The Headlight Dipped Beam Relay is part of the car electrics system. We have 3 associated problem symptoms connected to it.
The headlights won't switch on to dipped beam when selecting it on the stalk. The headlights stay on the same setting and can't be changed.
The dipped beam function doesn't always work when selecting it on the stalk, sometimes it takes a few attempts to get the lights to dip from the main beam.
The headlights don't seem to be as bright as they were, they don't light up as much of the road ahead as they used to.