rear defroster/ steering

[Yaris Hilton]

Originally Posted by 127.0.0.1

power steering is 100% off when on the highway. wander has nothing
to do with power steering

True. The Yaris' electric power steering is speed controlled. It only works when the car is stopped or moving slowly.

There are lots of threads discussing Yaris highway wander. Alignment settings, particularly toe and caster, should be checked if it's excessive. A relatively tall, short, light car like this will always be twitchier than a 1972 Cadillac Sedan Deville.