Toyota Prius ZVW41 Series Dismantling Manual page 23

(4) Disconnect the cable from the auxiliary
battery negative (-) terminal.
(5) Disconnect the cable from the auxiliary
battery positive (+) terminal.
(6) Remove the 12volt auxiliary battery.
4. REMOVE SERVICE PLUG GRIP
Caution:
Wear insulated gloves for the following 3
steps.
(1) Raise the release handle of the service plug
grip as shown in the illustration below.
(2) Remove the service plug grip.
(3) Apply insulating tape to the socket of the
service plug grip to insulate it.
5. REMOVE 9 BOLTS AND INVERTER
TERMINAL COVER
HV battery
19
Service Plug Grip