I found my code under the fuse box in the engine bay. Have you checked to see if it's in there. Or check around the glove compartment.

My friend had it in the glove compartment. It might be because someone printed it, got it laminated and stuck it there, but it sure looks like factory.

Any ways, check to see if you see 5 digits. It should be 5 digits and you have to enter it twice.

For example; mine is 61615. I entered 6, 1, 6, 1, 5, 6, 1, 6, 1, 5 and then the clock showed up.

edit: there, that should be more accurate. I wrote it off of my head only. I double checked it.