Sienna running lights - -

Sneaking up on someone?

The parking brake switch often shuts DRLs off. If that's true on a Sienna, tape the switch down. You'll also light the parking brake warning light on the dash, but the brake won't be on.

If you're checking the fuse box, remember that sometimes _inserting_ a missing fuse can disable certain features. For example, Jeep lets you disable open door indications when the doors are off by inserting a fuse, Subaru allows an automatic tranny equipped AWD car to be forced to FWD mode by adding a fuse.

Have fun.

I forgot to mention that if all else fails, you can access all of the tech documents here, for $10 a day:

I asked this question some time ago and this is the response I got.