I think you will find that is the side light bulb rather than the DRL. The DRL bulb is a the large normal type bulb (same as the brake light bulb) in the centre of the inner light on a car with bi-xenon headlights. The outer lights are the bi-xenons which provide both main and dip beams.
See before I thought that DRLs are the same as normal lights that non-xenons have but think I noticed today, that it seems to be something in the inner corner inside the actual inner headlight.
First time I saw anything like that, it's very small!