Driving along the other day and weather turner to fog so put my fog lights on and came up with rh fog light fail. So went and bought a new bulb replaced it and tested and still not working.
Any advice please.
Dirty bulbholder? Dodgy connection to the cluster (assuming rear fog light)?
Sorry should have said it’s the front one.
Just had this issue last week.
It has been intermittently reporting Left front bulb failure for a couple of years.
Changed the bulb once, in the rain/fog and no good.
Replaced bulb again last week, as I found the filament in the last new one was very intermittent.
Went upstream to the 2 wire plug, took it apart, cleaned it, and put it back. Worked, but a bit dodgy.
Got a small screwdriver and tightened up the internal clips in the plug (bent them in a bit to tighten)
Problem solved.
Thankyou will give that a try.