Gotcha, yeah, mine is the maintenance one. I did a search for a full service manual and I can't find one either. Chilton doesn't have one, and neither does Helm Inc.
I did find this thread which may help you out.
http://www.toyota-4runner.org/5th-gen-t4rs/181727-2015-shop-manual-availability.html
There is another option - ALLDATAdiy.com offers yearly/5 year subscriptions on a vehicle specific basis that contain the OEM factory service instructions for much cheaper than Toyota TIS. I'm not sure how good it is, but its a LOT cheaper, and might be good enough for home mechanics. It goes up to 2015 models so far (waiting for my 2016 4runner to show up on the list).
I found mine here, just put in your own year, model, etc... 2017 Toyota 4Runner Owners Manual and Warranty - Toyota Owners
I love my factory repair manuals.
Does anyone know if you can print the manual from TIS?
I like physical copies and killing trees (not really) but would rather get paper greasy than my laptop when working on things.
Basically get a temporary subscription, get a box of paper and work that printer. Not very practical but...