Initially, from brand new, the dash glow plug light never came on although the glow plugs were being activated. You could hear the relay making and after 30 seconds or so could hear it break. Also, being in the Great White North, there's no way it would have started that first winter as we had several weeks of -20 to -30C weather. I wasn't even sure where on the dash the light was because the manual and its photos are terrible. When I got around to asking my dealer about it, he told me there was a recall on the safety module under the seat. As the dealer is 3 hours away, I had them ship it and replaced it myself. That fixed the problem of the glow plug dash light not illuminating. In those cold temps I'll cycle the glow plugs twice. Even in hot weather, like 25-30C, on cold start up the glow plug light comes on. But after running it until it's up to temp, then shutting it down for several hours, the glow plugs will not activate as I guess the block retains enough heat for a long time.