99 Sienna:Transmission Dipstick and Timing Belt change?

Just bought this last week. Liking it so far, but just curious about the
Transmission Dipstick. I didn't see one in the engine compartment, nor any mention of it in the Owner's Manual. Also, There was a sticker in the Engine Compartment about the Timing Belt being changed and the mileage when it was changed. How many miles should one put on a Timing Belt.

Thanks.

That's kind of weird that you don't have the tranny stick. Do you see the hole it should go in?

For the timing belt, I believe it's 90K miles.

The Owners Manual doesn't show where the transmission dipstick should be.
It does say the usual things about avoiding overfilling, etc.

OK, I'm an Idiot....and have been taking some cold medicine.
The Transmission Dipstick is on the FRONT of the Engine....
I was looking in the BACK, where all the other cars have them.