5
When trouble arises
597
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47787U_(U)
■
Starting the hybrid system when the 12-volt battery is discharged
The hybrid system cannot be started by push-starting.
■ To prevent 12-volt battery discharge
● Turn off the headlights and the audio system while the hybrid system is
off.
● Turn off any unnecessary electrical components when the vehicle is run-
ning at a low speed for an extended period, such as in heavy traffic.
■ When the 12-volt battery is removed or discharged
● The hybrid system may not start. ( P. 473)
● If the 12-volt battery is depleted with the shift position in P, it will not be
possible to shift the shift position other than P. In this case, the vehicle
cannot be towed without lifting both front wheels because the front
wheels are locked by the parking lock. ( P. 525)
● When the 12-volt battery is reconnected, start the hybrid system, depress
the brake pedal, and confirm that it is possible to shift into each shift posi-
tion.
■ Charging the 12-volt battery
The electricity stored in the 12-volt battery will discharge gradually even
when the vehicle is not in use, due to natural discharge and the draining
effects of certain electrical appliances. If the vehicle is left for a long time, the
12-volt battery may discharge, and the hybrid system may be unable to start.
(The 12-volt battery charges automatically while the hybrid system is operat-
ing.)
618 6-1. Specifications
PRIUS PHV_OM_OM47787U_(U)
Electrical system
*1: Voltage is checked 30 seconds after the hybrid system and all lights areturned off.
Transmission
*2: The fluid capacity is the quantity of reference.If replacement is necessary, contact your Toyota dealer.
12-volt battery
Open voltage
*1 at
68 F (20 C):
Fully charged12.5 V or over
Half charged 11.0 12.5 V
Discharged Under 11.0 V
Charging rates 5 A max.
Fluid capacity*23.6 qt. (3.4 L, 3.0 Imp.qt.)
Fluid type Toyota Genuine ATF WS
NOTICE
■Transmission fluid type
Using transmission fluid other than “Toyota Genuine ATF WS” may cause
deterioration in shift quality, locking up of your transmission accompanied by
vibration, and ultimately damage the transmission of your vehicle.
