Warning Signs the Fog Light is Failing
- Dim or flickering light
- Fog light not turning on at all
- Cracked or damaged lens
- Moisture inside the fog light housing
How to Test if This Part is the Problem
- Check the bulb: Make sure the fog light bulb isn't burned out. Replace it with a new bulb to see if that fixes the problem.
- Check the fuse: Look in your car's fuse box for the fog light fuse. If it's blown, replace it with a new fuse of the same amperage.
- Check the wiring: Inspect the wiring and connectors leading to the fog light for any damage or corrosion.
- Use a multimeter: If the bulb and fuse are good, use a multimeter to check for voltage at the fog light connector when the fog lights are turned on. No voltage indicates a problem with the switch, wiring, or relay.
Common Failure Causes for This Part
- Impact damage from rocks or debris
- Water or moisture entering the housing
- Bulb burnout
- Electrical shorts or wiring problems
- Corrosion of connectors