Toyota's biggest SUV gains a handful of new features for 2012.

Toyota's evergreen full-size SUV will add a new stability control-based trailer sway control system and a vehicle-detecting blind spot monitor for the 2012 model year.

Toyota says that Sequoia's new trailer sway control system has been plucked from its full-size Tundra pickup. Working with stability control, it is designed to counteract any forces a trailer might put on the vehicle to improve handling in all conditions. Trailer sway control will be standard across the Sequoia line for 2012.

The Sequoia's new blind spot monitoring system will be available only on the range-topping Platinum trim level.

The Sequoia will continue mostly unchanged otherwise for 2012. A 4.6-liter V8 powers lower-trim Sequoias, while the automaker's 381-horsepower 5.7-liter V8 is optionally available. Sequoia, like rivals from Ford and General Motors, rides on a rugged body-on-frame platform that helps give it up to a 7,400 lbs. trailer towing capacity.