[mstraka]

The dead left lamp was very simple, just a vaporized bulb. I didn’t know that both high and low beams used the same filament so that when the bulb burns out both high and low beams go out. I thought it was a fuse issue since both intensities were affected. The bulb was a high output halogen Sylvania Sulverstar Ultra. Great improvement over the stock bulbs in light output but this one had a very short life. About 15 hrs. Sylvania notes that because of its high output that the life is 1/4 the normal 65 watt and estimates its life to approximately 120 hrs. But 15 hrs.? I still find it odd that there is no fuse listed for the Evoque’s headlights in the owner’s manual.

 

[mstraka]

The pair of bulbs, where the one burnt out, both have deposits along the inner side of the glass bulb. Each glass has two pools of this dark deposited stuff about 180 degrees opposite each deposit and also a third deposit at the tip of the bulb glass. Could this have been molten solder and contributed to the failure?