoming a new norm, high-intensity headlights on the road today can cause temporary blindness, or “road dazzle,” putting other drivers at risk. Continue Reading…