Hybrid system

Ok I have a 2011 Prius. The abs, brake and traction lights came on few weeks ago. It made the car drive differently and brakes had to be pumped. After that it has been normal. Took it to several parts stores and only one could get a reading which said pretty much that the abs fluid is leaking. Well of course it’s not. So I checked ALL fuses... then disconnected the 12v to reset those lights. Well... now the dang thing is showing ALL dash lights and that hybrid system needs to be check. How do you remove all of that?