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 lens
- Blown bulb (though the bulb itself could be the problem)
How to Test if This Part is the Problem
- Check the bulb: Replace the fog light bulb with a new one to rule out a simple bulb failure.
- Inspect the wiring: Look for any damaged or corroded wires connected to the fog light.
- Test the fog light relay: The relay could be faulty. Swap it with a known good relay (like the horn relay) to see if the fog light works.
- Check the fog light switch: Use a multimeter to test if the switch is sending power to the fog light.
- Inspect the fog light assembly: Check for physical damage or corrosion that could be preventing the light from working.
Common Failure Causes for This Part
- Bulb burnout
- Water damage or corrosion
- Impact damage from road debris
- Wiring issues
- Faulty fog light switch or relay