I thought the alarm only sounds when you leave the sunroof tilted (since the shade panel could be closed and you would never know).
For your poll purposes, this is the way my '94 works. And it only sounds for about 5 seconds, than is silent. I always thought that it wasn't necessary to have an alarm for the open sunroof, I mean, there's no alarm if you leave a window open. Kinda obvious, although aim's got a good point about the shade panel hiding what should be obvious. On mine, the sunroof's position limits how far you can close the shade. In other words, you can only fully close the shade if the sunroof is fully closed.
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