The manual says to do the following:
3. Remove option switch.
(What is the Option Switch?)
4. Unscrew screws (61) and carefully pull wooden cover panel on
underside out of center console.
(I removed two screws at the bottom of the wooden cover panel, however
the wooden cover panel still remains attached to a plastic frame. When
I pull at the bottom of the cover panel, the cover panel and control
unit do not come out freely and are still attached to each other. What
else do I need to do to remove the control unit without damage?)