In article <06ZQg.30790$bf5.1436@edtnps90>,
"Steve Mackie" <smackie@eastlink.ca> wrote:

> When I first got my car every time I put the defrost on, the A/C would come
> on with it. It no longer does that, or at least I don't think it does.
>
> Is the A/C light supposed to come on when I put it in defrost or is the A/C
> is some sort of stealth mode? I thought the light did come on, but it's been
> months since I last used the defrost.

I believe it's in stealth mode. It comes on, but the light doesn't.

AC is necessary for defrosting, down to a certain temperature. Below a
certain temperature, it won't come on even if you hit the button.