Not specifically kombi but it did happen on My land belt ladies Amarok so VW at least. We have some Narva spotlights mounted on the bullbar which get a good work out On our regular trips to the farm and both failed at aboutthe same time - we turned them on one day and nothing. As both had gone figured it must have been perhaps the connector in switching line from the high beam or the fuse or something wireing related as what's the chance of both globes blowing at the same time. After checking the obvious the globes were the only thing left and sure enough they had power but failed to function though the filament looked ok. Never mind buy some new globes and all was good again. This morning I thought I better give my car a clean out and came accross one of the old globes that hadnt made it to the bin and thought I'd have a closer look as the filament REALY looked ok. As you can see the filament looks ok but the base of the globe looks a bit dodgey so out with microscope for a closer look You can just make out the burnt bit of wireing within the glass on the connection closest to the bottom of the image.