RES/ACC Switch
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.
Resetting To A Faster Speed
Push the lever up in the "RES/ACC" direction and hold it. See Figure. Release the lever when the desired speed is attained. While the lever is held up, the vehicle will gradually gain speed.
However, a faster way to reset is to accelerate the vehicle then push the lever down in the "SET/COAST" direction.
Resuming The Preset Speed
If the preset speed is cancelled by pulling the control lever or by depressing the brake pedal, pushing the lever up in the "RES/ACC," see Figure, direction will restore the speed set prior to cancellation.
However, once the vehicle speed falls below about 25 mph (40 km/h), the preset speed will not be resumed.