Disposal Of Accumulator
WARNING: This page is about a different car, the 2003 Toyota Prius and 2002 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Never cut at a stretch.
Place accumulator in a vise, cover it with a cloth over a saw, then cut the accumulator body slowly. See Fig 1. When the outer body of the accumulator is cut, gas will discharge.