I did a search for this but everyone else's ticking noise is different than mine.
It doesn't matter if the engine is hot or cold, it ticks. It only ticks when I am in drive though. If it put it in reverse it doesn't tick. As I go faster, ticks faster. If I go slower it ticks slower. The tick goes away at about 25 mpg because the tick is so fast at that speed I can't hear it probably. I can't detect exactly where it is ticking, but it sounds like it is under the drivers seat or a little infront or behind it.