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When driving
2-2. Instrument cluster
Gauges and meters
The units used on the trip information display etc. may differ
depending on the target region.
The following gauges and meters and display illuminate when the
“POWER” switch is in ON mode:
Hybrid System Indicator
Hybrid System Indicator represents the hybrid system power output
and regenerative charging.
Speedometer
Displays the vehicle speed.
Shift position indicators
Displays the shift position.
Fuel gauge
Displays the quantity of fuel remaining in the tank.
Hybrid battery (traction battery) status
The amount of charge remaining in the hybrid battery (traction battery)
is shown by 8 bars.
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204 2-2. Instrument cluster
PRIUS v_U (OM47784U)
As shown below, the driving conditions of the vehicle can be con-
firmed by checking the status of the indicator.
*1: The images are examples only, and may vary slightly from actual condi- tions.
*2: The displayed status is intended as a guide, and may differ from theactual status.
*3: The gasoline engine will automatically stop and restart under variousconditions.
Hybrid System Indicator statusDisplay*1
Charge area:
Shows regenerative charging.
*2 ( P. 31)
Eco area:
Shows that the vehicle is driven in Eco-friendly.
Hybrid Eco area:
Shows that gasoline engine power is not being
used very often.
*3
Power area:
Shows that the driving power is more than the
upper limit of Eco driving (during full power driv-
ing etc.).
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4-3. Do-it-yourself maintenance
PRIUS v_U (OM47784U)
4
Maintenance and care
■
Before recharging
When recharging, the 12-volt battery produces hydrogen gas which is flam-
mable and explosive. Therefore, observe the following precautions before
recharging:
● If recharging with the 12-volt battery installed on the vehicle, be sure to
disconnect the ground cable.
● Make sure the power switch on the charger is off when connecting and
disconnecting the charger cables to the 12-volt battery.
■ Exterior
Make sure that the 12-volt battery terminals are not corroded
and that there are no loose c onnections, cracks, or loose
clamps.
Terminals
Hold-down clamp
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386 4-3. Do-it-yourself maintenance
PRIUS v_U (OM47784U)
■After recharging/reconnecting the 12-volt battery
● Unlocking the doors using the smart key system may not be possible
immediately after reconnecting the 12-volt battery. If this happens, use
the wireless remote control or the mechanical key to lock/unlock the
doors.
● Start the hybrid system with the “POWER” switch in ACCESSORY mode.
The hybrid system may not start with the “POWER” switch turned off.
However, the hybrid system will operate normally from the second
attempt.
● The “POWER” switch mode is recorded by the vehicle. If the 12-volt bat-
tery is reconnected, the vehicle will return the “POWER” switch mode to
the status it was in before the 12-volt battery was disconnected. Make
sure to turn off the power before disconnect the 12-volt battery. Take
extra care when connecting the 12-volt battery if the “POWER” switch
mode prior to discharge is unknown.
● Restart the hybrid system, depress the brake pedal, and confirm that it is
possible to shift into each shift position.
If the system will not start even after multiple attempts at all methods above,
contact your Toyota dealer.
CAUTION
■ Chemicals in the 12-volt battery
The 12-volt battery contains poisonous and corrosive sulfuric acid and may
produce hydrogen gas which is flammable and explosive. To reduce the risk
of death or serious injury, take the following precautions while working on or
near the 12-volt battery:
● Do not cause sparks by touching the 12-volt battery terminals with tools.
● Do not smoke or light a match near the 12-volt battery.
● Avoid contact with eyes, skin and clothes.
● Never inhale or swallow electrolyte.
● Wear protective safety glasses when working near the 12-volt battery.
● Keep children away from the 12-volt battery.
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388 4-3. Do-it-yourself maintenance
PRIUS v_U (OM47784U)
CAUTION
■When disconnecting the 12-volt battery
NOTICE
■When recharging the 12-volt battery
Never recharge the 12-volt battery while the hybrid system is operating.
Also, be sure all accessories are turned off.
Do not disconnect the negative (-) termi-
nal on the body side as shown. The dis-
connected negative (-) terminal may
touch the positive (+) terminal, which may
cause a short and result in death or seri-
ous injury.
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When trouble arises
445
5-2. Steps to take in an emergency
PRIUS v_U (OM47784U)
Stop the vehicle immediately.
The following warning indicates the possibility of damage to the vehi-
cle that may lead to an accident. Immediately stop the vehicle in a
safe place and contact your Toyota dealer.
Warning lightWarning light/Details
Charging system warning light Indicates a malfunction in the vehicle’s charging system
Low engine oil pressure warning light Indicates that the engine oil pressure is too low
High coolant temper ature warning light
Indicates that the coolant temperature is too high
Changes from a flashing to a solid light when the engine
coolant temperature increases.
Hybrid system warning light (warning buzzer) Indicates a malfunction in the hybrid system
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When trouble arises
449
5-2. Steps to take in an emergency
PRIUS v_U (OM47784U)
Follow the correction procedures.
After taking the specified steps to correct the suspected problem,
check that the warning light goes off.
Warning lightWarning light/DetailsCorrection procedure
(Flashes) P position request indicator
light (warning buzzer)
The amount of charge remain-
ing in the hybrid battery (trac-
tion battery) has fallen because
the shift position has been left
in N for a long time Because recharging
is not possible when
the shift position is in
N, shift the shift posi-
tion to P when park-
ing the vehicle for a
long time.
The driver’s door has been
opened while the shift position
is in N, D or B Shift the shift posi-
tion to P.
An attempt has been made to
start the hybrid system while
the shift position is in anything
other than P
Hybrid system overheat warn-
ing light (warning buzzer)
The hybrid system has over-
heated
This light may come on when
driving under severe operating
conditions. (For example, when
driving up a long steep hill.) Stop and check.
(
P. 487)
(Only outer
frame flashes) Low hybrid battery (traction
battery) warning light (warning
buzzer)
Hybrid battery (traction battery)
level becomes low because the
shift position is in N for long
time Because recharging
is not possible when
the shift position is in
N, shift the shift posi-
tion to P when park-
ing the vehicle for a
long time.
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484 5-2. Steps to take in an emergency
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■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. 386)
● 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. 437)
● 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 recharges automatically while the hybrid system is oper-
ating.)