2012 TOYOTA PRIUS PHV light

588
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47818U_(U)
If the hybrid system will not start
Reasons for the hybrid system not starting vary depending on the
situation. Check the following a nd perform the appropriate proce-
dure:
■ The hybrid system will not start even though the correct
starting procedure is being followed ( P. 238)
One of the following may be the cause of the problem:
● The charging cable may be attached to the vehicle. ( P. 91)
● The electronic key may not be functioning properly.
*
(  P. 591)
● There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
● There may be a malfunction in the immobilizer system.
*
(  P. 179)
● There may be a malfunction in the P position control system.
*
( P. 243, 548)
*: It may not be possible to shift the shift position from P to another
position.
■ The interior lights and headlight s are dim, or the horn does
not sound or sounds at a low volume
One of the following may be the cause of the problem:
● The 12-volt battery may be discharged. ( P. 594)
● The 12-volt battery terminal c onnections may be loose or cor-
roded.

5
When trouble arises
589
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47818U_(U)
Emergency start function
When the hybrid system does not start, the following steps can be
used as an interim measure to st art the hybrid system if the
“POWER” switch is functioning normally:
Set the parking brake.
Turn the “POWER” switch to ACCESSORY mode.
Press and hold the “POWER” switch for about 15 seconds
while depressing the brake pedal firmly.
Even if the hybrid system can be started using the above steps, the
system may be malfunctioning. Have the vehicle inspected by your
Toyota dealer.
■ The interior lights and headlights do not turn on, or the horn
does not sound
One of the following may be the cause of the problem:
●One or both of the 12-volt ba ttery terminals may be discon-
nected.
● The 12-volt battery may be discharged. ( P. 594)
Contact your Toyota dealer if the problem cannot be repaired, or if
repair procedures are unknown.
STEP 1
STEP 2
STEP 3

596 5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47818U_(U)
Start the engine of the second vehicle. Increase the engine
speed slightly and maintain at that level for approximately
5 minutes to charge the battery of your vehicle.
Maintain the engine speed of the second vehicle and start
the hybrid system of your ve hicle by turning the “POWER”
switch to ON mode.
Make sure the “READY” indicator comes on. If the indicator
light does not come on, contact your Toyota dealer.
Once the hybrid system has started, remove the jumper
cables in the exact reverse or der from which they were con-
nected.
Close the exclusive jump starting terminal cover, and rein-
stall the fuse box cover to its original position.
When installing, first hook the fuse box cover onto the two rear
tabs.
Once the hybrid system starts , have the vehicle inspected at
your Toyota dealer as soon as possible.
STEP 4
STEP 5
STEP 6
STEP7
STEP8

5
When trouble arises
597
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47818U_(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.)

598 5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47818U_(U)
CAUTION
■Avoiding 12-volt battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flam-
mable gas that may be emitted from the 12-volt battery:
● Make sure each jumper cable is connected to the correct terminal and that
it is not unintentionally in contact with any other than the intended terminal.
● Do not allow the other end of the jumper cable connected to the “+” termi-
nal to come into contact with any other parts or metal surfaces in the area,
such as brackets or unpainted metal.
● Do not allow the + and - clamps of the jumper cables to come into contact
with each other.
● Do not smoke, use matches, cigarette lighters or allow open flame near
the 12-volt battery.
■ 12-volt battery precautions
The 12-volt battery contains poisonous and corrosive acidic electrolyte,
while related parts contain lead and lead compounds. Observe the following
precautions when handling the 12-volt battery:
● When working with the 12-volt battery, always wear safety glasses and
take care not to allow any battery fluids (acid) to come into contact with
skin, clothing or the vehicle body.
● Do not lean over the 12-volt battery.
● In the event that battery fluid comes into contact with the skin or eyes,
immediately wash the affected area with water and seek medical attention.
Place a wet sponge or cloth over the affected area until medical attention
can be received.
● Always wash your hands after handling the battery support, terminals, and
other battery-related parts.
● Do not allow children near the 12-volt battery.

600
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47818U_(U)
If your vehicle overheats
Correction procedures■ If the high coolant temperatur e warning light comes on or
flashes
Stop the vehicle in a safe place and turn off the air condition-
ing system, and then stop the hybrid system.
If you see steam: Carefully lift the hood after the steam subsides.
If you do not see steam: Carefully lift the hood.
After the hybrid system has
cooled down sufficiently, inspect
the hoses and radiator core
(radiator) for any leaks.
Radiator
Cooling fans
If a large amount of coolant leaks,
immediately contact your Toyota
dealer.
The following may indicate that your vehicle is overheating.
●The high coolant temperature warning light ( P. 534) comes on
or flashes, or a loss of hybrid system power is experienced. (For
example, the vehicle s peed does not increase.)
● “HYBRID SYSTEM OVERHEAT” ( P. 552) is shown on the
multi-informat ion display.
● Steam comes out from under the hood.
1 ÉTAPE
2 ÉTAPE
STEP 3

618 6-1. Specifications
PRIUS PHV_OM_OM47818U_(U)
Electrical system
Transmission
*: The fluid capacity is the quantity of reference.If replacement is necessary, contact your Toyota dealer.
12-volt battery
Open voltage
at 68  F (20 C): 12.6  12.8 V Fully charged
12.2  12.4 V Half charged
11 . 5
 11.9 V Discharged
(Voltage is checked 20 minutes after the hybrid
system and all lights are turned off.)
Charging rates 5 A max.
Fluid capacity*3.6 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.

620 6-1. Specifications
PRIUS PHV_OM_OM47818U_(U)
Light bulbs
A: H11 halogen bulbs
B: HB3 halogen bulbs
C: H16 halogen bulbs
D: Wedge base bulbs (amber)
E: Wedge base bulbs (clear)
F: Double end bulbs

*
: If equipped
Light BulbsBulb No.WTy p e
Exterior Halogen headlights
Low beam
High beam
LED headlights High beam H11
9005
9005 55
60
60A
B
B
Fog lights
*H16 19 C
Front turn signal lights WY21W 21 D
Front side marker lights W5W 5 E
Parking lights
(halogen headlights) W5W 5 E
Rear turn signal lights WY21W 21 D
Back-up lights W21W 21 E
License plate lights W5W 5 E
InteriorFront interior/personal lights
5E
Rear interior light 8F
Vanity lights 8E
Door courtesy lights 5E
Luggage compartment light 5F