Dealer web sites using Trademotion for the back-end part catalog are down and have been for days. It looks like Trademotion has a major problem or they are exiting the business. It isn't just Toyota dealers. Other dealers who use Trademotion are having problems.
Here's a couple I use; they both seem fine: Toyota USA's own site I think: Toyota Parts Center Online | Genuine Toyota Parts & Accessories McGeorge Toyota: Toyota Parts | Toyota Online Parts | Genuine Toyota Parts | Toyota Parts Online