ON/OFF Button
WARNING: This page is about a different car, the 2002 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
Turning On The System
To operate the cruise control, push the "CRUISE ON-OFF " switch. See Figure. This turns the system on. The indicator light in the instrument panel shows that you can now set the vehicle at a desired cruising speed. See Figure. Another press will turn the system completely off.